a7f49ac9a1
Happy new year to the wonderful Godot community! We're starting a new decade with a well-established, non-profit, free and open source game engine, and tons of further improvements in the pipeline from hundreds of contributors. Godot will keep getting better, and we're looking forward to all the games that the community will keep developing and releasing with it.
527 lines
21 KiB
C++
527 lines
21 KiB
C++
/*************************************************************************/
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/* gdscript.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef GDSCRIPT_H
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#define GDSCRIPT_H
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#include "core/io/resource_loader.h"
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#include "core/io/resource_saver.h"
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#include "core/script_language.h"
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#include "gdscript_function.h"
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class GDScriptNativeClass : public Reference {
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GDCLASS(GDScriptNativeClass, Reference);
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StringName name;
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protected:
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bool _get(const StringName &p_name, Variant &r_ret) const;
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static void _bind_methods();
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public:
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_FORCE_INLINE_ const StringName &get_name() const { return name; }
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Variant _new();
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Object *instance();
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GDScriptNativeClass(const StringName &p_name);
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};
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class GDScript : public Script {
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GDCLASS(GDScript, Script);
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bool tool;
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bool valid;
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struct MemberInfo {
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int index;
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StringName setter;
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StringName getter;
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MultiplayerAPI::RPCMode rpc_mode;
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GDScriptDataType data_type;
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};
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friend class GDScriptInstance;
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friend class GDScriptFunction;
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friend class GDScriptCompiler;
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friend class GDScriptFunctions;
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friend class GDScriptLanguage;
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Variant _static_ref; //used for static call
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Ref<GDScriptNativeClass> native;
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Ref<GDScript> base;
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GDScript *_base; //fast pointer access
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GDScript *_owner; //for subclasses
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Set<StringName> members; //members are just indices to the instanced script.
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Map<StringName, Variant> constants;
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Map<StringName, GDScriptFunction *> member_functions;
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Map<StringName, MemberInfo> member_indices; //members are just indices to the instanced script.
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Map<StringName, Ref<GDScript> > subclasses;
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Map<StringName, Vector<StringName> > _signals;
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#ifdef TOOLS_ENABLED
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Map<StringName, int> member_lines;
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Map<StringName, Variant> member_default_values;
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List<PropertyInfo> members_cache;
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Map<StringName, Variant> member_default_values_cache;
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Ref<GDScript> base_cache;
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Set<ObjectID> inheriters_cache;
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bool source_changed_cache;
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bool placeholder_fallback_enabled;
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void _update_exports_values(Map<StringName, Variant> &values, List<PropertyInfo> &propnames);
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#endif
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Map<StringName, PropertyInfo> member_info;
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GDScriptFunction *initializer; //direct pointer to _init , faster to locate
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int subclass_count;
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Set<Object *> instances;
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//exported members
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String source;
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String path;
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String name;
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SelfList<GDScript> script_list;
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GDScriptInstance *_create_instance(const Variant **p_args, int p_argcount, Object *p_owner, bool p_isref, Variant::CallError &r_error);
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void _set_subclass_path(Ref<GDScript> &p_sc, const String &p_path);
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#ifdef TOOLS_ENABLED
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Set<PlaceHolderScriptInstance *> placeholders;
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//void _update_placeholder(PlaceHolderScriptInstance *p_placeholder);
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virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder);
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#endif
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#ifdef DEBUG_ENABLED
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Map<ObjectID, List<Pair<StringName, Variant> > > pending_reload_state;
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#endif
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bool _update_exports();
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protected:
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bool _get(const StringName &p_name, Variant &r_ret) const;
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bool _set(const StringName &p_name, const Variant &p_value);
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void _get_property_list(List<PropertyInfo> *p_properties) const;
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Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
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//void call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount);
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static void _bind_methods();
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public:
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virtual bool is_valid() const { return valid; }
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const Map<StringName, Ref<GDScript> > &get_subclasses() const { return subclasses; }
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const Map<StringName, Variant> &get_constants() const { return constants; }
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const Set<StringName> &get_members() const { return members; }
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const GDScriptDataType &get_member_type(const StringName &p_member) const {
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CRASH_COND(!member_indices.has(p_member));
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return member_indices[p_member].data_type;
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}
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const Map<StringName, GDScriptFunction *> &get_member_functions() const { return member_functions; }
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const Ref<GDScriptNativeClass> &get_native() const { return native; }
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const String &get_script_class_name() const { return name; }
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virtual bool has_script_signal(const StringName &p_signal) const;
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virtual void get_script_signal_list(List<MethodInfo> *r_signals) const;
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bool is_tool() const { return tool; }
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Ref<GDScript> get_base() const;
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const Map<StringName, MemberInfo> &debug_get_member_indices() const { return member_indices; }
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const Map<StringName, GDScriptFunction *> &debug_get_member_functions() const; //this is debug only
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StringName debug_get_member_by_index(int p_idx) const;
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Variant _new(const Variant **p_args, int p_argcount, Variant::CallError &r_error);
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virtual bool can_instance() const;
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virtual Ref<Script> get_base_script() const;
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virtual StringName get_instance_base_type() const; // this may not work in all scripts, will return empty if so
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virtual ScriptInstance *instance_create(Object *p_this);
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virtual PlaceHolderScriptInstance *placeholder_instance_create(Object *p_this);
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virtual bool instance_has(const Object *p_this) const;
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virtual bool has_source_code() const;
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virtual String get_source_code() const;
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virtual void set_source_code(const String &p_code);
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virtual void update_exports();
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virtual Error reload(bool p_keep_state = false);
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void set_script_path(const String &p_path) { path = p_path; } //because subclasses need a path too...
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Error load_source_code(const String &p_path);
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Error load_byte_code(const String &p_path);
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Vector<uint8_t> get_as_byte_code() const;
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bool get_property_default_value(const StringName &p_property, Variant &r_value) const;
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virtual void get_script_method_list(List<MethodInfo> *p_list) const;
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virtual bool has_method(const StringName &p_method) const;
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virtual MethodInfo get_method_info(const StringName &p_method) const;
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virtual void get_script_property_list(List<PropertyInfo> *p_list) const;
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virtual ScriptLanguage *get_language() const;
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virtual int get_member_line(const StringName &p_member) const {
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#ifdef TOOLS_ENABLED
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if (member_lines.has(p_member))
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return member_lines[p_member];
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else
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#endif
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return -1;
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}
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virtual void get_constants(Map<StringName, Variant> *p_constants);
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virtual void get_members(Set<StringName> *p_members);
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#ifdef TOOLS_ENABLED
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virtual bool is_placeholder_fallback_enabled() const { return placeholder_fallback_enabled; }
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#endif
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GDScript();
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~GDScript();
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};
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class GDScriptInstance : public ScriptInstance {
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friend class GDScript;
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friend class GDScriptFunction;
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friend class GDScriptFunctions;
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friend class GDScriptCompiler;
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Object *owner;
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Ref<GDScript> script;
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#ifdef DEBUG_ENABLED
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Map<StringName, int> member_indices_cache; //used only for hot script reloading
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#endif
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Vector<Variant> members;
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bool base_ref;
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void _ml_call_reversed(GDScript *sptr, const StringName &p_method, const Variant **p_args, int p_argcount);
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public:
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virtual Object *get_owner() { return owner; }
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virtual bool set(const StringName &p_name, const Variant &p_value);
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virtual bool get(const StringName &p_name, Variant &r_ret) const;
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virtual void get_property_list(List<PropertyInfo> *p_properties) const;
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virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = NULL) const;
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virtual void get_method_list(List<MethodInfo> *p_list) const;
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virtual bool has_method(const StringName &p_method) const;
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virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
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virtual void call_multilevel(const StringName &p_method, const Variant **p_args, int p_argcount);
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virtual void call_multilevel_reversed(const StringName &p_method, const Variant **p_args, int p_argcount);
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Variant debug_get_member_by_index(int p_idx) const { return members[p_idx]; }
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virtual void notification(int p_notification);
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String to_string(bool *r_valid);
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virtual Ref<Script> get_script() const;
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virtual ScriptLanguage *get_language();
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void set_path(const String &p_path);
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void reload_members();
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virtual MultiplayerAPI::RPCMode get_rpc_mode(const StringName &p_method) const;
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virtual MultiplayerAPI::RPCMode get_rset_mode(const StringName &p_variable) const;
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GDScriptInstance();
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~GDScriptInstance();
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};
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#ifdef DEBUG_ENABLED
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struct GDScriptWarning {
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enum Code {
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UNASSIGNED_VARIABLE, // Variable used but never assigned
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UNASSIGNED_VARIABLE_OP_ASSIGN, // Variable never assigned but used in an assignment operation (+=, *=, etc)
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UNUSED_VARIABLE, // Local variable is declared but never used
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SHADOWED_VARIABLE, // Variable name shadowed by other variable
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UNUSED_CLASS_VARIABLE, // Class variable is declared but never used in the file
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UNUSED_ARGUMENT, // Function argument is never used
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UNREACHABLE_CODE, // Code after a return statement
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STANDALONE_EXPRESSION, // Expression not assigned to a variable
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VOID_ASSIGNMENT, // Function returns void but it's assigned to a variable
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NARROWING_CONVERSION, // Float value into an integer slot, precision is lost
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FUNCTION_MAY_YIELD, // Typed assign of function call that yields (it may return a function state)
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VARIABLE_CONFLICTS_FUNCTION, // Variable has the same name of a function
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FUNCTION_CONFLICTS_VARIABLE, // Function has the same name of a variable
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FUNCTION_CONFLICTS_CONSTANT, // Function has the same name of a constant
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INCOMPATIBLE_TERNARY, // Possible values of a ternary if are not mutually compatible
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UNUSED_SIGNAL, // Signal is defined but never emitted
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RETURN_VALUE_DISCARDED, // Function call returns something but the value isn't used
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PROPERTY_USED_AS_FUNCTION, // Function not found, but there's a property with the same name
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CONSTANT_USED_AS_FUNCTION, // Function not found, but there's a constant with the same name
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FUNCTION_USED_AS_PROPERTY, // Property not found, but there's a function with the same name
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INTEGER_DIVISION, // Integer divide by integer, decimal part is discarded
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UNSAFE_PROPERTY_ACCESS, // Property not found in the detected type (but can be in subtypes)
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UNSAFE_METHOD_ACCESS, // Function not found in the detected type (but can be in subtypes)
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UNSAFE_CAST, // Cast used in an unknown type
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UNSAFE_CALL_ARGUMENT, // Function call argument is of a supertype of the require argument
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DEPRECATED_KEYWORD, // The keyword is deprecated and should be replaced
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WARNING_MAX,
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} code;
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Vector<String> symbols;
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int line;
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String get_name() const;
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String get_message() const;
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static String get_name_from_code(Code p_code);
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static Code get_code_from_name(const String &p_name);
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GDScriptWarning() :
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code(WARNING_MAX),
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line(-1) {}
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};
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#endif // DEBUG_ENABLED
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class GDScriptLanguage : public ScriptLanguage {
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static GDScriptLanguage *singleton;
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Variant *_global_array;
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Vector<Variant> global_array;
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Map<StringName, int> globals;
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Map<StringName, Variant> named_globals;
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struct CallLevel {
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Variant *stack;
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GDScriptFunction *function;
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GDScriptInstance *instance;
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int *ip;
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int *line;
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};
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int _debug_parse_err_line;
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String _debug_parse_err_file;
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String _debug_error;
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int _debug_call_stack_pos;
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int _debug_max_call_stack;
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CallLevel *_call_stack;
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void _add_global(const StringName &p_name, const Variant &p_value);
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friend class GDScriptInstance;
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Mutex *lock;
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friend class GDScript;
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SelfList<GDScript>::List script_list;
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friend class GDScriptFunction;
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SelfList<GDScriptFunction>::List function_list;
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bool profiling;
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uint64_t script_frame_time;
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public:
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int calls;
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bool debug_break(const String &p_error, bool p_allow_continue = true);
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bool debug_break_parse(const String &p_file, int p_line, const String &p_error);
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_FORCE_INLINE_ void enter_function(GDScriptInstance *p_instance, GDScriptFunction *p_function, Variant *p_stack, int *p_ip, int *p_line) {
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if (Thread::get_main_id() != Thread::get_caller_id())
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return; //no support for other threads than main for now
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if (ScriptDebugger::get_singleton()->get_lines_left() > 0 && ScriptDebugger::get_singleton()->get_depth() >= 0)
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ScriptDebugger::get_singleton()->set_depth(ScriptDebugger::get_singleton()->get_depth() + 1);
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if (_debug_call_stack_pos >= _debug_max_call_stack) {
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//stack overflow
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_debug_error = "Stack Overflow (Stack Size: " + itos(_debug_max_call_stack) + ")";
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ScriptDebugger::get_singleton()->debug(this);
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return;
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}
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_call_stack[_debug_call_stack_pos].stack = p_stack;
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_call_stack[_debug_call_stack_pos].instance = p_instance;
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_call_stack[_debug_call_stack_pos].function = p_function;
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_call_stack[_debug_call_stack_pos].ip = p_ip;
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_call_stack[_debug_call_stack_pos].line = p_line;
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_debug_call_stack_pos++;
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}
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_FORCE_INLINE_ void exit_function() {
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if (Thread::get_main_id() != Thread::get_caller_id())
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return; //no support for other threads than main for now
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if (ScriptDebugger::get_singleton()->get_lines_left() > 0 && ScriptDebugger::get_singleton()->get_depth() >= 0)
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ScriptDebugger::get_singleton()->set_depth(ScriptDebugger::get_singleton()->get_depth() - 1);
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if (_debug_call_stack_pos == 0) {
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_debug_error = "Stack Underflow (Engine Bug)";
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ScriptDebugger::get_singleton()->debug(this);
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return;
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}
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_debug_call_stack_pos--;
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}
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virtual Vector<StackInfo> debug_get_current_stack_info() {
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if (Thread::get_main_id() != Thread::get_caller_id())
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return Vector<StackInfo>();
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Vector<StackInfo> csi;
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csi.resize(_debug_call_stack_pos);
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for (int i = 0; i < _debug_call_stack_pos; i++) {
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csi.write[_debug_call_stack_pos - i - 1].line = _call_stack[i].line ? *_call_stack[i].line : 0;
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if (_call_stack[i].function) {
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csi.write[_debug_call_stack_pos - i - 1].func = _call_stack[i].function->get_name();
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csi.write[_debug_call_stack_pos - i - 1].file = _call_stack[i].function->get_script()->get_path();
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}
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}
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return csi;
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}
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struct {
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StringName _init;
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StringName _notification;
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StringName _set;
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StringName _get;
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StringName _get_property_list;
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StringName _script_source;
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} strings;
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_FORCE_INLINE_ int get_global_array_size() const { return global_array.size(); }
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_FORCE_INLINE_ Variant *get_global_array() { return _global_array; }
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_FORCE_INLINE_ const Map<StringName, int> &get_global_map() const { return globals; }
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_FORCE_INLINE_ const Map<StringName, Variant> &get_named_globals_map() const { return named_globals; }
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_FORCE_INLINE_ static GDScriptLanguage *get_singleton() { return singleton; }
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virtual String get_name() const;
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/* LANGUAGE FUNCTIONS */
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virtual void init();
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virtual String get_type() const;
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virtual String get_extension() const;
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virtual Error execute_file(const String &p_path);
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virtual void finish();
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/* EDITOR FUNCTIONS */
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virtual void get_reserved_words(List<String> *p_words) const;
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virtual void get_comment_delimiters(List<String> *p_delimiters) const;
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virtual void get_string_delimiters(List<String> *p_delimiters) const;
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virtual String _get_processed_template(const String &p_template, const String &p_base_class_name) const;
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virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
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virtual bool is_using_templates();
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virtual void make_template(const String &p_class_name, const String &p_base_class_name, Ref<Script> &p_script);
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virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = NULL, List<ScriptLanguage::Warning> *r_warnings = NULL, Set<int> *r_safe_lines = NULL) const;
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virtual Script *create_script() const;
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virtual bool has_named_classes() const;
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virtual bool supports_builtin_mode() const;
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virtual bool can_inherit_from_file() { return true; }
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virtual int find_function(const String &p_function, const String &p_code) const;
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virtual String make_function(const String &p_class, const String &p_name, const PoolStringArray &p_args) const;
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virtual Error complete_code(const String &p_code, const String &p_path, Object *p_owner, List<ScriptCodeCompletionOption> *r_options, bool &r_forced, String &r_call_hint);
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#ifdef TOOLS_ENABLED
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virtual Error lookup_code(const String &p_code, const String &p_symbol, const String &p_path, Object *p_owner, LookupResult &r_result);
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#endif
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virtual String _get_indentation() const;
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virtual void auto_indent_code(String &p_code, int p_from_line, int p_to_line) const;
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virtual void add_global_constant(const StringName &p_variable, const Variant &p_value);
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virtual void add_named_global_constant(const StringName &p_name, const Variant &p_value);
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virtual void remove_named_global_constant(const StringName &p_name);
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/* DEBUGGER FUNCTIONS */
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virtual String debug_get_error() const;
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virtual int debug_get_stack_level_count() const;
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virtual int debug_get_stack_level_line(int p_level) const;
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virtual String debug_get_stack_level_function(int p_level) const;
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virtual String debug_get_stack_level_source(int p_level) const;
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virtual void debug_get_stack_level_locals(int p_level, List<String> *p_locals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
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virtual void debug_get_stack_level_members(int p_level, List<String> *p_members, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
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virtual ScriptInstance *debug_get_stack_level_instance(int p_level);
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virtual void debug_get_globals(List<String> *p_globals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
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virtual String debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems = -1, int p_max_depth = -1);
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virtual void reload_all_scripts();
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virtual void reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload);
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virtual void frame();
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virtual void get_public_functions(List<MethodInfo> *p_functions) const;
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virtual void get_public_constants(List<Pair<String, Variant> > *p_constants) const;
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virtual void profiling_start();
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virtual void profiling_stop();
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virtual int profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max);
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virtual int profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max);
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/* LOADER FUNCTIONS */
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virtual void get_recognized_extensions(List<String> *p_extensions) const;
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/* GLOBAL CLASSES */
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virtual bool handles_global_class_type(const String &p_type) const;
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virtual String get_global_class_name(const String &p_path, String *r_base_type = NULL, String *r_icon_path = NULL) const;
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GDScriptLanguage();
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~GDScriptLanguage();
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};
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class ResourceFormatLoaderGDScript : public ResourceFormatLoader {
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public:
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virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
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virtual void get_recognized_extensions(List<String> *p_extensions) const;
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virtual bool handles_type(const String &p_type) const;
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virtual String get_resource_type(const String &p_path) const;
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virtual void get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types = false);
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};
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class ResourceFormatSaverGDScript : public ResourceFormatSaver {
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public:
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virtual Error save(const String &p_path, const RES &p_resource, uint32_t p_flags = 0);
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virtual void get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const;
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virtual bool recognize(const RES &p_resource) const;
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};
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#endif // GDSCRIPT_H
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