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godot/core/variant/method_ptrcall.h

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/**************************************************************************/
/* method_ptrcall.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. */
/**************************************************************************/
#pragma once
#include "core/object/object_id.h"
#include "core/templates/simple_type.h"
#include "core/typedefs.h"
#include "core/variant/variant.h"
namespace Internal {
template <typename T>
struct PtrToArgDirect {
_FORCE_INLINE_ static const T &convert(const void *p_ptr) {
return *reinterpret_cast<const T *>(p_ptr);
}
typedef T EncodeT;
_FORCE_INLINE_ static void encode(T p_val, void *p_ptr) {
*((T *)p_ptr) = p_val;
}
};
template <typename T, typename S>
struct PtrToArgConvert {
_FORCE_INLINE_ static T convert(const void *p_ptr) {
return static_cast<T>(*reinterpret_cast<const S *>(p_ptr));
}
typedef S EncodeT;
_FORCE_INLINE_ static void encode(T p_val, void *p_ptr) {
*((S *)p_ptr) = static_cast<S>(p_val);
}
};
template <typename T>
struct PtrToArgByReference {
_FORCE_INLINE_ static const T &convert(const void *p_ptr) {
return *reinterpret_cast<const T *>(p_ptr);
}
typedef T EncodeT;
_FORCE_INLINE_ static void encode(const T &p_val, void *p_ptr) {
*((T *)p_ptr) = p_val;
}
};
template <typename T, typename TAlt>
struct PtrToArgVectorConvert {
_FORCE_INLINE_ static Vector<TAlt> convert(const void *p_ptr) {
const Vector<T> *dvs = reinterpret_cast<const Vector<T> *>(p_ptr);
Vector<TAlt> ret;
int len = dvs->size();
ret.resize(len);
{
const T *r = dvs->ptr();
for (int i = 0; i < len; i++) {
ret.write[i] = r[i];
}
}
return ret;
}
// No EncodeT because direct pointer conversion not possible.
_FORCE_INLINE_ static void encode(const Vector<TAlt> &p_vec, void *p_ptr) {
Vector<T> *dv = reinterpret_cast<Vector<T> *>(p_ptr);
int len = p_vec.size();
dv->resize(len);
{
T *w = dv->ptrw();
for (int i = 0; i < len; i++) {
w[i] = p_vec[i];
}
}
}
};
template <typename T>
struct PtrToArgVectorFromArray {
_FORCE_INLINE_ static Vector<T> convert(const void *p_ptr) {
const Array *arr = reinterpret_cast<const Array *>(p_ptr);
Vector<T> ret;
int len = arr->size();
ret.resize(len);
for (int i = 0; i < len; i++) {
ret.write[i] = (*arr)[i];
}
return ret;
}
// No EncodeT because direct pointer conversion not possible.
_FORCE_INLINE_ static void encode(const Vector<T> &p_vec, void *p_ptr) {
Array *arr = reinterpret_cast<Array *>(p_ptr);
int len = p_vec.size();
arr->resize(len);
for (int i = 0; i < len; i++) {
(*arr)[i] = p_vec[i];
}
}
};
template <typename T>
struct PtrToArgStringConvertByReference {
_FORCE_INLINE_ static T convert(const void *p_ptr) {
T s = *reinterpret_cast<const String *>(p_ptr);
return s;
}
// No EncodeT because direct pointer conversion not possible.
_FORCE_INLINE_ static void encode(const T &p_vec, void *p_ptr) {
String *arr = reinterpret_cast<String *>(p_ptr);
*arr = String(p_vec);
}
};
} //namespace Internal
template <typename T, typename = void>
struct PtrToArg;
template <typename T>
struct PtrToArg<T, std::enable_if_t<!std::is_same_v<T, GetSimpleTypeT<T>>>> : PtrToArg<GetSimpleTypeT<T>> {};
template <>
struct PtrToArg<bool> : Internal::PtrToArgConvert<bool, uint8_t> {};
// Integer types.
template <>
struct PtrToArg<uint8_t> : Internal::PtrToArgConvert<uint8_t, int64_t> {};
template <>
struct PtrToArg<int8_t> : Internal::PtrToArgConvert<int8_t, int64_t> {};
template <>
struct PtrToArg<uint16_t> : Internal::PtrToArgConvert<uint16_t, int64_t> {};
template <>
struct PtrToArg<int16_t> : Internal::PtrToArgConvert<int16_t, int64_t> {};
template <>
struct PtrToArg<uint32_t> : Internal::PtrToArgConvert<uint32_t, int64_t> {};
template <>
struct PtrToArg<int32_t> : Internal::PtrToArgConvert<int32_t, int64_t> {};
template <>
struct PtrToArg<int64_t> : Internal::PtrToArgDirect<int64_t> {};
template <>
struct PtrToArg<uint64_t> : Internal::PtrToArgDirect<uint64_t> {};
// Float types
template <>
struct PtrToArg<float> : Internal::PtrToArgConvert<float, double> {};
template <>
struct PtrToArg<double> : Internal::PtrToArgDirect<double> {};
template <>
struct PtrToArg<String> : Internal::PtrToArgDirect<String> {};
template <>
struct PtrToArg<Vector2> : Internal::PtrToArgDirect<Vector2> {};
template <>
struct PtrToArg<Vector2i> : Internal::PtrToArgDirect<Vector2i> {};
template <>
struct PtrToArg<Rect2> : Internal::PtrToArgDirect<Rect2> {};
template <>
struct PtrToArg<Rect2i> : Internal::PtrToArgDirect<Rect2i> {};
template <>
struct PtrToArg<Vector3> : Internal::PtrToArgByReference<Vector3> {};
template <>
struct PtrToArg<Vector3i> : Internal::PtrToArgByReference<Vector3i> {};
template <>
struct PtrToArg<Vector4> : Internal::PtrToArgByReference<Vector4> {};
template <>
struct PtrToArg<Vector4i> : Internal::PtrToArgByReference<Vector4i> {};
template <>
struct PtrToArg<Transform2D> : Internal::PtrToArgDirect<Transform2D> {};
template <>
struct PtrToArg<Projection> : Internal::PtrToArgDirect<Projection> {};
template <>
struct PtrToArg<Plane> : Internal::PtrToArgByReference<Plane> {};
template <>
struct PtrToArg<Quaternion> : Internal::PtrToArgDirect<Quaternion> {};
template <>
struct PtrToArg<AABB> : Internal::PtrToArgByReference<AABB> {};
template <>
struct PtrToArg<Basis> : Internal::PtrToArgByReference<Basis> {};
template <>
struct PtrToArg<Transform3D> : Internal::PtrToArgByReference<Transform3D> {};
template <>
struct PtrToArg<Color> : Internal::PtrToArgByReference<Color> {};
template <>
struct PtrToArg<StringName> : Internal::PtrToArgDirect<StringName> {};
template <>
struct PtrToArg<NodePath> : Internal::PtrToArgDirect<NodePath> {};
template <>
struct PtrToArg<RID> : Internal::PtrToArgDirect<RID> {};
// Object doesn't need this.
template <>
struct PtrToArg<Callable> : Internal::PtrToArgDirect<Callable> {};
template <>
struct PtrToArg<Signal> : Internal::PtrToArgDirect<Signal> {};
template <>
struct PtrToArg<Dictionary> : Internal::PtrToArgDirect<Dictionary> {};
template <>
struct PtrToArg<Array> : Internal::PtrToArgDirect<Array> {};
template <>
struct PtrToArg<PackedByteArray> : Internal::PtrToArgDirect<PackedByteArray> {};
template <>
struct PtrToArg<PackedInt32Array> : Internal::PtrToArgDirect<PackedInt32Array> {};
template <>
struct PtrToArg<PackedInt64Array> : Internal::PtrToArgDirect<PackedInt64Array> {};
template <>
struct PtrToArg<PackedFloat32Array> : Internal::PtrToArgDirect<PackedFloat32Array> {};
template <>
struct PtrToArg<PackedFloat64Array> : Internal::PtrToArgDirect<PackedFloat64Array> {};
template <>
struct PtrToArg<PackedStringArray> : Internal::PtrToArgDirect<PackedStringArray> {};
template <>
struct PtrToArg<PackedVector2Array> : Internal::PtrToArgDirect<PackedVector2Array> {};
template <>
struct PtrToArg<PackedVector3Array> : Internal::PtrToArgDirect<PackedVector3Array> {};
template <>
struct PtrToArg<PackedColorArray> : Internal::PtrToArgDirect<PackedColorArray> {};
template <>
struct PtrToArg<PackedVector4Array> : Internal::PtrToArgDirect<PackedVector4Array> {};
template <>
struct PtrToArg<Variant> : Internal::PtrToArgByReference<Variant> {};
template <typename T>
struct PtrToArg<T, std::enable_if_t<std::is_enum_v<T>>> : Internal::PtrToArgConvert<T, int64_t> {};
template <typename T>
struct PtrToArg<BitField<T>, std::enable_if_t<std::is_enum_v<T>>> : Internal::PtrToArgConvert<BitField<T>, int64_t> {};
// This is for Object.
template <typename T>
struct PtrToArg<T *> {
_FORCE_INLINE_ static T *convert(const void *p_ptr) {
return likely(p_ptr) ? *reinterpret_cast<T *const *>(p_ptr) : nullptr;
}
typedef Object *EncodeT;
_FORCE_INLINE_ static void encode(T *p_var, void *p_ptr) {
*((T **)p_ptr) = p_var;
}
};
template <typename T>
struct PtrToArg<const T *> {
_FORCE_INLINE_ static const T *convert(const void *p_ptr) {
return likely(p_ptr) ? *reinterpret_cast<T *const *>(p_ptr) : nullptr;
}
typedef const Object *EncodeT;
_FORCE_INLINE_ static void encode(T *p_var, void *p_ptr) {
*((T **)p_ptr) = p_var;
}
};
// This is for ObjectID.
template <>
struct PtrToArg<ObjectID> {
_FORCE_INLINE_ static const ObjectID convert(const void *p_ptr) {
return ObjectID(*reinterpret_cast<const uint64_t *>(p_ptr));
}
typedef uint64_t EncodeT;
_FORCE_INLINE_ static void encode(const ObjectID &p_val, void *p_ptr) {
*((uint64_t *)p_ptr) = p_val;
}
};
// This is for the special cases used by Variant.
template <>
struct PtrToArg<Vector<StringName>> : Internal::PtrToArgVectorConvert<String, StringName> {};
// For stuff that gets converted to Array vectors.
template <>
struct PtrToArg<Vector<Variant>> : Internal::PtrToArgVectorFromArray<Variant> {};
template <>
struct PtrToArg<Vector<RID>> : Internal::PtrToArgVectorFromArray<RID> {};
template <>
struct PtrToArg<Vector<Plane>> : Internal::PtrToArgVectorFromArray<Plane> {};
// Special case for IPAddress.
template <>
struct PtrToArg<IPAddress> : Internal::PtrToArgStringConvertByReference<IPAddress> {};
template <>
struct PtrToArg<Vector<Face3>> {
_FORCE_INLINE_ static Vector<Face3> convert(const void *p_ptr) {
const Vector<Vector3> *dvs = reinterpret_cast<const Vector<Vector3> *>(p_ptr);
Vector<Face3> ret;
int len = dvs->size() / 3;
ret.resize(len);
{
const Vector3 *r = dvs->ptr();
Face3 *w = ret.ptrw();
for (int i = 0; i < len; i++) {
w[i].vertex[0] = r[i * 3 + 0];
w[i].vertex[1] = r[i * 3 + 1];
w[i].vertex[2] = r[i * 3 + 2];
}
}
return ret;
}
// No EncodeT because direct pointer conversion not possible.
_FORCE_INLINE_ static void encode(const Vector<Face3> &p_vec, void *p_ptr) {
Vector<Vector3> *arr = reinterpret_cast<Vector<Vector3> *>(p_ptr);
int len = p_vec.size();
arr->resize(len * 3);
{
const Face3 *r = p_vec.ptr();
Vector3 *w = arr->ptrw();
for (int i = 0; i < len; i++) {
w[i * 3 + 0] = r[i].vertex[0];
w[i * 3 + 1] = r[i].vertex[1];
w[i * 3 + 2] = r[i].vertex[2];
}
}
}
};
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