308 lines
9.1 KiB
C++
308 lines
9.1 KiB
C++
/*************************************************************************/
|
|
/* method_bind.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2016 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 */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#ifndef METHOD_BIND_H
|
|
#define METHOD_BIND_H
|
|
|
|
#include "list.h"
|
|
#include "variant.h"
|
|
#include "object.h"
|
|
#include <stdio.h>
|
|
|
|
/**
|
|
@author Juan Linietsky <reduzio@gmail.com>
|
|
*/
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
#define DEBUG_METHODS_ENABLED
|
|
#endif
|
|
|
|
enum MethodFlags {
|
|
|
|
METHOD_FLAG_NORMAL=1,
|
|
METHOD_FLAG_EDITOR=2,
|
|
METHOD_FLAG_NOSCRIPT=4,
|
|
METHOD_FLAG_CONST=8,
|
|
METHOD_FLAG_REVERSE=16, // used for events
|
|
METHOD_FLAG_VIRTUAL=32,
|
|
METHOD_FLAGS_DEFAULT=METHOD_FLAG_NORMAL,
|
|
};
|
|
|
|
template<class T>
|
|
struct VariantCaster {
|
|
|
|
static _FORCE_INLINE_ T cast(const Variant& p_variant) {
|
|
|
|
return p_variant;
|
|
}
|
|
};
|
|
|
|
template<class T>
|
|
struct VariantCaster<T&> {
|
|
|
|
static _FORCE_INLINE_ T cast(const Variant& p_variant) {
|
|
|
|
return p_variant;
|
|
}
|
|
};
|
|
|
|
template<class T>
|
|
struct VariantCaster<const T&> {
|
|
|
|
static _FORCE_INLINE_ T cast(const Variant& p_variant) {
|
|
|
|
return p_variant;
|
|
}
|
|
};
|
|
|
|
#define _VC( m_idx )\
|
|
(VariantCaster<P##m_idx>::cast( (m_idx-1)>=p_arg_count?get_default_argument(m_idx-1):*p_args[m_idx-1] ))
|
|
|
|
//SIMPLE_NUMERIC_TYPE is used to avoid a warning on Variant::get_type_for
|
|
#define VARIANT_ENUM_CAST( m_enum ) \
|
|
SIMPLE_NUMERIC_TYPE( m_enum );\
|
|
template<> \
|
|
struct VariantCaster<m_enum> {\
|
|
\
|
|
static _FORCE_INLINE_ m_enum cast(const Variant& p_variant) {\
|
|
return (m_enum)p_variant.operator int();\
|
|
}\
|
|
};
|
|
|
|
|
|
#define CHECK_ARG(m_arg)\
|
|
if ((m_arg-1)<p_arg_count) {\
|
|
Variant::Type argtype=get_argument_type(m_arg-1);\
|
|
if (!Variant::can_convert_strict(p_args[m_arg-1]->get_type(),argtype)) {\
|
|
r_error.error=Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;\
|
|
r_error.argument=m_arg-1;\
|
|
r_error.expected=argtype;\
|
|
return Variant();\
|
|
}\
|
|
}
|
|
|
|
#define CHECK_NOARG(m_arg)\
|
|
{\
|
|
if (p_arg##m_arg.get_type()!=Variant::NIL) {\
|
|
if (r_argerror) *r_argerror=(m_arg-1);\
|
|
return CALL_ERROR_EXTRA_ARGUMENT;\
|
|
}\
|
|
}
|
|
|
|
// some helpers
|
|
|
|
VARIANT_ENUM_CAST( Vector3::Axis );
|
|
VARIANT_ENUM_CAST( Image::Format );
|
|
VARIANT_ENUM_CAST( Error );
|
|
VARIANT_ENUM_CAST( wchar_t );
|
|
VARIANT_ENUM_CAST( Margin );
|
|
VARIANT_ENUM_CAST( Orientation );
|
|
VARIANT_ENUM_CAST( HAlign );
|
|
|
|
class MethodBind {
|
|
|
|
|
|
int method_id;
|
|
uint32_t hint_flags;
|
|
StringName name;
|
|
Vector<Variant> default_arguments;
|
|
int default_argument_count;
|
|
int argument_count;
|
|
#ifdef DEBUG_METHODS_ENABLED
|
|
Vector<StringName> arg_names;
|
|
Variant::Type *argument_types;
|
|
StringName ret_type;
|
|
#endif
|
|
bool _const;
|
|
|
|
|
|
protected:
|
|
|
|
void _set_const(bool p_const);
|
|
#ifdef DEBUG_METHODS_ENABLED
|
|
virtual Variant::Type _gen_argument_type(int p_arg) const=0;
|
|
void _generate_argument_types(int p_count);
|
|
void set_argument_types(Variant::Type *p_types) { argument_types=p_types; }
|
|
#endif
|
|
void set_argument_count(int p_count) { argument_count=p_count; }
|
|
public:
|
|
|
|
Vector<Variant> get_default_arguments() const { return default_arguments; }
|
|
_FORCE_INLINE_ int get_default_argument_count() const { return default_argument_count; }
|
|
|
|
_FORCE_INLINE_ Variant has_default_argument(int p_arg) const {
|
|
|
|
int idx=argument_count-p_arg-1;
|
|
|
|
if (idx<0 || idx>=default_arguments.size())
|
|
return false;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
_FORCE_INLINE_ Variant get_default_argument(int p_arg) const {
|
|
|
|
int idx=argument_count-p_arg-1;
|
|
|
|
if (idx<0 || idx>=default_arguments.size())
|
|
return Variant();
|
|
else
|
|
return default_arguments[idx];
|
|
}
|
|
|
|
#ifdef DEBUG_METHODS_ENABLED
|
|
|
|
_FORCE_INLINE_ void set_return_type(const StringName& p_type) { ret_type=p_type; }
|
|
_FORCE_INLINE_ StringName get_return_type() const { return ret_type; }
|
|
|
|
_FORCE_INLINE_ Variant::Type get_argument_type(int p_argument) const {
|
|
|
|
ERR_FAIL_COND_V(p_argument<-1 || p_argument>argument_count,Variant::NIL);
|
|
return argument_types[p_argument+1];
|
|
|
|
}
|
|
|
|
PropertyInfo get_argument_info(int p_argument) const;
|
|
|
|
void set_argument_names(const Vector<StringName>& p_names);
|
|
Vector<StringName> get_argument_names() const;
|
|
#endif
|
|
void set_hint_flags(uint32_t p_hint) { hint_flags=p_hint; }
|
|
uint32_t get_hint_flags() const { return hint_flags|(is_const()?METHOD_FLAG_CONST:0); }
|
|
virtual String get_instance_type() const=0;
|
|
|
|
_FORCE_INLINE_ int get_argument_count() const { return argument_count; };
|
|
|
|
#if 0
|
|
_FORCE_INLINE_ Variant call_safe(const Variant** p_args,int p_arg_count, Variant::CallError& r_error) {
|
|
|
|
r_error.error=Variant::CallError::CALL_OK;
|
|
check_call( p_args, &errorarg );
|
|
if (!err)
|
|
return call(p_object, VARIANT_ARG_PASS );
|
|
|
|
VARIANT_ARGPTRS
|
|
String errstr;
|
|
String methodname = get_instance_type()+"::"+name;
|
|
if (err==CALL_ERROR_ARGUMENT_TYPE) {
|
|
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())+".";
|
|
}
|
|
if (err==CALL_ERROR_EXTRA_ARGUMENT) {
|
|
errstr="Invalid call. Member function '"+methodname+"' takes "+itos(get_argument_count())+" argument, but argument "+itos(errorarg+1)+" was received.";
|
|
}
|
|
|
|
ERR_PRINT(errstr.ascii().get_data());
|
|
return Variant();
|
|
}
|
|
#endif
|
|
virtual Variant call(Object* p_object,const Variant** p_args,int p_arg_count, Variant::CallError& r_error)=0;
|
|
StringName get_name() const;
|
|
void set_name(const StringName& p_name);
|
|
_FORCE_INLINE_ int get_method_id() const { return method_id; }
|
|
_FORCE_INLINE_ bool is_const() const { return _const; }
|
|
|
|
|
|
void set_default_arguments(const Vector<Variant>& p_defargs);
|
|
|
|
MethodBind();
|
|
virtual ~MethodBind();
|
|
};
|
|
|
|
|
|
template<class T>
|
|
class MethodBindNative : public MethodBind {
|
|
public:
|
|
typedef Variant (T::*NativeCall)(const Variant**,int ,Variant::CallError &);
|
|
protected:
|
|
|
|
NativeCall call_method;
|
|
public:
|
|
|
|
virtual Variant::Type _gen_argument_type(int p_arg) const {
|
|
|
|
return Variant::NIL;
|
|
}
|
|
|
|
virtual Variant call(Object* p_object,const Variant** p_args,int p_arg_count, Variant::CallError& r_error) {
|
|
|
|
T* instance=static_cast<T*>(p_object);
|
|
return (instance->*call_method)(p_args,p_arg_count,r_error);
|
|
}
|
|
void set_method_info(const MethodInfo& p_info) {
|
|
|
|
|
|
set_argument_count( p_info.arguments.size() );
|
|
#ifdef DEBUG_METHODS_ENABLED
|
|
Variant::Type *at = memnew_arr( Variant::Type , p_info.arguments.size()+1 );
|
|
at[0]=p_info.return_val.type;
|
|
if (p_info.arguments.size()) {
|
|
|
|
Vector<StringName> names;
|
|
names.resize(p_info.arguments.size());
|
|
for(int i=0;i<p_info.arguments.size();i++) {
|
|
|
|
at[i+1]=p_info.arguments[i].type;
|
|
names[i]=p_info.arguments[i].name;
|
|
}
|
|
|
|
set_argument_names(names);
|
|
}
|
|
set_argument_types(at);
|
|
#endif
|
|
}
|
|
|
|
void set_method(NativeCall p_method) { call_method=p_method; }
|
|
virtual bool is_const() const { return false; }
|
|
virtual String get_instance_type() const { return T::get_type_static(); }
|
|
|
|
MethodBindNative() { call_method=NULL; }
|
|
};
|
|
|
|
|
|
template<class T >
|
|
MethodBind* create_native_method_bind( Variant (T::*p_method)(const Variant**,int ,Variant::CallError &), const MethodInfo& p_info ) {
|
|
|
|
MethodBindNative<T > * a = memnew( (MethodBindNative<T >) );
|
|
a->set_method(p_method);
|
|
a->set_method_info(p_info);
|
|
return a;
|
|
}
|
|
|
|
|
|
/** This amazing hack is based on the FastDelegates theory */
|
|
|
|
// tale of an amazing hack.. //
|
|
|
|
// if you declare an nonexistent class..
|
|
class __UnexistingClass;
|
|
|
|
|
|
#include "method_bind.inc"
|
|
|
|
#endif
|