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10a1f64968
godot/modules/gdscript/gdscript_function.h
George Marques 10a1f64968
GDScript: Fix crash caused by uninitialized temp stack slots 
This adds initialization to every typed temporary stack slot at the
beginning of the function call instead of emitting instructions, since
those might be in a conditional branch and not be called.
2021-05-17 10:59:43 -03:00

624 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/reference.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)) {
// Try with underscore prefix
StringName underscore_native_type = "_" + native_type;
if (!ClassDB::is_parent_class(obj->get_class_name(), underscore_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;
GDScriptDataType &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());
}
return *this;
}
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,
// 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_QUAT,
OPCODE_CALL_PTRCALL_AABB,
OPCODE_CALL_PTRCALL_BASIS,
OPCODE_CALL_PTRCALL_TRANSFORM,
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_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_QUAT,
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;
MultiplayerAPI::RPCMode rpc_mode = MultiplayerAPI::RPC_MODE_DISABLED;
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_ MultiplayerAPI::RPCMode get_rpc_mode() const { return rpc_mode; }
GDScriptFunction();
~GDScriptFunction();
};
class GDScriptFunctionState : public Reference {
GDCLASS(GDScriptFunctionState, Reference);
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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