d8223ffa75
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
348 lines
9.9 KiB
C++
348 lines
9.9 KiB
C++
/*************************************************************************/
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/* method_bind.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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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 METHOD_BIND_H
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#define METHOD_BIND_H
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#include "list.h"
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#include "variant.h"
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#include "object.h"
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#include <stdio.h>
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#include "method_ptrcall.h"
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/**
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@author Juan Linietsky <reduzio@gmail.com>
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*/
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#ifdef DEBUG_ENABLED
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#define DEBUG_METHODS_ENABLED
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#endif
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enum MethodFlags {
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METHOD_FLAG_NORMAL=1,
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METHOD_FLAG_EDITOR=2,
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METHOD_FLAG_NOSCRIPT=4,
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METHOD_FLAG_CONST=8,
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METHOD_FLAG_REVERSE=16, // used for events
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METHOD_FLAG_VIRTUAL=32,
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METHOD_FLAG_FROM_SCRIPT=64,
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METHOD_FLAGS_DEFAULT=METHOD_FLAG_NORMAL,
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};
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template<class T>
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struct VariantCaster {
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static _FORCE_INLINE_ T cast(const Variant& p_variant) {
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return p_variant;
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}
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};
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template<class T>
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struct VariantCaster<T&> {
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static _FORCE_INLINE_ T cast(const Variant& p_variant) {
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return p_variant;
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}
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};
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template<class T>
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struct VariantCaster<const T&> {
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static _FORCE_INLINE_ T cast(const Variant& p_variant) {
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return p_variant;
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}
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};
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#define _VC( m_idx )\
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(VariantCaster<P##m_idx>::cast( (m_idx-1)>=p_arg_count?get_default_argument(m_idx-1):*p_args[m_idx-1] ))
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//SIMPLE_NUMERIC_TYPE is used to avoid a warning on Variant::get_type_for
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#ifdef PTRCALL_ENABLED
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#define VARIANT_ENUM_CAST( m_enum ) \
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SIMPLE_NUMERIC_TYPE( m_enum );\
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template<> \
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struct VariantCaster<m_enum> {\
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\
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static _FORCE_INLINE_ m_enum cast(const Variant& p_variant) {\
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return (m_enum)p_variant.operator int();\
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}\
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};\
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template<>\
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struct PtrToArg< m_enum > {\
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_FORCE_INLINE_ static m_enum convert(const void* p_ptr) {\
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return m_enum(*reinterpret_cast<const int*>(p_ptr));\
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}\
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_FORCE_INLINE_ static void encode(m_enum p_val,const void* p_ptr) {\
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*(int*)p_ptr=p_val;\
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}\
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};
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#else
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#define VARIANT_ENUM_CAST( m_enum ) \
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SIMPLE_NUMERIC_TYPE( m_enum );\
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template<> \
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struct VariantCaster<m_enum> {\
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\
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static _FORCE_INLINE_ m_enum cast(const Variant& p_variant) {\
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return (m_enum)p_variant.operator int();\
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}\
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};
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#endif
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#define CHECK_ARG(m_arg)\
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if ((m_arg-1)<p_arg_count) {\
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Variant::Type argtype=get_argument_type(m_arg-1);\
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if (!Variant::can_convert_strict(p_args[m_arg-1]->get_type(),argtype)) {\
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r_error.error=Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;\
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r_error.argument=m_arg-1;\
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r_error.expected=argtype;\
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return Variant();\
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}\
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}
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#define CHECK_NOARG(m_arg)\
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{\
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if (p_arg##m_arg.get_type()!=Variant::NIL) {\
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if (r_argerror) *r_argerror=(m_arg-1);\
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return CALL_ERROR_EXTRA_ARGUMENT;\
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}\
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}
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// some helpers
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VARIANT_ENUM_CAST( Vector3::Axis );
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VARIANT_ENUM_CAST( Image::Format );
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VARIANT_ENUM_CAST( Error );
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VARIANT_ENUM_CAST( wchar_t );
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VARIANT_ENUM_CAST( Margin );
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VARIANT_ENUM_CAST( Orientation );
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VARIANT_ENUM_CAST( HAlign );
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class MethodBind {
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int method_id;
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uint32_t hint_flags;
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StringName name;
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Vector<Variant> default_arguments;
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int default_argument_count;
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int argument_count;
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#ifdef DEBUG_METHODS_ENABLED
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Vector<StringName> arg_names;
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Variant::Type *argument_types;
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StringName ret_type;
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#endif
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bool _const;
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protected:
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void _set_const(bool p_const);
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#ifdef DEBUG_METHODS_ENABLED
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virtual Variant::Type _gen_argument_type(int p_arg) const=0;
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void _generate_argument_types(int p_count);
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void set_argument_types(Variant::Type *p_types) { argument_types=p_types; }
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#endif
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void set_argument_count(int p_count) { argument_count=p_count; }
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public:
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Vector<Variant> get_default_arguments() const { return default_arguments; }
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_FORCE_INLINE_ int get_default_argument_count() const { return default_argument_count; }
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_FORCE_INLINE_ Variant has_default_argument(int p_arg) const {
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int idx=argument_count-p_arg-1;
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if (idx<0 || idx>=default_arguments.size())
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return false;
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else
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return true;
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}
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_FORCE_INLINE_ Variant get_default_argument(int p_arg) const {
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int idx=argument_count-p_arg-1;
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if (idx<0 || idx>=default_arguments.size())
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return Variant();
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else
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return default_arguments[idx];
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}
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#ifdef DEBUG_METHODS_ENABLED
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_FORCE_INLINE_ void set_return_type(const StringName& p_type) { ret_type=p_type; }
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_FORCE_INLINE_ StringName get_return_type() const { return ret_type; }
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_FORCE_INLINE_ Variant::Type get_argument_type(int p_argument) const {
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ERR_FAIL_COND_V(p_argument<-1 || p_argument>argument_count,Variant::NIL);
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return argument_types[p_argument+1];
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}
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PropertyInfo get_argument_info(int p_argument) const;
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void set_argument_names(const Vector<StringName>& p_names);
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Vector<StringName> get_argument_names() const;
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#endif
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void set_hint_flags(uint32_t p_hint) { hint_flags=p_hint; }
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uint32_t get_hint_flags() const { return hint_flags|(is_const()?METHOD_FLAG_CONST:0); }
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virtual String get_instance_type() const=0;
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_FORCE_INLINE_ int get_argument_count() const { return argument_count; };
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#if 0
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_FORCE_INLINE_ Variant call_safe(const Variant** p_args,int p_arg_count, Variant::CallError& r_error) {
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r_error.error=Variant::CallError::CALL_OK;
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check_call( p_args, &errorarg );
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if (!err)
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return call(p_object, VARIANT_ARG_PASS );
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VARIANT_ARGPTRS
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String errstr;
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String methodname = get_instance_type()+"::"+name;
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if (err==CALL_ERROR_ARGUMENT_TYPE) {
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errstr="Invalid Argument to call: '"+methodname+"'. Cannot convert argument "+itos(errorarg+1)+" from "+Variant::get_type_name(get_argument_type(errorarg))+" to "+Variant::get_type_name(argptr[errorarg]->get_type())+".";
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}
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if (err==CALL_ERROR_EXTRA_ARGUMENT) {
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errstr="Invalid call. Member function '"+methodname+"' takes "+itos(get_argument_count())+" argument, but argument "+itos(errorarg+1)+" was received.";
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}
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ERR_PRINT(errstr.ascii().get_data());
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return Variant();
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}
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#endif
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virtual Variant call(Object* p_object,const Variant** p_args,int p_arg_count, Variant::CallError& r_error)=0;
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#ifdef PTRCALL_ENABLED
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virtual void ptrcall(Object* p_object,const void** p_args,void* r_ret)=0;
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#endif
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StringName get_name() const;
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void set_name(const StringName& p_name);
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_FORCE_INLINE_ int get_method_id() const { return method_id; }
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_FORCE_INLINE_ bool is_const() const { return _const; }
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void set_default_arguments(const Vector<Variant>& p_defargs);
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MethodBind();
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virtual ~MethodBind();
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};
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template<class T>
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class MethodBindNative : public MethodBind {
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public:
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typedef Variant (T::*NativeCall)(const Variant**,int ,Variant::CallError &);
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protected:
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NativeCall call_method;
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public:
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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return Variant::NIL;
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}
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virtual Variant call(Object* p_object,const Variant** p_args,int p_arg_count, Variant::CallError& r_error) {
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T* instance=static_cast<T*>(p_object);
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return (instance->*call_method)(p_args,p_arg_count,r_error);
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}
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void set_method_info(const MethodInfo& p_info) {
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set_argument_count( p_info.arguments.size() );
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#ifdef DEBUG_METHODS_ENABLED
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Variant::Type *at = memnew_arr( Variant::Type , p_info.arguments.size()+1 );
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at[0]=p_info.return_val.type;
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if (p_info.arguments.size()) {
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Vector<StringName> names;
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names.resize(p_info.arguments.size());
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for(int i=0;i<p_info.arguments.size();i++) {
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at[i+1]=p_info.arguments[i].type;
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names[i]=p_info.arguments[i].name;
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}
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set_argument_names(names);
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}
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set_argument_types(at);
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#endif
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}
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#ifdef PTRCALL_ENABLED
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virtual void ptrcall(Object* p_object,const void** p_args,void* r_ret) {} //todo
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#endif
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void set_method(NativeCall p_method) { call_method=p_method; }
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virtual bool is_const() const { return false; }
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virtual String get_instance_type() const { return T::get_type_static(); }
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MethodBindNative() { call_method=NULL; }
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};
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template<class T >
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MethodBind* create_native_method_bind( Variant (T::*p_method)(const Variant**,int ,Variant::CallError &), const MethodInfo& p_info ) {
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MethodBindNative<T > * a = memnew( (MethodBindNative<T >) );
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a->set_method(p_method);
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a->set_method_info(p_info);
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return a;
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}
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/** This amazing hack is based on the FastDelegates theory */
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// tale of an amazing hack.. //
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// if you declare an nonexistent class..
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class __UnexistingClass;
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#include "method_bind.inc"
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#endif
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