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godot/core/variant/variant.h
Thaddeus Crews 7599a7b719
Core: Readd Variant class initializer, fix comment
2024-05-14 12:20:40 -05:00

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/**************************************************************************/
/* variant.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 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 VARIANT_H
#define VARIANT_H
#include "core/core_string_names.h"
#include "core/input/input_enums.h"
#include "core/io/ip_address.h"
#include "core/math/aabb.h"
#include "core/math/basis.h"
#include "core/math/color.h"
#include "core/math/face3.h"
#include "core/math/plane.h"
#include "core/math/projection.h"
#include "core/math/quaternion.h"
#include "core/math/rect2.h"
#include "core/math/rect2i.h"
#include "core/math/transform_2d.h"
#include "core/math/transform_3d.h"
#include "core/math/vector2.h"
#include "core/math/vector2i.h"
#include "core/math/vector3.h"
#include "core/math/vector3i.h"
#include "core/math/vector4.h"
#include "core/math/vector4i.h"
#include "core/object/object_id.h"
#include "core/os/keyboard.h"
#include "core/string/node_path.h"
#include "core/string/ustring.h"
#include "core/templates/paged_allocator.h"
#include "core/templates/rid.h"
#include "core/variant/array.h"
#include "core/variant/callable.h"
#include "core/variant/dictionary.h"
class Object;
struct PropertyInfo;
struct MethodInfo;
typedef Vector<uint8_t> PackedByteArray;
typedef Vector<int32_t> PackedInt32Array;
typedef Vector<int64_t> PackedInt64Array;
typedef Vector<float> PackedFloat32Array;
typedef Vector<double> PackedFloat64Array;
typedef Vector<real_t> PackedRealArray;
typedef Vector<String> PackedStringArray;
typedef Vector<Vector2> PackedVector2Array;
typedef Vector<Vector3> PackedVector3Array;
typedef Vector<Color> PackedColorArray;
typedef Vector<Vector4> PackedVector4Array;
class Variant {
public:
// If this changes the table in variant_op must be updated
enum Type {
NIL,
// atomic types
BOOL,
INT,
FLOAT,
STRING,
// math types
VECTOR2,
VECTOR2I,
RECT2,
RECT2I,
VECTOR3,
VECTOR3I,
TRANSFORM2D,
VECTOR4,
VECTOR4I,
PLANE,
QUATERNION,
AABB,
BASIS,
TRANSFORM3D,
PROJECTION,
// misc types
COLOR,
STRING_NAME,
NODE_PATH,
RID,
OBJECT,
CALLABLE,
SIGNAL,
DICTIONARY,
ARRAY,
// typed arrays
PACKED_BYTE_ARRAY,
PACKED_INT32_ARRAY,
PACKED_INT64_ARRAY,
PACKED_FLOAT32_ARRAY,
PACKED_FLOAT64_ARRAY,
PACKED_STRING_ARRAY,
PACKED_VECTOR2_ARRAY,
PACKED_VECTOR3_ARRAY,
PACKED_COLOR_ARRAY,
PACKED_VECTOR4_ARRAY,
VARIANT_MAX
};
enum {
// Maximum recursion depth allowed when serializing variants.
MAX_RECURSION_DEPTH = 1024,
};
private:
struct Pools {
union BucketSmall {
BucketSmall() {}
~BucketSmall() {}
Transform2D _transform2d;
::AABB _aabb;
};
union BucketMedium {
BucketMedium() {}
~BucketMedium() {}
Basis _basis;
Transform3D _transform3d;
};
union BucketLarge {
BucketLarge() {}
~BucketLarge() {}
Projection _projection;
};
static PagedAllocator<BucketSmall, true> _bucket_small;
static PagedAllocator<BucketMedium, true> _bucket_medium;
static PagedAllocator<BucketLarge, true> _bucket_large;
};
friend struct _VariantCall;
friend class VariantInternal;
// Variant takes 24 bytes when real_t is float, and 40 bytes if double.
// It only allocates extra memory for AABB/Transform2D (24, 48 if double),
// Basis/Transform3D (48, 96 if double), Projection (64, 128 if double),
// and PackedArray/Array/Dictionary (platform-dependent).
Type type = NIL;
struct ObjData {
ObjectID id;
Object *obj = nullptr;
};
/* array helpers */
struct PackedArrayRefBase {
SafeRefCount refcount;
_FORCE_INLINE_ PackedArrayRefBase *reference() {
if (refcount.ref()) {
return this;
} else {
return nullptr;
}
}
static _FORCE_INLINE_ PackedArrayRefBase *reference_from(PackedArrayRefBase *p_base, PackedArrayRefBase *p_from) {
if (p_base == p_from) {
return p_base; //same thing, do nothing
}
if (p_from->reference()) {
if (p_base->refcount.unref()) {
memdelete(p_base);
}
return p_from;
} else {
return p_base; //keep, could not reference new
}
}
static _FORCE_INLINE_ void destroy(PackedArrayRefBase *p_array) {
if (p_array->refcount.unref()) {
memdelete(p_array);
}
}
_FORCE_INLINE_ virtual ~PackedArrayRefBase() {} //needs virtual destructor, but make inline
};
template <typename T>
struct PackedArrayRef : public PackedArrayRefBase {
Vector<T> array;
static _FORCE_INLINE_ PackedArrayRef<T> *create() {
return memnew(PackedArrayRef<T>);
}
static _FORCE_INLINE_ PackedArrayRef<T> *create(const Vector<T> &p_from) {
return memnew(PackedArrayRef<T>(p_from));
}
static _FORCE_INLINE_ const Vector<T> &get_array(PackedArrayRefBase *p_base) {
return static_cast<PackedArrayRef<T> *>(p_base)->array;
}
static _FORCE_INLINE_ Vector<T> *get_array_ptr(const PackedArrayRefBase *p_base) {
return &const_cast<PackedArrayRef<T> *>(static_cast<const PackedArrayRef<T> *>(p_base))->array;
}
_FORCE_INLINE_ PackedArrayRef(const Vector<T> &p_from) {
array = p_from;
refcount.init();
}
_FORCE_INLINE_ PackedArrayRef() {
refcount.init();
}
};
/* end of array helpers */
_ALWAYS_INLINE_ ObjData &_get_obj();
_ALWAYS_INLINE_ const ObjData &_get_obj() const;
union {
bool _bool;
int64_t _int;
double _float;
Transform2D *_transform2d;
::AABB *_aabb;
Basis *_basis;
Transform3D *_transform3d;
Projection *_projection;
PackedArrayRefBase *packed_array;
void *_ptr; //generic pointer
uint8_t _mem[sizeof(ObjData) > (sizeof(real_t) * 4) ? sizeof(ObjData) : (sizeof(real_t) * 4)]{ 0 };
} _data alignas(8);
void reference(const Variant &p_variant);
static bool initialize_ref(Object *p_object);
void _clear_internal();
_FORCE_INLINE_ void clear() {
static const bool needs_deinit[Variant::VARIANT_MAX] = {
false, //NIL,
false, //BOOL,
false, //INT,
false, //FLOAT,
true, //STRING,
false, //VECTOR2,
false, //VECTOR2I,
false, //RECT2,
false, //RECT2I,
false, //VECTOR3,
false, //VECTOR3I,
true, //TRANSFORM2D,
false, //VECTOR4,
false, //VECTOR4I,
false, //PLANE,
false, //QUATERNION,
true, //AABB,
true, //BASIS,
true, //TRANSFORM,
true, //PROJECTION,
// misc types
false, //COLOR,
true, //STRING_NAME,
true, //NODE_PATH,
false, //RID,
true, //OBJECT,
true, //CALLABLE,
true, //SIGNAL,
true, //DICTIONARY,
true, //ARRAY,
// typed arrays
true, //PACKED_BYTE_ARRAY,
true, //PACKED_INT32_ARRAY,
true, //PACKED_INT64_ARRAY,
true, //PACKED_FLOAT32_ARRAY,
true, //PACKED_FLOAT64_ARRAY,
true, //PACKED_STRING_ARRAY,
true, //PACKED_VECTOR2_ARRAY,
true, //PACKED_VECTOR3_ARRAY,
true, //PACKED_COLOR_ARRAY,
true, //PACKED_VECTOR4_ARRAY,
};
if (unlikely(needs_deinit[type])) { // Make it fast for types that don't need deinit.
_clear_internal();
}
type = NIL;
}
static void _register_variant_operators();
static void _unregister_variant_operators();
static void _register_variant_methods();
static void _unregister_variant_methods();
static void _register_variant_setters_getters();
static void _unregister_variant_setters_getters();
static void _register_variant_constructors();
static void _unregister_variant_destructors();
static void _register_variant_destructors();
static void _unregister_variant_constructors();
static void _register_variant_utility_functions();
static void _unregister_variant_utility_functions();
void _variant_call_error(const String &p_method, Callable::CallError &error);
// Avoid accidental conversion. If you reached this point, it's because you most likely forgot to dereference
// a Variant pointer (so add * like this: *variant_pointer).
Variant(const Variant *) {}
Variant(const Variant **) {}
public:
_FORCE_INLINE_ Type get_type() const {
return type;
}
static String get_type_name(Variant::Type p_type);
static bool can_convert(Type p_type_from, Type p_type_to);
static bool can_convert_strict(Type p_type_from, Type p_type_to);
static bool is_type_shared(Variant::Type p_type);
bool is_ref_counted() const;
_FORCE_INLINE_ bool is_num() const {
return type == INT || type == FLOAT;
}
_FORCE_INLINE_ bool is_string() const {
return type == STRING || type == STRING_NAME;
}
_FORCE_INLINE_ bool is_array() const {
return type >= ARRAY;
}
bool is_shared() const;
bool is_zero() const;
bool is_one() const;
bool is_null() const;
bool is_read_only() const;
// Make sure Variant is not implicitly cast when accessing it with bracket notation (GH-49469).
Variant &operator[](const Variant &p_key) = delete;
const Variant &operator[](const Variant &p_key) const = delete;
operator bool() const;
operator int64_t() const;
operator int32_t() const;
operator int16_t() const;
operator int8_t() const;
operator uint64_t() const;
operator uint32_t() const;
operator uint16_t() const;
operator uint8_t() const;
operator ObjectID() const;
operator char32_t() const;
operator float() const;
operator double() const;
operator String() const;
operator StringName() const;
operator Vector2() const;
operator Vector2i() const;
operator Rect2() const;
operator Rect2i() const;
operator Vector3() const;
operator Vector3i() const;
operator Vector4() const;
operator Vector4i() const;
operator Plane() const;
operator ::AABB() const;
operator Quaternion() const;
operator Basis() const;
operator Transform2D() const;
operator Transform3D() const;
operator Projection() const;
operator Color() const;
operator NodePath() const;
operator ::RID() const;
operator Object *() const;
operator Callable() const;
operator Signal() const;
operator Dictionary() const;
operator Array() const;
operator PackedByteArray() const;
operator PackedInt32Array() const;
operator PackedInt64Array() const;
operator PackedFloat32Array() const;
operator PackedFloat64Array() const;
operator PackedStringArray() const;
operator PackedVector3Array() const;
operator PackedVector2Array() const;
operator PackedColorArray() const;
operator PackedVector4Array() const;
operator Vector<::RID>() const;
operator Vector<Plane>() const;
operator Vector<Face3>() const;
operator Vector<Variant>() const;
operator Vector<StringName>() const;
// some core type enums to convert to
operator Side() const;
operator Orientation() const;
operator IPAddress() const;
Object *get_validated_object() const;
Object *get_validated_object_with_check(bool &r_previously_freed) const;
Variant(bool p_bool);
Variant(int64_t p_int64);
Variant(int32_t p_int32);
Variant(int16_t p_int16);
Variant(int8_t p_int8);
Variant(uint64_t p_uint64);
Variant(uint32_t p_uint32);
Variant(uint16_t p_uint16);
Variant(uint8_t p_uint8);
Variant(float p_float);
Variant(double p_double);
Variant(const ObjectID &p_id);
Variant(const String &p_string);
Variant(const StringName &p_string);
Variant(const char *const p_cstring);
Variant(const char32_t *p_wstring);
Variant(const Vector2 &p_vector2);
Variant(const Vector2i &p_vector2i);
Variant(const Rect2 &p_rect2);
Variant(const Rect2i &p_rect2i);
Variant(const Vector3 &p_vector3);
Variant(const Vector3i &p_vector3i);
Variant(const Vector4 &p_vector4);
Variant(const Vector4i &p_vector4i);
Variant(const Plane &p_plane);
Variant(const ::AABB &p_aabb);
Variant(const Quaternion &p_quat);
Variant(const Basis &p_matrix);
Variant(const Transform2D &p_transform);
Variant(const Transform3D &p_transform);
Variant(const Projection &p_projection);
Variant(const Color &p_color);
Variant(const NodePath &p_node_path);
Variant(const ::RID &p_rid);
Variant(const Object *p_object);
Variant(const Callable &p_callable);
Variant(const Signal &p_signal);
Variant(const Dictionary &p_dictionary);
Variant(const Array &p_array);
Variant(const PackedByteArray &p_byte_array);
Variant(const PackedInt32Array &p_int32_array);
Variant(const PackedInt64Array &p_int64_array);
Variant(const PackedFloat32Array &p_float32_array);
Variant(const PackedFloat64Array &p_float64_array);
Variant(const PackedStringArray &p_string_array);
Variant(const PackedVector2Array &p_vector2_array);
Variant(const PackedVector3Array &p_vector3_array);
Variant(const PackedColorArray &p_color_array);
Variant(const PackedVector4Array &p_vector4_array);
Variant(const Vector<::RID> &p_array); // helper
Variant(const Vector<Plane> &p_array); // helper
Variant(const Vector<Face3> &p_face_array);
Variant(const Vector<Variant> &p_array);
Variant(const Vector<StringName> &p_array);
Variant(const IPAddress &p_address);
#define VARIANT_ENUM_CLASS_CONSTRUCTOR(m_enum) \
Variant(m_enum p_value) : \
type(INT) { \
_data._int = (int64_t)p_value; \
}
// Only enum classes that need to be bound need this to be defined.
VARIANT_ENUM_CLASS_CONSTRUCTOR(EulerOrder)
VARIANT_ENUM_CLASS_CONSTRUCTOR(JoyAxis)
VARIANT_ENUM_CLASS_CONSTRUCTOR(JoyButton)
VARIANT_ENUM_CLASS_CONSTRUCTOR(Key)
VARIANT_ENUM_CLASS_CONSTRUCTOR(KeyLocation)
VARIANT_ENUM_CLASS_CONSTRUCTOR(MIDIMessage)
VARIANT_ENUM_CLASS_CONSTRUCTOR(MouseButton)
#undef VARIANT_ENUM_CLASS_CONSTRUCTOR
// If this changes the table in variant_op must be updated
enum Operator {
//comparison
OP_EQUAL,
OP_NOT_EQUAL,
OP_LESS,
OP_LESS_EQUAL,
OP_GREATER,
OP_GREATER_EQUAL,
//mathematic
OP_ADD,
OP_SUBTRACT,
OP_MULTIPLY,
OP_DIVIDE,
OP_NEGATE,
OP_POSITIVE,
OP_MODULE,
OP_POWER,
//bitwise
OP_SHIFT_LEFT,
OP_SHIFT_RIGHT,
OP_BIT_AND,
OP_BIT_OR,
OP_BIT_XOR,
OP_BIT_NEGATE,
//logic
OP_AND,
OP_OR,
OP_XOR,
OP_NOT,
//containment
OP_IN,
OP_MAX
};
static String get_operator_name(Operator p_op);
static void evaluate(const Operator &p_op, const Variant &p_a, const Variant &p_b, Variant &r_ret, bool &r_valid);
static _FORCE_INLINE_ Variant evaluate(const Operator &p_op, const Variant &p_a, const Variant &p_b) {
bool valid = true;
Variant res;
evaluate(p_op, p_a, p_b, res, valid);
return res;
}
static Variant::Type get_operator_return_type(Operator p_operator, Type p_type_a, Type p_type_b);
typedef void (*ValidatedOperatorEvaluator)(const Variant *left, const Variant *right, Variant *r_ret);
static ValidatedOperatorEvaluator get_validated_operator_evaluator(Operator p_operator, Type p_type_a, Type p_type_b);
typedef void (*PTROperatorEvaluator)(const void *left, const void *right, void *r_ret);
static PTROperatorEvaluator get_ptr_operator_evaluator(Operator p_operator, Type p_type_a, Type p_type_b);
void zero();
Variant duplicate(bool p_deep = false) const;
Variant recursive_duplicate(bool p_deep, int recursion_count) const;
/* Built-In Methods */
typedef void (*ValidatedBuiltInMethod)(Variant *base, const Variant **p_args, int p_argcount, Variant *r_ret);
typedef void (*PTRBuiltInMethod)(void *p_base, const void **p_args, void *r_ret, int p_argcount);
static bool has_builtin_method(Variant::Type p_type, const StringName &p_method);
static ValidatedBuiltInMethod get_validated_builtin_method(Variant::Type p_type, const StringName &p_method);
static PTRBuiltInMethod get_ptr_builtin_method(Variant::Type p_type, const StringName &p_method);
static MethodInfo get_builtin_method_info(Variant::Type p_type, const StringName &p_method);
static int get_builtin_method_argument_count(Variant::Type p_type, const StringName &p_method);
static Variant::Type get_builtin_method_argument_type(Variant::Type p_type, const StringName &p_method, int p_argument);
static String get_builtin_method_argument_name(Variant::Type p_type, const StringName &p_method, int p_argument);
static Vector<Variant> get_builtin_method_default_arguments(Variant::Type p_type, const StringName &p_method);
static bool has_builtin_method_return_value(Variant::Type p_type, const StringName &p_method);
static Variant::Type get_builtin_method_return_type(Variant::Type p_type, const StringName &p_method);
static bool is_builtin_method_const(Variant::Type p_type, const StringName &p_method);
static bool is_builtin_method_static(Variant::Type p_type, const StringName &p_method);
static bool is_builtin_method_vararg(Variant::Type p_type, const StringName &p_method);
static void get_builtin_method_list(Variant::Type p_type, List<StringName> *p_list);
static int get_builtin_method_count(Variant::Type p_type);
static uint32_t get_builtin_method_hash(Variant::Type p_type, const StringName &p_method);
void callp(const StringName &p_method, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error);
template <typename... VarArgs>
Variant call(const StringName &p_method, VarArgs... p_args) {
Variant args[sizeof...(p_args) + 1] = { p_args..., Variant() }; // +1 makes sure zero sized arrays are also supported.
const Variant *argptrs[sizeof...(p_args) + 1];
for (uint32_t i = 0; i < sizeof...(p_args); i++) {
argptrs[i] = &args[i];
}
Callable::CallError cerr;
Variant ret;
callp(p_method, sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args), ret, cerr);
if (cerr.error != Callable::CallError::CALL_OK) {
_variant_call_error(p_method, cerr);
}
return ret;
}
void call_const(const StringName &p_method, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error);
static void call_static(Variant::Type p_type, const StringName &p_method, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error);
static String get_call_error_text(const StringName &p_method, const Variant **p_argptrs, int p_argcount, const Callable::CallError &ce);
static String get_call_error_text(Object *p_base, const StringName &p_method, const Variant **p_argptrs, int p_argcount, const Callable::CallError &ce);
static String get_callable_error_text(const Callable &p_callable, const Variant **p_argptrs, int p_argcount, const Callable::CallError &ce);
//dynamic (includes Object)
void get_method_list(List<MethodInfo> *p_list) const;
bool has_method(const StringName &p_method) const;
/* Constructors */
typedef void (*ValidatedConstructor)(Variant *r_base, const Variant **p_args);
typedef void (*PTRConstructor)(void *base, const void **p_args);
static int get_constructor_count(Variant::Type p_type);
static ValidatedConstructor get_validated_constructor(Variant::Type p_type, int p_constructor);
static PTRConstructor get_ptr_constructor(Variant::Type p_type, int p_constructor);
static int get_constructor_argument_count(Variant::Type p_type, int p_constructor);
static Variant::Type get_constructor_argument_type(Variant::Type p_type, int p_constructor, int p_argument);
static String get_constructor_argument_name(Variant::Type p_type, int p_constructor, int p_argument);
static void construct(Variant::Type, Variant &base, const Variant **p_args, int p_argcount, Callable::CallError &r_error);
static void get_constructor_list(Type p_type, List<MethodInfo> *r_list); //convenience
/* Destructors */
// Only ptrcall is available.
typedef void (*PTRDestructor)(void *base);
static PTRDestructor get_ptr_destructor(Variant::Type p_type);
static bool has_destructor(Variant::Type p_type);
/* Properties */
void set_named(const StringName &p_member, const Variant &p_value, bool &r_valid);
Variant get_named(const StringName &p_member, bool &r_valid) const;
typedef void (*ValidatedSetter)(Variant *base, const Variant *value);
typedef void (*ValidatedGetter)(const Variant *base, Variant *value);
static bool has_member(Variant::Type p_type, const StringName &p_member);
static Variant::Type get_member_type(Variant::Type p_type, const StringName &p_member);
static void get_member_list(Type p_type, List<StringName> *r_members);
static int get_member_count(Type p_type);
static ValidatedSetter get_member_validated_setter(Variant::Type p_type, const StringName &p_member);
static ValidatedGetter get_member_validated_getter(Variant::Type p_type, const StringName &p_member);
typedef void (*PTRSetter)(void *base, const void *value);
typedef void (*PTRGetter)(const void *base, void *value);
static PTRSetter get_member_ptr_setter(Variant::Type p_type, const StringName &p_member);
static PTRGetter get_member_ptr_getter(Variant::Type p_type, const StringName &p_member);
/* Indexing */
static bool has_indexing(Variant::Type p_type);
static Variant::Type get_indexed_element_type(Variant::Type p_type);
static uint32_t get_indexed_element_usage(Variant::Type p_type);
typedef void (*ValidatedIndexedSetter)(Variant *base, int64_t index, const Variant *value, bool *oob);
typedef void (*ValidatedIndexedGetter)(const Variant *base, int64_t index, Variant *value, bool *oob);
static ValidatedIndexedSetter get_member_validated_indexed_setter(Variant::Type p_type);
static ValidatedIndexedGetter get_member_validated_indexed_getter(Variant::Type p_type);
typedef void (*PTRIndexedSetter)(void *base, int64_t index, const void *value);
typedef void (*PTRIndexedGetter)(const void *base, int64_t index, void *value);
static PTRIndexedSetter get_member_ptr_indexed_setter(Variant::Type p_type);
static PTRIndexedGetter get_member_ptr_indexed_getter(Variant::Type p_type);
void set_indexed(int64_t p_index, const Variant &p_value, bool &r_valid, bool &r_oob);
Variant get_indexed(int64_t p_index, bool &r_valid, bool &r_oob) const;
uint64_t get_indexed_size() const;
/* Keying */
static bool is_keyed(Variant::Type p_type);
typedef void (*ValidatedKeyedSetter)(Variant *base, const Variant *key, const Variant *value, bool *valid);
typedef void (*ValidatedKeyedGetter)(const Variant *base, const Variant *key, Variant *value, bool *valid);
typedef bool (*ValidatedKeyedChecker)(const Variant *base, const Variant *key, bool *valid);
static ValidatedKeyedSetter get_member_validated_keyed_setter(Variant::Type p_type);
static ValidatedKeyedGetter get_member_validated_keyed_getter(Variant::Type p_type);
static ValidatedKeyedChecker get_member_validated_keyed_checker(Variant::Type p_type);
typedef void (*PTRKeyedSetter)(void *base, const void *key, const void *value);
typedef void (*PTRKeyedGetter)(const void *base, const void *key, void *value);
typedef uint32_t (*PTRKeyedChecker)(const void *base, const void *key);
static PTRKeyedSetter get_member_ptr_keyed_setter(Variant::Type p_type);
static PTRKeyedGetter get_member_ptr_keyed_getter(Variant::Type p_type);
static PTRKeyedChecker get_member_ptr_keyed_checker(Variant::Type p_type);
void set_keyed(const Variant &p_key, const Variant &p_value, bool &r_valid);
Variant get_keyed(const Variant &p_key, bool &r_valid) const;
bool has_key(const Variant &p_key, bool &r_valid) const;
/* Generic */
enum VariantSetError {
SET_OK,
SET_KEYED_ERR,
SET_NAMED_ERR,
SET_INDEXED_ERR
};
enum VariantGetError {
GET_OK,
GET_KEYED_ERR,
GET_NAMED_ERR,
GET_INDEXED_ERR
};
void set(const Variant &p_index, const Variant &p_value, bool *r_valid = nullptr, VariantSetError *err_code = nullptr);
Variant get(const Variant &p_index, bool *r_valid = nullptr, VariantGetError *err_code = nullptr) const;
bool in(const Variant &p_index, bool *r_valid = nullptr) const;
bool iter_init(Variant &r_iter, bool &r_valid) const;
bool iter_next(Variant &r_iter, bool &r_valid) const;
Variant iter_get(const Variant &r_iter, bool &r_valid) const;
void get_property_list(List<PropertyInfo> *p_list) const;
static void call_utility_function(const StringName &p_name, Variant *r_ret, const Variant **p_args, int p_argcount, Callable::CallError &r_error);
static bool has_utility_function(const StringName &p_name);
typedef void (*ValidatedUtilityFunction)(Variant *r_ret, const Variant **p_args, int p_argcount);
typedef void (*PTRUtilityFunction)(void *r_ret, const void **p_args, int p_argcount);
static ValidatedUtilityFunction get_validated_utility_function(const StringName &p_name);
static PTRUtilityFunction get_ptr_utility_function(const StringName &p_name);
enum UtilityFunctionType {
UTILITY_FUNC_TYPE_MATH,
UTILITY_FUNC_TYPE_RANDOM,
UTILITY_FUNC_TYPE_GENERAL,
};
static UtilityFunctionType get_utility_function_type(const StringName &p_name);
static MethodInfo get_utility_function_info(const StringName &p_name);
static int get_utility_function_argument_count(const StringName &p_name);
static Variant::Type get_utility_function_argument_type(const StringName &p_name, int p_arg);
static String get_utility_function_argument_name(const StringName &p_name, int p_arg);
static bool has_utility_function_return_value(const StringName &p_name);
static Variant::Type get_utility_function_return_type(const StringName &p_name);
static bool is_utility_function_vararg(const StringName &p_name);
static uint32_t get_utility_function_hash(const StringName &p_name);
static void get_utility_function_list(List<StringName> *r_functions);
static int get_utility_function_count();
//argsVariant call()
bool operator==(const Variant &p_variant) const;
bool operator!=(const Variant &p_variant) const;
bool operator<(const Variant &p_variant) const;
uint32_t hash() const;
uint32_t recursive_hash(int recursion_count) const;
// By default, performs a semantic comparison. Otherwise, numeric/binary comparison (if appropriate).
bool hash_compare(const Variant &p_variant, int recursion_count = 0, bool semantic_comparison = true) const;
bool identity_compare(const Variant &p_variant) const;
bool booleanize() const;
String stringify(int recursion_count = 0) const;
String to_json_string() const;
void static_assign(const Variant &p_variant);
static void get_constants_for_type(Variant::Type p_type, List<StringName> *p_constants);
static int get_constants_count_for_type(Variant::Type p_type);
static bool has_constant(Variant::Type p_type, const StringName &p_value);
static Variant get_constant_value(Variant::Type p_type, const StringName &p_value, bool *r_valid = nullptr);
static void get_enums_for_type(Variant::Type p_type, List<StringName> *p_enums);
static void get_enumerations_for_enum(Variant::Type p_type, const StringName &p_enum_name, List<StringName> *p_enumerations);
static int get_enum_value(Variant::Type p_type, const StringName &p_enum_name, const StringName &p_enumeration, bool *r_valid = nullptr);
typedef String (*ObjectDeConstruct)(const Variant &p_object, void *ud);
typedef void (*ObjectConstruct)(const String &p_text, void *ud, Variant &r_value);
String get_construct_string() const;
static void construct_from_string(const String &p_string, Variant &r_value, ObjectConstruct p_obj_construct = nullptr, void *p_construct_ud = nullptr);
void operator=(const Variant &p_variant); // only this is enough for all the other types
static void register_types();
static void unregister_types();
Variant(const Variant &p_variant);
_FORCE_INLINE_ Variant() :
type(NIL) {}
_FORCE_INLINE_ ~Variant() {
clear();
}
};
//typedef Dictionary Dictionary; no
//typedef Array Array;
template <typename... VarArgs>
Vector<Variant> varray(VarArgs... p_args) {
Vector<Variant> v;
Variant args[sizeof...(p_args) + 1] = { p_args..., Variant() }; // +1 makes sure zero sized arrays are also supported.
uint32_t argc = sizeof...(p_args);
if (argc > 0) {
v.resize(argc);
Variant *vw = v.ptrw();
for (uint32_t i = 0; i < argc; i++) {
vw[i] = args[i];
}
}
return v;
}
struct VariantHasher {
static _FORCE_INLINE_ uint32_t hash(const Variant &p_variant) { return p_variant.hash(); }
};
struct VariantComparator {
static _FORCE_INLINE_ bool compare(const Variant &p_lhs, const Variant &p_rhs) { return p_lhs.hash_compare(p_rhs); }
};
struct StringLikeVariantComparator {
static bool compare(const Variant &p_lhs, const Variant &p_rhs);
};
Variant::ObjData &Variant::_get_obj() {
return *reinterpret_cast<ObjData *>(&_data._mem[0]);
}
const Variant::ObjData &Variant::_get_obj() const {
return *reinterpret_cast<const ObjData *>(&_data._mem[0]);
}
template <typename... VarArgs>
String vformat(const String &p_text, const VarArgs... p_args) {
Variant args[sizeof...(p_args) + 1] = { p_args..., Variant() }; // +1 makes sure zero sized arrays are also supported.
Array args_array;
args_array.resize(sizeof...(p_args));
for (uint32_t i = 0; i < sizeof...(p_args); i++) {
args_array[i] = args[i];
}
bool error = false;
String fmt = p_text.sprintf(args_array, &error);
ERR_FAIL_COND_V_MSG(error, String(), fmt);
return fmt;
}
template <typename... VarArgs>
Variant Callable::call(VarArgs... p_args) const {
Variant args[sizeof...(p_args) + 1] = { p_args..., 0 }; // +1 makes sure zero sized arrays are also supported.
const Variant *argptrs[sizeof...(p_args) + 1];
for (uint32_t i = 0; i < sizeof...(p_args); i++) {
argptrs[i] = &args[i];
}
Variant ret;
CallError ce;
callp(sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args), ret, ce);
return ret;
}
template <typename... VarArgs>
Callable Callable::bind(VarArgs... p_args) const {
Variant args[sizeof...(p_args) + 1] = { p_args..., Variant() }; // +1 makes sure zero sized arrays are also supported.
const Variant *argptrs[sizeof...(p_args) + 1];
for (uint32_t i = 0; i < sizeof...(p_args); i++) {
argptrs[i] = &args[i];
}
return bindp(sizeof...(p_args) == 0 ? nullptr : (const Variant **)argptrs, sizeof...(p_args));
}
Variant &Array::Iterator::operator*() const {
if (unlikely(read_only)) {
*read_only = *element_ptr;
return *read_only;
}
return *element_ptr;
}
Variant *Array::Iterator::operator->() const {
if (unlikely(read_only)) {
*read_only = *element_ptr;
return read_only;
}
return element_ptr;
}
Array::Iterator &Array::Iterator::operator++() {
element_ptr++;
return *this;
}
Array::Iterator &Array::Iterator::operator--() {
element_ptr--;
return *this;
}
const Variant &Array::ConstIterator::operator*() const {
if (unlikely(read_only)) {
*read_only = *element_ptr;
return *read_only;
}
return *element_ptr;
}
const Variant *Array::ConstIterator::operator->() const {
if (unlikely(read_only)) {
*read_only = *element_ptr;
return read_only;
}
return element_ptr;
}
Array::ConstIterator &Array::ConstIterator::operator++() {
element_ptr++;
return *this;
}
Array::ConstIterator &Array::ConstIterator::operator--() {
element_ptr--;
return *this;
}
#endif // VARIANT_H
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