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/**************************************************************************/
/* gdscript_analyzer.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
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# include "gdscript_analyzer.h"
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# include "gdscript.h"
# include "gdscript_utility_functions.h"
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# include "core/config/engine.h"
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# include "core/config/project_settings.h"
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# include "core/core_constants.h"
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# include "core/core_string_names.h"
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# include "core/io/file_access.h"
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# include "core/io/resource_loader.h"
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# include "core/object/class_db.h"
# include "core/object/script_language.h"
# include "core/templates/hash_map.h"
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# include "scene/resources/packed_scene.h"
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# if defined(TOOLS_ENABLED) && !defined(DISABLE_DEPRECATED)
# define SUGGEST_GODOT4_RENAMES
# include "editor/renames_map_3_to_4.h"
# endif
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# define UNNAMED_ENUM "<anonymous enum>"
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# define ENUM_SEPARATOR "."
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static MethodInfo info_from_utility_func ( const StringName & p_function ) {
ERR_FAIL_COND_V ( ! Variant : : has_utility_function ( p_function ) , MethodInfo ( ) ) ;
MethodInfo info ( p_function ) ;
if ( Variant : : has_utility_function_return_value ( p_function ) ) {
info . return_val . type = Variant : : get_utility_function_return_type ( p_function ) ;
if ( info . return_val . type = = Variant : : NIL ) {
info . return_val . usage | = PROPERTY_USAGE_NIL_IS_VARIANT ;
}
}
if ( Variant : : is_utility_function_vararg ( p_function ) ) {
info . flags | = METHOD_FLAG_VARARG ;
} else {
for ( int i = 0 ; i < Variant : : get_utility_function_argument_count ( p_function ) ; i + + ) {
PropertyInfo pi ;
# ifdef DEBUG_METHODS_ENABLED
pi . name = Variant : : get_utility_function_argument_name ( p_function , i ) ;
# else
pi . name = " arg " + itos ( i + 1 ) ;
# endif
pi . type = Variant : : get_utility_function_argument_type ( p_function , i ) ;
info . arguments . push_back ( pi ) ;
}
}
return info ;
}
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static GDScriptParser : : DataType make_callable_type ( const MethodInfo & p_info ) {
GDScriptParser : : DataType type ;
type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
type . kind = GDScriptParser : : DataType : : BUILTIN ;
type . builtin_type = Variant : : CALLABLE ;
type . is_constant = true ;
type . method_info = p_info ;
return type ;
}
static GDScriptParser : : DataType make_signal_type ( const MethodInfo & p_info ) {
GDScriptParser : : DataType type ;
type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
type . kind = GDScriptParser : : DataType : : BUILTIN ;
type . builtin_type = Variant : : SIGNAL ;
type . is_constant = true ;
type . method_info = p_info ;
return type ;
}
static GDScriptParser : : DataType make_native_meta_type ( const StringName & p_class_name ) {
GDScriptParser : : DataType type ;
type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
type . kind = GDScriptParser : : DataType : : NATIVE ;
type . builtin_type = Variant : : OBJECT ;
type . native_type = p_class_name ;
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type . is_constant = true ;
type . is_meta_type = true ;
return type ;
}
static GDScriptParser : : DataType make_script_meta_type ( const Ref < Script > & p_script ) {
GDScriptParser : : DataType type ;
type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
type . kind = GDScriptParser : : DataType : : SCRIPT ;
type . builtin_type = Variant : : OBJECT ;
type . native_type = p_script - > get_instance_base_type ( ) ;
type . script_type = p_script ;
type . script_path = p_script - > get_path ( ) ;
type . is_constant = true ;
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type . is_meta_type = true ;
return type ;
}
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// In enum types, native_type is used to store the class (native or otherwise) that the enum belongs to.
// This disambiguates between similarly named enums in base classes or outer classes
static GDScriptParser : : DataType make_enum_type ( const StringName & p_enum_name , const String & p_base_name , const bool p_meta = false ) {
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GDScriptParser : : DataType type ;
type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
type . kind = GDScriptParser : : DataType : : ENUM ;
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type . builtin_type = p_meta ? Variant : : DICTIONARY : Variant : : INT ;
type . enum_type = p_enum_name ;
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type . is_constant = true ;
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type . is_meta_type = p_meta ;
// For enums, native_type is only used to check compatibility in is_type_compatible()
// We can set anything readable here for error messages, as long as it uniquely identifies the type of the enum
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if ( p_base_name . is_empty ( ) ) {
type . native_type = p_enum_name ;
} else {
type . native_type = p_base_name + ENUM_SEPARATOR + p_enum_name ;
}
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return type ;
}
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static GDScriptParser : : DataType make_native_enum_type ( const StringName & p_enum_name , const StringName & p_native_class , bool p_meta = true ) {
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// Find out which base class declared the enum, so the name is always the same even when coming from other contexts.
StringName native_base = p_native_class ;
while ( true & & native_base ! = StringName ( ) ) {
if ( ClassDB : : has_enum ( native_base , p_enum_name , true ) ) {
break ;
}
native_base = ClassDB : : get_parent_class_nocheck ( native_base ) ;
}
GDScriptParser : : DataType type = make_enum_type ( p_enum_name , native_base , p_meta ) ;
if ( p_meta ) {
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type . builtin_type = Variant : : NIL ; // Native enum types are not Dictionaries.
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}
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List < StringName > enum_values ;
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ClassDB : : get_enum_constants ( native_base , p_enum_name , & enum_values , true ) ;
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for ( const StringName & E : enum_values ) {
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type . enum_values [ E ] = ClassDB : : get_integer_constant ( native_base , E ) ;
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}
return type ;
}
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static GDScriptParser : : DataType make_global_enum_type ( const StringName & p_enum_name , const StringName & p_base , bool p_meta = true ) {
GDScriptParser : : DataType type = make_enum_type ( p_enum_name , p_base , p_meta ) ;
if ( p_meta ) {
type . builtin_type = Variant : : NIL ; // Native enum types are not Dictionaries.
type . is_pseudo_type = true ;
}
HashMap < StringName , int64_t > enum_values ;
CoreConstants : : get_enum_values ( type . native_type , & enum_values ) ;
for ( const KeyValue < StringName , int64_t > & element : enum_values ) {
type . enum_values [ element . key ] = element . value ;
}
return type ;
}
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static GDScriptParser : : DataType make_builtin_meta_type ( Variant : : Type p_type ) {
GDScriptParser : : DataType type ;
type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
type . kind = GDScriptParser : : DataType : : BUILTIN ;
type . builtin_type = p_type ;
type . is_constant = true ;
type . is_meta_type = true ;
return type ;
}
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bool GDScriptAnalyzer : : has_member_name_conflict_in_script_class ( const StringName & p_member_name , const GDScriptParser : : ClassNode * p_class , const GDScriptParser : : Node * p_member ) {
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if ( p_class - > members_indices . has ( p_member_name ) ) {
int index = p_class - > members_indices [ p_member_name ] ;
const GDScriptParser : : ClassNode : : Member * member = & p_class - > members [ index ] ;
if ( member - > type = = GDScriptParser : : ClassNode : : Member : : VARIABLE | |
member - > type = = GDScriptParser : : ClassNode : : Member : : CONSTANT | |
member - > type = = GDScriptParser : : ClassNode : : Member : : ENUM | |
member - > type = = GDScriptParser : : ClassNode : : Member : : ENUM_VALUE | |
member - > type = = GDScriptParser : : ClassNode : : Member : : CLASS | |
member - > type = = GDScriptParser : : ClassNode : : Member : : SIGNAL ) {
return true ;
}
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if ( p_member - > type ! = GDScriptParser : : Node : : FUNCTION & & member - > type = = GDScriptParser : : ClassNode : : Member : : FUNCTION ) {
return true ;
}
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}
return false ;
}
bool GDScriptAnalyzer : : has_member_name_conflict_in_native_type ( const StringName & p_member_name , const StringName & p_native_type_string ) {
if ( ClassDB : : has_signal ( p_native_type_string , p_member_name ) ) {
return true ;
}
if ( ClassDB : : has_property ( p_native_type_string , p_member_name ) ) {
return true ;
}
if ( ClassDB : : has_integer_constant ( p_native_type_string , p_member_name ) ) {
return true ;
}
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if ( p_member_name = = CoreStringNames : : get_singleton ( ) - > _script ) {
return true ;
}
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return false ;
}
Error GDScriptAnalyzer : : check_native_member_name_conflict ( const StringName & p_member_name , const GDScriptParser : : Node * p_member_node , const StringName & p_native_type_string ) {
if ( has_member_name_conflict_in_native_type ( p_member_name , p_native_type_string ) ) {
push_error ( vformat ( R " (Member " % s " redefined (original in native class '%s')) " , p_member_name , p_native_type_string ) , p_member_node ) ;
return ERR_PARSE_ERROR ;
}
if ( class_exists ( p_member_name ) ) {
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push_error ( vformat ( R " (The member " % s " shadows a native class.) " , p_member_name ) , p_member_node ) ;
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return ERR_PARSE_ERROR ;
}
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if ( GDScriptParser : : get_builtin_type ( p_member_name ) ! = Variant : : VARIANT_MAX ) {
push_error ( vformat ( R " (The member " % s " cannot have the same name as a builtin type.) " , p_member_name ) , p_member_node ) ;
return ERR_PARSE_ERROR ;
}
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return OK ;
}
Error GDScriptAnalyzer : : check_class_member_name_conflict ( const GDScriptParser : : ClassNode * p_class_node , const StringName & p_member_name , const GDScriptParser : : Node * p_member_node ) {
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// TODO check outer classes for static members only
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const GDScriptParser : : DataType * current_data_type = & p_class_node - > base_type ;
while ( current_data_type & & current_data_type - > kind = = GDScriptParser : : DataType : : Kind : : CLASS ) {
GDScriptParser : : ClassNode * current_class_node = current_data_type - > class_type ;
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if ( has_member_name_conflict_in_script_class ( p_member_name , current_class_node , p_member_node ) ) {
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String parent_class_name = current_class_node - > fqcn ;
if ( current_class_node - > identifier ! = nullptr ) {
parent_class_name = current_class_node - > identifier - > name ;
}
push_error ( vformat ( R " (The member " % s " already exists in parent class %s.) " , p_member_name , parent_class_name ) , p_member_node ) ;
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return ERR_PARSE_ERROR ;
}
current_data_type = & current_class_node - > base_type ;
}
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// No need for native class recursion because Node exposes all Object's properties.
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if ( current_data_type & & current_data_type - > kind = = GDScriptParser : : DataType : : Kind : : NATIVE ) {
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if ( current_data_type - > native_type ! = StringName ( ) ) {
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return check_native_member_name_conflict (
p_member_name ,
p_member_node ,
current_data_type - > native_type ) ;
}
}
return OK ;
}
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void GDScriptAnalyzer : : get_class_node_current_scope_classes ( GDScriptParser : : ClassNode * p_node , List < GDScriptParser : : ClassNode * > * p_list ) {
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ERR_FAIL_NULL ( p_node ) ;
ERR_FAIL_NULL ( p_list ) ;
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if ( p_list - > find ( p_node ) ! = nullptr ) {
return ;
}
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p_list - > push_back ( p_node ) ;
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// TODO: Try to solve class inheritance if not yet resolving.
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// Prioritize node base type over its outer class
if ( p_node - > base_type . class_type ! = nullptr ) {
get_class_node_current_scope_classes ( p_node - > base_type . class_type , p_list ) ;
}
if ( p_node - > outer ! = nullptr ) {
get_class_node_current_scope_classes ( p_node - > outer , p_list ) ;
}
}
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Error GDScriptAnalyzer : : resolve_class_inheritance ( GDScriptParser : : ClassNode * p_class , const GDScriptParser : : Node * p_source ) {
if ( p_source = = nullptr & & parser - > has_class ( p_class ) ) {
p_source = p_class ;
}
if ( p_class - > base_type . is_resolving ( ) ) {
push_error ( vformat ( R " (Could not resolve class " % s " : Cyclic reference.) " , type_from_metatype ( p_class - > get_datatype ( ) ) . to_string ( ) ) , p_source ) ;
return ERR_PARSE_ERROR ;
}
if ( ! p_class - > base_type . has_no_type ( ) ) {
// Already resolved.
return OK ;
}
if ( ! parser - > has_class ( p_class ) ) {
String script_path = p_class - > get_datatype ( ) . script_path ;
Ref < GDScriptParserRef > parser_ref = get_parser_for ( script_path ) ;
if ( parser_ref . is_null ( ) ) {
push_error ( vformat ( R " (Could not find script " % s " .) " , script_path ) , p_source ) ;
return ERR_PARSE_ERROR ;
}
Error err = parser_ref - > raise_status ( GDScriptParserRef : : PARSED ) ;
if ( err ) {
push_error ( vformat ( R " (Could not parse script " % s " : %s.) " , script_path , error_names [ err ] ) , p_source ) ;
return ERR_PARSE_ERROR ;
}
ERR_FAIL_COND_V_MSG ( ! parser_ref - > get_parser ( ) - > has_class ( p_class ) , ERR_PARSE_ERROR , R " (Parser bug: Mismatched external parser.) " ) ;
GDScriptAnalyzer * other_analyzer = parser_ref - > get_analyzer ( ) ;
GDScriptParser * other_parser = parser_ref - > get_parser ( ) ;
int error_count = other_parser - > errors . size ( ) ;
other_analyzer - > resolve_class_inheritance ( p_class ) ;
if ( other_parser - > errors . size ( ) > error_count ) {
push_error ( vformat ( R " (Could not resolve inheritance for class " % s " .) " , p_class - > fqcn ) , p_source ) ;
return ERR_PARSE_ERROR ;
}
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return OK ;
}
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GDScriptParser : : ClassNode * previous_class = parser - > current_class ;
parser - > current_class = p_class ;
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if ( p_class - > identifier ) {
StringName class_name = p_class - > identifier - > name ;
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if ( GDScriptParser : : get_builtin_type ( class_name ) < Variant : : VARIANT_MAX ) {
push_error ( vformat ( R " (Class " % s " hides a built-in type.) " , class_name ) , p_class - > identifier ) ;
} else if ( class_exists ( class_name ) ) {
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push_error ( vformat ( R " (Class " % s " hides a native class.) " , class_name ) , p_class - > identifier ) ;
} else if ( ScriptServer : : is_global_class ( class_name ) & & ( ScriptServer : : get_global_class_path ( class_name ) ! = parser - > script_path | | p_class ! = parser - > head ) ) {
push_error ( vformat ( R " (Class " % s " hides a global script class.) " , class_name ) , p_class - > identifier ) ;
} else if ( ProjectSettings : : get_singleton ( ) - > has_autoload ( class_name ) & & ProjectSettings : : get_singleton ( ) - > get_autoload ( class_name ) . is_singleton ) {
push_error ( vformat ( R " (Class " % s " hides an autoload singleton.) " , class_name ) , p_class - > identifier ) ;
}
}
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GDScriptParser : : DataType resolving_datatype ;
resolving_datatype . kind = GDScriptParser : : DataType : : RESOLVING ;
p_class - > base_type = resolving_datatype ;
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// Set datatype for class.
GDScriptParser : : DataType class_type ;
class_type . is_constant = true ;
class_type . is_meta_type = true ;
class_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
class_type . kind = GDScriptParser : : DataType : : CLASS ;
class_type . class_type = p_class ;
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class_type . script_path = parser - > script_path ;
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class_type . builtin_type = Variant : : OBJECT ;
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p_class - > set_datatype ( class_type ) ;
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GDScriptParser : : DataType result ;
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if ( ! p_class - > extends_used ) {
result . type_source = GDScriptParser : : DataType : : ANNOTATED_INFERRED ;
result . kind = GDScriptParser : : DataType : : NATIVE ;
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result . native_type = SNAME ( " RefCounted " ) ;
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} else {
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
GDScriptParser : : DataType base ;
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int extends_index = 0 ;
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if ( ! p_class - > extends_path . is_empty ( ) ) {
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if ( p_class - > extends_path . is_relative_path ( ) ) {
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p_class - > extends_path = class_type . script_path . get_base_dir ( ) . path_join ( p_class - > extends_path ) . simplify_path ( ) ;
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}
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Ref < GDScriptParserRef > ext_parser = get_parser_for ( p_class - > extends_path ) ;
if ( ext_parser . is_null ( ) ) {
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push_error ( vformat ( R " (Could not resolve super class path " % s " .) " , p_class - > extends_path ) , p_class ) ;
return ERR_PARSE_ERROR ;
}
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Error err = ext_parser - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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if ( err ! = OK ) {
push_error ( vformat ( R " (Could not resolve super class inheritance from " % s " .) " , p_class - > extends_path ) , p_class ) ;
return err ;
}
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base = ext_parser - > get_parser ( ) - > head - > get_datatype ( ) ;
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} else {
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if ( p_class - > extends . is_empty ( ) ) {
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push_error ( " Could not resolve an empty super class path. " , p_class ) ;
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return ERR_PARSE_ERROR ;
}
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GDScriptParser : : IdentifierNode * id = p_class - > extends [ extends_index + + ] ;
const StringName & name = id - > name ;
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base . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
if ( ScriptServer : : is_global_class ( name ) ) {
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String base_path = ScriptServer : : get_global_class_path ( name ) ;
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if ( base_path = = parser - > script_path ) {
base = parser - > head - > get_datatype ( ) ;
} else {
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Ref < GDScriptParserRef > base_parser = get_parser_for ( base_path ) ;
if ( base_parser . is_null ( ) ) {
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push_error ( vformat ( R " (Could not resolve super class " % s " .) " , name ) , id ) ;
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return ERR_PARSE_ERROR ;
}
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Error err = base_parser - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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if ( err ! = OK ) {
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push_error ( vformat ( R " (Could not resolve super class inheritance from " % s " .) " , name ) , id ) ;
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return err ;
}
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base = base_parser - > get_parser ( ) - > head - > get_datatype ( ) ;
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}
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} else if ( ProjectSettings : : get_singleton ( ) - > has_autoload ( name ) & & ProjectSettings : : get_singleton ( ) - > get_autoload ( name ) . is_singleton ) {
const ProjectSettings : : AutoloadInfo & info = ProjectSettings : : get_singleton ( ) - > get_autoload ( name ) ;
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if ( info . path . get_extension ( ) . to_lower ( ) ! = GDScriptLanguage : : get_singleton ( ) - > get_extension ( ) ) {
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push_error ( vformat ( R " (Singleton %s is not a GDScript.) " , info . name ) , id ) ;
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return ERR_PARSE_ERROR ;
}
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Ref < GDScriptParserRef > info_parser = get_parser_for ( info . path ) ;
if ( info_parser . is_null ( ) ) {
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push_error ( vformat ( R " (Could not parse singleton from " % s " .) " , info . path ) , id ) ;
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return ERR_PARSE_ERROR ;
}
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Error err = info_parser - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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if ( err ! = OK ) {
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push_error ( vformat ( R " (Could not resolve super class inheritance from " % s " .) " , name ) , id ) ;
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return err ;
}
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base = info_parser - > get_parser ( ) - > head - > get_datatype ( ) ;
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} else if ( class_exists ( name ) ) {
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base . kind = GDScriptParser : : DataType : : NATIVE ;
base . native_type = name ;
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} else {
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// Look for other classes in script.
bool found = false ;
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List < GDScriptParser : : ClassNode * > script_classes ;
get_class_node_current_scope_classes ( p_class , & script_classes ) ;
for ( GDScriptParser : : ClassNode * look_class : script_classes ) {
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if ( look_class - > identifier & & look_class - > identifier - > name = = name ) {
if ( ! look_class - > get_datatype ( ) . is_set ( ) ) {
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Error err = resolve_class_inheritance ( look_class , id ) ;
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if ( err ) {
return err ;
}
}
base = look_class - > get_datatype ( ) ;
found = true ;
break ;
}
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if ( look_class - > has_member ( name ) ) {
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resolve_class_member ( look_class , name , id ) ;
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GDScriptParser : : ClassNode : : Member member = look_class - > get_member ( name ) ;
GDScriptParser : : DataType member_datatype = member . get_datatype ( ) ;
switch ( member . type ) {
case GDScriptParser : : ClassNode : : Member : : CLASS :
break ; // OK.
case GDScriptParser : : ClassNode : : Member : : CONSTANT :
if ( member_datatype . kind ! = GDScriptParser : : DataType : : SCRIPT & & member_datatype . kind ! = GDScriptParser : : DataType : : CLASS ) {
push_error ( vformat ( R " (Constant " % s " is not a preloaded script or class.) " , name ) , id ) ;
return ERR_PARSE_ERROR ;
}
break ;
default :
push_error ( vformat ( R " (Cannot use %s " % s " in extends chain.) " , member . get_type_name ( ) , name ) , id ) ;
return ERR_PARSE_ERROR ;
}
base = member_datatype ;
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found = true ;
break ;
}
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}
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if ( ! found ) {
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push_error ( vformat ( R " (Could not find base class " % s " .) " , name ) , id ) ;
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return ERR_PARSE_ERROR ;
}
}
}
for ( int index = extends_index ; index < p_class - > extends . size ( ) ; index + + ) {
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GDScriptParser : : IdentifierNode * id = p_class - > extends [ index ] ;
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if ( base . kind ! = GDScriptParser : : DataType : : CLASS ) {
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push_error ( vformat ( R " (Cannot get nested types for extension from non-GDScript type " % s " .) " , base . to_string ( ) ) , id ) ;
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return ERR_PARSE_ERROR ;
}
reduce_identifier_from_base ( id , & base ) ;
GDScriptParser : : DataType id_type = id - > get_datatype ( ) ;
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if ( ! id_type . is_set ( ) ) {
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push_error ( vformat ( R " (Could not find nested type " % s " .) " , id - > name ) , id ) ;
return ERR_PARSE_ERROR ;
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} else if ( id_type . kind ! = GDScriptParser : : DataType : : SCRIPT & & id_type . kind ! = GDScriptParser : : DataType : : CLASS ) {
push_error ( vformat ( R " (Identifier " % s " is not a preloaded script or class.) " , id - > name ) , id ) ;
return ERR_PARSE_ERROR ;
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}
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base = id_type ;
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}
result = base ;
}
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if ( ! result . is_set ( ) | | result . has_no_type ( ) ) {
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// TODO: More specific error messages.
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push_error ( vformat ( R " (Could not resolve inheritance for class " % s " .) " , p_class - > identifier = = nullptr ? " <main> " : p_class - > identifier - > name ) , p_class ) ;
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return ERR_PARSE_ERROR ;
}
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// Check for cyclic inheritance.
const GDScriptParser : : ClassNode * base_class = result . class_type ;
while ( base_class ) {
if ( base_class - > fqcn = = p_class - > fqcn ) {
push_error ( " Cyclic inheritance. " , p_class ) ;
return ERR_PARSE_ERROR ;
}
base_class = base_class - > base_type . class_type ;
}
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p_class - > base_type = result ;
class_type . native_type = result . native_type ;
p_class - > set_datatype ( class_type ) ;
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parser - > current_class = previous_class ;
return OK ;
}
Error GDScriptAnalyzer : : resolve_class_inheritance ( GDScriptParser : : ClassNode * p_class , bool p_recursive ) {
Error err = resolve_class_inheritance ( p_class ) ;
if ( err ) {
return err ;
}
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if ( p_recursive ) {
for ( int i = 0 ; i < p_class - > members . size ( ) ; i + + ) {
if ( p_class - > members [ i ] . type = = GDScriptParser : : ClassNode : : Member : : CLASS ) {
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err = resolve_class_inheritance ( p_class - > members [ i ] . m_class , true ) ;
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if ( err ) {
return err ;
}
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}
}
}
return OK ;
}
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GDScriptParser : : DataType GDScriptAnalyzer : : resolve_datatype ( GDScriptParser : : TypeNode * p_type ) {
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GDScriptParser : : DataType bad_type ;
bad_type . kind = GDScriptParser : : DataType : : VARIANT ;
bad_type . type_source = GDScriptParser : : DataType : : INFERRED ;
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if ( p_type = = nullptr ) {
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return bad_type ;
}
if ( p_type - > get_datatype ( ) . is_resolving ( ) ) {
push_error ( R " (Could not resolve datatype: Cyclic reference.) " , p_type ) ;
return bad_type ;
}
if ( ! p_type - > get_datatype ( ) . has_no_type ( ) ) {
return p_type - > get_datatype ( ) ;
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}
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GDScriptParser : : DataType resolving_datatype ;
resolving_datatype . kind = GDScriptParser : : DataType : : RESOLVING ;
p_type - > set_datatype ( resolving_datatype ) ;
GDScriptParser : : DataType result ;
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
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if ( p_type - > type_chain . is_empty ( ) ) {
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// void.
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : NIL ;
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p_type - > set_datatype ( result ) ;
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return result ;
}
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const GDScriptParser : : IdentifierNode * first_id = p_type - > type_chain [ 0 ] ;
StringName first = first_id - > name ;
bool type_found = false ;
if ( first_id - > suite & & first_id - > suite - > has_local ( first ) ) {
const GDScriptParser : : SuiteNode : : Local & local = first_id - > suite - > get_local ( first ) ;
if ( local . type = = GDScriptParser : : SuiteNode : : Local : : CONSTANT ) {
result = local . get_datatype ( ) ;
if ( ! result . is_set ( ) ) {
// Don't try to resolve it as the constant can be declared below.
push_error ( vformat ( R " (Local constant " % s " is not resolved at this point.) " , first ) , first_id ) ;
return bad_type ;
}
if ( result . is_meta_type ) {
type_found = true ;
} else if ( Ref < Script > ( local . constant - > initializer - > reduced_value ) . is_valid ( ) ) {
Ref < GDScript > gdscript = local . constant - > initializer - > reduced_value ;
if ( gdscript . is_valid ( ) ) {
Ref < GDScriptParserRef > ref = get_parser_for ( gdscript - > get_script_path ( ) ) ;
if ( ref - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ! = OK ) {
push_error ( vformat ( R " (Could not parse script from " % s " .) " , gdscript - > get_script_path ( ) ) , first_id ) ;
return bad_type ;
}
result = ref - > get_parser ( ) - > head - > get_datatype ( ) ;
} else {
result = make_script_meta_type ( local . constant - > initializer - > reduced_value ) ;
}
type_found = true ;
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} else {
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push_error ( vformat ( R " (Local constant " % s " is not a valid type.) " , first ) , first_id ) ;
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return bad_type ;
}
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} else {
push_error ( vformat ( R " (Local %s " % s " cannot be used as a type.) " , local . get_name ( ) , first ) , first_id ) ;
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return bad_type ;
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}
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}
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if ( ! type_found ) {
if ( first = = SNAME ( " Variant " ) ) {
if ( p_type - > type_chain . size ( ) = = 2 ) {
// May be nested enum.
StringName enum_name = p_type - > type_chain [ 1 ] - > name ;
StringName qualified_name = String ( first ) + ENUM_SEPARATOR + String ( p_type - > type_chain [ 1 ] - > name ) ;
if ( CoreConstants : : is_global_enum ( qualified_name ) ) {
result = make_global_enum_type ( enum_name , first , true ) ;
return result ;
} else {
push_error ( vformat ( R " (Name " % s " is not a nested type of " Variant " .) " , enum_name ) , p_type - > type_chain [ 1 ] ) ;
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return bad_type ;
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}
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} else if ( p_type - > type_chain . size ( ) > 2 ) {
push_error ( R " (Variant only contains enum types, which do not have nested types.) " , p_type - > type_chain [ 2 ] ) ;
return bad_type ;
}
result . kind = GDScriptParser : : DataType : : VARIANT ;
} else if ( first = = SNAME ( " Object " ) ) {
// Object is treated like a native type, not a built-in.
result . kind = GDScriptParser : : DataType : : NATIVE ;
result . builtin_type = Variant : : OBJECT ;
result . native_type = SNAME ( " Object " ) ;
} else if ( GDScriptParser : : get_builtin_type ( first ) < Variant : : VARIANT_MAX ) {
// Built-in types.
if ( p_type - > type_chain . size ( ) > 1 ) {
push_error ( R " (Built-in types don't contain nested types.) " , p_type - > type_chain [ 1 ] ) ;
return bad_type ;
}
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = GDScriptParser : : get_builtin_type ( first ) ;
if ( result . builtin_type = = Variant : : ARRAY ) {
GDScriptParser : : DataType container_type = type_from_metatype ( resolve_datatype ( p_type - > container_type ) ) ;
if ( container_type . kind ! = GDScriptParser : : DataType : : VARIANT ) {
container_type . is_constant = false ;
result . set_container_element_type ( container_type ) ;
}
}
} else if ( class_exists ( first ) ) {
// Native engine classes.
result . kind = GDScriptParser : : DataType : : NATIVE ;
result . builtin_type = Variant : : OBJECT ;
result . native_type = first ;
} else if ( ScriptServer : : is_global_class ( first ) ) {
if ( parser - > script_path = = ScriptServer : : get_global_class_path ( first ) ) {
result = parser - > head - > get_datatype ( ) ;
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} else {
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String path = ScriptServer : : get_global_class_path ( first ) ;
String ext = path . get_extension ( ) ;
if ( ext = = GDScriptLanguage : : get_singleton ( ) - > get_extension ( ) ) {
Ref < GDScriptParserRef > ref = get_parser_for ( path ) ;
if ( ! ref . is_valid ( ) | | ref - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ! = OK ) {
push_error ( vformat ( R " (Could not parse global class " % s " from " % s " .) " , first , ScriptServer : : get_global_class_path ( first ) ) , p_type ) ;
return bad_type ;
}
result = ref - > get_parser ( ) - > head - > get_datatype ( ) ;
} else {
result = make_script_meta_type ( ResourceLoader : : load ( path , " Script " ) ) ;
}
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}
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} else if ( ProjectSettings : : get_singleton ( ) - > has_autoload ( first ) & & ProjectSettings : : get_singleton ( ) - > get_autoload ( first ) . is_singleton ) {
const ProjectSettings : : AutoloadInfo & autoload = ProjectSettings : : get_singleton ( ) - > get_autoload ( first ) ;
Ref < GDScriptParserRef > ref = get_parser_for ( autoload . path ) ;
if ( ref . is_null ( ) ) {
push_error ( vformat ( R " (The referenced autoload " % s " (from " % s " ) could not be loaded.) " , first , autoload . path ) , p_type ) ;
return bad_type ;
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}
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if ( ref - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ! = OK ) {
push_error ( vformat ( R " (Could not parse singleton " % s " from " % s " .) " , first , autoload . path ) , p_type ) ;
return bad_type ;
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}
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result = ref - > get_parser ( ) - > head - > get_datatype ( ) ;
} else if ( ClassDB : : has_enum ( parser - > current_class - > base_type . native_type , first ) ) {
// Native enum in current class.
result = make_native_enum_type ( first , parser - > current_class - > base_type . native_type ) ;
} else if ( CoreConstants : : is_global_enum ( first ) ) {
if ( p_type - > type_chain . size ( ) > 1 ) {
push_error ( R " (Enums cannot contain nested types.) " , p_type - > type_chain [ 1 ] ) ;
return bad_type ;
}
result = make_global_enum_type ( first , StringName ( ) ) ;
} else {
// Classes in current scope.
List < GDScriptParser : : ClassNode * > script_classes ;
bool found = false ;
get_class_node_current_scope_classes ( parser - > current_class , & script_classes ) ;
for ( GDScriptParser : : ClassNode * script_class : script_classes ) {
if ( found ) {
break ;
}
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if ( script_class - > identifier & & script_class - > identifier - > name = = first ) {
result = script_class - > get_datatype ( ) ;
break ;
}
if ( script_class - > members_indices . has ( first ) ) {
resolve_class_member ( script_class , first , p_type ) ;
GDScriptParser : : ClassNode : : Member member = script_class - > get_member ( first ) ;
switch ( member . type ) {
case GDScriptParser : : ClassNode : : Member : : CLASS :
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result = member . get_datatype ( ) ;
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found = true ;
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break ;
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case GDScriptParser : : ClassNode : : Member : : ENUM :
result = member . get_datatype ( ) ;
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found = true ;
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break ;
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case GDScriptParser : : ClassNode : : Member : : CONSTANT :
if ( member . get_datatype ( ) . is_meta_type ) {
result = member . get_datatype ( ) ;
found = true ;
break ;
} else if ( Ref < Script > ( member . constant - > initializer - > reduced_value ) . is_valid ( ) ) {
Ref < GDScript > gdscript = member . constant - > initializer - > reduced_value ;
if ( gdscript . is_valid ( ) ) {
Ref < GDScriptParserRef > ref = get_parser_for ( gdscript - > get_script_path ( ) ) ;
if ( ref - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ! = OK ) {
push_error ( vformat ( R " (Could not parse script from " % s " .) " , gdscript - > get_script_path ( ) ) , p_type ) ;
return bad_type ;
}
result = ref - > get_parser ( ) - > head - > get_datatype ( ) ;
} else {
result = make_script_meta_type ( member . constant - > initializer - > reduced_value ) ;
}
found = true ;
break ;
}
[[fallthrough]] ;
default :
push_error ( vformat ( R " ( " % s " is a %s but does not contain a type.) " , first , member . get_type_name ( ) ) , p_type ) ;
return bad_type ;
}
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}
}
}
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}
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if ( ! result . is_set ( ) ) {
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push_error ( vformat ( R " (Could not find type " % s " in the current scope.) " , first ) , p_type ) ;
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return bad_type ;
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}
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if ( p_type - > type_chain . size ( ) > 1 ) {
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if ( result . kind = = GDScriptParser : : DataType : : CLASS ) {
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for ( int i = 1 ; i < p_type - > type_chain . size ( ) ; i + + ) {
GDScriptParser : : DataType base = result ;
reduce_identifier_from_base ( p_type - > type_chain [ i ] , & base ) ;
result = p_type - > type_chain [ i ] - > get_datatype ( ) ;
if ( ! result . is_set ( ) ) {
push_error ( vformat ( R " (Could not find type " % s " under base " % s " .) " , p_type - > type_chain [ i ] - > name , base . to_string ( ) ) , p_type - > type_chain [ 1 ] ) ;
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return bad_type ;
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} else if ( ! result . is_meta_type ) {
push_error ( vformat ( R " (Member " % s " under base " % s " is not a valid type.) " , p_type - > type_chain [ i ] - > name , base . to_string ( ) ) , p_type - > type_chain [ 1 ] ) ;
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return bad_type ;
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}
}
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} else if ( result . kind = = GDScriptParser : : DataType : : NATIVE ) {
// Only enums allowed for native.
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if ( ClassDB : : has_enum ( result . native_type , p_type - > type_chain [ 1 ] - > name ) ) {
if ( p_type - > type_chain . size ( ) > 2 ) {
push_error ( R " (Enums cannot contain nested types.) " , p_type - > type_chain [ 2 ] ) ;
return bad_type ;
} else {
result = make_native_enum_type ( p_type - > type_chain [ 1 ] - > name , result . native_type ) ;
}
} else {
push_error ( vformat ( R " (Could not find type " % s " in " % s " .) " , p_type - > type_chain [ 1 ] - > name , first ) , p_type - > type_chain [ 1 ] ) ;
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return bad_type ;
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}
} else {
push_error ( vformat ( R " (Could not find nested type " % s " under base " % s " .) " , p_type - > type_chain [ 1 ] - > name , result . to_string ( ) ) , p_type - > type_chain [ 1 ] ) ;
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return bad_type ;
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}
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}
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if ( result . builtin_type ! = Variant : : ARRAY & & p_type - > container_type ! = nullptr ) {
push_error ( " Only arrays can specify the collection element type. " , p_type ) ;
}
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p_type - > set_datatype ( result ) ;
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return result ;
}
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void GDScriptAnalyzer : : resolve_class_member ( GDScriptParser : : ClassNode * p_class , StringName p_name , const GDScriptParser : : Node * p_source ) {
ERR_FAIL_COND ( ! p_class - > has_member ( p_name ) ) ;
resolve_class_member ( p_class , p_class - > members_indices [ p_name ] , p_source ) ;
}
void GDScriptAnalyzer : : resolve_class_member ( GDScriptParser : : ClassNode * p_class , int p_index , const GDScriptParser : : Node * p_source ) {
ERR_FAIL_INDEX ( p_index , p_class - > members . size ( ) ) ;
GDScriptParser : : ClassNode : : Member & member = p_class - > members . write [ p_index ] ;
if ( p_source = = nullptr & & parser - > has_class ( p_class ) ) {
p_source = member . get_source_node ( ) ;
}
if ( member . get_datatype ( ) . is_resolving ( ) ) {
push_error ( vformat ( R " (Could not resolve member " % s " : Cyclic reference.) " , member . get_name ( ) ) , p_source ) ;
return ;
}
if ( member . get_datatype ( ) . is_set ( ) ) {
return ;
}
if ( ! parser - > has_class ( p_class ) ) {
String script_path = p_class - > get_datatype ( ) . script_path ;
Ref < GDScriptParserRef > parser_ref = get_parser_for ( script_path ) ;
if ( parser_ref . is_null ( ) ) {
push_error ( vformat ( R " (Could not find script " % s " (While resolving " % s " ).) " , script_path , member . get_name ( ) ) , p_source ) ;
return ;
}
Error err = parser_ref - > raise_status ( GDScriptParserRef : : PARSED ) ;
if ( err ) {
push_error ( vformat ( R " (Could not resolve script " % s " : %s (While resolving " % s " ).) " , script_path , error_names [ err ] , member . get_name ( ) ) , p_source ) ;
return ;
}
ERR_FAIL_COND_MSG ( ! parser_ref - > get_parser ( ) - > has_class ( p_class ) , R " (Parser bug: Mismatched external parser.) " ) ;
GDScriptAnalyzer * other_analyzer = parser_ref - > get_analyzer ( ) ;
GDScriptParser * other_parser = parser_ref - > get_parser ( ) ;
int error_count = other_parser - > errors . size ( ) ;
other_analyzer - > resolve_class_member ( p_class , p_index ) ;
if ( other_parser - > errors . size ( ) > error_count ) {
push_error ( vformat ( R " (Could not resolve member " % s " .) " , member . get_name ( ) ) , p_source ) ;
}
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return ;
}
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// If it's already resolving, that's ok.
if ( ! p_class - > base_type . is_resolving ( ) ) {
Error err = resolve_class_inheritance ( p_class ) ;
if ( err ) {
return ;
}
}
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GDScriptParser : : ClassNode * previous_class = parser - > current_class ;
parser - > current_class = p_class ;
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GDScriptParser : : DataType resolving_datatype ;
resolving_datatype . kind = GDScriptParser : : DataType : : RESOLVING ;
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{
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# ifdef DEBUG_ENABLED
HashSet < GDScriptWarning : : Code > previously_ignored_warnings = parser - > ignored_warnings ;
GDScriptParser : : Node * member_node = member . get_source_node ( ) ;
if ( member_node & & member_node - > type ! = GDScriptParser : : Node : : ANNOTATION ) {
// Apply @warning_ignore annotations before resolving member.
for ( GDScriptParser : : AnnotationNode * & E : member_node - > annotations ) {
if ( E - > name = = SNAME ( " @warning_ignore " ) ) {
resolve_annotation ( E ) ;
E - > apply ( parser , member . variable ) ;
}
}
for ( GDScriptWarning : : Code ignored_warning : member_node - > ignored_warnings ) {
parser - > ignored_warnings . insert ( ignored_warning ) ;
}
}
# endif
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switch ( member . type ) {
case GDScriptParser : : ClassNode : : Member : : VARIABLE : {
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bool previous_static_context = static_context ;
static_context = member . variable - > is_static ;
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check_class_member_name_conflict ( p_class , member . variable - > identifier - > name , member . variable ) ;
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member . variable - > set_datatype ( resolving_datatype ) ;
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resolve_variable ( member . variable , false ) ;
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resolve_pending_lambda_bodies ( ) ;
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// Apply annotations.
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for ( GDScriptParser : : AnnotationNode * & E : member . variable - > annotations ) {
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if ( E - > name ! = SNAME ( " @warning_ignore " ) ) {
resolve_annotation ( E ) ;
E - > apply ( parser , member . variable ) ;
}
}
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static_context = previous_static_context ;
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# ifdef DEBUG_ENABLED
if ( member . variable - > exported & & member . variable - > onready ) {
parser - > push_warning ( member . variable , GDScriptWarning : : ONREADY_WITH_EXPORT ) ;
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}
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if ( member . variable - > initializer ) {
// Check if it is call to get_node() on self (using shorthand $ or not), so we can check if @onready is needed.
// This could be improved by traversing the expression fully and checking the presence of get_node at any level.
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if ( ! member . variable - > is_static & & ! member . variable - > onready & & member . variable - > initializer & & ( member . variable - > initializer - > type = = GDScriptParser : : Node : : GET_NODE | | member . variable - > initializer - > type = = GDScriptParser : : Node : : CALL | | member . variable - > initializer - > type = = GDScriptParser : : Node : : CAST ) ) {
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GDScriptParser : : Node * expr = member . variable - > initializer ;
if ( expr - > type = = GDScriptParser : : Node : : CAST ) {
expr = static_cast < GDScriptParser : : CastNode * > ( expr ) - > operand ;
}
bool is_get_node = expr - > type = = GDScriptParser : : Node : : GET_NODE ;
bool is_using_shorthand = is_get_node ;
if ( ! is_get_node & & expr - > type = = GDScriptParser : : Node : : CALL ) {
is_using_shorthand = false ;
GDScriptParser : : CallNode * call = static_cast < GDScriptParser : : CallNode * > ( expr ) ;
if ( call - > function_name = = SNAME ( " get_node " ) ) {
switch ( call - > get_callee_type ( ) ) {
case GDScriptParser : : Node : : IDENTIFIER : {
is_get_node = true ;
} break ;
case GDScriptParser : : Node : : SUBSCRIPT : {
GDScriptParser : : SubscriptNode * subscript = static_cast < GDScriptParser : : SubscriptNode * > ( call - > callee ) ;
is_get_node = subscript - > is_attribute & & subscript - > base - > type = = GDScriptParser : : Node : : SELF ;
} break ;
default :
break ;
}
}
}
if ( is_get_node ) {
parser - > push_warning ( member . variable , GDScriptWarning : : GET_NODE_DEFAULT_WITHOUT_ONREADY , is_using_shorthand ? " $ " : " get_node() " ) ;
}
}
}
# endif
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} break ;
case GDScriptParser : : ClassNode : : Member : : CONSTANT : {
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check_class_member_name_conflict ( p_class , member . constant - > identifier - > name , member . constant ) ;
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member . constant - > set_datatype ( resolving_datatype ) ;
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resolve_constant ( member . constant , false ) ;
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// Apply annotations.
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for ( GDScriptParser : : AnnotationNode * & E : member . constant - > annotations ) {
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resolve_annotation ( E ) ;
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E - > apply ( parser , member . constant ) ;
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}
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} break ;
case GDScriptParser : : ClassNode : : Member : : SIGNAL : {
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check_class_member_name_conflict ( p_class , member . signal - > identifier - > name , member . signal ) ;
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member . signal - > set_datatype ( resolving_datatype ) ;
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// This is the _only_ way to declare a signal. Therefore, we can generate its
// MethodInfo inline so it's a tiny bit more efficient.
MethodInfo mi = MethodInfo ( member . signal - > identifier - > name ) ;
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for ( int j = 0 ; j < member . signal - > parameters . size ( ) ; j + + ) {
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GDScriptParser : : ParameterNode * param = member . signal - > parameters [ j ] ;
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GDScriptParser : : DataType param_type = type_from_metatype ( resolve_datatype ( param - > datatype_specifier ) ) ;
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param - > set_datatype ( param_type ) ;
mi . arguments . push_back ( PropertyInfo ( param_type . builtin_type , param - > identifier - > name ) ) ;
// TODO: add signal parameter default values
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}
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member . signal - > set_datatype ( make_signal_type ( mi ) ) ;
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// Apply annotations.
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for ( GDScriptParser : : AnnotationNode * & E : member . signal - > annotations ) {
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resolve_annotation ( E ) ;
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E - > apply ( parser , member . signal ) ;
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}
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} break ;
case GDScriptParser : : ClassNode : : Member : : ENUM : {
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check_class_member_name_conflict ( p_class , member . m_enum - > identifier - > name , member . m_enum ) ;
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member . m_enum - > set_datatype ( resolving_datatype ) ;
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GDScriptParser : : DataType enum_type = make_enum_type ( member . m_enum - > identifier - > name , p_class - > fqcn , true ) ;
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const GDScriptParser : : EnumNode * prev_enum = current_enum ;
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current_enum = member . m_enum ;
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Dictionary dictionary ;
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for ( int j = 0 ; j < member . m_enum - > values . size ( ) ; j + + ) {
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GDScriptParser : : EnumNode : : Value & element = member . m_enum - > values . write [ j ] ;
if ( element . custom_value ) {
reduce_expression ( element . custom_value ) ;
if ( ! element . custom_value - > is_constant ) {
push_error ( R " (Enum values must be constant.) " , element . custom_value ) ;
} else if ( element . custom_value - > reduced_value . get_type ( ) ! = Variant : : INT ) {
push_error ( R " (Enum values must be integers.) " , element . custom_value ) ;
} else {
element . value = element . custom_value - > reduced_value ;
element . resolved = true ;
}
} else {
if ( element . index > 0 ) {
element . value = element . parent_enum - > values [ element . index - 1 ] . value + 1 ;
} else {
element . value = 0 ;
}
element . resolved = true ;
}
enum_type . enum_values [ element . identifier - > name ] = element . value ;
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dictionary [ String ( element . identifier - > name ) ] = element . value ;
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}
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current_enum = prev_enum ;
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dictionary . make_read_only ( ) ;
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member . m_enum - > set_datatype ( enum_type ) ;
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member . m_enum - > dictionary = dictionary ;
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// Apply annotations.
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for ( GDScriptParser : : AnnotationNode * & E : member . m_enum - > annotations ) {
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resolve_annotation ( E ) ;
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E - > apply ( parser , member . m_enum ) ;
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}
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} break ;
case GDScriptParser : : ClassNode : : Member : : FUNCTION :
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for ( GDScriptParser : : AnnotationNode * & E : member . function - > annotations ) {
resolve_annotation ( E ) ;
E - > apply ( parser , member . function ) ;
}
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resolve_function_signature ( member . function , p_source ) ;
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break ;
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case GDScriptParser : : ClassNode : : Member : : ENUM_VALUE : {
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member . enum_value . identifier - > set_datatype ( resolving_datatype ) ;
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if ( member . enum_value . custom_value ) {
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check_class_member_name_conflict ( p_class , member . enum_value . identifier - > name , member . enum_value . custom_value ) ;
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const GDScriptParser : : EnumNode * prev_enum = current_enum ;
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current_enum = member . enum_value . parent_enum ;
reduce_expression ( member . enum_value . custom_value ) ;
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current_enum = prev_enum ;
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if ( ! member . enum_value . custom_value - > is_constant ) {
push_error ( R " (Enum values must be constant.) " , member . enum_value . custom_value ) ;
} else if ( member . enum_value . custom_value - > reduced_value . get_type ( ) ! = Variant : : INT ) {
push_error ( R " (Enum values must be integers.) " , member . enum_value . custom_value ) ;
} else {
member . enum_value . value = member . enum_value . custom_value - > reduced_value ;
member . enum_value . resolved = true ;
}
} else {
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check_class_member_name_conflict ( p_class , member . enum_value . identifier - > name , member . enum_value . parent_enum ) ;
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if ( member . enum_value . index > 0 ) {
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const GDScriptParser : : EnumNode : : Value & prev_value = member . enum_value . parent_enum - > values [ member . enum_value . index - 1 ] ;
resolve_class_member ( p_class , prev_value . identifier - > name , member . enum_value . identifier ) ;
member . enum_value . value = prev_value . value + 1 ;
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} else {
member . enum_value . value = 0 ;
}
member . enum_value . resolved = true ;
}
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// Also update the original references.
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member . enum_value . parent_enum - > values . set ( member . enum_value . index , member . enum_value ) ;
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member . enum_value . identifier - > set_datatype ( make_enum_type ( UNNAMED_ENUM , p_class - > fqcn , false ) ) ;
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} break ;
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case GDScriptParser : : ClassNode : : Member : : CLASS :
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check_class_member_name_conflict ( p_class , member . m_class - > identifier - > name , member . m_class ) ;
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// If it's already resolving, that's ok.
if ( ! member . m_class - > base_type . is_resolving ( ) ) {
resolve_class_inheritance ( member . m_class , p_source ) ;
}
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break ;
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case GDScriptParser : : ClassNode : : Member : : GROUP :
// No-op, but needed to silence warnings.
break ;
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case GDScriptParser : : ClassNode : : Member : : UNDEFINED :
ERR_PRINT ( " Trying to resolve undefined member. " ) ;
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break ;
}
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# ifdef DEBUG_ENABLED
parser - > ignored_warnings = previously_ignored_warnings ;
# endif
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}
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parser - > current_class = previous_class ;
}
void GDScriptAnalyzer : : resolve_class_interface ( GDScriptParser : : ClassNode * p_class , const GDScriptParser : : Node * p_source ) {
if ( p_source = = nullptr & & parser - > has_class ( p_class ) ) {
p_source = p_class ;
}
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# ifdef DEBUG_ENABLED
bool has_static_data = p_class - > has_static_data ;
# endif
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if ( ! p_class - > resolved_interface ) {
if ( ! parser - > has_class ( p_class ) ) {
String script_path = p_class - > get_datatype ( ) . script_path ;
Ref < GDScriptParserRef > parser_ref = get_parser_for ( script_path ) ;
if ( parser_ref . is_null ( ) ) {
push_error ( vformat ( R " (Could not find script " % s " .) " , script_path ) , p_source ) ;
return ;
}
Error err = parser_ref - > raise_status ( GDScriptParserRef : : PARSED ) ;
if ( err ) {
push_error ( vformat ( R " (Could not resolve script " % s " : %s.) " , script_path , error_names [ err ] ) , p_source ) ;
return ;
}
ERR_FAIL_COND_MSG ( ! parser_ref - > get_parser ( ) - > has_class ( p_class ) , R " (Parser bug: Mismatched external parser.) " ) ;
GDScriptAnalyzer * other_analyzer = parser_ref - > get_analyzer ( ) ;
GDScriptParser * other_parser = parser_ref - > get_parser ( ) ;
int error_count = other_parser - > errors . size ( ) ;
other_analyzer - > resolve_class_interface ( p_class ) ;
if ( other_parser - > errors . size ( ) > error_count ) {
push_error ( vformat ( R " (Could not resolve class " % s " .) " , p_class - > fqcn ) , p_source ) ;
}
return ;
}
p_class - > resolved_interface = true ;
if ( resolve_class_inheritance ( p_class ) ! = OK ) {
return ;
}
GDScriptParser : : DataType base_type = p_class - > base_type ;
if ( base_type . kind = = GDScriptParser : : DataType : : CLASS ) {
GDScriptParser : : ClassNode * base_class = base_type . class_type ;
resolve_class_interface ( base_class , p_class ) ;
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}
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for ( int i = 0 ; i < p_class - > members . size ( ) ; i + + ) {
resolve_class_member ( p_class , i ) ;
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# ifdef DEBUG_ENABLED
if ( ! has_static_data ) {
GDScriptParser : : ClassNode : : Member member = p_class - > members [ i ] ;
if ( member . type = = GDScriptParser : : ClassNode : : Member : : CLASS ) {
has_static_data = member . m_class - > has_static_data ;
}
}
# endif
}
# ifdef DEBUG_ENABLED
if ( ! has_static_data & & p_class - > annotated_static_unload ) {
GDScriptParser : : Node * static_unload = nullptr ;
for ( GDScriptParser : : AnnotationNode * node : p_class - > annotations ) {
if ( node - > name = = " @static_unload " ) {
static_unload = node ;
break ;
}
}
parser - > push_warning ( static_unload ? static_unload : p_class , GDScriptWarning : : REDUNDANT_STATIC_UNLOAD ) ;
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}
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# endif
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}
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}
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void GDScriptAnalyzer : : resolve_class_interface ( GDScriptParser : : ClassNode * p_class , bool p_recursive ) {
resolve_class_interface ( p_class ) ;
if ( p_recursive ) {
for ( int i = 0 ; i < p_class - > members . size ( ) ; i + + ) {
GDScriptParser : : ClassNode : : Member member = p_class - > members [ i ] ;
if ( member . type = = GDScriptParser : : ClassNode : : Member : : CLASS ) {
resolve_class_interface ( member . m_class , true ) ;
}
}
}
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}
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void GDScriptAnalyzer : : resolve_class_body ( GDScriptParser : : ClassNode * p_class , const GDScriptParser : : Node * p_source ) {
if ( p_source = = nullptr & & parser - > has_class ( p_class ) ) {
p_source = p_class ;
}
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if ( p_class - > resolved_body ) {
return ;
}
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if ( ! parser - > has_class ( p_class ) ) {
String script_path = p_class - > get_datatype ( ) . script_path ;
Ref < GDScriptParserRef > parser_ref = get_parser_for ( script_path ) ;
if ( parser_ref . is_null ( ) ) {
push_error ( vformat ( R " (Could not find script " % s " .) " , script_path ) , p_source ) ;
return ;
}
Error err = parser_ref - > raise_status ( GDScriptParserRef : : PARSED ) ;
if ( err ) {
push_error ( vformat ( R " (Could not resolve script " % s " : %s.) " , script_path , error_names [ err ] ) , p_source ) ;
return ;
}
ERR_FAIL_COND_MSG ( ! parser_ref - > get_parser ( ) - > has_class ( p_class ) , R " (Parser bug: Mismatched external parser.) " ) ;
GDScriptAnalyzer * other_analyzer = parser_ref - > get_analyzer ( ) ;
GDScriptParser * other_parser = parser_ref - > get_parser ( ) ;
int error_count = other_parser - > errors . size ( ) ;
other_analyzer - > resolve_class_body ( p_class ) ;
if ( other_parser - > errors . size ( ) > error_count ) {
push_error ( vformat ( R " (Could not resolve class " % s " .) " , p_class - > fqcn ) , p_source ) ;
}
return ;
}
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p_class - > resolved_body = true ;
GDScriptParser : : ClassNode * previous_class = parser - > current_class ;
parser - > current_class = p_class ;
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resolve_class_interface ( p_class , p_source ) ;
GDScriptParser : : DataType base_type = p_class - > base_type ;
if ( base_type . kind = = GDScriptParser : : DataType : : CLASS ) {
GDScriptParser : : ClassNode * base_class = base_type . class_type ;
resolve_class_body ( base_class , p_class ) ;
}
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// Do functions, properties, and groups now.
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for ( int i = 0 ; i < p_class - > members . size ( ) ; i + + ) {
GDScriptParser : : ClassNode : : Member member = p_class - > members [ i ] ;
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if ( member . type = = GDScriptParser : : ClassNode : : Member : : FUNCTION ) {
// Apply annotations.
for ( GDScriptParser : : AnnotationNode * & E : member . function - > annotations ) {
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resolve_annotation ( E ) ;
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E - > apply ( parser , member . function ) ;
}
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resolve_function_body ( member . function ) ;
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} else if ( member . type = = GDScriptParser : : ClassNode : : Member : : VARIABLE & & member . variable - > property ! = GDScriptParser : : VariableNode : : PROP_NONE ) {
if ( member . variable - > property = = GDScriptParser : : VariableNode : : PROP_INLINE ) {
if ( member . variable - > getter ! = nullptr ) {
member . variable - > getter - > set_datatype ( member . variable - > datatype ) ;
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resolve_function_body ( member . variable - > getter ) ;
}
if ( member . variable - > setter ! = nullptr ) {
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resolve_function_signature ( member . variable - > setter ) ;
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if ( member . variable - > setter - > parameters . size ( ) > 0 ) {
member . variable - > setter - > parameters [ 0 ] - > datatype_specifier = member . variable - > datatype_specifier ;
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member . variable - > setter - > parameters [ 0 ] - > set_datatype ( member . get_datatype ( ) ) ;
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}
resolve_function_body ( member . variable - > setter ) ;
}
}
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} else if ( member . type = = GDScriptParser : : ClassNode : : Member : : GROUP ) {
// Apply annotation (`@export_{category,group,subgroup}`).
resolve_annotation ( member . annotation ) ;
member . annotation - > apply ( parser , nullptr ) ;
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}
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}
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// Check unused variables and datatypes of property getters and setters.
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for ( int i = 0 ; i < p_class - > members . size ( ) ; i + + ) {
GDScriptParser : : ClassNode : : Member member = p_class - > members [ i ] ;
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if ( member . type = = GDScriptParser : : ClassNode : : Member : : VARIABLE ) {
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# ifdef DEBUG_ENABLED
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HashSet < GDScriptWarning : : Code > previously_ignored_warnings = parser - > ignored_warnings ;
for ( GDScriptWarning : : Code ignored_warning : member . variable - > ignored_warnings ) {
parser - > ignored_warnings . insert ( ignored_warning ) ;
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}
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if ( member . variable - > usages = = 0 & & String ( member . variable - > identifier - > name ) . begins_with ( " _ " ) ) {
parser - > push_warning ( member . variable - > identifier , GDScriptWarning : : UNUSED_PRIVATE_CLASS_VARIABLE , member . variable - > identifier - > name ) ;
}
# endif
if ( member . variable - > property = = GDScriptParser : : VariableNode : : PROP_SETGET ) {
GDScriptParser : : FunctionNode * getter_function = nullptr ;
GDScriptParser : : FunctionNode * setter_function = nullptr ;
bool has_valid_getter = false ;
bool has_valid_setter = false ;
if ( member . variable - > getter_pointer ! = nullptr ) {
if ( p_class - > has_function ( member . variable - > getter_pointer - > name ) ) {
getter_function = p_class - > get_member ( member . variable - > getter_pointer - > name ) . function ;
}
if ( getter_function = = nullptr ) {
push_error ( vformat ( R " (Getter " % s " not found.) " , member . variable - > getter_pointer - > name ) , member . variable ) ;
} else {
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GDScriptParser : : DataType return_datatype = getter_function - > datatype ;
if ( getter_function - > return_type ! = nullptr ) {
return_datatype = getter_function - > return_type - > datatype ;
return_datatype . is_meta_type = false ;
}
if ( getter_function - > parameters . size ( ) ! = 0 | | return_datatype . has_no_type ( ) ) {
push_error ( vformat ( R " (Function " % s " cannot be used as getter because of its signature.) " , getter_function - > identifier - > name ) , member . variable ) ;
} else if ( ! is_type_compatible ( member . variable - > datatype , return_datatype , true ) ) {
push_error ( vformat ( R " (Function with return type " % s " cannot be used as getter for a property of type " % s " .) " , return_datatype . to_string ( ) , member . variable - > datatype . to_string ( ) ) , member . variable ) ;
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} else {
has_valid_getter = true ;
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# ifdef DEBUG_ENABLED
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if ( member . variable - > datatype . builtin_type = = Variant : : INT & & return_datatype . builtin_type = = Variant : : FLOAT ) {
parser - > push_warning ( member . variable , GDScriptWarning : : NARROWING_CONVERSION ) ;
}
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# endif
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}
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}
}
if ( member . variable - > setter_pointer ! = nullptr ) {
if ( p_class - > has_function ( member . variable - > setter_pointer - > name ) ) {
setter_function = p_class - > get_member ( member . variable - > setter_pointer - > name ) . function ;
}
if ( setter_function = = nullptr ) {
push_error ( vformat ( R " (Setter " % s " not found.) " , member . variable - > setter_pointer - > name ) , member . variable ) ;
} else if ( setter_function - > parameters . size ( ) ! = 1 ) {
push_error ( vformat ( R " (Function " % s " cannot be used as setter because of its signature.) " , setter_function - > identifier - > name ) , member . variable ) ;
} else if ( ! is_type_compatible ( member . variable - > datatype , setter_function - > parameters [ 0 ] - > datatype , true ) ) {
push_error ( vformat ( R " (Function with argument type " % s " cannot be used as setter for a property of type " % s " .) " , setter_function - > parameters [ 0 ] - > datatype . to_string ( ) , member . variable - > datatype . to_string ( ) ) , member . variable ) ;
} else {
has_valid_setter = true ;
# ifdef DEBUG_ENABLED
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if ( member . variable - > datatype . builtin_type = = Variant : : FLOAT & & setter_function - > parameters [ 0 ] - > datatype . builtin_type = = Variant : : INT ) {
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parser - > push_warning ( member . variable , GDScriptWarning : : NARROWING_CONVERSION ) ;
}
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# endif
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}
}
if ( member . variable - > datatype . is_variant ( ) & & has_valid_getter & & has_valid_setter ) {
if ( ! is_type_compatible ( getter_function - > datatype , setter_function - > parameters [ 0 ] - > datatype , true ) ) {
push_error ( vformat ( R " (Getter with type " % s " cannot be used along with setter of type " % s " .) " , getter_function - > datatype . to_string ( ) , setter_function - > parameters [ 0 ] - > datatype . to_string ( ) ) , member . variable ) ;
}
}
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}
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# ifdef DEBUG_ENABLED
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parser - > ignored_warnings = previously_ignored_warnings ;
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# endif // DEBUG_ENABLED
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}
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}
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if ( ! pending_body_resolution_lambdas . is_empty ( ) ) {
ERR_PRINT ( " GDScript bug (please report): Not all pending lambda bodies were resolved in time. " ) ;
resolve_pending_lambda_bodies ( ) ;
}
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parser - > current_class = previous_class ;
}
void GDScriptAnalyzer : : resolve_class_body ( GDScriptParser : : ClassNode * p_class , bool p_recursive ) {
resolve_class_body ( p_class ) ;
if ( p_recursive ) {
for ( int i = 0 ; i < p_class - > members . size ( ) ; i + + ) {
GDScriptParser : : ClassNode : : Member member = p_class - > members [ i ] ;
if ( member . type = = GDScriptParser : : ClassNode : : Member : : CLASS ) {
resolve_class_body ( member . m_class , true ) ;
}
}
}
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}
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void GDScriptAnalyzer : : resolve_node ( GDScriptParser : : Node * p_node , bool p_is_root ) {
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ERR_FAIL_COND_MSG ( p_node = = nullptr , " Trying to resolve type of a null node. " ) ;
switch ( p_node - > type ) {
case GDScriptParser : : Node : : NONE :
break ; // Unreachable.
case GDScriptParser : : Node : : CLASS :
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if ( OK = = resolve_class_inheritance ( static_cast < GDScriptParser : : ClassNode * > ( p_node ) , true ) ) {
resolve_class_interface ( static_cast < GDScriptParser : : ClassNode * > ( p_node ) , true ) ;
resolve_class_body ( static_cast < GDScriptParser : : ClassNode * > ( p_node ) , true ) ;
}
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break ;
case GDScriptParser : : Node : : CONSTANT :
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resolve_constant ( static_cast < GDScriptParser : : ConstantNode * > ( p_node ) , true ) ;
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break ;
case GDScriptParser : : Node : : FOR :
resolve_for ( static_cast < GDScriptParser : : ForNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : IF :
resolve_if ( static_cast < GDScriptParser : : IfNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : SUITE :
resolve_suite ( static_cast < GDScriptParser : : SuiteNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : VARIABLE :
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resolve_variable ( static_cast < GDScriptParser : : VariableNode * > ( p_node ) , true ) ;
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break ;
case GDScriptParser : : Node : : WHILE :
resolve_while ( static_cast < GDScriptParser : : WhileNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : ANNOTATION :
resolve_annotation ( static_cast < GDScriptParser : : AnnotationNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : ASSERT :
resolve_assert ( static_cast < GDScriptParser : : AssertNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : MATCH :
resolve_match ( static_cast < GDScriptParser : : MatchNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : MATCH_BRANCH :
resolve_match_branch ( static_cast < GDScriptParser : : MatchBranchNode * > ( p_node ) , nullptr ) ;
break ;
case GDScriptParser : : Node : : PARAMETER :
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resolve_parameter ( static_cast < GDScriptParser : : ParameterNode * > ( p_node ) ) ;
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break ;
case GDScriptParser : : Node : : PATTERN :
resolve_match_pattern ( static_cast < GDScriptParser : : PatternNode * > ( p_node ) , nullptr ) ;
break ;
case GDScriptParser : : Node : : RETURN :
resolve_return ( static_cast < GDScriptParser : : ReturnNode * > ( p_node ) ) ;
break ;
case GDScriptParser : : Node : : TYPE :
resolve_datatype ( static_cast < GDScriptParser : : TypeNode * > ( p_node ) ) ;
break ;
// Resolving expression is the same as reducing them.
case GDScriptParser : : Node : : ARRAY :
case GDScriptParser : : Node : : ASSIGNMENT :
case GDScriptParser : : Node : : AWAIT :
case GDScriptParser : : Node : : BINARY_OPERATOR :
case GDScriptParser : : Node : : CALL :
case GDScriptParser : : Node : : CAST :
case GDScriptParser : : Node : : DICTIONARY :
case GDScriptParser : : Node : : GET_NODE :
case GDScriptParser : : Node : : IDENTIFIER :
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case GDScriptParser : : Node : : LAMBDA :
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case GDScriptParser : : Node : : LITERAL :
case GDScriptParser : : Node : : PRELOAD :
case GDScriptParser : : Node : : SELF :
case GDScriptParser : : Node : : SUBSCRIPT :
case GDScriptParser : : Node : : TERNARY_OPERATOR :
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case GDScriptParser : : Node : : TYPE_TEST :
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case GDScriptParser : : Node : : UNARY_OPERATOR :
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reduce_expression ( static_cast < GDScriptParser : : ExpressionNode * > ( p_node ) , p_is_root ) ;
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break ;
case GDScriptParser : : Node : : BREAK :
case GDScriptParser : : Node : : BREAKPOINT :
case GDScriptParser : : Node : : CONTINUE :
case GDScriptParser : : Node : : ENUM :
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case GDScriptParser : : Node : : FUNCTION :
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case GDScriptParser : : Node : : PASS :
case GDScriptParser : : Node : : SIGNAL :
// Nothing to do.
break ;
}
}
void GDScriptAnalyzer : : resolve_annotation ( GDScriptParser : : AnnotationNode * p_annotation ) {
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ERR_FAIL_COND_MSG ( ! parser - > valid_annotations . has ( p_annotation - > name ) , vformat ( R " (Annotation " % s " not found to validate.) " , p_annotation - > name ) ) ;
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if ( p_annotation - > is_resolved ) {
return ;
}
p_annotation - > is_resolved = true ;
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const MethodInfo & annotation_info = parser - > valid_annotations [ p_annotation - > name ] . info ;
const List < PropertyInfo > : : Element * E = annotation_info . arguments . front ( ) ;
for ( int i = 0 ; i < p_annotation - > arguments . size ( ) ; i + + ) {
GDScriptParser : : ExpressionNode * argument = p_annotation - > arguments [ i ] ;
const PropertyInfo & argument_info = E - > get ( ) ;
if ( E - > next ( ) ! = nullptr ) {
E = E - > next ( ) ;
}
reduce_expression ( argument ) ;
if ( ! argument - > is_constant ) {
push_error ( vformat ( R " (Argument %d of annotation " % s " isn't a constant expression.) " , i + 1 , p_annotation - > name ) , argument ) ;
return ;
}
Variant value = argument - > reduced_value ;
if ( value . get_type ( ) ! = argument_info . type ) {
# ifdef DEBUG_ENABLED
if ( argument_info . type = = Variant : : INT & & value . get_type ( ) = = Variant : : FLOAT ) {
parser - > push_warning ( argument , GDScriptWarning : : NARROWING_CONVERSION ) ;
}
# endif
if ( ! Variant : : can_convert_strict ( value . get_type ( ) , argument_info . type ) ) {
push_error ( vformat ( R " (Invalid argument for annotation " % s " : argument %d should be " % s " but is " % s " .) " , p_annotation - > name , i + 1 , Variant : : get_type_name ( argument_info . type ) , argument - > get_datatype ( ) . to_string ( ) ) , argument ) ;
return ;
}
Variant converted_to ;
const Variant * converted_from = & value ;
Callable : : CallError call_error ;
Variant : : construct ( argument_info . type , converted_to , & converted_from , 1 , call_error ) ;
if ( call_error . error ! = Callable : : CallError : : CALL_OK ) {
push_error ( vformat ( R " (Cannot convert argument %d of annotation " % s " from " % s " to " % s " .) " , i + 1 , p_annotation - > name , Variant : : get_type_name ( value . get_type ( ) ) , Variant : : get_type_name ( argument_info . type ) ) , argument ) ;
return ;
}
value = converted_to ;
}
p_annotation - > resolved_arguments . push_back ( value ) ;
}
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}
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void GDScriptAnalyzer : : resolve_function_signature ( GDScriptParser : : FunctionNode * p_function , const GDScriptParser : : Node * p_source , bool p_is_lambda ) {
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if ( p_source = = nullptr ) {
p_source = p_function ;
}
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StringName function_name = p_function - > identifier ! = nullptr ? p_function - > identifier - > name : StringName ( ) ;
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if ( p_function - > get_datatype ( ) . is_resolving ( ) ) {
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push_error ( vformat ( R " (Could not resolve function " % s " : Cyclic reference.) " , function_name ) , p_source ) ;
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return ;
}
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if ( p_function - > resolved_signature ) {
return ;
}
p_function - > resolved_signature = true ;
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# ifdef DEBUG_ENABLED
HashSet < GDScriptWarning : : Code > previously_ignored_warnings = parser - > ignored_warnings ;
for ( GDScriptWarning : : Code ignored_warning : p_function - > ignored_warnings ) {
parser - > ignored_warnings . insert ( ignored_warning ) ;
}
# endif
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GDScriptParser : : FunctionNode * previous_function = parser - > current_function ;
parser - > current_function = p_function ;
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bool previous_static_context = static_context ;
static_context = p_function - > is_static ;
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GDScriptParser : : DataType prev_datatype = p_function - > get_datatype ( ) ;
GDScriptParser : : DataType resolving_datatype ;
resolving_datatype . kind = GDScriptParser : : DataType : : RESOLVING ;
p_function - > set_datatype ( resolving_datatype ) ;
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# ifdef TOOLS_ENABLED
int default_value_count = 0 ;
# endif // TOOLS_ENABLED
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for ( int i = 0 ; i < p_function - > parameters . size ( ) ; i + + ) {
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resolve_parameter ( p_function - > parameters [ i ] ) ;
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# ifdef DEBUG_ENABLED
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if ( p_function - > parameters [ i ] - > usages = = 0 & & ! String ( p_function - > parameters [ i ] - > identifier - > name ) . begins_with ( " _ " ) ) {
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String visible_name = function_name ;
if ( function_name = = StringName ( ) ) {
visible_name = p_is_lambda ? " <anonymous lambda> " : " <unknown function> " ;
}
parser - > push_warning ( p_function - > parameters [ i ] - > identifier , GDScriptWarning : : UNUSED_PARAMETER , visible_name , p_function - > parameters [ i ] - > identifier - > name ) ;
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}
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is_shadowing ( p_function - > parameters [ i ] - > identifier , " function parameter " , true ) ;
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# endif // DEBUG_ENABLED
# ifdef TOOLS_ENABLED
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if ( p_function - > parameters [ i ] - > initializer ) {
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default_value_count + + ;
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if ( p_function - > parameters [ i ] - > initializer - > is_constant ) {
p_function - > default_arg_values . push_back ( p_function - > parameters [ i ] - > initializer - > reduced_value ) ;
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} else {
p_function - > default_arg_values . push_back ( Variant ( ) ) ; // Prevent shift.
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}
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}
# endif // TOOLS_ENABLED
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}
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if ( ! p_is_lambda & & function_name = = GDScriptLanguage : : get_singleton ( ) - > strings . _init ) {
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// Constructor.
GDScriptParser : : DataType return_type = parser - > current_class - > get_datatype ( ) ;
return_type . is_meta_type = false ;
p_function - > set_datatype ( return_type ) ;
if ( p_function - > return_type ) {
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GDScriptParser : : DataType declared_return = resolve_datatype ( p_function - > return_type ) ;
if ( declared_return . kind ! = GDScriptParser : : DataType : : BUILTIN | | declared_return . builtin_type ! = Variant : : NIL ) {
push_error ( " Constructor cannot have an explicit return type. " , p_function - > return_type ) ;
}
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}
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} else if ( ! p_is_lambda & & function_name = = GDScriptLanguage : : get_singleton ( ) - > strings . _static_init ) {
// Static constructor.
GDScriptParser : : DataType return_type ;
return_type . kind = GDScriptParser : : DataType : : BUILTIN ;
return_type . builtin_type = Variant : : NIL ;
p_function - > set_datatype ( return_type ) ;
if ( p_function - > return_type ) {
GDScriptParser : : DataType declared_return = resolve_datatype ( p_function - > return_type ) ;
if ( declared_return . kind ! = GDScriptParser : : DataType : : BUILTIN | | declared_return . builtin_type ! = Variant : : NIL ) {
push_error ( " Static constructor cannot have an explicit return type. " , p_function - > return_type ) ;
}
}
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} else {
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if ( p_function - > return_type ! = nullptr ) {
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p_function - > set_datatype ( type_from_metatype ( resolve_datatype ( p_function - > return_type ) ) ) ;
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} else {
// In case the function is not typed, we can safely assume it's a Variant, so it's okay to mark as "inferred" here.
// It's not "undetected" to not mix up with unknown functions.
GDScriptParser : : DataType return_type ;
return_type . type_source = GDScriptParser : : DataType : : INFERRED ;
return_type . kind = GDScriptParser : : DataType : : VARIANT ;
p_function - > set_datatype ( return_type ) ;
}
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# ifdef TOOLS_ENABLED
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// Check if the function signature matches the parent. If not it's an error since it breaks polymorphism.
// Not for the constructor which can vary in signature.
GDScriptParser : : DataType base_type = parser - > current_class - > base_type ;
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base_type . is_meta_type = false ;
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GDScriptParser : : DataType parent_return_type ;
List < GDScriptParser : : DataType > parameters_types ;
int default_par_count = 0 ;
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BitField < MethodFlags > method_flags ;
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StringName native_base ;
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if ( ! p_is_lambda & & get_function_signature ( p_function , false , base_type , function_name , parent_return_type , parameters_types , default_par_count , method_flags , & native_base ) ) {
bool valid = p_function - > is_static = = method_flags . has_flag ( METHOD_FLAG_STATIC ) ;
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valid = valid & & parent_return_type = = p_function - > get_datatype ( ) ;
int par_count_diff = p_function - > parameters . size ( ) - parameters_types . size ( ) ;
valid = valid & & par_count_diff > = 0 ;
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valid = valid & & default_value_count > = default_par_count + par_count_diff ;
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int i = 0 ;
for ( const GDScriptParser : : DataType & par_type : parameters_types ) {
valid = valid & & par_type = = p_function - > parameters [ i + + ] - > get_datatype ( ) ;
}
if ( ! valid ) {
// Compute parent signature as a string to show in the error message.
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String parent_signature = String ( function_name ) + " ( " ;
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int j = 0 ;
for ( const GDScriptParser : : DataType & par_type : parameters_types ) {
if ( j > 0 ) {
parent_signature + = " , " ;
}
String parameter = par_type . to_string ( ) ;
if ( parameter = = " null " ) {
parameter = " Variant " ;
}
parent_signature + = parameter ;
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if ( j > = parameters_types . size ( ) - default_par_count ) {
parent_signature + = " = <default> " ;
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}
j + + ;
}
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parent_signature + = " ) -> " ;
const String return_type = parent_return_type . is_hard_type ( ) ? parent_return_type . to_string ( ) : " Variant " ;
if ( return_type = = " null " ) {
parent_signature + = " void " ;
} else {
parent_signature + = return_type ;
}
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push_error ( vformat ( R " (The function signature doesn't match the parent. Parent signature is " % s " .) " , parent_signature ) , p_function ) ;
}
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# ifdef DEBUG_ENABLED
if ( native_base ! = StringName ( ) ) {
parser - > push_warning ( p_function , GDScriptWarning : : NATIVE_METHOD_OVERRIDE , function_name , native_base ) ;
}
# endif
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}
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# endif // TOOLS_ENABLED
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}
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if ( p_function - > get_datatype ( ) . is_resolving ( ) ) {
p_function - > set_datatype ( prev_datatype ) ;
}
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# ifdef DEBUG_ENABLED
parser - > ignored_warnings = previously_ignored_warnings ;
# endif
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parser - > current_function = previous_function ;
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static_context = previous_static_context ;
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}
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void GDScriptAnalyzer : : resolve_function_body ( GDScriptParser : : FunctionNode * p_function , bool p_is_lambda ) {
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if ( p_function - > resolved_body ) {
return ;
}
p_function - > resolved_body = true ;
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# ifdef DEBUG_ENABLED
HashSet < GDScriptWarning : : Code > previously_ignored_warnings = parser - > ignored_warnings ;
for ( GDScriptWarning : : Code ignored_warning : p_function - > ignored_warnings ) {
parser - > ignored_warnings . insert ( ignored_warning ) ;
}
# endif
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GDScriptParser : : FunctionNode * previous_function = parser - > current_function ;
parser - > current_function = p_function ;
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bool previous_static_context = static_context ;
static_context = p_function - > is_static ;
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resolve_suite ( p_function - > body ) ;
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if ( ! p_function - > get_datatype ( ) . is_hard_type ( ) & & p_function - > body - > get_datatype ( ) . is_set ( ) ) {
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// Use the suite inferred type if return isn't explicitly set.
p_function - > set_datatype ( p_function - > body - > get_datatype ( ) ) ;
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} else if ( p_function - > get_datatype ( ) . is_hard_type ( ) & & ( p_function - > get_datatype ( ) . kind ! = GDScriptParser : : DataType : : BUILTIN | | p_function - > get_datatype ( ) . builtin_type ! = Variant : : NIL ) ) {
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if ( ! p_function - > body - > has_return & & ( p_is_lambda | | p_function - > identifier - > name ! = GDScriptLanguage : : get_singleton ( ) - > strings . _init ) ) {
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push_error ( R " (Not all code paths return a value.) " , p_function ) ;
}
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}
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# ifdef DEBUG_ENABLED
parser - > ignored_warnings = previously_ignored_warnings ;
# endif
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parser - > current_function = previous_function ;
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static_context = previous_static_context ;
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}
void GDScriptAnalyzer : : decide_suite_type ( GDScriptParser : : Node * p_suite , GDScriptParser : : Node * p_statement ) {
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if ( p_statement = = nullptr ) {
return ;
}
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switch ( p_statement - > type ) {
case GDScriptParser : : Node : : IF :
case GDScriptParser : : Node : : FOR :
case GDScriptParser : : Node : : MATCH :
case GDScriptParser : : Node : : PATTERN :
case GDScriptParser : : Node : : RETURN :
case GDScriptParser : : Node : : WHILE :
// Use return or nested suite type as this suite type.
if ( p_suite - > get_datatype ( ) . is_set ( ) & & ( p_suite - > get_datatype ( ) ! = p_statement - > get_datatype ( ) ) ) {
// Mixed types.
// TODO: This could use the common supertype instead.
p_suite - > datatype . kind = GDScriptParser : : DataType : : VARIANT ;
p_suite - > datatype . type_source = GDScriptParser : : DataType : : UNDETECTED ;
} else {
p_suite - > set_datatype ( p_statement - > get_datatype ( ) ) ;
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p_suite - > datatype . type_source = GDScriptParser : : DataType : : INFERRED ;
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}
break ;
default :
break ;
}
}
void GDScriptAnalyzer : : resolve_suite ( GDScriptParser : : SuiteNode * p_suite ) {
for ( int i = 0 ; i < p_suite - > statements . size ( ) ; i + + ) {
GDScriptParser : : Node * stmt = p_suite - > statements [ i ] ;
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// Apply annotations.
for ( GDScriptParser : : AnnotationNode * & E : stmt - > annotations ) {
resolve_annotation ( E ) ;
E - > apply ( parser , stmt ) ;
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}
# ifdef DEBUG_ENABLED
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HashSet < GDScriptWarning : : Code > previously_ignored_warnings = parser - > ignored_warnings ;
for ( GDScriptWarning : : Code ignored_warning : stmt - > ignored_warnings ) {
parser - > ignored_warnings . insert ( ignored_warning ) ;
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}
# endif // DEBUG_ENABLED
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resolve_node ( stmt ) ;
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resolve_pending_lambda_bodies ( ) ;
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# ifdef DEBUG_ENABLED
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parser - > ignored_warnings = previously_ignored_warnings ;
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# endif // DEBUG_ENABLED
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decide_suite_type ( p_suite , stmt ) ;
}
}
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void GDScriptAnalyzer : : resolve_assignable ( GDScriptParser : : AssignableNode * p_assignable , const char * p_kind ) {
GDScriptParser : : DataType type ;
type . kind = GDScriptParser : : DataType : : VARIANT ;
bool is_constant = p_assignable - > type = = GDScriptParser : : Node : : CONSTANT ;
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# ifdef DEBUG_ENABLED
if ( p_assignable - > identifier ! = nullptr & & p_assignable - > identifier - > suite ! = nullptr & & p_assignable - > identifier - > suite - > parent_block ! = nullptr ) {
if ( p_assignable - > identifier - > suite - > parent_block - > has_local ( p_assignable - > identifier - > name ) ) {
const GDScriptParser : : SuiteNode : : Local & local = p_assignable - > identifier - > suite - > parent_block - > get_local ( p_assignable - > identifier - > name ) ;
parser - > push_warning ( p_assignable - > identifier , GDScriptWarning : : CONFUSABLE_LOCAL_DECLARATION , local . get_name ( ) , p_assignable - > identifier - > name ) ;
}
}
# endif
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GDScriptParser : : DataType specified_type ;
bool has_specified_type = p_assignable - > datatype_specifier ! = nullptr ;
if ( has_specified_type ) {
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specified_type = type_from_metatype ( resolve_datatype ( p_assignable - > datatype_specifier ) ) ;
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type = specified_type ;
}
if ( p_assignable - > initializer ! = nullptr ) {
reduce_expression ( p_assignable - > initializer ) ;
if ( p_assignable - > initializer - > type = = GDScriptParser : : Node : : ARRAY ) {
GDScriptParser : : ArrayNode * array = static_cast < GDScriptParser : : ArrayNode * > ( p_assignable - > initializer ) ;
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if ( has_specified_type & & specified_type . has_container_element_type ( ) ) {
update_array_literal_element_type ( array , specified_type . get_container_element_type ( ) ) ;
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}
}
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if ( is_constant & & ! p_assignable - > initializer - > is_constant ) {
bool is_initializer_value_reduced = false ;
Variant initializer_value = make_expression_reduced_value ( p_assignable - > initializer , is_initializer_value_reduced ) ;
if ( is_initializer_value_reduced ) {
p_assignable - > initializer - > is_constant = true ;
p_assignable - > initializer - > reduced_value = initializer_value ;
} else {
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push_error ( vformat ( R " (Assigned value for %s " % s " isn't a constant expression.) " , p_kind , p_assignable - > identifier - > name ) , p_assignable - > initializer ) ;
}
}
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if ( has_specified_type & & p_assignable - > initializer - > is_constant ) {
update_const_expression_builtin_type ( p_assignable - > initializer , specified_type , " assign " ) ;
}
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GDScriptParser : : DataType initializer_type = p_assignable - > initializer - > get_datatype ( ) ;
if ( p_assignable - > infer_datatype ) {
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if ( ! initializer_type . is_set ( ) | | initializer_type . has_no_type ( ) | | ! initializer_type . is_hard_type ( ) ) {
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push_error ( vformat ( R " (Cannot infer the type of " % s " %s because the value doesn't have a set type.) " , p_assignable - > identifier - > name , p_kind ) , p_assignable - > initializer ) ;
} else if ( initializer_type . kind = = GDScriptParser : : DataType : : BUILTIN & & initializer_type . builtin_type = = Variant : : NIL & & ! is_constant ) {
push_error ( vformat ( R " (Cannot infer the type of " % s " %s because the value is " null " .) " , p_assignable - > identifier - > name , p_kind ) , p_assignable - > initializer ) ;
}
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# ifdef DEBUG_ENABLED
if ( initializer_type . is_hard_type ( ) & & initializer_type . is_variant ( ) ) {
parser - > push_warning ( p_assignable , GDScriptWarning : : INFERENCE_ON_VARIANT , p_kind ) ;
}
# endif
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} else {
if ( ! initializer_type . is_set ( ) ) {
push_error ( vformat ( R " (Could not resolve type for %s " % s " .) " , p_kind , p_assignable - > identifier - > name ) , p_assignable - > initializer ) ;
}
}
if ( ! has_specified_type ) {
type = initializer_type ;
if ( ! type . is_set ( ) | | ( type . is_hard_type ( ) & & type . kind = = GDScriptParser : : DataType : : BUILTIN & & type . builtin_type = = Variant : : NIL & & ! is_constant ) ) {
type . kind = GDScriptParser : : DataType : : VARIANT ;
}
if ( p_assignable - > infer_datatype | | is_constant ) {
type . type_source = GDScriptParser : : DataType : : ANNOTATED_INFERRED ;
} else {
type . type_source = GDScriptParser : : DataType : : INFERRED ;
}
} else if ( ! specified_type . is_variant ( ) ) {
if ( initializer_type . is_variant ( ) | | ! initializer_type . is_hard_type ( ) ) {
mark_node_unsafe ( p_assignable - > initializer ) ;
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p_assignable - > use_conversion_assign = true ;
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if ( ! initializer_type . is_variant ( ) & & ! is_type_compatible ( specified_type , initializer_type , true , p_assignable - > initializer ) ) {
downgrade_node_type_source ( p_assignable - > initializer ) ;
}
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} else if ( ! is_type_compatible ( specified_type , initializer_type , true , p_assignable - > initializer ) ) {
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if ( ! is_constant & & is_type_compatible ( initializer_type , specified_type ) ) {
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mark_node_unsafe ( p_assignable - > initializer ) ;
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p_assignable - > use_conversion_assign = true ;
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} else {
push_error ( vformat ( R " (Cannot assign a value of type %s to %s " % s " with specified type %s.) " , initializer_type . to_string ( ) , p_kind , p_assignable - > identifier - > name , specified_type . to_string ( ) ) , p_assignable - > initializer ) ;
}
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} else if ( specified_type . has_container_element_type ( ) & & ! initializer_type . has_container_element_type ( ) ) {
mark_node_unsafe ( p_assignable - > initializer ) ;
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# ifdef DEBUG_ENABLED
} else if ( specified_type . builtin_type = = Variant : : INT & & initializer_type . builtin_type = = Variant : : FLOAT ) {
parser - > push_warning ( p_assignable - > initializer , GDScriptWarning : : NARROWING_CONVERSION ) ;
# endif
}
}
}
type . is_constant = is_constant ;
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type . is_read_only = false ;
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p_assignable - > set_datatype ( type ) ;
}
void GDScriptAnalyzer : : resolve_variable ( GDScriptParser : : VariableNode * p_variable , bool p_is_local ) {
static constexpr const char * kind = " variable " ;
resolve_assignable ( p_variable , kind ) ;
# ifdef DEBUG_ENABLED
if ( p_is_local ) {
if ( p_variable - > usages = = 0 & & ! String ( p_variable - > identifier - > name ) . begins_with ( " _ " ) ) {
parser - > push_warning ( p_variable , GDScriptWarning : : UNUSED_VARIABLE , p_variable - > identifier - > name ) ;
} else if ( p_variable - > assignments = = 0 ) {
parser - > push_warning ( p_variable , GDScriptWarning : : UNASSIGNED_VARIABLE , p_variable - > identifier - > name ) ;
}
}
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is_shadowing ( p_variable - > identifier , kind , p_is_local ) ;
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# endif
}
void GDScriptAnalyzer : : resolve_constant ( GDScriptParser : : ConstantNode * p_constant , bool p_is_local ) {
static constexpr const char * kind = " constant " ;
resolve_assignable ( p_constant , kind ) ;
# ifdef DEBUG_ENABLED
if ( p_is_local ) {
if ( p_constant - > usages = = 0 ) {
parser - > push_warning ( p_constant , GDScriptWarning : : UNUSED_LOCAL_CONSTANT , p_constant - > identifier - > name ) ;
}
}
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is_shadowing ( p_constant - > identifier , kind , p_is_local ) ;
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# endif
}
void GDScriptAnalyzer : : resolve_parameter ( GDScriptParser : : ParameterNode * p_parameter ) {
static constexpr const char * kind = " parameter " ;
resolve_assignable ( p_parameter , kind ) ;
}
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void GDScriptAnalyzer : : resolve_if ( GDScriptParser : : IfNode * p_if ) {
reduce_expression ( p_if - > condition ) ;
resolve_suite ( p_if - > true_block ) ;
p_if - > set_datatype ( p_if - > true_block - > get_datatype ( ) ) ;
if ( p_if - > false_block ! = nullptr ) {
resolve_suite ( p_if - > false_block ) ;
decide_suite_type ( p_if , p_if - > false_block ) ;
}
}
void GDScriptAnalyzer : : resolve_for ( GDScriptParser : : ForNode * p_for ) {
bool list_resolved = false ;
// Optimize constant range() call to not allocate an array.
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// Use int, Vector2i, Vector3i instead, which also can be used as range iterators.
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if ( p_for - > list & & p_for - > list - > type = = GDScriptParser : : Node : : CALL ) {
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GDScriptParser : : CallNode * call = static_cast < GDScriptParser : : CallNode * > ( p_for - > list ) ;
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GDScriptParser : : Node : : Type callee_type = call - > get_callee_type ( ) ;
if ( callee_type = = GDScriptParser : : Node : : IDENTIFIER ) {
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GDScriptParser : : IdentifierNode * callee = static_cast < GDScriptParser : : IdentifierNode * > ( call - > callee ) ;
if ( callee - > name = = " range " ) {
list_resolved = true ;
if ( call - > arguments . size ( ) < 1 ) {
push_error ( R " *(Invalid call for " range ( ) " function. Expected at least 1 argument, none given.)* " , call - > callee ) ;
} else if ( call - > arguments . size ( ) > 3 ) {
push_error ( vformat ( R " *(Invalid call for " range ( ) " function. Expected at most 3 arguments, %d given.)* " , call - > arguments . size ( ) ) , call - > callee ) ;
} else {
// Now we can optimize it.
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bool can_reduce = true ;
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Vector < Variant > args ;
args . resize ( call - > arguments . size ( ) ) ;
for ( int i = 0 ; i < call - > arguments . size ( ) ; i + + ) {
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GDScriptParser : : ExpressionNode * argument = call - > arguments [ i ] ;
reduce_expression ( argument ) ;
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if ( argument - > is_constant ) {
if ( argument - > reduced_value . get_type ( ) ! = Variant : : INT & & argument - > reduced_value . get_type ( ) ! = Variant : : FLOAT ) {
can_reduce = false ;
push_error ( vformat ( R " *(Invalid argument for " range ( ) " call. Argument %d should be int or float but " % s " was given.)* " , i + 1 , Variant : : get_type_name ( argument - > reduced_value . get_type ( ) ) ) , argument ) ;
}
if ( can_reduce ) {
args . write [ i ] = argument - > reduced_value ;
}
} else {
can_reduce = false ;
GDScriptParser : : DataType argument_type = argument - > get_datatype ( ) ;
if ( argument_type . is_variant ( ) | | ! argument_type . is_hard_type ( ) ) {
mark_node_unsafe ( argument ) ;
}
if ( ! argument_type . is_variant ( ) & & ( argument_type . builtin_type ! = Variant : : INT & & argument_type . builtin_type ! = Variant : : FLOAT ) ) {
if ( ! argument_type . is_hard_type ( ) ) {
downgrade_node_type_source ( argument ) ;
} else {
push_error ( vformat ( R " *(Invalid argument for " range ( ) " call. Argument %d should be int or float but " % s " was given.)* " , i + 1 , argument_type . to_string ( ) ) , argument ) ;
}
}
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}
}
Variant reduced ;
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if ( can_reduce ) {
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switch ( args . size ( ) ) {
case 1 :
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reduced = ( int32_t ) args [ 0 ] ;
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break ;
case 2 :
reduced = Vector2i ( args [ 0 ] , args [ 1 ] ) ;
break ;
case 3 :
reduced = Vector3i ( args [ 0 ] , args [ 1 ] , args [ 2 ] ) ;
break ;
}
p_for - > list - > is_constant = true ;
p_for - > list - > reduced_value = reduced ;
}
}
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if ( p_for - > list - > is_constant ) {
p_for - > list - > set_datatype ( type_from_variant ( p_for - > list - > reduced_value , p_for - > list ) ) ;
} else {
GDScriptParser : : DataType list_type ;
list_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
list_type . kind = GDScriptParser : : DataType : : BUILTIN ;
list_type . builtin_type = Variant : : ARRAY ;
p_for - > list - > set_datatype ( list_type ) ;
}
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}
}
}
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GDScriptParser : : DataType variable_type ;
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String list_visible_type = " <unresolved type> " ;
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if ( list_resolved ) {
variable_type . type_source = GDScriptParser : : DataType : : ANNOTATED_INFERRED ;
variable_type . kind = GDScriptParser : : DataType : : BUILTIN ;
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variable_type . builtin_type = Variant : : INT ;
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list_visible_type = " Array[int] " ; // NOTE: `range()` has `Array` return type.
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} else if ( p_for - > list ) {
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resolve_node ( p_for - > list , false ) ;
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GDScriptParser : : DataType list_type = p_for - > list - > get_datatype ( ) ;
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list_visible_type = list_type . to_string ( ) ;
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if ( ! list_type . is_hard_type ( ) ) {
mark_node_unsafe ( p_for - > list ) ;
}
if ( list_type . is_variant ( ) ) {
variable_type . kind = GDScriptParser : : DataType : : VARIANT ;
mark_node_unsafe ( p_for - > list ) ;
} else if ( list_type . has_container_element_type ( ) ) {
variable_type = list_type . get_container_element_type ( ) ;
variable_type . type_source = list_type . type_source ;
} else if ( list_type . is_typed_container_type ( ) ) {
variable_type = list_type . get_typed_container_type ( ) ;
variable_type . type_source = list_type . type_source ;
} else if ( list_type . builtin_type = = Variant : : INT | | list_type . builtin_type = = Variant : : FLOAT | | list_type . builtin_type = = Variant : : STRING ) {
variable_type . type_source = list_type . type_source ;
variable_type . kind = GDScriptParser : : DataType : : BUILTIN ;
variable_type . builtin_type = list_type . builtin_type ;
} else if ( list_type . builtin_type = = Variant : : VECTOR2I | | list_type . builtin_type = = Variant : : VECTOR3I ) {
variable_type . type_source = list_type . type_source ;
variable_type . kind = GDScriptParser : : DataType : : BUILTIN ;
variable_type . builtin_type = Variant : : INT ;
} else if ( list_type . builtin_type = = Variant : : VECTOR2 | | list_type . builtin_type = = Variant : : VECTOR3 ) {
variable_type . type_source = list_type . type_source ;
variable_type . kind = GDScriptParser : : DataType : : BUILTIN ;
variable_type . builtin_type = Variant : : FLOAT ;
} else if ( list_type . builtin_type = = Variant : : OBJECT ) {
GDScriptParser : : DataType return_type ;
List < GDScriptParser : : DataType > par_types ;
int default_arg_count = 0 ;
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BitField < MethodFlags > method_flags ;
if ( get_function_signature ( p_for - > list , false , list_type , CoreStringNames : : get_singleton ( ) - > _iter_get , return_type , par_types , default_arg_count , method_flags ) ) {
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variable_type = return_type ;
variable_type . type_source = list_type . type_source ;
} else if ( ! list_type . is_hard_type ( ) ) {
variable_type . kind = GDScriptParser : : DataType : : VARIANT ;
} else {
push_error ( vformat ( R " (Unable to iterate on object of type " % s " .) " , list_type . to_string ( ) ) , p_for - > list ) ;
}
} else if ( list_type . builtin_type = = Variant : : ARRAY | | list_type . builtin_type = = Variant : : DICTIONARY | | ! list_type . is_hard_type ( ) ) {
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variable_type . kind = GDScriptParser : : DataType : : VARIANT ;
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} else {
push_error ( vformat ( R " (Unable to iterate on value of type " % s " .) " , list_type . to_string ( ) ) , p_for - > list ) ;
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}
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}
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if ( p_for - > variable ) {
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if ( p_for - > datatype_specifier ) {
GDScriptParser : : DataType specified_type = type_from_metatype ( resolve_datatype ( p_for - > datatype_specifier ) ) ;
if ( ! specified_type . is_variant ( ) ) {
if ( variable_type . is_variant ( ) | | ! variable_type . is_hard_type ( ) ) {
mark_node_unsafe ( p_for - > variable ) ;
p_for - > use_conversion_assign = true ;
} else if ( ! is_type_compatible ( specified_type , variable_type , true , p_for - > variable ) ) {
if ( is_type_compatible ( variable_type , specified_type ) ) {
mark_node_unsafe ( p_for - > variable ) ;
p_for - > use_conversion_assign = true ;
} else {
push_error ( vformat ( R " (Unable to iterate on value of type " % s " with variable of type " % s " .) " , list_visible_type , specified_type . to_string ( ) ) , p_for - > datatype_specifier ) ;
}
} else if ( ! is_type_compatible ( specified_type , variable_type ) ) {
p_for - > use_conversion_assign = true ;
# ifdef DEBUG_ENABLED
} else {
parser - > push_warning ( p_for - > datatype_specifier , GDScriptWarning : : REDUNDANT_FOR_VARIABLE_TYPE , p_for - > variable - > name , variable_type . to_string ( ) , specified_type . to_string ( ) ) ;
# endif
}
# ifdef DEBUG_ENABLED
} else {
parser - > push_warning ( p_for - > datatype_specifier , GDScriptWarning : : REDUNDANT_FOR_VARIABLE_TYPE , p_for - > variable - > name , variable_type . to_string ( ) , specified_type . to_string ( ) ) ;
# endif
}
p_for - > variable - > set_datatype ( specified_type ) ;
} else {
p_for - > variable - > set_datatype ( variable_type ) ;
}
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}
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resolve_suite ( p_for - > loop ) ;
p_for - > set_datatype ( p_for - > loop - > get_datatype ( ) ) ;
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# ifdef DEBUG_ENABLED
if ( p_for - > variable ) {
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is_shadowing ( p_for - > variable , R " ( " for " iterator variable) " , true ) ;
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}
# endif
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}
void GDScriptAnalyzer : : resolve_while ( GDScriptParser : : WhileNode * p_while ) {
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resolve_node ( p_while - > condition , false ) ;
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resolve_suite ( p_while - > loop ) ;
p_while - > set_datatype ( p_while - > loop - > get_datatype ( ) ) ;
}
void GDScriptAnalyzer : : resolve_assert ( GDScriptParser : : AssertNode * p_assert ) {
reduce_expression ( p_assert - > condition ) ;
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if ( p_assert - > message ! = nullptr ) {
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reduce_expression ( p_assert - > message ) ;
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if ( ! p_assert - > message - > get_datatype ( ) . has_no_type ( ) & & ( p_assert - > message - > get_datatype ( ) . kind ! = GDScriptParser : : DataType : : BUILTIN | | p_assert - > message - > get_datatype ( ) . builtin_type ! = Variant : : STRING ) ) {
push_error ( R " (Expected string for assert error message.) " , p_assert - > message ) ;
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}
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}
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p_assert - > set_datatype ( p_assert - > condition - > get_datatype ( ) ) ;
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# ifdef DEBUG_ENABLED
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if ( p_assert - > condition - > is_constant ) {
if ( p_assert - > condition - > reduced_value . booleanize ( ) ) {
parser - > push_warning ( p_assert - > condition , GDScriptWarning : : ASSERT_ALWAYS_TRUE ) ;
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} else if ( ! ( p_assert - > condition - > type = = GDScriptParser : : Node : : LITERAL & & static_cast < GDScriptParser : : LiteralNode * > ( p_assert - > condition ) - > value . get_type ( ) = = Variant : : BOOL ) ) {
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parser - > push_warning ( p_assert - > condition , GDScriptWarning : : ASSERT_ALWAYS_FALSE ) ;
}
}
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# endif
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}
void GDScriptAnalyzer : : resolve_match ( GDScriptParser : : MatchNode * p_match ) {
reduce_expression ( p_match - > test ) ;
for ( int i = 0 ; i < p_match - > branches . size ( ) ; i + + ) {
resolve_match_branch ( p_match - > branches [ i ] , p_match - > test ) ;
decide_suite_type ( p_match , p_match - > branches [ i ] ) ;
}
}
void GDScriptAnalyzer : : resolve_match_branch ( GDScriptParser : : MatchBranchNode * p_match_branch , GDScriptParser : : ExpressionNode * p_match_test ) {
for ( int i = 0 ; i < p_match_branch - > patterns . size ( ) ; i + + ) {
resolve_match_pattern ( p_match_branch - > patterns [ i ] , p_match_test ) ;
}
resolve_suite ( p_match_branch - > block ) ;
decide_suite_type ( p_match_branch , p_match_branch - > block ) ;
}
void GDScriptAnalyzer : : resolve_match_pattern ( GDScriptParser : : PatternNode * p_match_pattern , GDScriptParser : : ExpressionNode * p_match_test ) {
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if ( p_match_pattern = = nullptr ) {
return ;
}
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GDScriptParser : : DataType result ;
switch ( p_match_pattern - > pattern_type ) {
case GDScriptParser : : PatternNode : : PT_LITERAL :
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if ( p_match_pattern - > literal ) {
reduce_literal ( p_match_pattern - > literal ) ;
result = p_match_pattern - > literal - > get_datatype ( ) ;
}
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break ;
case GDScriptParser : : PatternNode : : PT_EXPRESSION :
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if ( p_match_pattern - > expression ) {
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GDScriptParser : : ExpressionNode * expr = p_match_pattern - > expression ;
reduce_expression ( expr ) ;
result = expr - > get_datatype ( ) ;
if ( ! expr - > is_constant ) {
while ( expr & & expr - > type = = GDScriptParser : : Node : : SUBSCRIPT ) {
GDScriptParser : : SubscriptNode * sub = static_cast < GDScriptParser : : SubscriptNode * > ( expr ) ;
if ( ! sub - > is_attribute ) {
expr = nullptr ;
} else {
expr = sub - > base ;
}
}
if ( ! expr | | expr - > type ! = GDScriptParser : : Node : : IDENTIFIER ) {
push_error ( R " (Expression in match pattern must be a constant expression, an identifier, or an attribute access ( " A . B " ).) " , expr ) ;
}
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}
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}
break ;
case GDScriptParser : : PatternNode : : PT_BIND :
if ( p_match_test ! = nullptr ) {
result = p_match_test - > get_datatype ( ) ;
} else {
result . kind = GDScriptParser : : DataType : : VARIANT ;
}
p_match_pattern - > bind - > set_datatype ( result ) ;
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# ifdef DEBUG_ENABLED
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is_shadowing ( p_match_pattern - > bind , " pattern bind " , true ) ;
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if ( p_match_pattern - > bind - > usages = = 0 & & ! String ( p_match_pattern - > bind - > name ) . begins_with ( " _ " ) ) {
parser - > push_warning ( p_match_pattern - > bind , GDScriptWarning : : UNUSED_VARIABLE , p_match_pattern - > bind - > name ) ;
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}
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# endif
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break ;
case GDScriptParser : : PatternNode : : PT_ARRAY :
for ( int i = 0 ; i < p_match_pattern - > array . size ( ) ; i + + ) {
resolve_match_pattern ( p_match_pattern - > array [ i ] , nullptr ) ;
decide_suite_type ( p_match_pattern , p_match_pattern - > array [ i ] ) ;
}
result = p_match_pattern - > get_datatype ( ) ;
break ;
case GDScriptParser : : PatternNode : : PT_DICTIONARY :
for ( int i = 0 ; i < p_match_pattern - > dictionary . size ( ) ; i + + ) {
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if ( p_match_pattern - > dictionary [ i ] . key ) {
reduce_expression ( p_match_pattern - > dictionary [ i ] . key ) ;
if ( ! p_match_pattern - > dictionary [ i ] . key - > is_constant ) {
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push_error ( R " (Expression in dictionary pattern key must be a constant.) " , p_match_pattern - > dictionary [ i ] . key ) ;
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}
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}
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if ( p_match_pattern - > dictionary [ i ] . value_pattern ) {
resolve_match_pattern ( p_match_pattern - > dictionary [ i ] . value_pattern , nullptr ) ;
decide_suite_type ( p_match_pattern , p_match_pattern - > dictionary [ i ] . value_pattern ) ;
}
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}
result = p_match_pattern - > get_datatype ( ) ;
break ;
case GDScriptParser : : PatternNode : : PT_WILDCARD :
case GDScriptParser : : PatternNode : : PT_REST :
result . kind = GDScriptParser : : DataType : : VARIANT ;
break ;
}
p_match_pattern - > set_datatype ( result ) ;
}
void GDScriptAnalyzer : : resolve_return ( GDScriptParser : : ReturnNode * p_return ) {
GDScriptParser : : DataType result ;
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GDScriptParser : : DataType expected_type ;
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bool has_expected_type = parser - > current_function ! = nullptr ;
if ( has_expected_type ) {
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expected_type = parser - > current_function - > get_datatype ( ) ;
}
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if ( p_return - > return_value ! = nullptr ) {
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bool is_void_function = has_expected_type & & expected_type . is_hard_type ( ) & & expected_type . kind = = GDScriptParser : : DataType : : BUILTIN & & expected_type . builtin_type = = Variant : : NIL ;
bool is_call = p_return - > return_value - > type = = GDScriptParser : : Node : : CALL ;
if ( is_void_function & & is_call ) {
// Pretend the call is a root expression to allow those that are "void".
reduce_call ( static_cast < GDScriptParser : : CallNode * > ( p_return - > return_value ) , false , true ) ;
} else {
reduce_expression ( p_return - > return_value ) ;
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}
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if ( is_void_function ) {
p_return - > void_return = true ;
const GDScriptParser : : DataType & return_type = p_return - > return_value - > datatype ;
if ( is_call & & ! return_type . is_hard_type ( ) ) {
String function_name = parser - > current_function - > identifier ? parser - > current_function - > identifier - > name . operator String ( ) : String ( " <anonymous function> " ) ;
String called_function_name = static_cast < GDScriptParser : : CallNode * > ( p_return - > return_value ) - > function_name . operator String ( ) ;
# ifdef DEBUG_ENABLED
parser - > push_warning ( p_return , GDScriptWarning : : UNSAFE_VOID_RETURN , function_name , called_function_name ) ;
# endif
mark_node_unsafe ( p_return ) ;
} else if ( ! is_call ) {
push_error ( " A void function cannot return a value. " , p_return ) ;
}
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : NIL ;
result . is_constant = true ;
} else {
if ( p_return - > return_value - > type = = GDScriptParser : : Node : : ARRAY & & has_expected_type & & expected_type . has_container_element_type ( ) ) {
update_array_literal_element_type ( static_cast < GDScriptParser : : ArrayNode * > ( p_return - > return_value ) , expected_type . get_container_element_type ( ) ) ;
}
if ( has_expected_type & & expected_type . is_hard_type ( ) & & p_return - > return_value - > is_constant ) {
update_const_expression_builtin_type ( p_return - > return_value , expected_type , " return " ) ;
}
result = p_return - > return_value - > get_datatype ( ) ;
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}
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} else {
// Return type is null by default.
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : NIL ;
result . is_constant = true ;
}
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if ( has_expected_type & & ! expected_type . is_variant ( ) ) {
if ( result . is_variant ( ) | | ! result . is_hard_type ( ) ) {
mark_node_unsafe ( p_return ) ;
if ( ! is_type_compatible ( expected_type , result , true , p_return ) ) {
downgrade_node_type_source ( p_return ) ;
}
} else if ( ! is_type_compatible ( expected_type , result , true , p_return ) ) {
mark_node_unsafe ( p_return ) ;
if ( ! is_type_compatible ( result , expected_type ) ) {
push_error ( vformat ( R " (Cannot return value of type " % s " because the function return type is " % s " .) " , result . to_string ( ) , expected_type . to_string ( ) ) , p_return ) ;
}
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# ifdef DEBUG_ENABLED
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} else if ( expected_type . builtin_type = = Variant : : INT & & result . builtin_type = = Variant : : FLOAT ) {
parser - > push_warning ( p_return , GDScriptWarning : : NARROWING_CONVERSION ) ;
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# endif
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}
}
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p_return - > set_datatype ( result ) ;
}
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void GDScriptAnalyzer : : reduce_expression ( GDScriptParser : : ExpressionNode * p_expression , bool p_is_root ) {
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// This one makes some magic happen.
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if ( p_expression = = nullptr ) {
return ;
}
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if ( p_expression - > reduced ) {
// Don't do this more than once.
return ;
}
p_expression - > reduced = true ;
switch ( p_expression - > type ) {
case GDScriptParser : : Node : : ARRAY :
reduce_array ( static_cast < GDScriptParser : : ArrayNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : ASSIGNMENT :
reduce_assignment ( static_cast < GDScriptParser : : AssignmentNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : AWAIT :
reduce_await ( static_cast < GDScriptParser : : AwaitNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : BINARY_OPERATOR :
reduce_binary_op ( static_cast < GDScriptParser : : BinaryOpNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : CALL :
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reduce_call ( static_cast < GDScriptParser : : CallNode * > ( p_expression ) , false , p_is_root ) ;
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break ;
case GDScriptParser : : Node : : CAST :
reduce_cast ( static_cast < GDScriptParser : : CastNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : DICTIONARY :
reduce_dictionary ( static_cast < GDScriptParser : : DictionaryNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : GET_NODE :
reduce_get_node ( static_cast < GDScriptParser : : GetNodeNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : IDENTIFIER :
reduce_identifier ( static_cast < GDScriptParser : : IdentifierNode * > ( p_expression ) ) ;
break ;
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case GDScriptParser : : Node : : LAMBDA :
reduce_lambda ( static_cast < GDScriptParser : : LambdaNode * > ( p_expression ) ) ;
break ;
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case GDScriptParser : : Node : : LITERAL :
reduce_literal ( static_cast < GDScriptParser : : LiteralNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : PRELOAD :
reduce_preload ( static_cast < GDScriptParser : : PreloadNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : SELF :
reduce_self ( static_cast < GDScriptParser : : SelfNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : SUBSCRIPT :
reduce_subscript ( static_cast < GDScriptParser : : SubscriptNode * > ( p_expression ) ) ;
break ;
case GDScriptParser : : Node : : TERNARY_OPERATOR :
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reduce_ternary_op ( static_cast < GDScriptParser : : TernaryOpNode * > ( p_expression ) , p_is_root ) ;
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break ;
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case GDScriptParser : : Node : : TYPE_TEST :
reduce_type_test ( static_cast < GDScriptParser : : TypeTestNode * > ( p_expression ) ) ;
break ;
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case GDScriptParser : : Node : : UNARY_OPERATOR :
reduce_unary_op ( static_cast < GDScriptParser : : UnaryOpNode * > ( p_expression ) ) ;
break ;
// Non-expressions. Here only to make sure new nodes aren't forgotten.
case GDScriptParser : : Node : : NONE :
case GDScriptParser : : Node : : ANNOTATION :
case GDScriptParser : : Node : : ASSERT :
case GDScriptParser : : Node : : BREAK :
case GDScriptParser : : Node : : BREAKPOINT :
case GDScriptParser : : Node : : CLASS :
case GDScriptParser : : Node : : CONSTANT :
case GDScriptParser : : Node : : CONTINUE :
case GDScriptParser : : Node : : ENUM :
case GDScriptParser : : Node : : FOR :
case GDScriptParser : : Node : : FUNCTION :
case GDScriptParser : : Node : : IF :
case GDScriptParser : : Node : : MATCH :
case GDScriptParser : : Node : : MATCH_BRANCH :
case GDScriptParser : : Node : : PARAMETER :
case GDScriptParser : : Node : : PASS :
case GDScriptParser : : Node : : PATTERN :
case GDScriptParser : : Node : : RETURN :
case GDScriptParser : : Node : : SIGNAL :
case GDScriptParser : : Node : : SUITE :
case GDScriptParser : : Node : : TYPE :
case GDScriptParser : : Node : : VARIABLE :
case GDScriptParser : : Node : : WHILE :
ERR_FAIL_MSG ( " Reaching unreachable case " ) ;
}
}
void GDScriptAnalyzer : : reduce_array ( GDScriptParser : : ArrayNode * p_array ) {
for ( int i = 0 ; i < p_array - > elements . size ( ) ; i + + ) {
GDScriptParser : : ExpressionNode * element = p_array - > elements [ i ] ;
reduce_expression ( element ) ;
}
// It's array in any case.
GDScriptParser : : DataType arr_type ;
arr_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
arr_type . kind = GDScriptParser : : DataType : : BUILTIN ;
arr_type . builtin_type = Variant : : ARRAY ;
arr_type . is_constant = true ;
p_array - > set_datatype ( arr_type ) ;
}
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# ifdef DEBUG_ENABLED
static bool enum_has_value ( const GDScriptParser : : DataType p_type , int64_t p_value ) {
for ( const KeyValue < StringName , int64_t > & E : p_type . enum_values ) {
if ( E . value = = p_value ) {
return true ;
}
}
return false ;
}
# endif
void GDScriptAnalyzer : : update_const_expression_builtin_type ( GDScriptParser : : ExpressionNode * p_expression , const GDScriptParser : : DataType & p_type , const char * p_usage , bool p_is_cast ) {
if ( p_expression - > get_datatype ( ) = = p_type ) {
return ;
}
if ( p_type . kind ! = GDScriptParser : : DataType : : BUILTIN & & p_type . kind ! = GDScriptParser : : DataType : : ENUM ) {
return ;
}
GDScriptParser : : DataType expression_type = p_expression - > get_datatype ( ) ;
bool is_enum_cast = p_is_cast & & p_type . kind = = GDScriptParser : : DataType : : ENUM & & p_type . is_meta_type = = false & & expression_type . builtin_type = = Variant : : INT ;
if ( ! is_enum_cast & & ! is_type_compatible ( p_type , expression_type , true , p_expression ) ) {
push_error ( vformat ( R " (Cannot %s a value of type " % s " as " % s " .) " , p_usage , expression_type . to_string ( ) , p_type . to_string ( ) ) , p_expression ) ;
return ;
}
GDScriptParser : : DataType value_type = type_from_variant ( p_expression - > reduced_value , p_expression ) ;
if ( expression_type . is_variant ( ) & & ! is_enum_cast & & ! is_type_compatible ( p_type , value_type , true , p_expression ) ) {
push_error ( vformat ( R " (Cannot %s a value of type " % s " as " % s " .) " , p_usage , value_type . to_string ( ) , p_type . to_string ( ) ) , p_expression ) ;
return ;
}
# ifdef DEBUG_ENABLED
if ( p_type . kind = = GDScriptParser : : DataType : : ENUM & & value_type . builtin_type = = Variant : : INT & & ! enum_has_value ( p_type , p_expression - > reduced_value ) ) {
parser - > push_warning ( p_expression , GDScriptWarning : : INT_AS_ENUM_WITHOUT_MATCH , p_usage , p_expression - > reduced_value . stringify ( ) , p_type . to_string ( ) ) ;
}
# endif
if ( value_type . builtin_type = = p_type . builtin_type ) {
p_expression - > set_datatype ( p_type ) ;
return ;
}
Variant converted_to ;
const Variant * converted_from = & p_expression - > reduced_value ;
Callable : : CallError call_error ;
Variant : : construct ( p_type . builtin_type , converted_to , & converted_from , 1 , call_error ) ;
if ( call_error . error ) {
push_error ( vformat ( R " (Failed to convert a value of type " % s " to " % s " .) " , value_type . to_string ( ) , p_type . to_string ( ) ) , p_expression ) ;
return ;
}
# ifdef DEBUG_ENABLED
if ( p_type . builtin_type = = Variant : : INT & & value_type . builtin_type = = Variant : : FLOAT ) {
parser - > push_warning ( p_expression , GDScriptWarning : : NARROWING_CONVERSION ) ;
}
# endif
p_expression - > reduced_value = converted_to ;
p_expression - > set_datatype ( p_type ) ;
}
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// When an array literal is stored (or passed as function argument) to a typed context, we then assume the array is typed.
// This function determines which type is that (if any).
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void GDScriptAnalyzer : : update_array_literal_element_type ( GDScriptParser : : ArrayNode * p_array , const GDScriptParser : : DataType & p_element_type ) {
for ( int i = 0 ; i < p_array - > elements . size ( ) ; i + + ) {
GDScriptParser : : ExpressionNode * element_node = p_array - > elements [ i ] ;
if ( element_node - > is_constant ) {
update_const_expression_builtin_type ( element_node , p_element_type , " include " ) ;
}
const GDScriptParser : : DataType & element_type = element_node - > get_datatype ( ) ;
if ( element_type . has_no_type ( ) | | element_type . is_variant ( ) | | ! element_type . is_hard_type ( ) ) {
mark_node_unsafe ( element_node ) ;
continue ;
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}
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if ( ! is_type_compatible ( p_element_type , element_type , true , p_array ) ) {
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if ( is_type_compatible ( element_type , p_element_type ) ) {
mark_node_unsafe ( element_node ) ;
continue ;
}
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push_error ( vformat ( R " (Cannot have an element of type " % s " in an array of type " Array [ % s ] " .) " , element_type . to_string ( ) , p_element_type . to_string ( ) ) , element_node ) ;
return ;
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}
}
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GDScriptParser : : DataType array_type = p_array - > get_datatype ( ) ;
array_type . set_container_element_type ( p_element_type ) ;
p_array - > set_datatype ( array_type ) ;
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}
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void GDScriptAnalyzer : : reduce_assignment ( GDScriptParser : : AssignmentNode * p_assignment ) {
reduce_expression ( p_assignment - > assignee ) ;
reduce_expression ( p_assignment - > assigned_value ) ;
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if ( p_assignment - > assigned_value = = nullptr | | p_assignment - > assignee = = nullptr ) {
return ;
}
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GDScriptParser : : DataType assignee_type = p_assignment - > assignee - > get_datatype ( ) ;
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if ( assignee_type . is_constant ) {
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push_error ( " Cannot assign a new value to a constant. " , p_assignment - > assignee ) ;
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return ;
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} else if ( p_assignment - > assignee - > type = = GDScriptParser : : Node : : SUBSCRIPT & & static_cast < GDScriptParser : : SubscriptNode * > ( p_assignment - > assignee ) - > base - > is_constant ) {
const GDScriptParser : : DataType & base_type = static_cast < GDScriptParser : : SubscriptNode * > ( p_assignment - > assignee ) - > base - > datatype ;
if ( base_type . kind ! = GDScriptParser : : DataType : : SCRIPT & & base_type . kind ! = GDScriptParser : : DataType : : CLASS ) { // Static variables.
push_error ( " Cannot assign a new value to a constant. " , p_assignment - > assignee ) ;
return ;
}
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} else if ( assignee_type . is_read_only ) {
push_error ( " Cannot assign a new value to a read-only property. " , p_assignment - > assignee ) ;
return ;
} else if ( p_assignment - > assignee - > type = = GDScriptParser : : Node : : SUBSCRIPT ) {
GDScriptParser : : SubscriptNode * sub = static_cast < GDScriptParser : : SubscriptNode * > ( p_assignment - > assignee ) ;
while ( sub ) {
const GDScriptParser : : DataType & base_type = sub - > base - > datatype ;
if ( base_type . is_hard_type ( ) & & base_type . is_read_only ) {
if ( base_type . kind = = GDScriptParser : : DataType : : BUILTIN & & ! Variant : : is_type_shared ( base_type . builtin_type ) ) {
push_error ( " Cannot assign a new value to a read-only property. " , p_assignment - > assignee ) ;
return ;
}
} else {
break ;
}
if ( sub - > base - > type = = GDScriptParser : : Node : : SUBSCRIPT ) {
sub = static_cast < GDScriptParser : : SubscriptNode * > ( sub - > base ) ;
} else {
sub = nullptr ;
}
}
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}
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// Check if assigned value is an array literal, so we can make it a typed array too if appropriate.
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if ( p_assignment - > assigned_value - > type = = GDScriptParser : : Node : : ARRAY & & assignee_type . has_container_element_type ( ) ) {
update_array_literal_element_type ( static_cast < GDScriptParser : : ArrayNode * > ( p_assignment - > assigned_value ) , assignee_type . get_container_element_type ( ) ) ;
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}
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if ( p_assignment - > operation = = GDScriptParser : : AssignmentNode : : OP_NONE & & assignee_type . is_hard_type ( ) & & p_assignment - > assigned_value - > is_constant ) {
update_const_expression_builtin_type ( p_assignment - > assigned_value , assignee_type , " assign " ) ;
}
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GDScriptParser : : DataType assigned_value_type = p_assignment - > assigned_value - > get_datatype ( ) ;
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bool assignee_is_variant = assignee_type . is_variant ( ) ;
bool assignee_is_hard = assignee_type . is_hard_type ( ) ;
bool assigned_is_variant = assigned_value_type . is_variant ( ) ;
bool assigned_is_hard = assigned_value_type . is_hard_type ( ) ;
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bool compatible = true ;
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bool downgrades_assignee = false ;
bool downgrades_assigned = false ;
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GDScriptParser : : DataType op_type = assigned_value_type ;
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if ( p_assignment - > operation ! = GDScriptParser : : AssignmentNode : : OP_NONE & & ! op_type . is_variant ( ) ) {
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op_type = get_operation_type ( p_assignment - > variant_op , assignee_type , assigned_value_type , compatible , p_assignment - > assigned_value ) ;
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if ( assignee_is_variant ) {
// variant assignee
mark_node_unsafe ( p_assignment ) ;
} else if ( ! compatible ) {
// incompatible hard types and non-variant assignee
mark_node_unsafe ( p_assignment ) ;
if ( assigned_is_variant ) {
// incompatible hard non-variant assignee and hard variant assigned
p_assignment - > use_conversion_assign = true ;
} else {
// incompatible hard non-variant types
push_error ( vformat ( R " (Invalid operands " % s " and " % s " for assignment operator.) " , assignee_type . to_string ( ) , assigned_value_type . to_string ( ) ) , p_assignment ) ;
}
} else if ( op_type . type_source = = GDScriptParser : : DataType : : UNDETECTED & & ! assigned_is_variant ) {
// incompatible non-variant types (at least one weak)
downgrades_assignee = ! assignee_is_hard ;
downgrades_assigned = ! assigned_is_hard ;
}
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}
p_assignment - > set_datatype ( op_type ) ;
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if ( assignee_is_variant ) {
if ( ! assignee_is_hard ) {
// weak variant assignee
mark_node_unsafe ( p_assignment ) ;
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}
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} else {
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if ( assignee_is_hard & & ! assigned_is_hard ) {
// hard non-variant assignee and weak assigned
mark_node_unsafe ( p_assignment ) ;
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p_assignment - > use_conversion_assign = true ;
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downgrades_assigned = downgrades_assigned | | ( ! assigned_is_variant & & ! is_type_compatible ( assignee_type , op_type , true , p_assignment - > assigned_value ) ) ;
} else if ( compatible ) {
if ( op_type . is_variant ( ) ) {
// non-variant assignee and variant result
mark_node_unsafe ( p_assignment ) ;
if ( assignee_is_hard ) {
// hard non-variant assignee and variant result
p_assignment - > use_conversion_assign = true ;
} else {
// weak non-variant assignee and variant result
downgrades_assignee = true ;
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}
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} else if ( ! is_type_compatible ( assignee_type , op_type , assignee_is_hard , p_assignment - > assigned_value ) ) {
// non-variant assignee and incompatible result
mark_node_unsafe ( p_assignment ) ;
if ( assignee_is_hard ) {
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if ( is_type_compatible ( op_type , assignee_type ) ) {
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// hard non-variant assignee and maybe compatible result
p_assignment - > use_conversion_assign = true ;
} else {
// hard non-variant assignee and incompatible result
push_error ( vformat ( R " (Value of type " % s " cannot be assigned to a variable of type " % s " .) " , assigned_value_type . to_string ( ) , assignee_type . to_string ( ) ) , p_assignment - > assigned_value ) ;
}
} else {
// weak non-variant assignee and incompatible result
downgrades_assignee = true ;
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}
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} else if ( assignee_type . has_container_element_type ( ) & & ! op_type . has_container_element_type ( ) ) {
// typed array assignee and untyped array result
mark_node_unsafe ( p_assignment ) ;
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}
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}
}
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if ( downgrades_assignee ) {
downgrade_node_type_source ( p_assignment - > assignee ) ;
}
if ( downgrades_assigned ) {
downgrade_node_type_source ( p_assignment - > assigned_value ) ;
}
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# ifdef DEBUG_ENABLED
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if ( assignee_type . is_hard_type ( ) & & assignee_type . builtin_type = = Variant : : INT & & assigned_value_type . builtin_type = = Variant : : FLOAT ) {
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parser - > push_warning ( p_assignment - > assigned_value , GDScriptWarning : : NARROWING_CONVERSION ) ;
}
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# endif
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}
void GDScriptAnalyzer : : reduce_await ( GDScriptParser : : AwaitNode * p_await ) {
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if ( p_await - > to_await = = nullptr ) {
GDScriptParser : : DataType await_type ;
await_type . kind = GDScriptParser : : DataType : : VARIANT ;
p_await - > set_datatype ( await_type ) ;
return ;
}
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if ( p_await - > to_await - > type = = GDScriptParser : : Node : : CALL ) {
reduce_call ( static_cast < GDScriptParser : : CallNode * > ( p_await - > to_await ) , true ) ;
} else {
reduce_expression ( p_await - > to_await ) ;
}
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GDScriptParser : : DataType await_type = p_await - > to_await - > get_datatype ( ) ;
// We cannot infer the type of the result of waiting for a signal.
if ( await_type . is_hard_type ( ) & & await_type . kind = = GDScriptParser : : DataType : : BUILTIN & & await_type . builtin_type = = Variant : : SIGNAL ) {
await_type . kind = GDScriptParser : : DataType : : VARIANT ;
await_type . type_source = GDScriptParser : : DataType : : UNDETECTED ;
} else if ( p_await - > to_await - > is_constant ) {
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p_await - > is_constant = p_await - > to_await - > is_constant ;
p_await - > reduced_value = p_await - > to_await - > reduced_value ;
}
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await_type . is_coroutine = false ;
p_await - > set_datatype ( await_type ) ;
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# ifdef DEBUG_ENABLED
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GDScriptParser : : DataType to_await_type = p_await - > to_await - > get_datatype ( ) ;
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if ( ! to_await_type . is_coroutine & & ! to_await_type . is_variant ( ) & & to_await_type . builtin_type ! = Variant : : SIGNAL ) {
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parser - > push_warning ( p_await , GDScriptWarning : : REDUNDANT_AWAIT ) ;
}
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# endif
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}
void GDScriptAnalyzer : : reduce_binary_op ( GDScriptParser : : BinaryOpNode * p_binary_op ) {
reduce_expression ( p_binary_op - > left_operand ) ;
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reduce_expression ( p_binary_op - > right_operand ) ;
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GDScriptParser : : DataType left_type ;
if ( p_binary_op - > left_operand ) {
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left_type = p_binary_op - > left_operand - > get_datatype ( ) ;
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}
GDScriptParser : : DataType right_type ;
if ( p_binary_op - > right_operand ) {
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right_type = p_binary_op - > right_operand - > get_datatype ( ) ;
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}
if ( ! left_type . is_set ( ) | | ! right_type . is_set ( ) ) {
return ;
}
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# ifdef DEBUG_ENABLED
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if ( p_binary_op - > variant_op = = Variant : : OP_DIVIDE & & left_type . builtin_type = = Variant : : INT & & right_type . builtin_type = = Variant : : INT ) {
parser - > push_warning ( p_binary_op , GDScriptWarning : : INTEGER_DIVISION ) ;
}
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# endif
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if ( p_binary_op - > left_operand - > is_constant & & p_binary_op - > right_operand - > is_constant ) {
p_binary_op - > is_constant = true ;
if ( p_binary_op - > variant_op < Variant : : OP_MAX ) {
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bool valid = false ;
Variant : : evaluate ( p_binary_op - > variant_op , p_binary_op - > left_operand - > reduced_value , p_binary_op - > right_operand - > reduced_value , p_binary_op - > reduced_value , valid ) ;
if ( ! valid ) {
if ( p_binary_op - > reduced_value . get_type ( ) = = Variant : : STRING ) {
push_error ( vformat ( R " (%s in operator %s.) " , p_binary_op - > reduced_value , Variant : : get_operator_name ( p_binary_op - > variant_op ) ) , p_binary_op ) ;
} else {
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push_error ( vformat ( R " (Invalid operands to operator %s, %s and %s.) " ,
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Variant : : get_operator_name ( p_binary_op - > variant_op ) ,
Variant : : get_type_name ( p_binary_op - > left_operand - > reduced_value . get_type ( ) ) ,
Variant : : get_type_name ( p_binary_op - > right_operand - > reduced_value . get_type ( ) ) ) ,
p_binary_op ) ;
}
}
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} else {
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ERR_PRINT ( " Parser bug: unknown binary operation. " ) ;
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}
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p_binary_op - > set_datatype ( type_from_variant ( p_binary_op - > reduced_value , p_binary_op ) ) ;
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return ;
}
GDScriptParser : : DataType result ;
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if ( ( p_binary_op - > variant_op = = Variant : : OP_EQUAL | | p_binary_op - > variant_op = = Variant : : OP_NOT_EQUAL ) & &
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( ( left_type . kind = = GDScriptParser : : DataType : : BUILTIN & & left_type . builtin_type = = Variant : : NIL ) | | ( right_type . kind = = GDScriptParser : : DataType : : BUILTIN & & right_type . builtin_type = = Variant : : NIL ) ) ) {
// "==" and "!=" operators always return a boolean when comparing to null.
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : BOOL ;
} else if ( left_type . is_variant ( ) | | right_type . is_variant ( ) ) {
// Cannot infer type because one operand can be anything.
result . kind = GDScriptParser : : DataType : : VARIANT ;
mark_node_unsafe ( p_binary_op ) ;
} else if ( p_binary_op - > variant_op < Variant : : OP_MAX ) {
bool valid = false ;
result = get_operation_type ( p_binary_op - > variant_op , left_type , right_type , valid , p_binary_op ) ;
if ( ! valid ) {
push_error ( vformat ( R " (Invalid operands " % s " and " % s " for " % s " operator.) " , left_type . to_string ( ) , right_type . to_string ( ) , Variant : : get_operator_name ( p_binary_op - > variant_op ) ) , p_binary_op ) ;
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} else if ( ! result . is_hard_type ( ) ) {
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mark_node_unsafe ( p_binary_op ) ;
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}
} else {
ERR_PRINT ( " Parser bug: unknown binary operation. " ) ;
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}
p_binary_op - > set_datatype ( result ) ;
}
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# ifdef SUGGEST_GODOT4_RENAMES
const char * get_rename_from_map ( const char * map [ ] [ 2 ] , String key ) {
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for ( int index = 0 ; map [ index ] [ 0 ] ; index + + ) {
if ( map [ index ] [ 0 ] = = key ) {
return map [ index ] [ 1 ] ;
}
}
return nullptr ;
}
// Checks if an identifier/function name has been renamed in Godot 4, uses ProjectConverter3To4 for rename map.
// Returns the new name if found, nullptr otherwise.
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const char * check_for_renamed_identifier ( String identifier , GDScriptParser : : Node : : Type type ) {
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switch ( type ) {
case GDScriptParser : : Node : : IDENTIFIER : {
// Check properties
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const char * result = get_rename_from_map ( RenamesMap3To4 : : gdscript_properties_renames , identifier ) ;
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if ( result ) {
return result ;
}
// Check enum values
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result = get_rename_from_map ( RenamesMap3To4 : : enum_renames , identifier ) ;
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if ( result ) {
return result ;
}
// Check color constants
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result = get_rename_from_map ( RenamesMap3To4 : : color_renames , identifier ) ;
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if ( result ) {
return result ;
}
// Check type names
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result = get_rename_from_map ( RenamesMap3To4 : : class_renames , identifier ) ;
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if ( result ) {
return result ;
}
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return get_rename_from_map ( RenamesMap3To4 : : builtin_types_renames , identifier ) ;
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}
case GDScriptParser : : Node : : CALL : {
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const char * result = get_rename_from_map ( RenamesMap3To4 : : gdscript_function_renames , identifier ) ;
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if ( result ) {
return result ;
}
// Built-in Types are mistaken for function calls when the built-in type is not found.
// Check built-in types if function rename not found
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return get_rename_from_map ( RenamesMap3To4 : : builtin_types_renames , identifier ) ;
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}
// Signal references don't get parsed through the GDScriptAnalyzer. No support for signal rename hints.
default :
// No rename found, return null
return nullptr ;
}
}
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# endif // SUGGEST_GODOT4_RENAMES
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void GDScriptAnalyzer : : reduce_call ( GDScriptParser : : CallNode * p_call , bool p_is_await , bool p_is_root ) {
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bool all_is_constant = true ;
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HashMap < int , GDScriptParser : : ArrayNode * > arrays ; // For array literal to potentially type when passing.
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for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
reduce_expression ( p_call - > arguments [ i ] ) ;
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if ( p_call - > arguments [ i ] - > type = = GDScriptParser : : Node : : ARRAY ) {
arrays [ i ] = static_cast < GDScriptParser : : ArrayNode * > ( p_call - > arguments [ i ] ) ;
}
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all_is_constant = all_is_constant & & p_call - > arguments [ i ] - > is_constant ;
}
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GDScriptParser : : Node : : Type callee_type = p_call - > get_callee_type ( ) ;
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GDScriptParser : : DataType call_type ;
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if ( ! p_call - > is_super & & callee_type = = GDScriptParser : : Node : : IDENTIFIER ) {
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// Call to name directly.
StringName function_name = p_call - > function_name ;
Variant : : Type builtin_type = GDScriptParser : : get_builtin_type ( function_name ) ;
if ( builtin_type < Variant : : VARIANT_MAX ) {
// Is a builtin constructor.
call_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
call_type . kind = GDScriptParser : : DataType : : BUILTIN ;
call_type . builtin_type = builtin_type ;
if ( builtin_type = = Variant : : OBJECT ) {
call_type . kind = GDScriptParser : : DataType : : NATIVE ;
call_type . native_type = function_name ; // "Object".
}
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bool safe_to_fold = true ;
switch ( builtin_type ) {
// Those are stored by reference so not suited for compile-time construction.
// Because in this case they would be the same reference in all constructed values.
case Variant : : OBJECT :
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case Variant : : DICTIONARY :
case Variant : : ARRAY :
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case Variant : : PACKED_BYTE_ARRAY :
case Variant : : PACKED_INT32_ARRAY :
case Variant : : PACKED_INT64_ARRAY :
case Variant : : PACKED_FLOAT32_ARRAY :
case Variant : : PACKED_FLOAT64_ARRAY :
case Variant : : PACKED_STRING_ARRAY :
case Variant : : PACKED_VECTOR2_ARRAY :
case Variant : : PACKED_VECTOR3_ARRAY :
case Variant : : PACKED_COLOR_ARRAY :
safe_to_fold = false ;
break ;
default :
break ;
}
if ( all_is_constant & & safe_to_fold ) {
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// Construct here.
Vector < const Variant * > args ;
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
args . push_back ( & ( p_call - > arguments [ i ] - > reduced_value ) ) ;
}
Callable : : CallError err ;
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Variant value ;
Variant : : construct ( builtin_type , value , ( const Variant * * ) args . ptr ( ) , args . size ( ) , err ) ;
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switch ( err . error ) {
case Callable : : CallError : : CALL_ERROR_INVALID_ARGUMENT :
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push_error ( vformat ( R " (Invalid argument for %s constructor: argument %d should be " % s " but is " % s " .) " , Variant : : get_type_name ( builtin_type ) , err . argument + 1 ,
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Variant : : get_type_name ( Variant : : Type ( err . expected ) ) , p_call - > arguments [ err . argument ] - > get_datatype ( ) . to_string ( ) ) ,
p_call - > arguments [ err . argument ] ) ;
break ;
case Callable : : CallError : : CALL_ERROR_INVALID_METHOD : {
String signature = Variant : : get_type_name ( builtin_type ) + " ( " ;
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
if ( i > 0 ) {
signature + = " , " ;
}
signature + = p_call - > arguments [ i ] - > get_datatype ( ) . to_string ( ) ;
}
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signature + = " ) " ;
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push_error ( vformat ( R " (No constructor of " % s " matches the signature " % s " .) " , Variant : : get_type_name ( builtin_type ) , signature ) , p_call - > callee ) ;
} break ;
case Callable : : CallError : : CALL_ERROR_TOO_MANY_ARGUMENTS :
push_error ( vformat ( R " (Too many arguments for %s constructor. Received %d but expected %d.) " , Variant : : get_type_name ( builtin_type ) , p_call - > arguments . size ( ) , err . expected ) , p_call ) ;
break ;
case Callable : : CallError : : CALL_ERROR_TOO_FEW_ARGUMENTS :
push_error ( vformat ( R " (Too few arguments for %s constructor. Received %d but expected %d.) " , Variant : : get_type_name ( builtin_type ) , p_call - > arguments . size ( ) , err . expected ) , p_call ) ;
break ;
case Callable : : CallError : : CALL_ERROR_INSTANCE_IS_NULL :
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case Callable : : CallError : : CALL_ERROR_METHOD_NOT_CONST :
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break ; // Can't happen in a builtin constructor.
case Callable : : CallError : : CALL_OK :
p_call - > is_constant = true ;
p_call - > reduced_value = value ;
break ;
}
} else {
// TODO: Check constructors without constants.
// If there's one argument, try to use copy constructor (those aren't explicitly defined).
if ( p_call - > arguments . size ( ) = = 1 ) {
GDScriptParser : : DataType arg_type = p_call - > arguments [ 0 ] - > get_datatype ( ) ;
if ( arg_type . is_variant ( ) ) {
mark_node_unsafe ( p_call - > arguments [ 0 ] ) ;
} else {
if ( arg_type . kind = = GDScriptParser : : DataType : : BUILTIN & & arg_type . builtin_type = = builtin_type ) {
// Okay.
p_call - > set_datatype ( call_type ) ;
return ;
}
}
}
List < MethodInfo > constructors ;
Variant : : get_constructor_list ( builtin_type , & constructors ) ;
bool match = false ;
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for ( const MethodInfo & info : constructors ) {
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if ( p_call - > arguments . size ( ) < info . arguments . size ( ) - info . default_arguments . size ( ) ) {
continue ;
}
if ( p_call - > arguments . size ( ) > info . arguments . size ( ) ) {
continue ;
}
bool types_match = true ;
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
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GDScriptParser : : DataType par_type = type_from_property ( info . arguments [ i ] , true ) ;
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if ( ! is_type_compatible ( par_type , p_call - > arguments [ i ] - > get_datatype ( ) , true ) ) {
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types_match = false ;
break ;
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# ifdef DEBUG_ENABLED
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} else {
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if ( par_type . builtin_type = = Variant : : INT & & p_call - > arguments [ i ] - > get_datatype ( ) . builtin_type = = Variant : : FLOAT & & builtin_type ! = Variant : : INT ) {
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parser - > push_warning ( p_call , GDScriptWarning : : NARROWING_CONVERSION , p_call - > function_name ) ;
}
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# endif
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}
}
if ( types_match ) {
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for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
if ( p_call - > arguments [ i ] - > is_constant ) {
update_const_expression_builtin_type ( p_call - > arguments [ i ] , type_from_property ( info . arguments [ i ] , true ) , " pass " ) ;
}
}
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match = true ;
call_type = type_from_property ( info . return_val ) ;
break ;
}
}
if ( ! match ) {
String signature = Variant : : get_type_name ( builtin_type ) + " ( " ;
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
if ( i > 0 ) {
signature + = " , " ;
}
signature + = p_call - > arguments [ i ] - > get_datatype ( ) . to_string ( ) ;
}
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signature + = " ) " ;
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push_error ( vformat ( R " (No constructor of " % s " matches the signature " % s " .) " , Variant : : get_type_name ( builtin_type ) , signature ) , p_call ) ;
}
}
p_call - > set_datatype ( call_type ) ;
return ;
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} else if ( GDScriptUtilityFunctions : : function_exists ( function_name ) ) {
MethodInfo function_info = GDScriptUtilityFunctions : : get_function_info ( function_name ) ;
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if ( ! p_is_root & & ! p_is_await & & function_info . return_val . type = = Variant : : NIL & & ( ( function_info . return_val . usage & PROPERTY_USAGE_NIL_IS_VARIANT ) = = 0 ) ) {
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push_error ( vformat ( R " *(Cannot get return value of call to " % s ( ) " because it returns " void " .)* " , function_name ) , p_call ) ;
}
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if ( all_is_constant & & GDScriptUtilityFunctions : : is_function_constant ( function_name ) ) {
// Can call on compilation.
Vector < const Variant * > args ;
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
args . push_back ( & ( p_call - > arguments [ i ] - > reduced_value ) ) ;
}
Variant value ;
Callable : : CallError err ;
GDScriptUtilityFunctions : : get_function ( function_name ) ( & value , ( const Variant * * ) args . ptr ( ) , args . size ( ) , err ) ;
switch ( err . error ) {
case Callable : : CallError : : CALL_ERROR_INVALID_ARGUMENT : {
PropertyInfo wrong_arg = function_info . arguments [ err . argument ] ;
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push_error ( vformat ( R " *(Invalid argument for " % s ( ) " function: argument %d should be " % s " but is " % s " .)* " , function_name , err . argument + 1 ,
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type_from_property ( wrong_arg , true ) . to_string ( ) , p_call - > arguments [ err . argument ] - > get_datatype ( ) . to_string ( ) ) ,
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p_call - > arguments [ err . argument ] ) ;
} break ;
case Callable : : CallError : : CALL_ERROR_INVALID_METHOD :
push_error ( vformat ( R " (Invalid call for function " % s " .) " , function_name ) , p_call ) ;
break ;
case Callable : : CallError : : CALL_ERROR_TOO_MANY_ARGUMENTS :
push_error ( vformat ( R " *(Too many arguments for " % s ( ) " call. Expected at most %d but received %d.)* " , function_name , err . expected , p_call - > arguments . size ( ) ) , p_call ) ;
break ;
case Callable : : CallError : : CALL_ERROR_TOO_FEW_ARGUMENTS :
push_error ( vformat ( R " *(Too few arguments for " % s ( ) " call. Expected at least %d but received %d.)* " , function_name , err . expected , p_call - > arguments . size ( ) ) , p_call ) ;
break ;
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case Callable : : CallError : : CALL_ERROR_METHOD_NOT_CONST :
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case Callable : : CallError : : CALL_ERROR_INSTANCE_IS_NULL :
break ; // Can't happen in a builtin constructor.
case Callable : : CallError : : CALL_OK :
p_call - > is_constant = true ;
p_call - > reduced_value = value ;
break ;
}
} else {
validate_call_arg ( function_info , p_call ) ;
}
p_call - > set_datatype ( type_from_property ( function_info . return_val ) ) ;
return ;
} else if ( Variant : : has_utility_function ( function_name ) ) {
MethodInfo function_info = info_from_utility_func ( function_name ) ;
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if ( ! p_is_root & & ! p_is_await & & function_info . return_val . type = = Variant : : NIL & & ( ( function_info . return_val . usage & PROPERTY_USAGE_NIL_IS_VARIANT ) = = 0 ) ) {
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push_error ( vformat ( R " *(Cannot get return value of call to " % s ( ) " because it returns " void " .)* " , function_name ) , p_call ) ;
}
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if ( all_is_constant & & Variant : : get_utility_function_type ( function_name ) = = Variant : : UTILITY_FUNC_TYPE_MATH ) {
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// Can call on compilation.
Vector < const Variant * > args ;
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
args . push_back ( & ( p_call - > arguments [ i ] - > reduced_value ) ) ;
}
Variant value ;
Callable : : CallError err ;
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Variant : : call_utility_function ( function_name , & value , ( const Variant * * ) args . ptr ( ) , args . size ( ) , err ) ;
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switch ( err . error ) {
case Callable : : CallError : : CALL_ERROR_INVALID_ARGUMENT : {
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String expected_type_name ;
if ( err . argument < function_info . arguments . size ( ) ) {
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expected_type_name = type_from_property ( function_info . arguments [ err . argument ] , true ) . to_string ( ) ;
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} else {
expected_type_name = Variant : : get_type_name ( ( Variant : : Type ) err . expected ) ;
}
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push_error ( vformat ( R " *(Invalid argument for " % s ( ) " function: argument %d should be " % s " but is " % s " .)* " , function_name , err . argument + 1 ,
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expected_type_name , p_call - > arguments [ err . argument ] - > get_datatype ( ) . to_string ( ) ) ,
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p_call - > arguments [ err . argument ] ) ;
} break ;
case Callable : : CallError : : CALL_ERROR_INVALID_METHOD :
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push_error ( vformat ( R " (Invalid call for function " % s " .) " , function_name ) , p_call ) ;
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break ;
case Callable : : CallError : : CALL_ERROR_TOO_MANY_ARGUMENTS :
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push_error ( vformat ( R " *(Too many arguments for " % s ( ) " call. Expected at most %d but received %d.)* " , function_name , err . expected , p_call - > arguments . size ( ) ) , p_call ) ;
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break ;
case Callable : : CallError : : CALL_ERROR_TOO_FEW_ARGUMENTS :
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push_error ( vformat ( R " *(Too few arguments for " % s ( ) " call. Expected at least %d but received %d.)* " , function_name , err . expected , p_call - > arguments . size ( ) ) , p_call ) ;
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break ;
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case Callable : : CallError : : CALL_ERROR_METHOD_NOT_CONST :
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case Callable : : CallError : : CALL_ERROR_INSTANCE_IS_NULL :
break ; // Can't happen in a builtin constructor.
case Callable : : CallError : : CALL_OK :
p_call - > is_constant = true ;
p_call - > reduced_value = value ;
break ;
}
} else {
validate_call_arg ( function_info , p_call ) ;
}
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p_call - > set_datatype ( type_from_property ( function_info . return_val ) ) ;
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return ;
}
}
GDScriptParser : : DataType base_type ;
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call_type . kind = GDScriptParser : : DataType : : VARIANT ;
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bool is_self = false ;
if ( p_call - > is_super ) {
base_type = parser - > current_class - > base_type ;
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base_type . is_meta_type = false ;
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is_self = true ;
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if ( p_call - > callee = = nullptr & & current_lambda ! = nullptr ) {
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push_error ( " Cannot use `super()` inside a lambda. " , p_call ) ;
}
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} else if ( callee_type = = GDScriptParser : : Node : : IDENTIFIER ) {
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base_type = parser - > current_class - > get_datatype ( ) ;
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base_type . is_meta_type = false ;
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is_self = true ;
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} else if ( callee_type = = GDScriptParser : : Node : : SUBSCRIPT ) {
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GDScriptParser : : SubscriptNode * subscript = static_cast < GDScriptParser : : SubscriptNode * > ( p_call - > callee ) ;
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if ( subscript - > base = = nullptr ) {
// Invalid syntax, error already set on parser.
p_call - > set_datatype ( call_type ) ;
mark_node_unsafe ( p_call ) ;
return ;
}
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if ( ! subscript - > is_attribute ) {
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// Invalid call. Error already sent in parser.
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// TODO: Could check if Callable here.
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p_call - > set_datatype ( call_type ) ;
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mark_node_unsafe ( p_call ) ;
return ;
}
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if ( subscript - > attribute = = nullptr ) {
// Invalid call. Error already sent in parser.
p_call - > set_datatype ( call_type ) ;
mark_node_unsafe ( p_call ) ;
return ;
}
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GDScriptParser : : IdentifierNode * base_id = nullptr ;
if ( subscript - > base - > type = = GDScriptParser : : Node : : IDENTIFIER ) {
base_id = static_cast < GDScriptParser : : IdentifierNode * > ( subscript - > base ) ;
}
if ( base_id & & GDScriptParser : : get_builtin_type ( base_id - > name ) < Variant : : VARIANT_MAX ) {
base_type = make_builtin_meta_type ( GDScriptParser : : get_builtin_type ( base_id - > name ) ) ;
} else {
reduce_expression ( subscript - > base ) ;
base_type = subscript - > base - > get_datatype ( ) ;
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is_self = subscript - > base - > type = = GDScriptParser : : Node : : SELF ;
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}
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} else {
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// Invalid call. Error already sent in parser.
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// TODO: Could check if Callable here too.
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p_call - > set_datatype ( call_type ) ;
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mark_node_unsafe ( p_call ) ;
return ;
}
int default_arg_count = 0 ;
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BitField < MethodFlags > method_flags ;
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GDScriptParser : : DataType return_type ;
List < GDScriptParser : : DataType > par_types ;
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bool is_constructor = ( base_type . is_meta_type | | ( p_call - > callee & & p_call - > callee - > type = = GDScriptParser : : Node : : IDENTIFIER ) ) & & p_call - > function_name = = SNAME ( " new " ) ;
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if ( get_function_signature ( p_call , is_constructor , base_type , p_call - > function_name , return_type , par_types , default_arg_count , method_flags ) ) {
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// If the function require typed arrays we must make literals be typed.
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for ( const KeyValue < int , GDScriptParser : : ArrayNode * > & E : arrays ) {
int index = E . key ;
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if ( index < par_types . size ( ) & & par_types [ index ] . has_container_element_type ( ) ) {
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update_array_literal_element_type ( E . value , par_types [ index ] . get_container_element_type ( ) ) ;
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}
}
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validate_call_arg ( par_types , default_arg_count , method_flags . has_flag ( METHOD_FLAG_VARARG ) , p_call ) ;
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if ( base_type . kind = = GDScriptParser : : DataType : : ENUM & & base_type . is_meta_type ) {
// Enum type is treated as a dictionary value for function calls.
base_type . is_meta_type = false ;
}
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if ( is_self & & static_context & & ! method_flags . has_flag ( METHOD_FLAG_STATIC ) ) {
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if ( parser - > current_function ) {
// Get the parent function above any lambda.
GDScriptParser : : FunctionNode * parent_function = parser - > current_function ;
while ( parent_function - > source_lambda ) {
parent_function = parent_function - > source_lambda - > parent_function ;
}
push_error ( vformat ( R " *(Cannot call non-static function " % s ( ) " from static function " % s ( ) " .)* " , p_call - > function_name , parent_function - > identifier - > name ) , p_call ) ;
} else {
push_error ( vformat ( R " *(Cannot call non-static function " % s ( ) " for static variable initializer.)* " , p_call - > function_name ) , p_call ) ;
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}
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} else if ( ! is_self & & base_type . is_meta_type & & ! method_flags . has_flag ( METHOD_FLAG_STATIC ) ) {
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base_type . is_meta_type = false ; // For `to_string()`.
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push_error ( vformat ( R " *(Cannot call non-static function " % s ( ) " on the class " % s " directly. Make an instance instead.)* " , p_call - > function_name , base_type . to_string ( ) ) , p_call ) ;
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} else if ( is_self & & ! method_flags . has_flag ( METHOD_FLAG_STATIC ) ) {
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mark_lambda_use_self ( ) ;
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}
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if ( ! p_is_root & & ! p_is_await & & return_type . is_hard_type ( ) & & return_type . kind = = GDScriptParser : : DataType : : BUILTIN & & return_type . builtin_type = = Variant : : NIL ) {
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push_error ( vformat ( R " *(Cannot get return value of call to " % s ( ) " because it returns " void " .)* " , p_call - > function_name ) , p_call ) ;
}
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# ifdef DEBUG_ENABLED
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if ( p_is_root & & return_type . kind ! = GDScriptParser : : DataType : : UNRESOLVED & & return_type . builtin_type ! = Variant : : NIL & &
! ( p_call - > is_super & & p_call - > function_name = = GDScriptLanguage : : get_singleton ( ) - > strings . _init ) ) {
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parser - > push_warning ( p_call , GDScriptWarning : : RETURN_VALUE_DISCARDED , p_call - > function_name ) ;
}
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if ( method_flags . has_flag ( METHOD_FLAG_STATIC ) & & ! is_constructor & & ! base_type . is_meta_type & & ! ( is_self & & static_context ) ) {
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String caller_type = String ( base_type . native_type ) ;
if ( caller_type . is_empty ( ) ) {
caller_type = base_type . to_string ( ) ;
}
parser - > push_warning ( p_call , GDScriptWarning : : STATIC_CALLED_ON_INSTANCE , p_call - > function_name , caller_type ) ;
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}
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# endif // DEBUG_ENABLED
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call_type = return_type ;
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} else {
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bool found = false ;
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// Enums do not have functions other than the built-in dictionary ones.
if ( base_type . kind = = GDScriptParser : : DataType : : ENUM & & base_type . is_meta_type ) {
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if ( base_type . builtin_type = = Variant : : DICTIONARY ) {
push_error ( vformat ( R " *(Enums only have Dictionary built-in methods. Function " % s ( ) " does not exist for enum " % s " .)* " , p_call - > function_name , base_type . enum_type ) , p_call - > callee ) ;
} else {
push_error ( vformat ( R " *(The native enum " % s " does not behave like Dictionary and does not have methods of its own.)* " , base_type . enum_type ) , p_call - > callee ) ;
}
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} else if ( ! p_call - > is_super & & callee_type ! = GDScriptParser : : Node : : NONE ) { // Check if the name exists as something else.
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GDScriptParser : : IdentifierNode * callee_id ;
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if ( callee_type = = GDScriptParser : : Node : : IDENTIFIER ) {
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callee_id = static_cast < GDScriptParser : : IdentifierNode * > ( p_call - > callee ) ;
} else {
// Can only be attribute.
callee_id = static_cast < GDScriptParser : : SubscriptNode * > ( p_call - > callee ) - > attribute ;
}
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if ( callee_id ) {
reduce_identifier_from_base ( callee_id , & base_type ) ;
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GDScriptParser : : DataType callee_datatype = callee_id - > get_datatype ( ) ;
if ( callee_datatype . is_set ( ) & & ! callee_datatype . is_variant ( ) ) {
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found = true ;
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if ( callee_datatype . builtin_type = = Variant : : CALLABLE ) {
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push_error ( vformat ( R " *(Name " % s " is a Callable. You can call it with " % s . call ( ) " instead.)* " , p_call - > function_name , p_call - > function_name ) , p_call - > callee ) ;
} else {
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push_error ( vformat ( R " *(Name " % s " called as a function but is a " % s " .)* " , p_call - > function_name , callee_datatype . to_string ( ) ) , p_call - > callee ) ;
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}
# ifdef DEBUG_ENABLED
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} else if ( ! is_self & & ! ( base_type . is_hard_type ( ) & & base_type . kind = = GDScriptParser : : DataType : : BUILTIN ) ) {
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parser - > push_warning ( p_call , GDScriptWarning : : UNSAFE_METHOD_ACCESS , p_call - > function_name , base_type . to_string ( ) ) ;
mark_node_unsafe ( p_call ) ;
# endif
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}
}
}
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if ( ! found & & ( is_self | | ( base_type . is_hard_type ( ) & & base_type . kind = = GDScriptParser : : DataType : : BUILTIN ) ) ) {
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String base_name = is_self & & ! p_call - > is_super ? " self " : base_type . to_string ( ) ;
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# ifdef SUGGEST_GODOT4_RENAMES
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String rename_hint = String ( ) ;
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if ( GLOBAL_GET ( GDScriptWarning : : get_settings_path_from_code ( GDScriptWarning : : Code : : RENAMED_IN_GODOT_4_HINT ) ) . booleanize ( ) ) {
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const char * renamed_function_name = check_for_renamed_identifier ( p_call - > function_name , p_call - > type ) ;
if ( renamed_function_name ) {
rename_hint = " " + vformat ( R " (Did you mean to use " % s " ?) " , String ( renamed_function_name ) + " () " ) ;
}
}
push_error ( vformat ( R " *(Function " % s ( ) " not found in base %s.%s)* " , p_call - > function_name , base_name , rename_hint ) , p_call - > is_super ? p_call : p_call - > callee ) ;
# else
push_error ( vformat ( R " *(Function " % s ( ) " not found in base %s.)* " , p_call - > function_name , base_name ) , p_call - > is_super ? p_call : p_call - > callee ) ;
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# endif // SUGGEST_GODOT4_RENAMES
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} else if ( ! found & & ( ! p_call - > is_super & & base_type . is_hard_type ( ) & & base_type . kind = = GDScriptParser : : DataType : : NATIVE & & base_type . is_meta_type ) ) {
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push_error ( vformat ( R " *(Static function " % s ( ) " not found in base " % s " .)* " , p_call - > function_name , base_type . native_type ) , p_call ) ;
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}
}
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if ( call_type . is_coroutine & & ! p_is_await & & ! p_is_root ) {
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push_error ( vformat ( R " *(Function " % s ( ) " is a coroutine, so it must be called with " await " .)* " , p_call - > function_name ) , p_call ) ;
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}
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p_call - > set_datatype ( call_type ) ;
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}
void GDScriptAnalyzer : : reduce_cast ( GDScriptParser : : CastNode * p_cast ) {
reduce_expression ( p_cast - > operand ) ;
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GDScriptParser : : DataType cast_type = type_from_metatype ( resolve_datatype ( p_cast - > cast_type ) ) ;
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if ( ! cast_type . is_set ( ) ) {
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mark_node_unsafe ( p_cast ) ;
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return ;
}
p_cast - > set_datatype ( cast_type ) ;
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if ( p_cast - > operand - > is_constant ) {
update_const_expression_builtin_type ( p_cast - > operand , cast_type , " cast " , true ) ;
if ( cast_type . is_variant ( ) | | p_cast - > operand - > get_datatype ( ) = = cast_type ) {
p_cast - > is_constant = true ;
p_cast - > reduced_value = p_cast - > operand - > reduced_value ;
}
}
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if ( p_cast - > operand - > type = = GDScriptParser : : Node : : ARRAY & & cast_type . has_container_element_type ( ) ) {
update_array_literal_element_type ( static_cast < GDScriptParser : : ArrayNode * > ( p_cast - > operand ) , cast_type . get_container_element_type ( ) ) ;
}
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if ( ! cast_type . is_variant ( ) ) {
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GDScriptParser : : DataType op_type = p_cast - > operand - > get_datatype ( ) ;
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if ( op_type . is_variant ( ) | | ! op_type . is_hard_type ( ) ) {
mark_node_unsafe ( p_cast ) ;
# ifdef DEBUG_ENABLED
if ( op_type . is_variant ( ) & & ! op_type . is_hard_type ( ) ) {
parser - > push_warning ( p_cast , GDScriptWarning : : UNSAFE_CAST , cast_type . to_string ( ) ) ;
}
# endif
} else {
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bool valid = false ;
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if ( op_type . builtin_type = = Variant : : INT & & cast_type . kind = = GDScriptParser : : DataType : : ENUM ) {
mark_node_unsafe ( p_cast ) ;
valid = true ;
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} else if ( op_type . kind = = GDScriptParser : : DataType : : BUILTIN & & cast_type . kind = = GDScriptParser : : DataType : : BUILTIN ) {
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valid = Variant : : can_convert ( op_type . builtin_type , cast_type . builtin_type ) ;
} else if ( op_type . kind ! = GDScriptParser : : DataType : : BUILTIN & & cast_type . kind ! = GDScriptParser : : DataType : : BUILTIN ) {
valid = is_type_compatible ( cast_type , op_type ) | | is_type_compatible ( op_type , cast_type ) ;
}
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if ( ! valid ) {
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push_error ( vformat ( R " (Invalid cast. Cannot convert from " % s " to " % s " .) " , op_type . to_string ( ) , cast_type . to_string ( ) ) , p_cast - > cast_type ) ;
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}
}
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}
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}
void GDScriptAnalyzer : : reduce_dictionary ( GDScriptParser : : DictionaryNode * p_dictionary ) {
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HashMap < Variant , GDScriptParser : : ExpressionNode * , VariantHasher , StringLikeVariantComparator > elements ;
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for ( int i = 0 ; i < p_dictionary - > elements . size ( ) ; i + + ) {
const GDScriptParser : : DictionaryNode : : Pair & element = p_dictionary - > elements [ i ] ;
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if ( p_dictionary - > style = = GDScriptParser : : DictionaryNode : : PYTHON_DICT ) {
reduce_expression ( element . key ) ;
}
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reduce_expression ( element . value ) ;
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if ( element . key - > is_constant ) {
if ( elements . has ( element . key - > reduced_value ) ) {
push_error ( vformat ( R " (Key " % s " was already used in this dictionary (at line %d).) " , element . key - > reduced_value , elements [ element . key - > reduced_value ] - > start_line ) , element . key ) ;
} else {
elements [ element . key - > reduced_value ] = element . value ;
}
}
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}
// It's dictionary in any case.
GDScriptParser : : DataType dict_type ;
dict_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
dict_type . kind = GDScriptParser : : DataType : : BUILTIN ;
dict_type . builtin_type = Variant : : DICTIONARY ;
dict_type . is_constant = true ;
p_dictionary - > set_datatype ( dict_type ) ;
}
void GDScriptAnalyzer : : reduce_get_node ( GDScriptParser : : GetNodeNode * p_get_node ) {
GDScriptParser : : DataType result ;
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result . kind = GDScriptParser : : DataType : : VARIANT ;
if ( ! ClassDB : : is_parent_class ( parser - > current_class - > base_type . native_type , SNAME ( " Node " ) ) ) {
push_error ( vformat ( R " *(Cannot use shorthand " get_node ( ) " notation ( " % c " ) on a class that isn't a node.)* " , p_get_node - > use_dollar ? ' $ ' : ' % ' ) , p_get_node ) ;
p_get_node - > set_datatype ( result ) ;
return ;
}
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if ( static_context ) {
push_error ( vformat ( R " *(Cannot use shorthand " get_node ( ) " notation ( " % c " ) in a static function.)* " , p_get_node - > use_dollar ? ' $ ' : ' % ' ) , p_get_node ) ;
p_get_node - > set_datatype ( result ) ;
return ;
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}
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mark_lambda_use_self ( ) ;
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result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
result . kind = GDScriptParser : : DataType : : NATIVE ;
result . builtin_type = Variant : : OBJECT ;
result . native_type = SNAME ( " Node " ) ;
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p_get_node - > set_datatype ( result ) ;
}
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GDScriptParser : : DataType GDScriptAnalyzer : : make_global_class_meta_type ( const StringName & p_class_name , const GDScriptParser : : Node * p_source ) {
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GDScriptParser : : DataType type ;
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String path = ScriptServer : : get_global_class_path ( p_class_name ) ;
String ext = path . get_extension ( ) ;
if ( ext = = GDScriptLanguage : : get_singleton ( ) - > get_extension ( ) ) {
Ref < GDScriptParserRef > ref = get_parser_for ( path ) ;
if ( ref . is_null ( ) ) {
push_error ( vformat ( R " (Could not find script for class " % s " .) " , p_class_name ) , p_source ) ;
type . type_source = GDScriptParser : : DataType : : UNDETECTED ;
type . kind = GDScriptParser : : DataType : : VARIANT ;
return type ;
}
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Error err = ref - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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if ( err ) {
push_error ( vformat ( R " (Could not resolve class " % s " , because of a parser error.) " , p_class_name ) , p_source ) ;
type . type_source = GDScriptParser : : DataType : : UNDETECTED ;
type . kind = GDScriptParser : : DataType : : VARIANT ;
return type ;
}
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return ref - > get_parser ( ) - > head - > get_datatype ( ) ;
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} else {
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return make_script_meta_type ( ResourceLoader : : load ( path , " Script " ) ) ;
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}
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}
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void GDScriptAnalyzer : : reduce_identifier_from_base_set_class ( GDScriptParser : : IdentifierNode * p_identifier , GDScriptParser : : DataType p_identifier_datatype ) {
ERR_FAIL_NULL ( p_identifier ) ;
p_identifier - > set_datatype ( p_identifier_datatype ) ;
Error err = OK ;
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Ref < GDScript > scr = GDScriptCache : : get_shallow_script ( p_identifier_datatype . script_path , err ) ;
if ( err ) {
push_error ( vformat ( R " (Error while getting cache for script " % s " .) " , p_identifier_datatype . script_path ) , p_identifier ) ;
return ;
}
p_identifier - > reduced_value = scr - > find_class ( p_identifier_datatype . class_type - > fqcn ) ;
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p_identifier - > is_constant = true ;
}
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void GDScriptAnalyzer : : reduce_identifier_from_base ( GDScriptParser : : IdentifierNode * p_identifier , GDScriptParser : : DataType * p_base ) {
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if ( ! p_identifier - > get_datatype ( ) . has_no_type ( ) ) {
return ;
}
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GDScriptParser : : DataType base ;
if ( p_base = = nullptr ) {
base = type_from_metatype ( parser - > current_class - > get_datatype ( ) ) ;
} else {
base = * p_base ;
}
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StringName name = p_identifier - > name ;
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if ( base . kind = = GDScriptParser : : DataType : : ENUM ) {
if ( base . is_meta_type ) {
if ( base . enum_values . has ( name ) ) {
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p_identifier - > set_datatype ( type_from_metatype ( base ) ) ;
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p_identifier - > is_constant = true ;
p_identifier - > reduced_value = base . enum_values [ name ] ;
return ;
}
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// Enum does not have this value, return.
return ;
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} else {
push_error ( R " (Cannot get property from enum value.) " , p_identifier ) ;
return ;
}
}
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if ( base . kind = = GDScriptParser : : DataType : : BUILTIN ) {
if ( base . is_meta_type ) {
bool valid = true ;
Variant result = Variant : : get_constant_value ( base . builtin_type , name , & valid ) ;
if ( valid ) {
p_identifier - > is_constant = true ;
p_identifier - > reduced_value = result ;
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p_identifier - > set_datatype ( type_from_variant ( result , p_identifier ) ) ;
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} else if ( base . is_hard_type ( ) ) {
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# ifdef SUGGEST_GODOT4_RENAMES
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String rename_hint = String ( ) ;
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if ( GLOBAL_GET ( GDScriptWarning : : get_settings_path_from_code ( GDScriptWarning : : Code : : RENAMED_IN_GODOT_4_HINT ) ) . booleanize ( ) ) {
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const char * renamed_identifier_name = check_for_renamed_identifier ( name , p_identifier - > type ) ;
if ( renamed_identifier_name ) {
rename_hint = " " + vformat ( R " (Did you mean to use " % s " ?) " , renamed_identifier_name ) ;
}
}
push_error ( vformat ( R " (Cannot find constant " % s " on base " % s " .%s) " , name , base . to_string ( ) , rename_hint ) , p_identifier ) ;
# else
push_error ( vformat ( R " (Cannot find constant " % s " on base " % s " .) " , name , base . to_string ( ) ) , p_identifier ) ;
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# endif // SUGGEST_GODOT4_RENAMES
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}
} else {
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switch ( base . builtin_type ) {
case Variant : : NIL : {
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if ( base . is_hard_type ( ) ) {
push_error ( vformat ( R " (Invalid get index " % s " on base Nil) " , name ) , p_identifier ) ;
}
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return ;
}
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case Variant : : DICTIONARY : {
GDScriptParser : : DataType dummy ;
dummy . kind = GDScriptParser : : DataType : : VARIANT ;
p_identifier - > set_datatype ( dummy ) ;
return ;
}
default : {
Callable : : CallError temp ;
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Variant dummy ;
Variant : : construct ( base . builtin_type , dummy , nullptr , 0 , temp ) ;
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List < PropertyInfo > properties ;
dummy . get_property_list ( & properties ) ;
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for ( const PropertyInfo & prop : properties ) {
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if ( prop . name = = name ) {
p_identifier - > set_datatype ( type_from_property ( prop ) ) ;
return ;
}
}
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if ( base . is_hard_type ( ) ) {
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# ifdef SUGGEST_GODOT4_RENAMES
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String rename_hint = String ( ) ;
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if ( GLOBAL_GET ( GDScriptWarning : : get_settings_path_from_code ( GDScriptWarning : : Code : : RENAMED_IN_GODOT_4_HINT ) ) . booleanize ( ) ) {
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const char * renamed_identifier_name = check_for_renamed_identifier ( name , p_identifier - > type ) ;
if ( renamed_identifier_name ) {
rename_hint = " " + vformat ( R " (Did you mean to use " % s " ?) " , renamed_identifier_name ) ;
}
}
push_error ( vformat ( R " (Cannot find property " % s " on base " % s " .%s) " , name , base . to_string ( ) , rename_hint ) , p_identifier ) ;
# else
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push_error ( vformat ( R " (Cannot find property " % s " on base " % s " .) " , name , base . to_string ( ) ) , p_identifier ) ;
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# endif // SUGGEST_GODOT4_RENAMES
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}
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}
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}
}
return ;
}
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GDScriptParser : : ClassNode * base_class = base . class_type ;
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List < GDScriptParser : : ClassNode * > script_classes ;
bool is_base = true ;
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if ( base_class ! = nullptr ) {
get_class_node_current_scope_classes ( base_class , & script_classes ) ;
}
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bool is_constructor = base . is_meta_type & & p_identifier - > name = = SNAME ( " new " ) ;
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for ( GDScriptParser : : ClassNode * script_class : script_classes ) {
if ( p_base = = nullptr & & script_class - > identifier & & script_class - > identifier - > name = = name ) {
reduce_identifier_from_base_set_class ( p_identifier , script_class - > get_datatype ( ) ) ;
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if ( script_class - > outer ! = nullptr ) {
p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CLASS ;
}
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return ;
}
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if ( is_constructor ) {
name = " _init " ;
}
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if ( script_class - > has_member ( name ) ) {
resolve_class_member ( script_class , name , p_identifier ) ;
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GDScriptParser : : ClassNode : : Member member = script_class - > get_member ( name ) ;
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switch ( member . type ) {
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case GDScriptParser : : ClassNode : : Member : : CONSTANT : {
p_identifier - > set_datatype ( member . get_datatype ( ) ) ;
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p_identifier - > is_constant = true ;
p_identifier - > reduced_value = member . constant - > initializer - > reduced_value ;
p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT ;
p_identifier - > constant_source = member . constant ;
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return ;
}
case GDScriptParser : : ClassNode : : Member : : ENUM_VALUE : {
p_identifier - > set_datatype ( member . get_datatype ( ) ) ;
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p_identifier - > is_constant = true ;
p_identifier - > reduced_value = member . enum_value . value ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT ;
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return ;
}
case GDScriptParser : : ClassNode : : Member : : ENUM : {
p_identifier - > set_datatype ( member . get_datatype ( ) ) ;
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p_identifier - > is_constant = true ;
p_identifier - > reduced_value = member . m_enum - > dictionary ;
p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT ;
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return ;
}
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case GDScriptParser : : ClassNode : : Member : : VARIABLE : {
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if ( is_base & & ( ! base . is_meta_type | | member . variable - > is_static ) ) {
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p_identifier - > set_datatype ( member . get_datatype ( ) ) ;
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p_identifier - > source = member . variable - > is_static ? GDScriptParser : : IdentifierNode : : STATIC_VARIABLE : GDScriptParser : : IdentifierNode : : MEMBER_VARIABLE ;
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p_identifier - > variable_source = member . variable ;
member . variable - > usages + = 1 ;
return ;
}
} break ;
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case GDScriptParser : : ClassNode : : Member : : SIGNAL : {
if ( is_base & & ! base . is_meta_type ) {
p_identifier - > set_datatype ( member . get_datatype ( ) ) ;
p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_SIGNAL ;
return ;
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}
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} break ;
case GDScriptParser : : ClassNode : : Member : : FUNCTION : {
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if ( is_base & & ( ! base . is_meta_type | | member . function - > is_static ) ) {
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p_identifier - > set_datatype ( make_callable_type ( member . function - > info ) ) ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_FUNCTION ;
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return ;
}
} break ;
case GDScriptParser : : ClassNode : : Member : : CLASS : {
reduce_identifier_from_base_set_class ( p_identifier , member . get_datatype ( ) ) ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CLASS ;
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return ;
}
default : {
// Do nothing
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}
}
}
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if ( is_base ) {
is_base = script_class - > base_type . class_type ! = nullptr ;
if ( ! is_base & & p_base ! = nullptr ) {
break ;
}
}
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}
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// Check native members. No need for native class recursion because Node exposes all Object's properties.
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const StringName & native = base . native_type ;
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if ( class_exists ( native ) ) {
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if ( is_constructor ) {
name = " _init " ;
}
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MethodInfo method_info ;
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if ( ClassDB : : has_property ( native , name ) ) {
StringName getter_name = ClassDB : : get_property_getter ( native , name ) ;
MethodBind * getter = ClassDB : : get_method ( native , getter_name ) ;
if ( getter ! = nullptr ) {
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bool has_setter = ClassDB : : get_property_setter ( native , name ) ! = StringName ( ) ;
p_identifier - > set_datatype ( type_from_property ( getter - > get_return_info ( ) , false , ! has_setter ) ) ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : INHERITED_VARIABLE ;
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}
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return ;
}
if ( ClassDB : : get_method_info ( native , name , & method_info ) ) {
// Method is callable.
p_identifier - > set_datatype ( make_callable_type ( method_info ) ) ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : INHERITED_VARIABLE ;
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return ;
}
if ( ClassDB : : get_signal ( native , name , & method_info ) ) {
// Signal is a type too.
p_identifier - > set_datatype ( make_signal_type ( method_info ) ) ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : INHERITED_VARIABLE ;
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return ;
}
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if ( ClassDB : : has_enum ( native , name ) ) {
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p_identifier - > set_datatype ( make_native_enum_type ( name , native ) ) ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT ;
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return ;
}
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bool valid = false ;
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int64_t int_constant = ClassDB : : get_integer_constant ( native , name , & valid ) ;
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if ( valid ) {
p_identifier - > is_constant = true ;
p_identifier - > reduced_value = int_constant ;
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p_identifier - > source = GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT ;
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// Check whether this constant, which exists, belongs to an enum
StringName enum_name = ClassDB : : get_integer_constant_enum ( native , name ) ;
if ( enum_name ! = StringName ( ) ) {
p_identifier - > set_datatype ( make_native_enum_type ( enum_name , native , false ) ) ;
} else {
p_identifier - > set_datatype ( type_from_variant ( int_constant , p_identifier ) ) ;
}
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}
}
}
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void GDScriptAnalyzer : : reduce_identifier ( GDScriptParser : : IdentifierNode * p_identifier , bool can_be_builtin ) {
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// TODO: This is an opportunity to further infer types.
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// Check if we are inside an enum. This allows enum values to access other elements of the same enum.
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if ( current_enum ) {
for ( int i = 0 ; i < current_enum - > values . size ( ) ; i + + ) {
const GDScriptParser : : EnumNode : : Value & element = current_enum - > values [ i ] ;
if ( element . identifier - > name = = p_identifier - > name ) {
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StringName enum_name = current_enum - > identifier ? current_enum - > identifier - > name : UNNAMED_ENUM ;
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GDScriptParser : : DataType type = make_enum_type ( enum_name , parser - > current_class - > fqcn , false ) ;
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if ( element . parent_enum - > identifier ) {
type . enum_type = element . parent_enum - > identifier - > name ;
}
p_identifier - > set_datatype ( type ) ;
if ( element . resolved ) {
p_identifier - > is_constant = true ;
p_identifier - > reduced_value = element . value ;
} else {
push_error ( R " (Cannot use another enum element before it was declared.) " , p_identifier ) ;
}
return ; // Found anyway.
}
}
}
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bool found_source = false ;
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// Check if identifier is local.
// If that's the case, the declaration already was solved before.
switch ( p_identifier - > source ) {
case GDScriptParser : : IdentifierNode : : FUNCTION_PARAMETER :
p_identifier - > set_datatype ( p_identifier - > parameter_source - > get_datatype ( ) ) ;
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found_source = true ;
break ;
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case GDScriptParser : : IdentifierNode : : LOCAL_CONSTANT :
case GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT :
p_identifier - > set_datatype ( p_identifier - > constant_source - > get_datatype ( ) ) ;
p_identifier - > is_constant = true ;
// TODO: Constant should have a value on the node itself.
p_identifier - > reduced_value = p_identifier - > constant_source - > initializer - > reduced_value ;
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found_source = true ;
break ;
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case GDScriptParser : : IdentifierNode : : MEMBER_SIGNAL :
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case GDScriptParser : : IdentifierNode : : INHERITED_VARIABLE :
mark_lambda_use_self ( ) ;
break ;
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case GDScriptParser : : IdentifierNode : : MEMBER_VARIABLE :
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mark_lambda_use_self ( ) ;
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p_identifier - > variable_source - > usages + + ;
[[fallthrough]] ;
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case GDScriptParser : : IdentifierNode : : STATIC_VARIABLE :
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case GDScriptParser : : IdentifierNode : : LOCAL_VARIABLE :
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p_identifier - > set_datatype ( p_identifier - > variable_source - > get_datatype ( ) ) ;
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found_source = true ;
break ;
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case GDScriptParser : : IdentifierNode : : LOCAL_ITERATOR :
p_identifier - > set_datatype ( p_identifier - > bind_source - > get_datatype ( ) ) ;
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found_source = true ;
break ;
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case GDScriptParser : : IdentifierNode : : LOCAL_BIND : {
GDScriptParser : : DataType result = p_identifier - > bind_source - > get_datatype ( ) ;
result . is_constant = true ;
p_identifier - > set_datatype ( result ) ;
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found_source = true ;
} break ;
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case GDScriptParser : : IdentifierNode : : UNDEFINED_SOURCE :
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case GDScriptParser : : IdentifierNode : : MEMBER_FUNCTION :
case GDScriptParser : : IdentifierNode : : MEMBER_CLASS :
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break ;
}
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# ifdef DEBUG_ENABLED
if ( ! found_source & & p_identifier - > suite ! = nullptr & & p_identifier - > suite - > has_local ( p_identifier - > name ) ) {
parser - > push_warning ( p_identifier , GDScriptWarning : : CONFUSABLE_LOCAL_USAGE , p_identifier - > name ) ;
}
# endif
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// Not a local, so check members.
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if ( ! found_source ) {
reduce_identifier_from_base ( p_identifier ) ;
if ( p_identifier - > source ! = GDScriptParser : : IdentifierNode : : UNDEFINED_SOURCE | | p_identifier - > get_datatype ( ) . is_set ( ) ) {
// Found.
found_source = true ;
}
}
if ( found_source ) {
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bool source_is_variable = p_identifier - > source = = GDScriptParser : : IdentifierNode : : MEMBER_VARIABLE | | p_identifier - > source = = GDScriptParser : : IdentifierNode : : INHERITED_VARIABLE ;
bool source_is_signal = p_identifier - > source = = GDScriptParser : : IdentifierNode : : MEMBER_SIGNAL ;
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if ( ( source_is_variable | | source_is_signal ) & & static_context ) {
if ( parser - > current_function ) {
// Get the parent function above any lambda.
GDScriptParser : : FunctionNode * parent_function = parser - > current_function ;
while ( parent_function - > source_lambda ) {
parent_function = parent_function - > source_lambda - > parent_function ;
}
push_error ( vformat ( R " *(Cannot access %s " % s " from the static function " % s ( ) " .)* " , source_is_signal ? " signal " : " instance variable " , p_identifier - > name , parent_function - > identifier - > name ) , p_identifier ) ;
} else {
push_error ( vformat ( R " *(Cannot access %s " % s " for a static variable initializer.)* " , source_is_signal ? " signal " : " instance variable " , p_identifier - > name ) , p_identifier ) ;
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}
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}
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if ( current_lambda ! = nullptr ) {
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// If the identifier is a member variable (including the native class properties) or a signal, we consider the lambda to be using `self`, so we keep a reference to the current instance.
if ( source_is_variable | | source_is_signal ) {
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mark_lambda_use_self ( ) ;
return ; // No need to capture.
}
// If the identifier is local, check if it's any kind of capture by comparing their source function.
// Only capture locals and enum values. Constants are still accessible from the lambda using the script reference. If not, this method is done.
if ( p_identifier - > source = = GDScriptParser : : IdentifierNode : : UNDEFINED_SOURCE | | p_identifier - > source = = GDScriptParser : : IdentifierNode : : MEMBER_CONSTANT ) {
return ;
}
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GDScriptParser : : FunctionNode * function_test = current_lambda - > function ;
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// Make sure we aren't capturing variable in the same lambda.
// This also add captures for nested lambdas.
while ( function_test ! = nullptr & & function_test ! = p_identifier - > source_function & & function_test - > source_lambda ! = nullptr & & ! function_test - > source_lambda - > captures_indices . has ( p_identifier - > name ) ) {
function_test - > source_lambda - > captures_indices [ p_identifier - > name ] = function_test - > source_lambda - > captures . size ( ) ;
function_test - > source_lambda - > captures . push_back ( p_identifier ) ;
function_test = function_test - > source_lambda - > parent_function ;
}
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}
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return ;
}
StringName name = p_identifier - > name ;
p_identifier - > source = GDScriptParser : : IdentifierNode : : UNDEFINED_SOURCE ;
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// Check globals. We make an exception for Variant::OBJECT because it's the base class for
// non-builtin types so we allow doing e.g. Object.new()
Variant : : Type builtin_type = GDScriptParser : : get_builtin_type ( name ) ;
if ( builtin_type ! = Variant : : OBJECT & & builtin_type < Variant : : VARIANT_MAX ) {
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if ( can_be_builtin ) {
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p_identifier - > set_datatype ( make_builtin_meta_type ( builtin_type ) ) ;
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return ;
} else {
push_error ( R " (Builtin type cannot be used as a name on its own.) " , p_identifier ) ;
}
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}
if ( class_exists ( name ) ) {
p_identifier - > set_datatype ( make_native_meta_type ( name ) ) ;
return ;
}
if ( ScriptServer : : is_global_class ( name ) ) {
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p_identifier - > set_datatype ( make_global_class_meta_type ( name , p_identifier ) ) ;
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return ;
}
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// Try singletons.
// Do this before globals because this might be a singleton loading another one before it's compiled.
if ( ProjectSettings : : get_singleton ( ) - > has_autoload ( name ) ) {
const ProjectSettings : : AutoloadInfo & autoload = ProjectSettings : : get_singleton ( ) - > get_autoload ( name ) ;
if ( autoload . is_singleton ) {
// Singleton exists, so it's at least a Node.
GDScriptParser : : DataType result ;
result . kind = GDScriptParser : : DataType : : NATIVE ;
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
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if ( ResourceLoader : : get_resource_type ( autoload . path ) = = " GDScript " ) {
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Ref < GDScriptParserRef > singl_parser = get_parser_for ( autoload . path ) ;
if ( singl_parser . is_valid ( ) ) {
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Error err = singl_parser - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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if ( err = = OK ) {
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result = type_from_metatype ( singl_parser - > get_parser ( ) - > head - > get_datatype ( ) ) ;
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}
}
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} else if ( ResourceLoader : : get_resource_type ( autoload . path ) = = " PackedScene " ) {
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if ( GDScriptLanguage : : get_singleton ( ) - > has_any_global_constant ( name ) ) {
Variant constant = GDScriptLanguage : : get_singleton ( ) - > get_any_global_constant ( name ) ;
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Node * node = Object : : cast_to < Node > ( constant ) ;
if ( node ! = nullptr ) {
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Ref < GDScript > scr = node - > get_script ( ) ;
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if ( scr . is_valid ( ) ) {
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Ref < GDScriptParserRef > singl_parser = get_parser_for ( scr - > get_script_path ( ) ) ;
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if ( singl_parser . is_valid ( ) ) {
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Error err = singl_parser - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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if ( err = = OK ) {
result = type_from_metatype ( singl_parser - > get_parser ( ) - > head - > get_datatype ( ) ) ;
}
}
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}
}
}
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}
result . is_constant = true ;
p_identifier - > set_datatype ( result ) ;
return ;
}
}
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if ( CoreConstants : : is_global_constant ( name ) ) {
int index = CoreConstants : : get_global_constant_index ( name ) ;
StringName enum_name = CoreConstants : : get_global_constant_enum ( index ) ;
int64_t value = CoreConstants : : get_global_constant_value ( index ) ;
if ( enum_name ! = StringName ( ) ) {
p_identifier - > set_datatype ( make_global_enum_type ( enum_name , StringName ( ) , false ) ) ;
} else {
p_identifier - > set_datatype ( type_from_variant ( value , p_identifier ) ) ;
}
p_identifier - > is_constant = true ;
p_identifier - > reduced_value = value ;
return ;
}
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if ( GDScriptLanguage : : get_singleton ( ) - > has_any_global_constant ( name ) ) {
Variant constant = GDScriptLanguage : : get_singleton ( ) - > get_any_global_constant ( name ) ;
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p_identifier - > set_datatype ( type_from_variant ( constant , p_identifier ) ) ;
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p_identifier - > is_constant = true ;
p_identifier - > reduced_value = constant ;
return ;
}
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if ( CoreConstants : : is_global_enum ( name ) ) {
p_identifier - > set_datatype ( make_global_enum_type ( name , StringName ( ) , true ) ) ;
if ( ! can_be_builtin ) {
push_error ( vformat ( R " (Global enum " % s " cannot be used on its own.) " , name ) , p_identifier ) ;
}
return ;
}
// Allow "Variant" here since it might be used for nested enums.
if ( can_be_builtin & & name = = SNAME ( " Variant " ) ) {
GDScriptParser : : DataType variant ;
variant . kind = GDScriptParser : : DataType : : VARIANT ;
variant . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
variant . is_meta_type = true ;
variant . is_pseudo_type = true ;
p_identifier - > set_datatype ( variant ) ;
return ;
}
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// Not found.
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// Check if it's a builtin function.
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if ( GDScriptUtilityFunctions : : function_exists ( name ) ) {
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push_error ( vformat ( R " (Built-in function " % s " cannot be used as an identifier.) " , name ) , p_identifier ) ;
} else {
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# ifdef SUGGEST_GODOT4_RENAMES
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String rename_hint = String ( ) ;
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if ( GLOBAL_GET ( GDScriptWarning : : get_settings_path_from_code ( GDScriptWarning : : Code : : RENAMED_IN_GODOT_4_HINT ) ) . booleanize ( ) ) {
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const char * renamed_identifier_name = check_for_renamed_identifier ( name , p_identifier - > type ) ;
if ( renamed_identifier_name ) {
rename_hint = " " + vformat ( R " (Did you mean to use " % s " ?) " , renamed_identifier_name ) ;
}
}
push_error ( vformat ( R " (Identifier " % s " not declared in the current scope.%s) " , name , rename_hint ) , p_identifier ) ;
# else
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push_error ( vformat ( R " (Identifier " % s " not declared in the current scope.) " , name ) , p_identifier ) ;
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# endif // SUGGEST_GODOT4_RENAMES
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}
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GDScriptParser : : DataType dummy ;
dummy . kind = GDScriptParser : : DataType : : VARIANT ;
p_identifier - > set_datatype ( dummy ) ; // Just so type is set to something.
}
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void GDScriptAnalyzer : : reduce_lambda ( GDScriptParser : : LambdaNode * p_lambda ) {
// Lambda is always a Callable.
GDScriptParser : : DataType lambda_type ;
lambda_type . type_source = GDScriptParser : : DataType : : ANNOTATED_INFERRED ;
lambda_type . kind = GDScriptParser : : DataType : : BUILTIN ;
lambda_type . builtin_type = Variant : : CALLABLE ;
p_lambda - > set_datatype ( lambda_type ) ;
if ( p_lambda - > function = = nullptr ) {
return ;
}
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GDScriptParser : : LambdaNode * previous_lambda = current_lambda ;
current_lambda = p_lambda ;
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resolve_function_signature ( p_lambda - > function , p_lambda , true ) ;
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current_lambda = previous_lambda ;
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pending_body_resolution_lambdas . push_back ( p_lambda ) ;
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}
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void GDScriptAnalyzer : : reduce_literal ( GDScriptParser : : LiteralNode * p_literal ) {
p_literal - > reduced_value = p_literal - > value ;
p_literal - > is_constant = true ;
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p_literal - > set_datatype ( type_from_variant ( p_literal - > reduced_value , p_literal ) ) ;
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}
void GDScriptAnalyzer : : reduce_preload ( GDScriptParser : : PreloadNode * p_preload ) {
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if ( ! p_preload - > path ) {
return ;
}
reduce_expression ( p_preload - > path ) ;
if ( ! p_preload - > path - > is_constant ) {
push_error ( " Preloaded path must be a constant string. " , p_preload - > path ) ;
return ;
}
if ( p_preload - > path - > reduced_value . get_type ( ) ! = Variant : : STRING ) {
push_error ( " Preloaded path must be a constant string. " , p_preload - > path ) ;
} else {
p_preload - > resolved_path = p_preload - > path - > reduced_value ;
// TODO: Save this as script dependency.
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if ( p_preload - > resolved_path . is_relative_path ( ) ) {
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p_preload - > resolved_path = parser - > script_path . get_base_dir ( ) . path_join ( p_preload - > resolved_path ) ;
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}
p_preload - > resolved_path = p_preload - > resolved_path . simplify_path ( ) ;
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if ( ! ResourceLoader : : exists ( p_preload - > resolved_path ) ) {
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Ref < FileAccess > file_check = FileAccess : : create ( FileAccess : : ACCESS_RESOURCES ) ;
if ( file_check - > file_exists ( p_preload - > resolved_path ) ) {
push_error ( vformat ( R " (Preload file " % s " has no resource loaders (unrecognized file extension).) " , p_preload - > resolved_path ) , p_preload - > path ) ;
} else {
push_error ( vformat ( R " (Preload file " % s " does not exist.) " , p_preload - > resolved_path ) , p_preload - > path ) ;
}
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} else {
// TODO: Don't load if validating: use completion cache.
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// Must load GDScript and PackedScenes separately to permit cyclic references
// as ResourceLoader::load() detect and reject those.
if ( ResourceLoader : : get_resource_type ( p_preload - > resolved_path ) = = " GDScript " ) {
Error err = OK ;
Ref < GDScript > res = GDScriptCache : : get_shallow_script ( p_preload - > resolved_path , err , parser - > script_path ) ;
p_preload - > resource = res ;
if ( err ! = OK ) {
push_error ( vformat ( R " (Could not preload resource script " % s " .) " , p_preload - > resolved_path ) , p_preload - > path ) ;
}
} else if ( ResourceLoader : : get_resource_type ( p_preload - > resolved_path ) = = " PackedScene " ) {
Error err = OK ;
Ref < PackedScene > res = GDScriptCache : : get_packed_scene ( p_preload - > resolved_path , err , parser - > script_path ) ;
p_preload - > resource = res ;
if ( err ! = OK ) {
push_error ( vformat ( R " (Could not preload resource scene " % s " .) " , p_preload - > resolved_path ) , p_preload - > path ) ;
}
} else {
p_preload - > resource = ResourceLoader : : load ( p_preload - > resolved_path ) ;
if ( p_preload - > resource . is_null ( ) ) {
push_error ( vformat ( R " (Could not preload resource file " % s " .) " , p_preload - > resolved_path ) , p_preload - > path ) ;
}
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}
}
}
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p_preload - > is_constant = true ;
p_preload - > reduced_value = p_preload - > resource ;
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p_preload - > set_datatype ( type_from_variant ( p_preload - > reduced_value , p_preload ) ) ;
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}
void GDScriptAnalyzer : : reduce_self ( GDScriptParser : : SelfNode * p_self ) {
p_self - > is_constant = false ;
p_self - > set_datatype ( type_from_metatype ( parser - > current_class - > get_datatype ( ) ) ) ;
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mark_lambda_use_self ( ) ;
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}
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void GDScriptAnalyzer : : reduce_subscript ( GDScriptParser : : SubscriptNode * p_subscript , bool p_can_be_pseudo_type ) {
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if ( p_subscript - > base = = nullptr ) {
return ;
}
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if ( p_subscript - > base - > type = = GDScriptParser : : Node : : IDENTIFIER ) {
reduce_identifier ( static_cast < GDScriptParser : : IdentifierNode * > ( p_subscript - > base ) , true ) ;
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} else if ( p_subscript - > base - > type = = GDScriptParser : : Node : : SUBSCRIPT ) {
reduce_subscript ( static_cast < GDScriptParser : : SubscriptNode * > ( p_subscript - > base ) , true ) ;
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} else {
reduce_expression ( p_subscript - > base ) ;
}
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GDScriptParser : : DataType result_type ;
if ( p_subscript - > is_attribute ) {
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if ( p_subscript - > attribute = = nullptr ) {
return ;
}
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GDScriptParser : : DataType base_type = p_subscript - > base - > get_datatype ( ) ;
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bool valid = false ;
// If the base is a metatype, use the analyzer instead.
if ( p_subscript - > base - > is_constant & & ! base_type . is_meta_type ) {
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// Just try to get it.
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Variant value = p_subscript - > base - > reduced_value . get_named ( p_subscript - > attribute - > name , valid ) ;
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if ( valid ) {
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p_subscript - > is_constant = true ;
p_subscript - > reduced_value = value ;
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result_type = type_from_variant ( value , p_subscript ) ;
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}
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} else if ( base_type . is_variant ( ) | | ! base_type . is_hard_type ( ) ) {
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valid = ! base_type . is_pseudo_type | | p_can_be_pseudo_type ;
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result_type . kind = GDScriptParser : : DataType : : VARIANT ;
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if ( base_type . is_variant ( ) & & base_type . is_hard_type ( ) & & base_type . is_meta_type & & base_type . is_pseudo_type ) {
// Special case: it may be a global enum with pseudo base (e.g. Variant.Type).
String enum_name ;
if ( p_subscript - > base - > type = = GDScriptParser : : Node : : IDENTIFIER ) {
enum_name = String ( static_cast < GDScriptParser : : IdentifierNode * > ( p_subscript - > base ) - > name ) + ENUM_SEPARATOR + String ( p_subscript - > attribute - > name ) ;
}
if ( CoreConstants : : is_global_enum ( enum_name ) ) {
result_type = make_global_enum_type ( enum_name , StringName ( ) ) ;
} else {
valid = false ;
mark_node_unsafe ( p_subscript ) ;
}
} else {
mark_node_unsafe ( p_subscript ) ;
}
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} else {
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reduce_identifier_from_base ( p_subscript - > attribute , & base_type ) ;
GDScriptParser : : DataType attr_type = p_subscript - > attribute - > get_datatype ( ) ;
if ( attr_type . is_set ( ) ) {
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valid = ! attr_type . is_pseudo_type | | p_can_be_pseudo_type ;
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result_type = attr_type ;
p_subscript - > is_constant = p_subscript - > attribute - > is_constant ;
p_subscript - > reduced_value = p_subscript - > attribute - > reduced_value ;
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} else if ( ! base_type . is_meta_type | | ! base_type . is_constant ) {
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valid = base_type . kind ! = GDScriptParser : : DataType : : BUILTIN ;
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# ifdef DEBUG_ENABLED
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if ( valid ) {
parser - > push_warning ( p_subscript , GDScriptWarning : : UNSAFE_PROPERTY_ACCESS , p_subscript - > attribute - > name , base_type . to_string ( ) ) ;
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}
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# endif
result_type . kind = GDScriptParser : : DataType : : VARIANT ;
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mark_node_unsafe ( p_subscript ) ;
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}
}
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if ( ! valid ) {
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GDScriptParser : : DataType attr_type = p_subscript - > attribute - > get_datatype ( ) ;
if ( ! p_can_be_pseudo_type & & ( attr_type . is_pseudo_type | | result_type . is_pseudo_type ) ) {
push_error ( vformat ( R " (Type " % s " in base " % s " cannot be used on its own.) " , p_subscript - > attribute - > name , type_from_metatype ( base_type ) . to_string ( ) ) , p_subscript - > attribute ) ;
} else {
push_error ( vformat ( R " (Cannot find member " % s " in base " % s " .) " , p_subscript - > attribute - > name , type_from_metatype ( base_type ) . to_string ( ) ) , p_subscript - > attribute ) ;
}
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result_type . kind = GDScriptParser : : DataType : : VARIANT ;
}
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} else {
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if ( p_subscript - > index = = nullptr ) {
return ;
}
reduce_expression ( p_subscript - > index ) ;
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if ( p_subscript - > base - > is_constant & & p_subscript - > index - > is_constant ) {
// Just try to get it.
bool valid = false ;
Variant value = p_subscript - > base - > reduced_value . get ( p_subscript - > index - > reduced_value , & valid ) ;
if ( ! valid ) {
push_error ( vformat ( R " (Cannot get index " % s " from " % s " .) " , p_subscript - > index - > reduced_value , p_subscript - > base - > reduced_value ) , p_subscript - > index ) ;
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result_type . kind = GDScriptParser : : DataType : : VARIANT ;
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} else {
p_subscript - > is_constant = true ;
p_subscript - > reduced_value = value ;
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result_type = type_from_variant ( value , p_subscript ) ;
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}
} else {
GDScriptParser : : DataType base_type = p_subscript - > base - > get_datatype ( ) ;
GDScriptParser : : DataType index_type = p_subscript - > index - > get_datatype ( ) ;
if ( base_type . is_variant ( ) ) {
result_type . kind = GDScriptParser : : DataType : : VARIANT ;
mark_node_unsafe ( p_subscript ) ;
} else {
if ( base_type . kind = = GDScriptParser : : DataType : : BUILTIN & & ! index_type . is_variant ( ) ) {
// Check if indexing is valid.
bool error = index_type . kind ! = GDScriptParser : : DataType : : BUILTIN & & base_type . builtin_type ! = Variant : : DICTIONARY ;
if ( ! error ) {
switch ( base_type . builtin_type ) {
// Expect int or real as index.
case Variant : : PACKED_BYTE_ARRAY :
case Variant : : PACKED_COLOR_ARRAY :
case Variant : : PACKED_FLOAT32_ARRAY :
case Variant : : PACKED_FLOAT64_ARRAY :
case Variant : : PACKED_INT32_ARRAY :
case Variant : : PACKED_INT64_ARRAY :
case Variant : : PACKED_STRING_ARRAY :
case Variant : : PACKED_VECTOR2_ARRAY :
case Variant : : PACKED_VECTOR3_ARRAY :
case Variant : : ARRAY :
case Variant : : STRING :
error = index_type . builtin_type ! = Variant : : INT & & index_type . builtin_type ! = Variant : : FLOAT ;
break ;
// Expect String only.
case Variant : : RECT2 :
case Variant : : RECT2I :
case Variant : : PLANE :
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case Variant : : QUATERNION :
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case Variant : : AABB :
case Variant : : OBJECT :
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error = index_type . builtin_type ! = Variant : : STRING & & index_type . builtin_type ! = Variant : : STRING_NAME ;
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break ;
// Expect String or number.
case Variant : : BASIS :
case Variant : : VECTOR2 :
case Variant : : VECTOR2I :
case Variant : : VECTOR3 :
case Variant : : VECTOR3I :
Implement Vector4, Vector4i, Projection
Implement built-in classes Vector4, Vector4i and Projection.
* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.
These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.
**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.
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case Variant : : VECTOR4 :
case Variant : : VECTOR4I :
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case Variant : : TRANSFORM2D :
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case Variant : : TRANSFORM3D :
Implement Vector4, Vector4i, Projection
Implement built-in classes Vector4, Vector4i and Projection.
* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.
These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.
**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.
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case Variant : : PROJECTION :
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error = index_type . builtin_type ! = Variant : : INT & & index_type . builtin_type ! = Variant : : FLOAT & &
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index_type . builtin_type ! = Variant : : STRING & & index_type . builtin_type ! = Variant : : STRING_NAME ;
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break ;
// Expect String or int.
case Variant : : COLOR :
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error = index_type . builtin_type ! = Variant : : INT & & index_type . builtin_type ! = Variant : : STRING & & index_type . builtin_type ! = Variant : : STRING_NAME ;
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break ;
// Don't support indexing, but we will check it later.
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case Variant : : RID :
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case Variant : : BOOL :
case Variant : : CALLABLE :
case Variant : : FLOAT :
case Variant : : INT :
case Variant : : NIL :
case Variant : : NODE_PATH :
case Variant : : SIGNAL :
case Variant : : STRING_NAME :
break ;
// Here for completeness.
case Variant : : DICTIONARY :
case Variant : : VARIANT_MAX :
break ;
}
if ( error ) {
push_error ( vformat ( R " (Invalid index type " % s " for a base of type " % s " .) " , index_type . to_string ( ) , base_type . to_string ( ) ) , p_subscript - > index ) ;
}
}
} else if ( base_type . kind ! = GDScriptParser : : DataType : : BUILTIN & & ! index_type . is_variant ( ) ) {
if ( index_type . builtin_type ! = Variant : : STRING & & index_type . builtin_type ! = Variant : : STRING_NAME ) {
push_error ( vformat ( R " (Only String or StringName can be used as index for type " % s " , but received a " % s " .) " , base_type . to_string ( ) , index_type . to_string ( ) ) , p_subscript - > index ) ;
}
}
// Check resulting type if possible.
result_type . builtin_type = Variant : : NIL ;
result_type . kind = GDScriptParser : : DataType : : BUILTIN ;
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result_type . type_source = base_type . is_hard_type ( ) ? GDScriptParser : : DataType : : ANNOTATED_INFERRED : GDScriptParser : : DataType : : INFERRED ;
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if ( base_type . kind ! = GDScriptParser : : DataType : : BUILTIN ) {
base_type . builtin_type = Variant : : OBJECT ;
}
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switch ( base_type . builtin_type ) {
// Can't index at all.
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case Variant : : RID :
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case Variant : : BOOL :
case Variant : : CALLABLE :
case Variant : : FLOAT :
case Variant : : INT :
case Variant : : NIL :
case Variant : : NODE_PATH :
case Variant : : SIGNAL :
case Variant : : STRING_NAME :
result_type . kind = GDScriptParser : : DataType : : VARIANT ;
push_error ( vformat ( R " (Cannot use subscript operator on a base of type " % s " .) " , base_type . to_string ( ) ) , p_subscript - > base ) ;
break ;
// Return int.
case Variant : : PACKED_BYTE_ARRAY :
case Variant : : PACKED_INT32_ARRAY :
case Variant : : PACKED_INT64_ARRAY :
case Variant : : VECTOR2I :
case Variant : : VECTOR3I :
Implement Vector4, Vector4i, Projection
Implement built-in classes Vector4, Vector4i and Projection.
* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.
These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.
**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.
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case Variant : : VECTOR4I :
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result_type . builtin_type = Variant : : INT ;
break ;
// Return float.
case Variant : : PACKED_FLOAT32_ARRAY :
case Variant : : PACKED_FLOAT64_ARRAY :
case Variant : : VECTOR2 :
case Variant : : VECTOR3 :
Implement Vector4, Vector4i, Projection
Implement built-in classes Vector4, Vector4i and Projection.
* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.
These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.
**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.
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case Variant : : VECTOR4 :
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case Variant : : QUATERNION :
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result_type . builtin_type = Variant : : FLOAT ;
break ;
// Return Color.
case Variant : : PACKED_COLOR_ARRAY :
result_type . builtin_type = Variant : : COLOR ;
break ;
// Return String.
case Variant : : PACKED_STRING_ARRAY :
case Variant : : STRING :
result_type . builtin_type = Variant : : STRING ;
break ;
// Return Vector2.
case Variant : : PACKED_VECTOR2_ARRAY :
case Variant : : TRANSFORM2D :
case Variant : : RECT2 :
result_type . builtin_type = Variant : : VECTOR2 ;
break ;
// Return Vector2I.
case Variant : : RECT2I :
result_type . builtin_type = Variant : : VECTOR2I ;
break ;
// Return Vector3.
case Variant : : PACKED_VECTOR3_ARRAY :
case Variant : : AABB :
case Variant : : BASIS :
result_type . builtin_type = Variant : : VECTOR3 ;
break ;
// Depends on the index.
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case Variant : : TRANSFORM3D :
Implement Vector4, Vector4i, Projection
Implement built-in classes Vector4, Vector4i and Projection.
* Two versions of Vector4 (float and integer).
* A Projection class, which is a 4x4 matrix specialized in projection types.
These types have been requested for a long time, but given they were very corner case they were not added before.
Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity.
**Q**: Why Projection and not Matrix4?
**A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.
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case Variant : : PROJECTION :
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case Variant : : PLANE :
case Variant : : COLOR :
case Variant : : DICTIONARY :
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case Variant : : OBJECT :
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result_type . kind = GDScriptParser : : DataType : : VARIANT ;
result_type . type_source = GDScriptParser : : DataType : : UNDETECTED ;
break ;
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// Can have an element type.
case Variant : : ARRAY :
if ( base_type . has_container_element_type ( ) ) {
result_type = base_type . get_container_element_type ( ) ;
result_type . type_source = base_type . type_source ;
} else {
result_type . kind = GDScriptParser : : DataType : : VARIANT ;
result_type . type_source = GDScriptParser : : DataType : : UNDETECTED ;
}
break ;
2020-06-11 00:53:25 +02:00
// Here for completeness.
case Variant : : VARIANT_MAX :
break ;
}
}
}
}
p_subscript - > set_datatype ( result_type ) ;
}
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void GDScriptAnalyzer : : reduce_ternary_op ( GDScriptParser : : TernaryOpNode * p_ternary_op , bool p_is_root ) {
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reduce_expression ( p_ternary_op - > condition ) ;
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reduce_expression ( p_ternary_op - > true_expr , p_is_root ) ;
reduce_expression ( p_ternary_op - > false_expr , p_is_root ) ;
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GDScriptParser : : DataType result ;
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if ( p_ternary_op - > condition & & p_ternary_op - > condition - > is_constant & & p_ternary_op - > true_expr - > is_constant & & p_ternary_op - > false_expr & & p_ternary_op - > false_expr - > is_constant ) {
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p_ternary_op - > is_constant = true ;
if ( p_ternary_op - > condition - > reduced_value . booleanize ( ) ) {
p_ternary_op - > reduced_value = p_ternary_op - > true_expr - > reduced_value ;
} else {
p_ternary_op - > reduced_value = p_ternary_op - > false_expr - > reduced_value ;
}
}
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GDScriptParser : : DataType true_type ;
if ( p_ternary_op - > true_expr ) {
true_type = p_ternary_op - > true_expr - > get_datatype ( ) ;
} else {
true_type . kind = GDScriptParser : : DataType : : VARIANT ;
}
GDScriptParser : : DataType false_type ;
if ( p_ternary_op - > false_expr ) {
false_type = p_ternary_op - > false_expr - > get_datatype ( ) ;
} else {
false_type . kind = GDScriptParser : : DataType : : VARIANT ;
}
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if ( true_type . is_variant ( ) | | false_type . is_variant ( ) ) {
result . kind = GDScriptParser : : DataType : : VARIANT ;
} else {
result = true_type ;
if ( ! is_type_compatible ( true_type , false_type ) ) {
result = false_type ;
if ( ! is_type_compatible ( false_type , true_type ) ) {
result . kind = GDScriptParser : : DataType : : VARIANT ;
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# ifdef DEBUG_ENABLED
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parser - > push_warning ( p_ternary_op , GDScriptWarning : : INCOMPATIBLE_TERNARY ) ;
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# endif
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}
}
}
2023-02-01 13:52:18 +01:00
result . type_source = true_type . is_hard_type ( ) & & false_type . is_hard_type ( ) ? GDScriptParser : : DataType : : ANNOTATED_INFERRED : GDScriptParser : : DataType : : INFERRED ;
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p_ternary_op - > set_datatype ( result ) ;
}
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void GDScriptAnalyzer : : reduce_type_test ( GDScriptParser : : TypeTestNode * p_type_test ) {
GDScriptParser : : DataType result ;
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : BOOL ;
p_type_test - > set_datatype ( result ) ;
if ( ! p_type_test - > operand | | ! p_type_test - > test_type ) {
return ;
}
reduce_expression ( p_type_test - > operand ) ;
GDScriptParser : : DataType operand_type = p_type_test - > operand - > get_datatype ( ) ;
GDScriptParser : : DataType test_type = type_from_metatype ( resolve_datatype ( p_type_test - > test_type ) ) ;
p_type_test - > test_datatype = test_type ;
if ( ! operand_type . is_set ( ) | | ! test_type . is_set ( ) ) {
return ;
}
if ( p_type_test - > operand - > is_constant ) {
p_type_test - > is_constant = true ;
p_type_test - > reduced_value = false ;
if ( ! is_type_compatible ( test_type , operand_type ) ) {
push_error ( vformat ( R " (Expression is of type " % s " so it can't be of type " % s " .) " , operand_type . to_string ( ) , test_type . to_string ( ) ) , p_type_test - > operand ) ;
} else if ( is_type_compatible ( test_type , type_from_variant ( p_type_test - > operand - > reduced_value , p_type_test - > operand ) ) ) {
p_type_test - > reduced_value = test_type . builtin_type ! = Variant : : OBJECT | | ! p_type_test - > operand - > reduced_value . is_null ( ) ;
}
return ;
}
if ( ! is_type_compatible ( test_type , operand_type ) & & ! is_type_compatible ( operand_type , test_type ) ) {
if ( operand_type . is_hard_type ( ) ) {
push_error ( vformat ( R " (Expression is of type " % s " so it can't be of type " % s " .) " , operand_type . to_string ( ) , test_type . to_string ( ) ) , p_type_test - > operand ) ;
} else {
downgrade_node_type_source ( p_type_test - > operand ) ;
}
}
}
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void GDScriptAnalyzer : : reduce_unary_op ( GDScriptParser : : UnaryOpNode * p_unary_op ) {
reduce_expression ( p_unary_op - > operand ) ;
GDScriptParser : : DataType result ;
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if ( p_unary_op - > operand = = nullptr ) {
result . kind = GDScriptParser : : DataType : : VARIANT ;
p_unary_op - > set_datatype ( result ) ;
return ;
}
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GDScriptParser : : DataType operand_type = p_unary_op - > operand - > get_datatype ( ) ;
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if ( p_unary_op - > operand - > is_constant ) {
p_unary_op - > is_constant = true ;
p_unary_op - > reduced_value = Variant : : evaluate ( p_unary_op - > variant_op , p_unary_op - > operand - > reduced_value , Variant ( ) ) ;
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result = type_from_variant ( p_unary_op - > reduced_value , p_unary_op ) ;
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}
if ( operand_type . is_variant ( ) ) {
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result . kind = GDScriptParser : : DataType : : VARIANT ;
mark_node_unsafe ( p_unary_op ) ;
} else {
bool valid = false ;
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result = get_operation_type ( p_unary_op - > variant_op , operand_type , valid , p_unary_op ) ;
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if ( ! valid ) {
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push_error ( vformat ( R " (Invalid operand of type " % s " for unary operator " % s " .) " , operand_type . to_string ( ) , Variant : : get_operator_name ( p_unary_op - > variant_op ) ) , p_unary_op ) ;
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}
}
p_unary_op - > set_datatype ( result ) ;
}
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Variant GDScriptAnalyzer : : make_expression_reduced_value ( GDScriptParser : : ExpressionNode * p_expression , bool & is_reduced ) {
Variant value ;
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if ( p_expression = = nullptr ) {
return value ;
}
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if ( p_expression - > is_constant ) {
is_reduced = true ;
value = p_expression - > reduced_value ;
} else if ( p_expression - > type = = GDScriptParser : : Node : : ARRAY ) {
value = make_array_reduced_value ( static_cast < GDScriptParser : : ArrayNode * > ( p_expression ) , is_reduced ) ;
} else if ( p_expression - > type = = GDScriptParser : : Node : : DICTIONARY ) {
value = make_dictionary_reduced_value ( static_cast < GDScriptParser : : DictionaryNode * > ( p_expression ) , is_reduced ) ;
} else if ( p_expression - > type = = GDScriptParser : : Node : : SUBSCRIPT ) {
value = make_subscript_reduced_value ( static_cast < GDScriptParser : : SubscriptNode * > ( p_expression ) , is_reduced ) ;
}
return value ;
}
Variant GDScriptAnalyzer : : make_array_reduced_value ( GDScriptParser : : ArrayNode * p_array , bool & is_reduced ) {
Array array = p_array - > get_datatype ( ) . has_container_element_type ( ) ? make_array_from_element_datatype ( p_array - > get_datatype ( ) . get_container_element_type ( ) ) : Array ( ) ;
array . resize ( p_array - > elements . size ( ) ) ;
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for ( int i = 0 ; i < p_array - > elements . size ( ) ; i + + ) {
GDScriptParser : : ExpressionNode * element = p_array - > elements [ i ] ;
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bool is_element_value_reduced = false ;
Variant element_value = make_expression_reduced_value ( element , is_element_value_reduced ) ;
if ( ! is_element_value_reduced ) {
return Variant ( ) ;
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}
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array [ i ] = element_value ;
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}
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array . make_read_only ( ) ;
is_reduced = true ;
return array ;
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}
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Variant GDScriptAnalyzer : : make_dictionary_reduced_value ( GDScriptParser : : DictionaryNode * p_dictionary , bool & is_reduced ) {
Dictionary dictionary ;
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for ( int i = 0 ; i < p_dictionary - > elements . size ( ) ; i + + ) {
const GDScriptParser : : DictionaryNode : : Pair & element = p_dictionary - > elements [ i ] ;
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bool is_element_key_reduced = false ;
Variant element_key = make_expression_reduced_value ( element . key , is_element_key_reduced ) ;
if ( ! is_element_key_reduced ) {
return Variant ( ) ;
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}
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bool is_element_value_reduced = false ;
Variant element_value = make_expression_reduced_value ( element . value , is_element_value_reduced ) ;
if ( ! is_element_value_reduced ) {
return Variant ( ) ;
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}
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dictionary [ element_key ] = element_value ;
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}
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dictionary . make_read_only ( ) ;
is_reduced = true ;
return dictionary ;
}
Variant GDScriptAnalyzer : : make_subscript_reduced_value ( GDScriptParser : : SubscriptNode * p_subscript , bool & is_reduced ) {
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if ( p_subscript - > base = = nullptr | | p_subscript - > index = = nullptr ) {
return Variant ( ) ;
}
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bool is_base_value_reduced = false ;
Variant base_value = make_expression_reduced_value ( p_subscript - > base , is_base_value_reduced ) ;
if ( ! is_base_value_reduced ) {
return Variant ( ) ;
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}
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if ( p_subscript - > is_attribute ) {
bool is_valid = false ;
Variant value = base_value . get_named ( p_subscript - > attribute - > name , is_valid ) ;
if ( is_valid ) {
is_reduced = true ;
return value ;
} else {
return Variant ( ) ;
}
} else {
bool is_index_value_reduced = false ;
Variant index_value = make_expression_reduced_value ( p_subscript - > index , is_index_value_reduced ) ;
if ( ! is_index_value_reduced ) {
return Variant ( ) ;
}
bool is_valid = false ;
Variant value = base_value . get ( index_value , & is_valid ) ;
if ( is_valid ) {
is_reduced = true ;
return value ;
} else {
return Variant ( ) ;
}
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}
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}
Array GDScriptAnalyzer : : make_array_from_element_datatype ( const GDScriptParser : : DataType & p_element_datatype , const GDScriptParser : : Node * p_source_node ) {
Array array ;
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if ( p_element_datatype . builtin_type = = Variant : : OBJECT ) {
Ref < Script > script_type = p_element_datatype . script_type ;
if ( p_element_datatype . kind = = GDScriptParser : : DataType : : CLASS & & script_type . is_null ( ) ) {
Error err = OK ;
Ref < GDScript > scr = GDScriptCache : : get_shallow_script ( p_element_datatype . script_path , err ) ;
if ( err ) {
push_error ( vformat ( R " (Error while getting cache for script " % s " .) " , p_element_datatype . script_path ) , p_source_node ) ;
return array ;
}
script_type . reference_ptr ( scr - > find_class ( p_element_datatype . class_type - > fqcn ) ) ;
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}
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array . set_typed ( p_element_datatype . builtin_type , p_element_datatype . native_type , script_type ) ;
} else {
array . set_typed ( p_element_datatype . builtin_type , StringName ( ) , Variant ( ) ) ;
}
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return array ;
}
Variant GDScriptAnalyzer : : make_variable_default_value ( GDScriptParser : : VariableNode * p_variable ) {
Variant result = Variant ( ) ;
if ( p_variable - > initializer ) {
bool is_initializer_value_reduced = false ;
Variant initializer_value = make_expression_reduced_value ( p_variable - > initializer , is_initializer_value_reduced ) ;
if ( is_initializer_value_reduced ) {
result = initializer_value ;
}
} else {
GDScriptParser : : DataType datatype = p_variable - > get_datatype ( ) ;
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if ( datatype . is_hard_type ( ) ) {
if ( datatype . kind = = GDScriptParser : : DataType : : BUILTIN & & datatype . builtin_type ! = Variant : : OBJECT ) {
if ( datatype . builtin_type = = Variant : : ARRAY & & datatype . has_container_element_type ( ) ) {
result = make_array_from_element_datatype ( datatype . get_container_element_type ( ) ) ;
} else {
VariantInternal : : initialize ( & result , datatype . builtin_type ) ;
}
} else if ( datatype . kind = = GDScriptParser : : DataType : : ENUM ) {
result = 0 ;
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}
}
}
return result ;
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}
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const HashMap < String , Ref < GDScriptParserRef > > & GDScriptAnalyzer : : get_depended_parsers ( ) {
return depended_parsers ;
}
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GDScriptParser : : DataType GDScriptAnalyzer : : type_from_variant ( const Variant & p_value , const GDScriptParser : : Node * p_source ) {
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GDScriptParser : : DataType result ;
result . is_constant = true ;
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = p_value . get_type ( ) ;
result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ; // Constant has explicit type.
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if ( p_value . get_type ( ) = = Variant : : ARRAY ) {
const Array & array = p_value ;
if ( array . get_typed_script ( ) ) {
result . set_container_element_type ( type_from_metatype ( make_script_meta_type ( array . get_typed_script ( ) ) ) ) ;
} else if ( array . get_typed_class_name ( ) ) {
result . set_container_element_type ( type_from_metatype ( make_native_meta_type ( array . get_typed_class_name ( ) ) ) ) ;
} else if ( array . get_typed_builtin ( ) ! = Variant : : NIL ) {
result . set_container_element_type ( type_from_metatype ( make_builtin_meta_type ( ( Variant : : Type ) array . get_typed_builtin ( ) ) ) ) ;
}
} else if ( p_value . get_type ( ) = = Variant : : OBJECT ) {
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// Object is treated as a native type, not a builtin type.
result . kind = GDScriptParser : : DataType : : NATIVE ;
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Object * obj = p_value ;
if ( ! obj ) {
return GDScriptParser : : DataType ( ) ;
}
result . native_type = obj - > get_class_name ( ) ;
Ref < Script > scr = p_value ; // Check if value is a script itself.
if ( scr . is_valid ( ) ) {
result . is_meta_type = true ;
} else {
result . is_meta_type = false ;
scr = obj - > get_script ( ) ;
}
if ( scr . is_valid ( ) ) {
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Ref < GDScript > gds = scr ;
if ( gds . is_valid ( ) ) {
// This might be an inner class, so we want to get the parser for the root.
// But still get the inner class from that tree.
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String script_path = gds - > get_script_path ( ) ;
Ref < GDScriptParserRef > ref = get_parser_for ( script_path ) ;
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if ( ref . is_null ( ) ) {
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push_error ( vformat ( R " (Could not find script " % s " .) " , script_path ) , p_source ) ;
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GDScriptParser : : DataType error_type ;
error_type . kind = GDScriptParser : : DataType : : VARIANT ;
return error_type ;
}
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Error err = ref - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
GDScriptParser : : ClassNode * found = nullptr ;
if ( err = = OK ) {
found = ref - > get_parser ( ) - > find_class ( gds - > fully_qualified_name ) ;
if ( found ! = nullptr ) {
err = resolve_class_inheritance ( found , p_source ) ;
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}
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}
if ( err | | found = = nullptr ) {
push_error ( vformat ( R " (Could not resolve script " % s " .) " , script_path ) , p_source ) ;
GDScriptParser : : DataType error_type ;
error_type . kind = GDScriptParser : : DataType : : VARIANT ;
return error_type ;
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}
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result . kind = GDScriptParser : : DataType : : CLASS ;
result . native_type = found - > get_datatype ( ) . native_type ;
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result . class_type = found ;
result . script_path = ref - > get_parser ( ) - > script_path ;
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} else {
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result . kind = GDScriptParser : : DataType : : SCRIPT ;
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result . native_type = scr - > get_instance_base_type ( ) ;
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result . script_path = scr - > get_path ( ) ;
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}
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result . script_type = scr ;
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} else {
result . kind = GDScriptParser : : DataType : : NATIVE ;
if ( result . native_type = = GDScriptNativeClass : : get_class_static ( ) ) {
result . is_meta_type = true ;
}
}
}
return result ;
}
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GDScriptParser : : DataType GDScriptAnalyzer : : type_from_metatype ( const GDScriptParser : : DataType & p_meta_type ) {
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GDScriptParser : : DataType result = p_meta_type ;
result . is_meta_type = false ;
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result . is_pseudo_type = false ;
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if ( p_meta_type . kind = = GDScriptParser : : DataType : : ENUM ) {
result . builtin_type = Variant : : INT ;
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} else {
result . is_constant = false ;
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}
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return result ;
}
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GDScriptParser : : DataType GDScriptAnalyzer : : type_from_property ( const PropertyInfo & p_property , bool p_is_arg , bool p_is_readonly ) const {
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GDScriptParser : : DataType result ;
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result . is_read_only = p_is_readonly ;
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result . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
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if ( p_property . type = = Variant : : NIL & & ( p_is_arg | | ( p_property . usage & PROPERTY_USAGE_NIL_IS_VARIANT ) ) ) {
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// Variant
result . kind = GDScriptParser : : DataType : : VARIANT ;
return result ;
}
result . builtin_type = p_property . type ;
if ( p_property . type = = Variant : : OBJECT ) {
result . kind = GDScriptParser : : DataType : : NATIVE ;
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result . native_type = p_property . class_name = = StringName ( ) ? SNAME ( " Object " ) : p_property . class_name ;
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} else {
result . kind = GDScriptParser : : DataType : : BUILTIN ;
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result . builtin_type = p_property . type ;
if ( p_property . type = = Variant : : ARRAY & & p_property . hint = = PROPERTY_HINT_ARRAY_TYPE ) {
// Check element type.
StringName elem_type_name = p_property . hint_string ;
GDScriptParser : : DataType elem_type ;
elem_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
Variant : : Type elem_builtin_type = GDScriptParser : : get_builtin_type ( elem_type_name ) ;
if ( elem_builtin_type < Variant : : VARIANT_MAX ) {
// Builtin type.
elem_type . kind = GDScriptParser : : DataType : : BUILTIN ;
elem_type . builtin_type = elem_builtin_type ;
} else if ( class_exists ( elem_type_name ) ) {
elem_type . kind = GDScriptParser : : DataType : : NATIVE ;
elem_type . builtin_type = Variant : : OBJECT ;
elem_type . native_type = p_property . hint_string ;
} else if ( ScriptServer : : is_global_class ( elem_type_name ) ) {
// Just load this as it shouldn't be a GDScript.
Ref < Script > script = ResourceLoader : : load ( ScriptServer : : get_global_class_path ( elem_type_name ) ) ;
elem_type . kind = GDScriptParser : : DataType : : SCRIPT ;
elem_type . builtin_type = Variant : : OBJECT ;
elem_type . native_type = script - > get_instance_base_type ( ) ;
elem_type . script_type = script ;
} else {
ERR_FAIL_V_MSG ( result , " Could not find element type from property hint of a typed array. " ) ;
}
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elem_type . is_constant = false ;
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result . set_container_element_type ( elem_type ) ;
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} else if ( p_property . type = = Variant : : INT ) {
// Check if it's enum.
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if ( ( p_property . usage & PROPERTY_USAGE_CLASS_IS_ENUM ) & & p_property . class_name ! = StringName ( ) ) {
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if ( CoreConstants : : is_global_enum ( p_property . class_name ) ) {
result = make_global_enum_type ( p_property . class_name , StringName ( ) , false ) ;
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result . is_constant = false ;
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} else {
Vector < String > names = String ( p_property . class_name ) . split ( ENUM_SEPARATOR ) ;
if ( names . size ( ) = = 2 ) {
result = make_native_enum_type ( names [ 1 ] , names [ 0 ] , false ) ;
result . is_constant = false ;
}
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}
}
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// PROPERTY_USAGE_CLASS_IS_BITFIELD: BitField[T] isn't supported (yet?), use plain int.
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}
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}
return result ;
}
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bool GDScriptAnalyzer : : get_function_signature ( GDScriptParser : : Node * p_source , bool p_is_constructor , GDScriptParser : : DataType p_base_type , const StringName & p_function , GDScriptParser : : DataType & r_return_type , List < GDScriptParser : : DataType > & r_par_types , int & r_default_arg_count , BitField < MethodFlags > & r_method_flags , StringName * r_native_class ) {
r_method_flags = METHOD_FLAGS_DEFAULT ;
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r_default_arg_count = 0 ;
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if ( r_native_class ) {
* r_native_class = StringName ( ) ;
}
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StringName function_name = p_function ;
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bool was_enum = false ;
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if ( p_base_type . kind = = GDScriptParser : : DataType : : ENUM ) {
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was_enum = true ;
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if ( p_base_type . is_meta_type ) {
// Enum type can be treated as a dictionary value.
p_base_type . kind = GDScriptParser : : DataType : : BUILTIN ;
p_base_type . is_meta_type = false ;
} else {
push_error ( " Cannot call function on enum value. " , p_source ) ;
return false ;
}
}
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if ( p_base_type . kind = = GDScriptParser : : DataType : : BUILTIN ) {
// Construct a base type to get methods.
Callable : : CallError err ;
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Variant dummy ;
Variant : : construct ( p_base_type . builtin_type , dummy , nullptr , 0 , err ) ;
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if ( err . error ! = Callable : : CallError : : CALL_OK ) {
ERR_FAIL_V_MSG ( false , " Could not construct base Variant type. " ) ;
}
List < MethodInfo > methods ;
dummy . get_method_list ( & methods ) ;
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for ( const MethodInfo & E : methods ) {
if ( E . name = = p_function ) {
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function_signature_from_info ( E , r_return_type , r_par_types , r_default_arg_count , r_method_flags ) ;
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// Cannot use non-const methods on enums.
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if ( ! r_method_flags . has_flag ( METHOD_FLAG_STATIC ) & & was_enum & & ! ( E . flags & METHOD_FLAG_CONST ) ) {
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push_error ( vformat ( R " *(Cannot call non-const Dictionary function " % s ( ) " on enum " % s " .)* " , p_function , p_base_type . enum_type ) , p_source ) ;
}
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return true ;
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}
}
return false ;
}
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StringName base_native = p_base_type . native_type ;
if ( base_native ! = StringName ( ) ) {
// Empty native class might happen in some Script implementations.
// Just ignore it.
if ( ! class_exists ( base_native ) ) {
push_error ( vformat ( " Native class %s used in script doesn't exist or isn't exposed. " , base_native ) , p_source ) ;
return false ;
} else if ( p_is_constructor & & ! ClassDB : : can_instantiate ( base_native ) ) {
if ( p_base_type . kind = = GDScriptParser : : DataType : : CLASS ) {
push_error ( vformat ( R " (Class " % s " cannot be constructed as it is based on abstract native class " % s " .) " , p_base_type . class_type - > fqcn . get_file ( ) , base_native ) , p_source ) ;
} else if ( p_base_type . kind = = GDScriptParser : : DataType : : SCRIPT ) {
push_error ( vformat ( R " (Script " % s " cannot be constructed as it is based on abstract native class " % s " .) " , p_base_type . script_path . get_file ( ) , base_native ) , p_source ) ;
} else {
push_error ( vformat ( R " (Native class " % s " cannot be constructed as it is abstract.) " , base_native ) , p_source ) ;
}
return false ;
}
}
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if ( p_is_constructor ) {
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function_name = GDScriptLanguage : : get_singleton ( ) - > strings . _init ;
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r_method_flags . set_flag ( METHOD_FLAG_STATIC ) ;
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}
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GDScriptParser : : ClassNode * base_class = p_base_type . class_type ;
GDScriptParser : : FunctionNode * found_function = nullptr ;
while ( found_function = = nullptr & & base_class ! = nullptr ) {
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if ( base_class - > has_member ( function_name ) ) {
if ( base_class - > get_member ( function_name ) . type ! = GDScriptParser : : ClassNode : : Member : : FUNCTION ) {
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// TODO: If this is Callable it can have a better error message.
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push_error ( vformat ( R " (Member " % s " is not a function.) " , function_name ) , p_source ) ;
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return false ;
}
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resolve_class_member ( base_class , function_name , p_source ) ;
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found_function = base_class - > get_member ( function_name ) . function ;
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}
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resolve_class_inheritance ( base_class , p_source ) ;
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base_class = base_class - > base_type . class_type ;
}
if ( found_function ! = nullptr ) {
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if ( p_is_constructor | | found_function - > is_static ) {
r_method_flags . set_flag ( METHOD_FLAG_STATIC ) ;
}
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for ( int i = 0 ; i < found_function - > parameters . size ( ) ; i + + ) {
r_par_types . push_back ( found_function - > parameters [ i ] - > get_datatype ( ) ) ;
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if ( found_function - > parameters [ i ] - > initializer ! = nullptr ) {
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r_default_arg_count + + ;
}
}
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r_return_type = p_is_constructor ? p_base_type : found_function - > get_datatype ( ) ;
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r_return_type . is_meta_type = false ;
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r_return_type . is_coroutine = found_function - > is_coroutine ;
return true ;
}
Ref < Script > base_script = p_base_type . script_type ;
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while ( base_script . is_valid ( ) & & base_script - > has_method ( function_name ) ) {
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MethodInfo info = base_script - > get_method_info ( function_name ) ;
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if ( ! ( info = = MethodInfo ( ) ) ) {
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return function_signature_from_info ( info , r_return_type , r_par_types , r_default_arg_count , r_method_flags ) ;
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}
base_script = base_script - > get_base_script ( ) ;
}
// If the base is a script, it might be trying to access members of the Script class itself.
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if ( p_base_type . is_meta_type & & ! p_is_constructor & & ( p_base_type . kind = = GDScriptParser : : DataType : : SCRIPT | | p_base_type . kind = = GDScriptParser : : DataType : : CLASS ) ) {
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MethodInfo info ;
StringName script_class = p_base_type . kind = = GDScriptParser : : DataType : : SCRIPT ? p_base_type . script_type - > get_class_name ( ) : StringName ( GDScript : : get_class_static ( ) ) ;
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if ( ClassDB : : get_method_info ( script_class , function_name , & info ) ) {
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return function_signature_from_info ( info , r_return_type , r_par_types , r_default_arg_count , r_method_flags ) ;
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}
}
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if ( p_is_constructor ) {
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// Native types always have a default constructor.
r_return_type = p_base_type ;
r_return_type . type_source = GDScriptParser : : DataType : : ANNOTATED_EXPLICIT ;
r_return_type . is_meta_type = false ;
return true ;
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}
MethodInfo info ;
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if ( ClassDB : : get_method_info ( base_native , function_name , & info ) ) {
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bool valid = function_signature_from_info ( info , r_return_type , r_par_types , r_default_arg_count , r_method_flags ) ;
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if ( valid & & Engine : : get_singleton ( ) - > has_singleton ( base_native ) ) {
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r_method_flags . set_flag ( METHOD_FLAG_STATIC ) ;
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}
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# ifdef DEBUG_ENABLED
MethodBind * native_method = ClassDB : : get_method ( base_native , function_name ) ;
if ( native_method & & r_native_class ) {
* r_native_class = native_method - > get_instance_class ( ) ;
}
# endif
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return valid ;
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}
return false ;
}
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bool GDScriptAnalyzer : : function_signature_from_info ( const MethodInfo & p_info , GDScriptParser : : DataType & r_return_type , List < GDScriptParser : : DataType > & r_par_types , int & r_default_arg_count , BitField < MethodFlags > & r_method_flags ) {
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r_return_type = type_from_property ( p_info . return_val ) ;
r_default_arg_count = p_info . default_arguments . size ( ) ;
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r_method_flags = p_info . flags ;
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for ( const PropertyInfo & E : p_info . arguments ) {
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r_par_types . push_back ( type_from_property ( E , true ) ) ;
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}
return true ;
}
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void GDScriptAnalyzer : : validate_call_arg ( const MethodInfo & p_method , const GDScriptParser : : CallNode * p_call ) {
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List < GDScriptParser : : DataType > arg_types ;
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for ( const PropertyInfo & E : p_method . arguments ) {
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arg_types . push_back ( type_from_property ( E , true ) ) ;
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}
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validate_call_arg ( arg_types , p_method . default_arguments . size ( ) , ( p_method . flags & METHOD_FLAG_VARARG ) ! = 0 , p_call ) ;
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}
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void GDScriptAnalyzer : : validate_call_arg ( const List < GDScriptParser : : DataType > & p_par_types , int p_default_args_count , bool p_is_vararg , const GDScriptParser : : CallNode * p_call ) {
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if ( p_call - > arguments . size ( ) < p_par_types . size ( ) - p_default_args_count ) {
push_error ( vformat ( R " *(Too few arguments for " % s ( ) " call. Expected at least %d but received %d.)* " , p_call - > function_name , p_par_types . size ( ) - p_default_args_count , p_call - > arguments . size ( ) ) , p_call ) ;
}
if ( ! p_is_vararg & & p_call - > arguments . size ( ) > p_par_types . size ( ) ) {
push_error ( vformat ( R " *(Too many arguments for " % s ( ) " call. Expected at most %d but received %d.)* " , p_call - > function_name , p_par_types . size ( ) , p_call - > arguments . size ( ) ) , p_call - > arguments [ p_par_types . size ( ) ] ) ;
}
for ( int i = 0 ; i < p_call - > arguments . size ( ) ; i + + ) {
if ( i > = p_par_types . size ( ) ) {
// Already on vararg place.
break ;
}
GDScriptParser : : DataType par_type = p_par_types [ i ] ;
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if ( par_type . is_hard_type ( ) & & p_call - > arguments [ i ] - > is_constant ) {
update_const_expression_builtin_type ( p_call - > arguments [ i ] , par_type , " pass " ) ;
}
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GDScriptParser : : DataType arg_type = p_call - > arguments [ i ] - > get_datatype ( ) ;
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if ( arg_type . is_variant ( ) | | ! arg_type . is_hard_type ( ) ) {
// Argument can be anything, so this is unsafe (unless the parameter is a hard variant).
if ( ! ( par_type . is_hard_type ( ) & & par_type . is_variant ( ) ) ) {
mark_node_unsafe ( p_call - > arguments [ i ] ) ;
}
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} else if ( par_type . is_hard_type ( ) & & ! is_type_compatible ( par_type , arg_type , true ) ) {
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// Supertypes are acceptable for dynamic compliance, but it's unsafe.
mark_node_unsafe ( p_call ) ;
if ( ! is_type_compatible ( arg_type , par_type ) ) {
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push_error ( vformat ( R " *(Invalid argument for " % s ( ) " function: argument %d should be " % s " but is " % s " .)* " ,
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p_call - > function_name , i + 1 , par_type . to_string ( ) , arg_type . to_string ( ) ) ,
p_call - > arguments [ i ] ) ;
}
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# ifdef DEBUG_ENABLED
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} else if ( par_type . kind = = GDScriptParser : : DataType : : BUILTIN & & par_type . builtin_type = = Variant : : INT & & arg_type . kind = = GDScriptParser : : DataType : : BUILTIN & & arg_type . builtin_type = = Variant : : FLOAT ) {
parser - > push_warning ( p_call , GDScriptWarning : : NARROWING_CONVERSION , p_call - > function_name ) ;
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# endif
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}
}
}
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# ifdef DEBUG_ENABLED
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void GDScriptAnalyzer : : is_shadowing ( GDScriptParser : : IdentifierNode * p_identifier , const String & p_context , const bool p_in_local_scope ) {
const StringName & name = p_identifier - > name ;
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GDScriptParser : : DataType base = parser - > current_class - > get_datatype ( ) ;
GDScriptParser : : ClassNode * base_class = base . class_type ;
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{
List < MethodInfo > gdscript_funcs ;
GDScriptLanguage : : get_singleton ( ) - > get_public_functions ( & gdscript_funcs ) ;
for ( MethodInfo & info : gdscript_funcs ) {
if ( info . name = = name ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_GLOBAL_IDENTIFIER , p_context , name , " built-in function " ) ;
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return ;
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}
}
if ( Variant : : has_utility_function ( name ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_GLOBAL_IDENTIFIER , p_context , name , " built-in function " ) ;
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return ;
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} else if ( ClassDB : : class_exists ( name ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_GLOBAL_IDENTIFIER , p_context , name , " global class " ) ;
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return ;
} else if ( GDScriptParser : : get_builtin_type ( name ) ! = Variant : : VARIANT_MAX ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_GLOBAL_IDENTIFIER , p_context , name , " built-in type " ) ;
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return ;
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}
}
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if ( p_in_local_scope ) {
while ( base_class ! = nullptr ) {
if ( base_class - > has_member ( name ) ) {
parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_VARIABLE , p_context , p_identifier - > name , base_class - > get_member ( name ) . get_type_name ( ) , itos ( base_class - > get_member ( name ) . get_line ( ) ) ) ;
return ;
}
base_class = base_class - > base_type . class_type ;
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}
}
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StringName parent = base . native_type ;
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while ( parent ! = StringName ( ) ) {
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ERR_FAIL_COND_MSG ( ! class_exists ( parent ) , " Non-existent native base class. " ) ;
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if ( ClassDB : : has_method ( parent , name , true ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_VARIABLE_BASE_CLASS , p_context , p_identifier - > name , " method " , parent ) ;
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return ;
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} else if ( ClassDB : : has_signal ( parent , name , true ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_VARIABLE_BASE_CLASS , p_context , p_identifier - > name , " signal " , parent ) ;
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return ;
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} else if ( ClassDB : : has_property ( parent , name , true ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_VARIABLE_BASE_CLASS , p_context , p_identifier - > name , " property " , parent ) ;
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return ;
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} else if ( ClassDB : : has_integer_constant ( parent , name , true ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_VARIABLE_BASE_CLASS , p_context , p_identifier - > name , " constant " , parent ) ;
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return ;
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} else if ( ClassDB : : has_enum ( parent , name , true ) ) {
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parser - > push_warning ( p_identifier , GDScriptWarning : : SHADOWED_VARIABLE_BASE_CLASS , p_context , p_identifier - > name , " enum " , parent ) ;
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return ;
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}
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parent = ClassDB : : get_parent_class ( parent ) ;
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}
}
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# endif
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GDScriptParser : : DataType GDScriptAnalyzer : : get_operation_type ( Variant : : Operator p_operation , const GDScriptParser : : DataType & p_a , bool & r_valid , const GDScriptParser : : Node * p_source ) {
// Unary version.
GDScriptParser : : DataType nil_type ;
nil_type . builtin_type = Variant : : NIL ;
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nil_type . type_source = GDScriptParser : : DataType : : ANNOTATED_INFERRED ;
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return get_operation_type ( p_operation , p_a , nil_type , r_valid , p_source ) ;
}
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GDScriptParser : : DataType GDScriptAnalyzer : : get_operation_type ( Variant : : Operator p_operation , const GDScriptParser : : DataType & p_a , const GDScriptParser : : DataType & p_b , bool & r_valid , const GDScriptParser : : Node * p_source ) {
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if ( p_operation = = Variant : : OP_AND | | p_operation = = Variant : : OP_OR ) {
// Those work for any type of argument and always return a boolean.
// They don't use the Variant operator since they have short-circuit semantics.
r_valid = true ;
GDScriptParser : : DataType result ;
result . type_source = GDScriptParser : : DataType : : ANNOTATED_INFERRED ;
result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : BOOL ;
return result ;
}
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Variant : : Type a_type = p_a . builtin_type ;
Variant : : Type b_type = p_b . builtin_type ;
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if ( p_a . kind = = GDScriptParser : : DataType : : ENUM ) {
if ( p_a . is_meta_type ) {
a_type = Variant : : DICTIONARY ;
} else {
a_type = Variant : : INT ;
}
}
if ( p_b . kind = = GDScriptParser : : DataType : : ENUM ) {
if ( p_b . is_meta_type ) {
b_type = Variant : : DICTIONARY ;
} else {
b_type = Variant : : INT ;
}
}
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GDScriptParser : : DataType result ;
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bool hard_operation = p_a . is_hard_type ( ) & & p_b . is_hard_type ( ) ;
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if ( p_operation = = Variant : : OP_ADD & & a_type = = Variant : : ARRAY & & b_type = = Variant : : ARRAY ) {
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if ( p_a . has_container_element_type ( ) & & p_b . has_container_element_type ( ) & & p_a . get_container_element_type ( ) = = p_b . get_container_element_type ( ) ) {
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r_valid = true ;
result = p_a ;
result . type_source = hard_operation ? GDScriptParser : : DataType : : ANNOTATED_INFERRED : GDScriptParser : : DataType : : INFERRED ;
return result ;
}
}
Variant : : ValidatedOperatorEvaluator op_eval = Variant : : get_validated_operator_evaluator ( p_operation , a_type , b_type ) ;
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bool validated = op_eval ! = nullptr ;
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if ( validated ) {
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r_valid = true ;
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result . type_source = hard_operation ? GDScriptParser : : DataType : : ANNOTATED_INFERRED : GDScriptParser : : DataType : : INFERRED ;
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result . kind = GDScriptParser : : DataType : : BUILTIN ;
result . builtin_type = Variant : : get_operator_return_type ( p_operation , a_type , b_type ) ;
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} else {
r_valid = ! hard_operation ;
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result . kind = GDScriptParser : : DataType : : VARIANT ;
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}
return result ;
}
// TODO: Add safe/unsafe return variable (for variant cases)
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bool GDScriptAnalyzer : : is_type_compatible ( const GDScriptParser : : DataType & p_target , const GDScriptParser : : DataType & p_source , bool p_allow_implicit_conversion , const GDScriptParser : : Node * p_source_node ) {
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// These return "true" so it doesn't affect users negatively.
ERR_FAIL_COND_V_MSG ( ! p_target . is_set ( ) , true , " Parser bug (please report): Trying to check compatibility of unset target type " ) ;
ERR_FAIL_COND_V_MSG ( ! p_source . is_set ( ) , true , " Parser bug (please report): Trying to check compatibility of unset value type " ) ;
if ( p_target . kind = = GDScriptParser : : DataType : : VARIANT ) {
// Variant can receive anything.
return true ;
}
if ( p_source . kind = = GDScriptParser : : DataType : : VARIANT ) {
// TODO: This is acceptable but unsafe. Make sure unsafe line is set.
return true ;
}
if ( p_target . kind = = GDScriptParser : : DataType : : BUILTIN ) {
bool valid = p_source . kind = = GDScriptParser : : DataType : : BUILTIN & & p_target . builtin_type = = p_source . builtin_type ;
if ( ! valid & & p_allow_implicit_conversion ) {
valid = Variant : : can_convert_strict ( p_source . builtin_type , p_target . builtin_type ) ;
}
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if ( ! valid & & p_target . builtin_type = = Variant : : INT & & p_source . kind = = GDScriptParser : : DataType : : ENUM & & ! p_source . is_meta_type ) {
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// Enum value is also integer.
valid = true ;
}
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if ( valid & & p_target . builtin_type = = Variant : : ARRAY & & p_source . builtin_type = = Variant : : ARRAY ) {
// Check the element type.
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if ( p_target . has_container_element_type ( ) & & p_source . has_container_element_type ( ) ) {
valid = p_target . get_container_element_type ( ) = = p_source . get_container_element_type ( ) ;
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}
}
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return valid ;
}
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if ( p_target . kind = = GDScriptParser : : DataType : : ENUM ) {
if ( p_source . kind = = GDScriptParser : : DataType : : BUILTIN & & p_source . builtin_type = = Variant : : INT ) {
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# ifdef DEBUG_ENABLED
if ( p_source_node ) {
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parser - > push_warning ( p_source_node , GDScriptWarning : : INT_AS_ENUM_WITHOUT_CAST ) ;
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}
# endif
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return true ;
}
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if ( p_source . kind = = GDScriptParser : : DataType : : ENUM ) {
if ( p_source . native_type = = p_target . native_type ) {
return true ;
}
}
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return false ;
}
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// From here on the target type is an object, so we have to test polymorphism.
if ( p_source . kind = = GDScriptParser : : DataType : : BUILTIN & & p_source . builtin_type = = Variant : : NIL ) {
// null is acceptable in object.
return true ;
}
StringName src_native ;
Ref < Script > src_script ;
const GDScriptParser : : ClassNode * src_class = nullptr ;
switch ( p_source . kind ) {
case GDScriptParser : : DataType : : NATIVE :
if ( p_target . kind ! = GDScriptParser : : DataType : : NATIVE ) {
// Non-native class cannot be supertype of native.
return false ;
}
if ( p_source . is_meta_type ) {
src_native = GDScriptNativeClass : : get_class_static ( ) ;
} else {
src_native = p_source . native_type ;
}
break ;
case GDScriptParser : : DataType : : SCRIPT :
if ( p_target . kind = = GDScriptParser : : DataType : : CLASS ) {
// A script type cannot be a subtype of a GDScript class.
return false ;
}
if ( p_source . is_meta_type ) {
src_native = p_source . script_type - > get_class_name ( ) ;
} else {
src_script = p_source . script_type ;
src_native = src_script - > get_instance_base_type ( ) ;
}
break ;
case GDScriptParser : : DataType : : CLASS :
if ( p_source . is_meta_type ) {
src_native = GDScript : : get_class_static ( ) ;
} else {
src_class = p_source . class_type ;
const GDScriptParser : : ClassNode * base = src_class ;
while ( base - > base_type . kind = = GDScriptParser : : DataType : : CLASS ) {
base = base - > base_type . class_type ;
}
src_native = base - > base_type . native_type ;
src_script = base - > base_type . script_type ;
}
break ;
case GDScriptParser : : DataType : : VARIANT :
case GDScriptParser : : DataType : : BUILTIN :
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case GDScriptParser : : DataType : : ENUM :
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case GDScriptParser : : DataType : : RESOLVING :
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case GDScriptParser : : DataType : : UNRESOLVED :
break ; // Already solved before.
}
switch ( p_target . kind ) {
case GDScriptParser : : DataType : : NATIVE : {
if ( p_target . is_meta_type ) {
return ClassDB : : is_parent_class ( src_native , GDScriptNativeClass : : get_class_static ( ) ) ;
}
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return ClassDB : : is_parent_class ( src_native , p_target . native_type ) ;
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}
case GDScriptParser : : DataType : : SCRIPT :
if ( p_target . is_meta_type ) {
return ClassDB : : is_parent_class ( src_native , p_target . script_type - > get_class_name ( ) ) ;
}
while ( src_script . is_valid ( ) ) {
if ( src_script = = p_target . script_type ) {
return true ;
}
src_script = src_script - > get_base_script ( ) ;
}
return false ;
case GDScriptParser : : DataType : : CLASS :
if ( p_target . is_meta_type ) {
return ClassDB : : is_parent_class ( src_native , GDScript : : get_class_static ( ) ) ;
}
while ( src_class ! = nullptr ) {
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if ( src_class = = p_target . class_type | | src_class - > fqcn = = p_target . class_type - > fqcn ) {
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return true ;
}
src_class = src_class - > base_type . class_type ;
}
return false ;
case GDScriptParser : : DataType : : VARIANT :
case GDScriptParser : : DataType : : BUILTIN :
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case GDScriptParser : : DataType : : ENUM :
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case GDScriptParser : : DataType : : RESOLVING :
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case GDScriptParser : : DataType : : UNRESOLVED :
break ; // Already solved before.
}
return false ;
}
void GDScriptAnalyzer : : push_error ( const String & p_message , const GDScriptParser : : Node * p_origin ) {
mark_node_unsafe ( p_origin ) ;
parser - > push_error ( p_message , p_origin ) ;
}
void GDScriptAnalyzer : : mark_node_unsafe ( const GDScriptParser : : Node * p_node ) {
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# ifdef DEBUG_ENABLED
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if ( p_node = = nullptr ) {
return ;
}
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for ( int i = p_node - > start_line ; i < = p_node - > end_line ; i + + ) {
parser - > unsafe_lines . insert ( i ) ;
}
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# endif
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}
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void GDScriptAnalyzer : : downgrade_node_type_source ( GDScriptParser : : Node * p_node ) {
GDScriptParser : : IdentifierNode * identifier = nullptr ;
if ( p_node - > type = = GDScriptParser : : Node : : IDENTIFIER ) {
identifier = static_cast < GDScriptParser : : IdentifierNode * > ( p_node ) ;
} else if ( p_node - > type = = GDScriptParser : : Node : : SUBSCRIPT ) {
GDScriptParser : : SubscriptNode * subscript = static_cast < GDScriptParser : : SubscriptNode * > ( p_node ) ;
if ( subscript - > is_attribute ) {
identifier = subscript - > attribute ;
}
}
if ( identifier = = nullptr ) {
return ;
}
GDScriptParser : : Node * source = nullptr ;
switch ( identifier - > source ) {
case GDScriptParser : : IdentifierNode : : MEMBER_VARIABLE : {
source = identifier - > variable_source ;
} break ;
case GDScriptParser : : IdentifierNode : : FUNCTION_PARAMETER : {
source = identifier - > parameter_source ;
} break ;
case GDScriptParser : : IdentifierNode : : LOCAL_VARIABLE : {
source = identifier - > variable_source ;
} break ;
case GDScriptParser : : IdentifierNode : : LOCAL_ITERATOR : {
source = identifier - > bind_source ;
} break ;
default :
break ;
}
if ( source = = nullptr ) {
return ;
}
GDScriptParser : : DataType datatype ;
datatype . kind = GDScriptParser : : DataType : : VARIANT ;
source - > set_datatype ( datatype ) ;
}
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void GDScriptAnalyzer : : mark_lambda_use_self ( ) {
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GDScriptParser : : LambdaNode * lambda = current_lambda ;
while ( lambda ! = nullptr ) {
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lambda - > use_self = true ;
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lambda = lambda - > parent_lambda ;
}
}
void GDScriptAnalyzer : : resolve_pending_lambda_bodies ( ) {
if ( pending_body_resolution_lambdas . is_empty ( ) ) {
return ;
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}
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GDScriptParser : : LambdaNode * previous_lambda = current_lambda ;
List < GDScriptParser : : LambdaNode * > lambdas = pending_body_resolution_lambdas ;
pending_body_resolution_lambdas . clear ( ) ;
for ( GDScriptParser : : LambdaNode * lambda : lambdas ) {
current_lambda = lambda ;
resolve_function_body ( lambda - > function , true ) ;
int captures_amount = lambda - > captures . size ( ) ;
if ( captures_amount > 0 ) {
// Create space for lambda parameters.
// At the beginning to not mess with optional parameters.
int param_count = lambda - > function - > parameters . size ( ) ;
lambda - > function - > parameters . resize ( param_count + captures_amount ) ;
for ( int i = param_count - 1 ; i > = 0 ; i - - ) {
lambda - > function - > parameters . write [ i + captures_amount ] = lambda - > function - > parameters [ i ] ;
lambda - > function - > parameters_indices [ lambda - > function - > parameters [ i ] - > identifier - > name ] = i + captures_amount ;
}
// Add captures as extra parameters at the beginning.
for ( int i = 0 ; i < lambda - > captures . size ( ) ; i + + ) {
GDScriptParser : : IdentifierNode * capture = lambda - > captures [ i ] ;
GDScriptParser : : ParameterNode * capture_param = parser - > alloc_node < GDScriptParser : : ParameterNode > ( ) ;
capture_param - > identifier = capture ;
capture_param - > usages = capture - > usages ;
capture_param - > set_datatype ( capture - > get_datatype ( ) ) ;
lambda - > function - > parameters . write [ i ] = capture_param ;
lambda - > function - > parameters_indices [ capture - > name ] = i ;
}
}
}
current_lambda = previous_lambda ;
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}
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bool GDScriptAnalyzer : : class_exists ( const StringName & p_class ) const {
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return ClassDB : : class_exists ( p_class ) & & ClassDB : : is_class_exposed ( p_class ) ;
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}
Ref < GDScriptParserRef > GDScriptAnalyzer : : get_parser_for ( const String & p_path ) {
Ref < GDScriptParserRef > ref ;
if ( depended_parsers . has ( p_path ) ) {
ref = depended_parsers [ p_path ] ;
} else {
Error err = OK ;
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ref = GDScriptCache : : get_parser ( p_path , GDScriptParserRef : : EMPTY , err , parser - > script_path ) ;
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if ( ref . is_valid ( ) ) {
depended_parsers [ p_path ] = ref ;
}
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}
return ref ;
}
Error GDScriptAnalyzer : : resolve_inheritance ( ) {
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return resolve_class_inheritance ( parser - > head , true ) ;
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}
Error GDScriptAnalyzer : : resolve_interface ( ) {
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resolve_class_interface ( parser - > head , true ) ;
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return parser - > errors . is_empty ( ) ? OK : ERR_PARSE_ERROR ;
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}
Error GDScriptAnalyzer : : resolve_body ( ) {
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resolve_class_body ( parser - > head , true ) ;
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return parser - > errors . is_empty ( ) ? OK : ERR_PARSE_ERROR ;
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}
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Error GDScriptAnalyzer : : resolve_dependencies ( ) {
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for ( KeyValue < String , Ref < GDScriptParserRef > > & K : depended_parsers ) {
if ( K . value . is_null ( ) ) {
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return ERR_PARSE_ERROR ;
}
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K . value - > raise_status ( GDScriptParserRef : : INHERITANCE_SOLVED ) ;
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}
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return parser - > errors . is_empty ( ) ? OK : ERR_PARSE_ERROR ;
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}
Error GDScriptAnalyzer : : analyze ( ) {
parser - > errors . clear ( ) ;
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Error err = OK ;
err = resolve_inheritance ( ) ;
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if ( err ) {
return err ;
}
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// Apply annotations.
for ( GDScriptParser : : AnnotationNode * & E : parser - > head - > annotations ) {
resolve_annotation ( E ) ;
E - > apply ( parser , parser - > head ) ;
}
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resolve_interface ( ) ;
resolve_body ( ) ;
if ( ! parser - > errors . is_empty ( ) ) {
return ERR_PARSE_ERROR ;
}
return resolve_dependencies ( ) ;
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}
GDScriptAnalyzer : : GDScriptAnalyzer ( GDScriptParser * p_parser ) {
parser = p_parser ;
}