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godot/modules/gdscript/gdscript_function.h
Rémi Verschelde 7da392bcc5
Don't return reference on copy assignment operators 
We prefer to prevent using chained assignment (`T a = b = c = T();`) as this
can lead to confusing code and subtle bugs.

According to https://en.wikipedia.org/wiki/Assignment_operator_(C%2B%2B), C++
allows any arbitrary return type, so this is standard compliant.

This could be re-assessed if/when we have an actual need for a behavior more
akin to that of the C++ STL, for now this PR simply changes a handful of
cases which were inconsistent with the rest of the codebase (`void` return
type was already the most common case prior to this commit).
2021-11-30 16:26:29 +01:00

621 lines
19 KiB
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/*************************************************************************/
/* gdscript_function.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 GDSCRIPT_FUNCTION_H
#define GDSCRIPT_FUNCTION_H
#include "core/object/ref_counted.h"
#include "core/object/script_language.h"
#include "core/os/thread.h"
#include "core/string/string_name.h"
#include "core/templates/pair.h"
#include "core/templates/self_list.h"
#include "core/variant/variant.h"
#include "gdscript_utility_functions.h"
class GDScriptInstance;
class GDScript;
class GDScriptDataType {
private:
GDScriptDataType *container_element_type = nullptr;
public:
enum Kind {
UNINITIALIZED,
BUILTIN,
NATIVE,
SCRIPT,
GDSCRIPT,
};
Kind kind = UNINITIALIZED;
bool has_type = false;
Variant::Type builtin_type = Variant::NIL;
StringName native_type;
Script *script_type = nullptr;
Ref<Script> script_type_ref;
bool is_type(const Variant &p_variant, bool p_allow_implicit_conversion = false) const {
if (!has_type) {
return true; // Can't type check
}
switch (kind) {
case UNINITIALIZED:
break;
case BUILTIN: {
Variant::Type var_type = p_variant.get_type();
bool valid = builtin_type == var_type;
if (valid && builtin_type == Variant::ARRAY && has_container_element_type()) {
Array array = p_variant;
if (array.is_typed()) {
Variant::Type array_builtin_type = (Variant::Type)array.get_typed_builtin();
StringName array_native_type = array.get_typed_class_name();
Ref<Script> array_script_type_ref = array.get_typed_script();
if (array_script_type_ref.is_valid()) {
valid = (container_element_type->kind == SCRIPT || container_element_type->kind == GDSCRIPT) && container_element_type->script_type == array_script_type_ref.ptr();
} else if (array_native_type != StringName()) {
valid = container_element_type->kind == NATIVE && container_element_type->native_type == array_native_type;
} else {
valid = container_element_type->kind == BUILTIN && container_element_type->builtin_type == array_builtin_type;
}
} else {
valid = false;
}
} else if (!valid && p_allow_implicit_conversion) {
valid = Variant::can_convert_strict(var_type, builtin_type);
}
return valid;
} break;
case NATIVE: {
if (p_variant.get_type() == Variant::NIL) {
return true;
}
if (p_variant.get_type() != Variant::OBJECT) {
return false;
}
Object *obj = p_variant.get_validated_object();
if (!obj) {
return false;
}
if (!ClassDB::is_parent_class(obj->get_class_name(), native_type)) {
return false;
}
return true;
} break;
case SCRIPT:
case GDSCRIPT: {
if (p_variant.get_type() == Variant::NIL) {
return true;
}
if (p_variant.get_type() != Variant::OBJECT) {
return false;
}
Object *obj = p_variant.get_validated_object();
if (!obj) {
return false;
}
Ref<Script> base = obj && obj->get_script_instance() ? obj->get_script_instance()->get_script() : nullptr;
bool valid = false;
while (base.is_valid()) {
if (base == script_type) {
valid = true;
break;
}
base = base->get_base_script();
}
return valid;
} break;
}
return false;
}
operator PropertyInfo() const {
PropertyInfo info;
if (has_type) {
switch (kind) {
case UNINITIALIZED:
break;
case BUILTIN: {
info.type = builtin_type;
} break;
case NATIVE: {
info.type = Variant::OBJECT;
info.class_name = native_type;
} break;
case SCRIPT:
case GDSCRIPT: {
info.type = Variant::OBJECT;
info.class_name = script_type->get_instance_base_type();
} break;
}
} else {
info.type = Variant::NIL;
info.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
}
return info;
}
void set_container_element_type(const GDScriptDataType &p_element_type) {
container_element_type = memnew(GDScriptDataType(p_element_type));
}
GDScriptDataType get_container_element_type() const {
ERR_FAIL_COND_V(container_element_type == nullptr, GDScriptDataType());
return *container_element_type;
}
bool has_container_element_type() const {
return container_element_type != nullptr;
}
void unset_container_element_type() {
if (container_element_type) {
memdelete(container_element_type);
}
container_element_type = nullptr;
}
GDScriptDataType() = default;
void operator=(const GDScriptDataType &p_other) {
kind = p_other.kind;
has_type = p_other.has_type;
builtin_type = p_other.builtin_type;
native_type = p_other.native_type;
script_type = p_other.script_type;
script_type_ref = p_other.script_type_ref;
unset_container_element_type();
if (p_other.has_container_element_type()) {
set_container_element_type(p_other.get_container_element_type());
}
}
GDScriptDataType(const GDScriptDataType &p_other) {
*this = p_other;
}
~GDScriptDataType() {
unset_container_element_type();
}
};
class GDScriptFunction {
public:
enum Opcode {
OPCODE_OPERATOR,
OPCODE_OPERATOR_VALIDATED,
OPCODE_EXTENDS_TEST,
OPCODE_IS_BUILTIN,
OPCODE_SET_KEYED,
OPCODE_SET_KEYED_VALIDATED,
OPCODE_SET_INDEXED_VALIDATED,
OPCODE_GET_KEYED,
OPCODE_GET_KEYED_VALIDATED,
OPCODE_GET_INDEXED_VALIDATED,
OPCODE_SET_NAMED,
OPCODE_SET_NAMED_VALIDATED,
OPCODE_GET_NAMED,
OPCODE_GET_NAMED_VALIDATED,
OPCODE_SET_MEMBER,
OPCODE_GET_MEMBER,
OPCODE_ASSIGN,
OPCODE_ASSIGN_TRUE,
OPCODE_ASSIGN_FALSE,
OPCODE_ASSIGN_TYPED_BUILTIN,
OPCODE_ASSIGN_TYPED_ARRAY,
OPCODE_ASSIGN_TYPED_NATIVE,
OPCODE_ASSIGN_TYPED_SCRIPT,
OPCODE_CAST_TO_BUILTIN,
OPCODE_CAST_TO_NATIVE,
OPCODE_CAST_TO_SCRIPT,
OPCODE_CONSTRUCT, // Only for basic types!
OPCODE_CONSTRUCT_VALIDATED, // Only for basic types!
OPCODE_CONSTRUCT_ARRAY,
OPCODE_CONSTRUCT_TYPED_ARRAY,
OPCODE_CONSTRUCT_DICTIONARY,
OPCODE_CALL,
OPCODE_CALL_RETURN,
OPCODE_CALL_ASYNC,
OPCODE_CALL_UTILITY,
OPCODE_CALL_UTILITY_VALIDATED,
OPCODE_CALL_GDSCRIPT_UTILITY,
OPCODE_CALL_BUILTIN_TYPE_VALIDATED,
OPCODE_CALL_SELF_BASE,
OPCODE_CALL_METHOD_BIND,
OPCODE_CALL_METHOD_BIND_RET,
OPCODE_CALL_BUILTIN_STATIC,
// ptrcall have one instruction per return type.
OPCODE_CALL_PTRCALL_NO_RETURN,
OPCODE_CALL_PTRCALL_BOOL,
OPCODE_CALL_PTRCALL_INT,
OPCODE_CALL_PTRCALL_FLOAT,
OPCODE_CALL_PTRCALL_STRING,
OPCODE_CALL_PTRCALL_VECTOR2,
OPCODE_CALL_PTRCALL_VECTOR2I,
OPCODE_CALL_PTRCALL_RECT2,
OPCODE_CALL_PTRCALL_RECT2I,
OPCODE_CALL_PTRCALL_VECTOR3,
OPCODE_CALL_PTRCALL_VECTOR3I,
OPCODE_CALL_PTRCALL_TRANSFORM2D,
OPCODE_CALL_PTRCALL_PLANE,
OPCODE_CALL_PTRCALL_QUATERNION,
OPCODE_CALL_PTRCALL_AABB,
OPCODE_CALL_PTRCALL_BASIS,
OPCODE_CALL_PTRCALL_TRANSFORM3D,
OPCODE_CALL_PTRCALL_COLOR,
OPCODE_CALL_PTRCALL_STRING_NAME,
OPCODE_CALL_PTRCALL_NODE_PATH,
OPCODE_CALL_PTRCALL_RID,
OPCODE_CALL_PTRCALL_OBJECT,
OPCODE_CALL_PTRCALL_CALLABLE,
OPCODE_CALL_PTRCALL_SIGNAL,
OPCODE_CALL_PTRCALL_DICTIONARY,
OPCODE_CALL_PTRCALL_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_BYTE_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_INT32_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_INT64_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_FLOAT32_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_FLOAT64_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_STRING_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_VECTOR2_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_VECTOR3_ARRAY,
OPCODE_CALL_PTRCALL_PACKED_COLOR_ARRAY,
OPCODE_AWAIT,
OPCODE_AWAIT_RESUME,
OPCODE_CREATE_LAMBDA,
OPCODE_JUMP,
OPCODE_JUMP_IF,
OPCODE_JUMP_IF_NOT,
OPCODE_JUMP_TO_DEF_ARGUMENT,
OPCODE_RETURN,
OPCODE_RETURN_TYPED_BUILTIN,
OPCODE_RETURN_TYPED_ARRAY,
OPCODE_RETURN_TYPED_NATIVE,
OPCODE_RETURN_TYPED_SCRIPT,
OPCODE_ITERATE_BEGIN,
OPCODE_ITERATE_BEGIN_INT,
OPCODE_ITERATE_BEGIN_FLOAT,
OPCODE_ITERATE_BEGIN_VECTOR2,
OPCODE_ITERATE_BEGIN_VECTOR2I,
OPCODE_ITERATE_BEGIN_VECTOR3,
OPCODE_ITERATE_BEGIN_VECTOR3I,
OPCODE_ITERATE_BEGIN_STRING,
OPCODE_ITERATE_BEGIN_DICTIONARY,
OPCODE_ITERATE_BEGIN_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_BYTE_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_INT32_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_INT64_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_FLOAT32_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_FLOAT64_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_STRING_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_VECTOR2_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_VECTOR3_ARRAY,
OPCODE_ITERATE_BEGIN_PACKED_COLOR_ARRAY,
OPCODE_ITERATE_BEGIN_OBJECT,
OPCODE_ITERATE,
OPCODE_ITERATE_INT,
OPCODE_ITERATE_FLOAT,
OPCODE_ITERATE_VECTOR2,
OPCODE_ITERATE_VECTOR2I,
OPCODE_ITERATE_VECTOR3,
OPCODE_ITERATE_VECTOR3I,
OPCODE_ITERATE_STRING,
OPCODE_ITERATE_DICTIONARY,
OPCODE_ITERATE_ARRAY,
OPCODE_ITERATE_PACKED_BYTE_ARRAY,
OPCODE_ITERATE_PACKED_INT32_ARRAY,
OPCODE_ITERATE_PACKED_INT64_ARRAY,
OPCODE_ITERATE_PACKED_FLOAT32_ARRAY,
OPCODE_ITERATE_PACKED_FLOAT64_ARRAY,
OPCODE_ITERATE_PACKED_STRING_ARRAY,
OPCODE_ITERATE_PACKED_VECTOR2_ARRAY,
OPCODE_ITERATE_PACKED_VECTOR3_ARRAY,
OPCODE_ITERATE_PACKED_COLOR_ARRAY,
OPCODE_ITERATE_OBJECT,
OPCODE_STORE_GLOBAL,
OPCODE_STORE_NAMED_GLOBAL,
OPCODE_TYPE_ADJUST_BOOL,
OPCODE_TYPE_ADJUST_INT,
OPCODE_TYPE_ADJUST_FLOAT,
OPCODE_TYPE_ADJUST_STRING,
OPCODE_TYPE_ADJUST_VECTOR2,
OPCODE_TYPE_ADJUST_VECTOR2I,
OPCODE_TYPE_ADJUST_RECT2,
OPCODE_TYPE_ADJUST_RECT2I,
OPCODE_TYPE_ADJUST_VECTOR3,
OPCODE_TYPE_ADJUST_VECTOR3I,
OPCODE_TYPE_ADJUST_TRANSFORM2D,
OPCODE_TYPE_ADJUST_PLANE,
OPCODE_TYPE_ADJUST_QUATERNION,
OPCODE_TYPE_ADJUST_AABB,
OPCODE_TYPE_ADJUST_BASIS,
OPCODE_TYPE_ADJUST_TRANSFORM,
OPCODE_TYPE_ADJUST_COLOR,
OPCODE_TYPE_ADJUST_STRING_NAME,
OPCODE_TYPE_ADJUST_NODE_PATH,
OPCODE_TYPE_ADJUST_RID,
OPCODE_TYPE_ADJUST_OBJECT,
OPCODE_TYPE_ADJUST_CALLABLE,
OPCODE_TYPE_ADJUST_SIGNAL,
OPCODE_TYPE_ADJUST_DICTIONARY,
OPCODE_TYPE_ADJUST_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_BYTE_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_INT32_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_INT64_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_FLOAT32_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_FLOAT64_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_STRING_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_VECTOR2_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_VECTOR3_ARRAY,
OPCODE_TYPE_ADJUST_PACKED_COLOR_ARRAY,
OPCODE_ASSERT,
OPCODE_BREAKPOINT,
OPCODE_LINE,
OPCODE_END
};
enum Address {
ADDR_BITS = 24,
ADDR_MASK = ((1 << ADDR_BITS) - 1),
ADDR_TYPE_MASK = ~ADDR_MASK,
ADDR_TYPE_STACK = 0,
ADDR_TYPE_CONSTANT = 1,
ADDR_TYPE_MEMBER = 2,
};
enum FixedAddresses {
ADDR_STACK_SELF = 0,
ADDR_STACK_CLASS = 1,
ADDR_STACK_NIL = 2,
ADDR_SELF = ADDR_STACK_SELF | (ADDR_TYPE_STACK << ADDR_BITS),
ADDR_CLASS = ADDR_STACK_CLASS | (ADDR_TYPE_STACK << ADDR_BITS),
ADDR_NIL = ADDR_STACK_NIL | (ADDR_TYPE_STACK << ADDR_BITS),
};
enum Instruction {
INSTR_BITS = 20,
INSTR_MASK = ((1 << INSTR_BITS) - 1),
INSTR_ARGS_MASK = ~INSTR_MASK,
};
struct StackDebug {
int line;
int pos;
bool added;
StringName identifier;
};
private:
friend class GDScriptCompiler;
friend class GDScriptByteCodeGenerator;
StringName source;
mutable Variant nil;
mutable Variant *_constants_ptr = nullptr;
int _constant_count = 0;
const StringName *_global_names_ptr = nullptr;
int _global_names_count = 0;
const int *_default_arg_ptr = nullptr;
int _default_arg_count = 0;
int _operator_funcs_count = 0;
const Variant::ValidatedOperatorEvaluator *_operator_funcs_ptr = nullptr;
int _setters_count = 0;
const Variant::ValidatedSetter *_setters_ptr = nullptr;
int _getters_count = 0;
const Variant::ValidatedGetter *_getters_ptr = nullptr;
int _keyed_setters_count = 0;
const Variant::ValidatedKeyedSetter *_keyed_setters_ptr = nullptr;
int _keyed_getters_count = 0;
const Variant::ValidatedKeyedGetter *_keyed_getters_ptr = nullptr;
int _indexed_setters_count = 0;
const Variant::ValidatedIndexedSetter *_indexed_setters_ptr = nullptr;
int _indexed_getters_count = 0;
const Variant::ValidatedIndexedGetter *_indexed_getters_ptr = nullptr;
int _builtin_methods_count = 0;
const Variant::ValidatedBuiltInMethod *_builtin_methods_ptr = nullptr;
int _constructors_count = 0;
const Variant::ValidatedConstructor *_constructors_ptr = nullptr;
int _utilities_count = 0;
const Variant::ValidatedUtilityFunction *_utilities_ptr = nullptr;
int _gds_utilities_count = 0;
const GDScriptUtilityFunctions::FunctionPtr *_gds_utilities_ptr = nullptr;
int _methods_count = 0;
MethodBind **_methods_ptr = nullptr;
int _lambdas_count = 0;
GDScriptFunction **_lambdas_ptr = nullptr;
const int *_code_ptr = nullptr;
int _code_size = 0;
int _argument_count = 0;
int _stack_size = 0;
int _instruction_args_size = 0;
int _ptrcall_args_size = 0;
int _initial_line = 0;
bool _static = false;
Multiplayer::RPCConfig rpc_config;
GDScript *_script = nullptr;
StringName name;
Vector<Variant> constants;
Vector<StringName> global_names;
Vector<int> default_arguments;
Vector<Variant::ValidatedOperatorEvaluator> operator_funcs;
Vector<Variant::ValidatedSetter> setters;
Vector<Variant::ValidatedGetter> getters;
Vector<Variant::ValidatedKeyedSetter> keyed_setters;
Vector<Variant::ValidatedKeyedGetter> keyed_getters;
Vector<Variant::ValidatedIndexedSetter> indexed_setters;
Vector<Variant::ValidatedIndexedGetter> indexed_getters;
Vector<Variant::ValidatedBuiltInMethod> builtin_methods;
Vector<Variant::ValidatedConstructor> constructors;
Vector<Variant::ValidatedUtilityFunction> utilities;
Vector<GDScriptUtilityFunctions::FunctionPtr> gds_utilities;
Vector<MethodBind *> methods;
Vector<GDScriptFunction *> lambdas;
Vector<int> code;
Vector<GDScriptDataType> argument_types;
GDScriptDataType return_type;
Map<int, Variant::Type> temporary_slots;
#ifdef TOOLS_ENABLED
Vector<StringName> arg_names;
Vector<Variant> default_arg_values;
#endif
List<StackDebug> stack_debug;
_FORCE_INLINE_ Variant *_get_variant(int p_address, GDScriptInstance *p_instance, Variant *p_stack, String &r_error) const;
_FORCE_INLINE_ String _get_call_error(const Callable::CallError &p_err, const String &p_where, const Variant **argptrs) const;
friend class GDScriptLanguage;
SelfList<GDScriptFunction> function_list{ this };
#ifdef DEBUG_ENABLED
CharString func_cname;
const char *_func_cname = nullptr;
struct Profile {
StringName signature;
uint64_t call_count = 0;
uint64_t self_time = 0;
uint64_t total_time = 0;
uint64_t frame_call_count = 0;
uint64_t frame_self_time = 0;
uint64_t frame_total_time = 0;
uint64_t last_frame_call_count = 0;
uint64_t last_frame_self_time = 0;
uint64_t last_frame_total_time = 0;
} profile;
#endif
public:
struct CallState {
GDScript *script = nullptr;
GDScriptInstance *instance = nullptr;
#ifdef DEBUG_ENABLED
StringName function_name;
String script_path;
#endif
Vector<uint8_t> stack;
int stack_size = 0;
uint32_t alloca_size = 0;
int ip = 0;
int line = 0;
int defarg = 0;
Variant result;
};
_FORCE_INLINE_ bool is_static() const { return _static; }
const int *get_code() const; //used for debug
int get_code_size() const;
Variant get_constant(int p_idx) const;
StringName get_global_name(int p_idx) const;
StringName get_name() const;
int get_max_stack_size() const;
int get_default_argument_count() const;
int get_default_argument_addr(int p_idx) const;
GDScriptDataType get_return_type() const;
GDScriptDataType get_argument_type(int p_idx) const;
GDScript *get_script() const { return _script; }
StringName get_source() const { return source; }
void debug_get_stack_member_state(int p_line, List<Pair<StringName, int>> *r_stackvars) const;
_FORCE_INLINE_ bool is_empty() const { return _code_size == 0; }
int get_argument_count() const { return _argument_count; }
StringName get_argument_name(int p_idx) const {
#ifdef TOOLS_ENABLED
ERR_FAIL_INDEX_V(p_idx, arg_names.size(), StringName());
return arg_names[p_idx];
#else
return StringName();
#endif
}
Variant get_default_argument(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, default_arguments.size(), Variant());
return default_arguments[p_idx];
}
#ifdef TOOLS_ENABLED
const Vector<Variant> &get_default_arg_values() const {
return default_arg_values;
}
#endif // TOOLS_ENABLED
Variant call(GDScriptInstance *p_instance, const Variant **p_args, int p_argcount, Callable::CallError &r_err, CallState *p_state = nullptr);
#ifdef DEBUG_ENABLED
void disassemble(const Vector<String> &p_code_lines) const;
#endif
_FORCE_INLINE_ Multiplayer::RPCConfig get_rpc_config() const { return rpc_config; }
GDScriptFunction();
~GDScriptFunction();
};
class GDScriptFunctionState : public RefCounted {
GDCLASS(GDScriptFunctionState, RefCounted);
friend class GDScriptFunction;
GDScriptFunction *function = nullptr;
GDScriptFunction::CallState state;
Variant _signal_callback(const Variant **p_args, int p_argcount, Callable::CallError &r_error);
Ref<GDScriptFunctionState> first_state;
SelfList<GDScriptFunctionState> scripts_list;
SelfList<GDScriptFunctionState> instances_list;
protected:
static void _bind_methods();
public:
bool is_valid(bool p_extended_check = false) const;
Variant resume(const Variant &p_arg = Variant());
void _clear_stack();
GDScriptFunctionState();
~GDScriptFunctionState();
};
#endif // GDSCRIPT_FUNCTION_H
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