godot-cpp/src/variant/variant.cpp

/*************************************************************************/
/*  variant.cpp                                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#include <godot_cpp/variant/variant.hpp>

#include <godot_cpp/godot.hpp>

#include <godot_cpp/core/binder_common.hpp>
#include <godot_cpp/core/defs.hpp>

#include <utility>

namespace godot {

GDNativeVariantFromTypeConstructorFunc Variant::from_type_constructor[Variant::VARIANT_MAX]{};
GDNativeTypeFromVariantConstructorFunc Variant::to_type_constructor[Variant::VARIANT_MAX]{};

void Variant::init_bindings() {
	// Start from 1 to skip NIL.
	for (int i = 1; i < VARIANT_MAX; i++) {
		from_type_constructor[i] = internal::gdn_interface->get_variant_from_type_constructor((GDNativeVariantType)i);
		to_type_constructor[i] = internal::gdn_interface->get_variant_to_type_constructor((GDNativeVariantType)i);
	}

	String::init_bindings();
	StringName::init_bindings();
	NodePath::init_bindings();
	RID::init_bindings();
	Callable::init_bindings();
	Signal::init_bindings();
	Dictionary::init_bindings();
	Array::init_bindings();
	PackedByteArray::init_bindings();
	PackedInt32Array::init_bindings();
	PackedInt64Array::init_bindings();
	PackedFloat32Array::init_bindings();
	PackedFloat64Array::init_bindings();
	PackedStringArray::init_bindings();
	PackedVector2Array::init_bindings();
	PackedVector3Array::init_bindings();
	PackedColorArray::init_bindings();
}

Variant::Variant() {
	internal::gdn_interface->variant_new_nil(ptr());
}

Variant::Variant(const GDNativeVariantPtr native_ptr) {
	internal::gdn_interface->variant_new_copy(ptr(), native_ptr);
}

Variant::Variant(const Variant &other) {
	internal::gdn_interface->variant_new_copy(ptr(), other.ptr());
}

Variant::Variant(Variant &&other) {
	std::swap(opaque, other.opaque);
}

Variant::Variant(bool v) {
	GDNativeBool encoded;
	PtrToArg<bool>::encode(v, &encoded);
	from_type_constructor[BOOL](ptr(), &encoded);
}

Variant::Variant(int64_t v) {
	GDNativeInt encoded;
	PtrToArg<int64_t>::encode(v, &encoded);
	from_type_constructor[INT](ptr(), &encoded);
}

Variant::Variant(double v) {
	double encoded;
	PtrToArg<double>::encode(v, &encoded);
	from_type_constructor[FLOAT](ptr(), &encoded);
}

Variant::Variant(const String &v) {
	from_type_constructor[STRING](ptr(), v.ptr());
}

Variant::Variant(const Vector2 &v) {
	from_type_constructor[VECTOR2](ptr(), v.ptr());
}

Variant::Variant(const Vector2i &v) {
	from_type_constructor[VECTOR2I](ptr(), v.ptr());
}

Variant::Variant(const Rect2 &v) {
	from_type_constructor[RECT2](ptr(), v.ptr());
}

Variant::Variant(const Rect2i &v) {
	from_type_constructor[RECT2I](ptr(), v.ptr());
}

Variant::Variant(const Vector3 &v) {
	from_type_constructor[VECTOR3](ptr(), v.ptr());
}

Variant::Variant(const Vector3i &v) {
	from_type_constructor[VECTOR3I](ptr(), v.ptr());
}

Variant::Variant(const Transform2D &v) {
	from_type_constructor[TRANSFORM2D](ptr(), v.ptr());
}

Variant::Variant(const Plane &v) {
	from_type_constructor[PLANE](ptr(), v.ptr());
}

Variant::Variant(const Quaternion &v) {
	from_type_constructor[QUATERNION](ptr(), v.ptr());
}

Variant::Variant(const godot::AABB &v) {
	from_type_constructor[AABB](ptr(), v.ptr());
}

Variant::Variant(const Basis &v) {
	from_type_constructor[BASIS](ptr(), v.ptr());
}

Variant::Variant(const Transform3D &v) {
	from_type_constructor[TRANSFORM3D](ptr(), v.ptr());
}

Variant::Variant(const Color &v) {
	from_type_constructor[COLOR](ptr(), v.ptr());
}

Variant::Variant(const StringName &v) {
	from_type_constructor[STRING_NAME](ptr(), v.ptr());
}

Variant::Variant(const NodePath &v) {
	from_type_constructor[NODE_PATH](ptr(), v.ptr());
}

Variant::Variant(const godot::RID &v) {
	from_type_constructor[RID](ptr(), v.ptr());
}

Variant::Variant(const Object *v) {
	from_type_constructor[OBJECT](ptr(), const_cast<GodotObject **>(&v->_owner));
}

Variant::Variant(const Callable &v) {
	from_type_constructor[CALLABLE](ptr(), v.ptr());
}

Variant::Variant(const Signal &v) {
	from_type_constructor[SIGNAL](ptr(), v.ptr());
}

Variant::Variant(const Dictionary &v) {
	from_type_constructor[DICTIONARY](ptr(), v.ptr());
}

Variant::Variant(const Array &v) {
	from_type_constructor[ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedByteArray &v) {
	from_type_constructor[PACKED_BYTE_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedInt32Array &v) {
	from_type_constructor[PACKED_INT32_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedInt64Array &v) {
	from_type_constructor[PACKED_INT64_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedFloat32Array &v) {
	from_type_constructor[PACKED_FLOAT32_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedFloat64Array &v) {
	from_type_constructor[PACKED_FLOAT64_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedStringArray &v) {
	from_type_constructor[PACKED_STRING_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedVector2Array &v) {
	from_type_constructor[PACKED_VECTOR2_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedVector3Array &v) {
	from_type_constructor[PACKED_VECTOR3_ARRAY](ptr(), v.ptr());
}

Variant::Variant(const PackedColorArray &v) {
	from_type_constructor[PACKED_COLOR_ARRAY](ptr(), v.ptr());
}

Variant::~Variant() {
	internal::gdn_interface->variant_destroy(ptr());
}

Variant::operator bool() const {
	GDNativeBool result;
	to_type_constructor[BOOL](&result, ptr());
	return PtrToArg<bool>::convert(&result);
}

Variant::operator int64_t() const {
	GDNativeInt result;
	to_type_constructor[INT](&result, ptr());
	return PtrToArg<int64_t>::convert(&result);
}

Variant::operator int32_t() const {
	return static_cast<int32_t>(operator int64_t());
}

Variant::operator uint64_t() const {
	return static_cast<uint64_t>(operator int64_t());
}

Variant::operator uint32_t() const {
	return static_cast<uint32_t>(operator int64_t());
}

Variant::operator double() const {
	double result;
	to_type_constructor[FLOAT](&result, ptr());
	return PtrToArg<double>::convert(&result);
}

Variant::operator float() const {
	return static_cast<float>(operator double());
}

Variant::operator String() const {
	String result;
	to_type_constructor[STRING](result.ptr(), ptr());
	return result;
}

Variant::operator Vector2() const {
	Vector2 result;
	to_type_constructor[VECTOR2](result.ptr(), ptr());
	return result;
}

Variant::operator Vector2i() const {
	Vector2i result;
	to_type_constructor[VECTOR2I](result.ptr(), ptr());
	return result;
}

Variant::operator Rect2() const {
	Rect2 result;
	to_type_constructor[RECT2](result.ptr(), ptr());
	return result;
}

Variant::operator Rect2i() const {
	Rect2i result;
	to_type_constructor[RECT2I](result.ptr(), ptr());
	return result;
}

Variant::operator Vector3() const {
	Vector3 result;
	to_type_constructor[VECTOR3](result.ptr(), ptr());
	return result;
}

Variant::operator Vector3i() const {
	Vector3i result;
	to_type_constructor[VECTOR3I](result.ptr(), ptr());
	return result;
}

Variant::operator Transform2D() const {
	Transform2D result;
	to_type_constructor[TRANSFORM2D](result.ptr(), ptr());
	return result;
}

Variant::operator Plane() const {
	Plane result;
	to_type_constructor[PLANE](result.ptr(), ptr());
	return result;
}

Variant::operator Quaternion() const {
	Quaternion result;
	to_type_constructor[QUATERNION](result.ptr(), ptr());
	return result;
}

Variant::operator godot::AABB() const {
	godot::AABB result;
	to_type_constructor[AABB](result.ptr(), ptr());
	return result;
}

Variant::operator Basis() const {
	Basis result;
	to_type_constructor[BASIS](result.ptr(), ptr());
	return result;
}

Variant::operator Transform3D() const {
	Transform3D result;
	to_type_constructor[TRANSFORM3D](result.ptr(), ptr());
	return result;
}

Variant::operator Color() const {
	Color result;
	to_type_constructor[COLOR](result.ptr(), ptr());
	return result;
}

Variant::operator StringName() const {
	StringName result;
	to_type_constructor[STRING_NAME](result.ptr(), ptr());
	return result;
}

Variant::operator NodePath() const {
	NodePath result;
	to_type_constructor[NODE_PATH](result.ptr(), ptr());
	return result;
}

Variant::operator godot::RID() const {
	godot::RID result;
	to_type_constructor[RID](result.ptr(), ptr());
	return result;
}

Variant::operator Object *() const {
	GodotObject *obj;
	to_type_constructor[OBJECT](&obj, ptr());
	if (obj == nullptr) {
		return nullptr;
	}
	return reinterpret_cast<Object *>(internal::gdn_interface->object_get_instance_binding(obj, internal::token, &Object::___binding_callbacks));
}

Variant::operator Callable() const {
	Callable result;
	to_type_constructor[CALLABLE](result.ptr(), ptr());
	return result;
}

Variant::operator Signal() const {
	Signal result;
	to_type_constructor[SIGNAL](result.ptr(), ptr());
	return result;
}

Variant::operator Dictionary() const {
	Dictionary result;
	to_type_constructor[DICTIONARY](result.ptr(), ptr());
	return result;
}

Variant::operator Array() const {
	Array result;
	to_type_constructor[ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedByteArray() const {
	PackedByteArray result;
	to_type_constructor[PACKED_BYTE_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedInt32Array() const {
	PackedInt32Array result;
	to_type_constructor[PACKED_INT32_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedInt64Array() const {
	PackedInt64Array result;
	to_type_constructor[PACKED_INT64_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedFloat32Array() const {
	PackedFloat32Array result;
	to_type_constructor[PACKED_FLOAT32_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedFloat64Array() const {
	PackedFloat64Array result;
	to_type_constructor[PACKED_FLOAT64_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedStringArray() const {
	PackedStringArray result;
	to_type_constructor[PACKED_STRING_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedVector2Array() const {
	PackedVector2Array result;
	to_type_constructor[PACKED_VECTOR2_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedVector3Array() const {
	PackedVector3Array result;
	to_type_constructor[PACKED_VECTOR3_ARRAY](result.ptr(), ptr());
	return result;
}

Variant::operator PackedColorArray() const {
	PackedColorArray result;
	to_type_constructor[PACKED_COLOR_ARRAY](result.ptr(), ptr());
	return result;
}

Variant &Variant::operator=(const Variant &other) {
	clear();
	internal::gdn_interface->variant_new_copy(ptr(), other.ptr());
	return *this;
}

Variant &Variant::operator=(Variant &&other) {
	std::swap(opaque, other.opaque);
	return *this;
}

bool Variant::operator==(const Variant &other) const {
	if (get_type() != other.get_type()) {
		return false;
	}
	bool valid = false;
	Variant result;
	evaluate(OP_EQUAL, *this, other, result, valid);
	return result.operator bool();
}

bool Variant::operator!=(const Variant &other) const {
	if (get_type() != other.get_type()) {
		return true;
	}
	bool valid = false;
	Variant result;
	evaluate(OP_NOT_EQUAL, *this, other, result, valid);
	return result.operator bool();
}

bool Variant::operator<(const Variant &other) const {
	if (get_type() != other.get_type()) {
		return get_type() < other.get_type();
	}
	bool valid = false;
	Variant result;
	evaluate(OP_LESS, *this, other, result, valid);
	return result.operator bool();
}

void Variant::call(const StringName &method, const Variant **args, int argcount, Variant &r_ret, GDNativeCallError &r_error) {
	internal::gdn_interface->variant_call(ptr(), method.ptr(), reinterpret_cast<const GDNativeVariantPtr *>(const_cast<Variant **>(args)), argcount, r_ret.ptr(), &r_error);
}

void Variant::call_static(Variant::Type type, const StringName &method, const Variant **args, int argcount, Variant &r_ret, GDNativeCallError &r_error) {
	internal::gdn_interface->variant_call_static(static_cast<GDNativeVariantType>(type), method.ptr(), reinterpret_cast<const GDNativeVariantPtr *>(const_cast<Variant **>(args)), argcount, r_ret.ptr(), &r_error);
}

void Variant::evaluate(const Operator &op, const Variant &a, const Variant &b, Variant &r_ret, bool &r_valid) {
	GDNativeBool valid;
	internal::gdn_interface->variant_evaluate(static_cast<GDNativeVariantOperator>(op), a.ptr(), b.ptr(), r_ret.ptr(), &valid);
	r_valid = PtrToArg<bool>::convert(&valid);
}

void Variant::set(const Variant &key, const Variant &value, bool *r_valid) {
	GDNativeBool valid;
	internal::gdn_interface->variant_set(ptr(), key.ptr(), value.ptr(), &valid);
	if (r_valid) {
		*r_valid = PtrToArg<bool>::convert(&valid);
	}
}

void Variant::set_named(const StringName &name, const Variant &value, bool &r_valid) {
	GDNativeBool valid;
	internal::gdn_interface->variant_set_named(ptr(), name.ptr(), value.ptr(), &valid);
	r_valid = PtrToArg<bool>::convert(&valid);
}

void Variant::set_indexed(int64_t index, const Variant &value, bool &r_valid, bool &r_oob) {
	GDNativeBool valid, oob;
	internal::gdn_interface->variant_set_indexed(ptr(), index, value.ptr(), &valid, &oob);
	r_valid = PtrToArg<bool>::convert(&valid);
	r_oob = PtrToArg<bool>::convert(&oob);
}

void Variant::set_keyed(const Variant &key, const Variant &value, bool &r_valid) {
	GDNativeBool valid;
	internal::gdn_interface->variant_set_keyed(ptr(), key.ptr(), value.ptr(), &valid);
	r_valid = PtrToArg<bool>::convert(&valid);
}

Variant Variant::get(const Variant &key, bool *r_valid) const {
	Variant result;
	GDNativeBool valid;
	internal::gdn_interface->variant_get(ptr(), key.ptr(), result.ptr(), &valid);
	if (r_valid) {
		*r_valid = PtrToArg<bool>::convert(&valid);
	}
	return result;
}

Variant Variant::get_named(const StringName &name, bool &r_valid) const {
	Variant result;
	GDNativeBool valid;
	internal::gdn_interface->variant_get_named(ptr(), name.ptr(), result.ptr(), &valid);
	r_valid = PtrToArg<bool>::convert(&valid);
	return result;
}

Variant Variant::get_indexed(int64_t index, bool &r_valid, bool &r_oob) const {
	Variant result;
	GDNativeBool valid;
	GDNativeBool oob;
	internal::gdn_interface->variant_get_indexed(ptr(), index, result.ptr(), &valid, &oob);
	r_valid = PtrToArg<bool>::convert(&valid);
	r_oob = PtrToArg<bool>::convert(&oob);
	return result;
}

Variant Variant::get_keyed(const Variant &key, bool &r_valid) const {
	Variant result;
	GDNativeBool valid;
	internal::gdn_interface->variant_get_keyed(ptr(), key.ptr(), result.ptr(), &valid);
	r_valid = PtrToArg<bool>::convert(&valid);
	return result;
}

bool Variant::in(const Variant &index, bool *r_valid) const {
	Variant result;
	bool valid;
	evaluate(OP_IN, *this, index, result, valid);
	if (r_valid) {
		*r_valid = valid;
	}
	return result.operator bool();
}

bool Variant::iter_init(Variant &r_iter, bool &r_valid) const {
	GDNativeBool valid;
	internal::gdn_interface->variant_iter_init(ptr(), r_iter.ptr(), &valid);
	return PtrToArg<bool>::convert(&valid);
}

bool Variant::iter_next(Variant &r_iter, bool &r_valid) const {
	GDNativeBool valid;
	internal::gdn_interface->variant_iter_next(ptr(), r_iter.ptr(), &valid);
	return PtrToArg<bool>::convert(&valid);
}

Variant Variant::iter_get(const Variant &r_iter, bool &r_valid) const {
	Variant result;
	GDNativeBool valid;
	internal::gdn_interface->variant_iter_get(ptr(), r_iter.ptr(), result.ptr(), &valid);
	r_valid = PtrToArg<bool>::convert(&valid);
	return result;
}

Variant::Type Variant::get_type() const {
	return static_cast<Variant::Type>(internal::gdn_interface->variant_get_type(ptr()));
}

bool Variant::has_method(const StringName &method) const {
	GDNativeBool has = internal::gdn_interface->variant_has_method(ptr(), method.ptr());
	return PtrToArg<bool>::convert(&has);
}

bool Variant::has_key(const Variant &key, bool *r_valid) const {
	GDNativeBool valid;
	GDNativeBool has = internal::gdn_interface->variant_has_key(ptr(), key.ptr(), &valid);
	if (r_valid) {
		*r_valid = PtrToArg<bool>::convert(&valid);
	}
	return PtrToArg<bool>::convert(&has);
}

bool Variant::has_member(Variant::Type type, const StringName &member) {
	GDNativeBool has = internal::gdn_interface->variant_has_member(static_cast<GDNativeVariantType>(type), member.ptr());
	return PtrToArg<bool>::convert(&has);
}

bool Variant::hash_compare(const Variant &variant) const {
	GDNativeBool compare = internal::gdn_interface->variant_hash_compare(ptr(), variant.ptr());
	return PtrToArg<bool>::convert(&compare);
}

bool Variant::booleanize() const {
	GDNativeBool booleanized = internal::gdn_interface->variant_booleanize(ptr());
	return PtrToArg<bool>::convert(&booleanized);
}

String Variant::stringify() const {
	String result;
	internal::gdn_interface->variant_stringify(ptr(), result.ptr());
	return result;
}

Variant Variant::duplicate(bool deep) const {
	Variant result;
	GDNativeBool _deep;
	PtrToArg<bool>::encode(deep, &_deep);
	internal::gdn_interface->variant_duplicate(ptr(), result.ptr(), _deep);
	return result;
}

void Variant::blend(const Variant &a, const Variant &b, float c, Variant &r_dst) {
	internal::gdn_interface->variant_blend(a.ptr(), b.ptr(), c, r_dst.ptr());
}

void Variant::interpolate(const Variant &a, const Variant &b, float c, Variant &r_dst) {
	internal::gdn_interface->variant_interpolate(a.ptr(), b.ptr(), c, r_dst.ptr());
}

String Variant::get_type_name(Variant::Type type) {
	String result;
	internal::gdn_interface->variant_get_type_name(static_cast<GDNativeVariantType>(type), result.ptr());
	return result;
}

bool Variant::can_convert(Variant::Type from, Variant::Type to) {
	GDNativeBool can;
	internal::gdn_interface->variant_can_convert(static_cast<GDNativeVariantType>(from), static_cast<GDNativeVariantType>(to));
	return PtrToArg<bool>::convert(&can);
}

bool Variant::can_convert_strict(Variant::Type from, Variant::Type to) {
	GDNativeBool can;
	internal::gdn_interface->variant_can_convert_strict(static_cast<GDNativeVariantType>(from), static_cast<GDNativeVariantType>(to));
	return PtrToArg<bool>::convert(&can);
}

void Variant::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, //PLANE,
		false, //QUATERNION,
		true, //AABB,
		true, //BASIS,
		true, //TRANSFORM,

		// 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,
	};

	if (unlikely(needs_deinit[get_type()])) { // Make it fast for types that don't need deinit.
		internal::gdn_interface->variant_destroy(ptr());
	}
	internal::gdn_interface->variant_new_nil(ptr());
}

} // namespace godot