mirror of
https://github.com/ZDoom/Raze.git
synced 2024-12-04 01:51:25 +00:00
271 lines
6.2 KiB
C++
271 lines
6.2 KiB
C++
// Compatibility declarations for things which might not be present in
|
|
// certain build environments. It also levels the playing field caused
|
|
// by different platforms.
|
|
|
|
#ifndef compat_h_
|
|
#define compat_h_
|
|
|
|
#pragma once
|
|
|
|
#include "xs_Float.h"
|
|
#include "m_alloc.h"
|
|
#include "intvec.h"
|
|
#include "m_swap.h"
|
|
#include "serializer.h"
|
|
|
|
////////// Compiler detection //////////
|
|
|
|
#ifdef __GNUC__
|
|
# define EDUKE32_GCC_PREREQ(major, minor) (major < __GNUC__ || (major == __GNUC__ && minor <= __GNUC_MINOR__))
|
|
#else
|
|
# define EDUKE32_GCC_PREREQ(major, minor) 0
|
|
#endif
|
|
|
|
|
|
////////// Language detection //////////
|
|
|
|
////////// Language and compiler feature polyfills //////////
|
|
|
|
# define EXTERNC
|
|
|
|
#ifndef UNREFERENCED_PARAMETER
|
|
# define UNREFERENCED_PARAMETER(x) (x) = (x)
|
|
#endif
|
|
|
|
#if defined __GNUC__ || defined __clang__
|
|
# define ATTRIBUTE(attrlist) __attribute__(attrlist)
|
|
#else
|
|
# define ATTRIBUTE(attrlist)
|
|
#endif
|
|
|
|
|
|
#ifndef MAY_ALIAS
|
|
# ifdef _MSC_VER
|
|
# define MAY_ALIAS
|
|
# else
|
|
# define MAY_ALIAS __attribute__((may_alias))
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef FORCE_INLINE
|
|
# ifdef _MSC_VER
|
|
# define FORCE_INLINE __forceinline
|
|
# else
|
|
# ifdef __GNUC__
|
|
# define FORCE_INLINE inline __attribute__((always_inline))
|
|
# else
|
|
# define FORCE_INLINE inline
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
# define fallthrough__ [[fallthrough]]
|
|
|
|
////////// Architecture detection //////////
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
# define B_BIG_ENDIAN 1
|
|
#else
|
|
# define B_BIG_ENDIAN 0
|
|
#endif
|
|
|
|
#include <inttypes.h>
|
|
#include <stdint.h>
|
|
|
|
#include <limits.h>
|
|
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#if !(defined _WIN32 && defined __clang__)
|
|
#include <float.h>
|
|
#endif
|
|
#include <math.h>
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
|
|
#include <assert.h>
|
|
|
|
# include <limits>
|
|
# include <algorithm>
|
|
# include <functional>
|
|
# include <type_traits>
|
|
|
|
////////// Platform headers //////////
|
|
|
|
#if !defined __APPLE__ && (!defined EDUKE32_BSD || !__STDC__)
|
|
# include <malloc.h>
|
|
#endif
|
|
|
|
#include "engineerrors.h"
|
|
|
|
////////// DEPRECATED: Standard library prefixing //////////
|
|
|
|
typedef intptr_t ssize_t;
|
|
|
|
typedef ssize_t bssize_t;
|
|
|
|
#define BMAX_PATH 256
|
|
|
|
////////// Metaprogramming structs //////////
|
|
|
|
using std::enable_if_t;
|
|
using native_t = intptr_t;
|
|
|
|
typedef struct MAY_ALIAS {
|
|
int32_t x, y;
|
|
} vec2_t;
|
|
|
|
typedef struct {
|
|
float x, y;
|
|
} vec2f_t;
|
|
|
|
typedef struct {
|
|
double x, y;
|
|
} vec2d_t;
|
|
|
|
typedef struct MAY_ALIAS {
|
|
union {
|
|
struct { int32_t x, y, z; };
|
|
vec2_t vec2;
|
|
};
|
|
} vec3_t;
|
|
|
|
typedef struct MAY_ALIAS {
|
|
union {
|
|
struct { int16_t x, y, z; };
|
|
vec2_16_t vec2;
|
|
};
|
|
} vec3_16_t;
|
|
|
|
typedef struct {
|
|
union {
|
|
struct {
|
|
union { float x, d; };
|
|
union { float y, u; };
|
|
union { float z, v; };
|
|
};
|
|
vec2f_t vec2;
|
|
};
|
|
} vec3f_t;
|
|
|
|
static_assert(sizeof(vec3f_t) == sizeof(float) * 3);
|
|
|
|
typedef struct {
|
|
union { double x; double d; };
|
|
union { double y; double u; };
|
|
union { double z; double v; };
|
|
} vec3d_t;
|
|
|
|
static_assert(sizeof(vec3d_t) == sizeof(double) * 3);
|
|
|
|
|
|
////////// Language tricks that depend on size_t //////////
|
|
|
|
#include "basics.h"
|
|
|
|
////////// Pointer management //////////
|
|
|
|
#define DO_FREE_AND_NULL(var) do { \
|
|
Xfree(var); (var) = NULL; \
|
|
} while (0)
|
|
|
|
|
|
////////// Data serialization //////////
|
|
|
|
inline int32_t B_LITTLE32(int32_t val) { return LittleLong(val); }
|
|
inline uint32_t B_LITTLE32(uint32_t val) { return LittleLong(val); }
|
|
inline int32_t B_LITTLE16(int16_t val) { return LittleShort(val); }
|
|
inline uint32_t B_LITTLE16(uint16_t val) { return LittleShort(val); }
|
|
|
|
static FORCE_INLINE void B_BUF32(void * const buf, uint32_t const x) { *(uint32_t *) buf = x; }
|
|
static FORCE_INLINE uint32_t B_UNBUF32(void const * const buf) { return *(uint32_t const *) buf; }
|
|
static FORCE_INLINE uint16_t B_UNBUF16(void const * const buf) { return *(uint16_t const *) buf; }
|
|
|
|
|
|
|
|
////////// Abstract data operations //////////
|
|
|
|
using std::min;
|
|
using std::max;
|
|
|
|
////////// Bitfield manipulation //////////
|
|
|
|
// This once was a static array, requiring a memory acces where a shift would suffice.
|
|
// Revert the above to a real bit shift through some C++ operator magic. That saves me from reverting all the code that uses this construct.
|
|
// Note: Only occurs 25 times in the code, should be removed for good.
|
|
static struct
|
|
{
|
|
constexpr uint8_t operator[](int index) const { return 1 << index; };
|
|
} pow2char;
|
|
|
|
|
|
static FORCE_INLINE void bitmap_set(uint8_t *const ptr, int const n) { ptr[n>>3] |= 1 << (n&7); }
|
|
static FORCE_INLINE char bitmap_test(uint8_t const *const ptr, int const n) { return ptr[n>>3] & (1 << (n&7)); }
|
|
|
|
////////// Utility functions //////////
|
|
|
|
// breadth-first search helpers
|
|
template <typename T>
|
|
void bfirst_search_init(T *const list, uint8_t *const bitmap, T *const eltnumptr, int const maxelts, int const firstelt)
|
|
{
|
|
memset(bitmap, 0, (maxelts+7)>>3);
|
|
|
|
list[0] = firstelt;
|
|
bitmap_set(bitmap, firstelt);
|
|
*eltnumptr = 1;
|
|
}
|
|
|
|
template <typename T>
|
|
void bfirst_search_try(T *const list, uint8_t *const bitmap, T *const eltnumptr, int const elt)
|
|
{
|
|
if (!bitmap_test(bitmap, elt))
|
|
{
|
|
bitmap_set(bitmap, elt);
|
|
list[(*eltnumptr)++] = elt;
|
|
}
|
|
}
|
|
|
|
////////// PANICKING ALLOCATION WRAPPERS //////////
|
|
|
|
|
|
#define Xstrdup(s) (strdup(s))
|
|
#define Xmalloc(size) (M_Malloc(size))
|
|
#define Xcalloc(nmemb, size) (M_Calloc(nmemb, size))
|
|
#define Xrealloc(ptr, size) (M_Realloc(ptr, size))
|
|
#define Xfree(ptr) (M_Free(ptr))
|
|
|
|
////////// Inlined external libraries //////////
|
|
|
|
/* End dependence on compat.o object. */
|
|
|
|
inline FSerializer& Serialize(FSerializer& arc, const char* key, vec2_t& c, vec2_t* def)
|
|
{
|
|
if (def && !memcmp(&c, def, sizeof(c))) return arc;
|
|
if (arc.BeginObject(key))
|
|
{
|
|
arc("x", c.x, def? &def->x : nullptr)
|
|
("y", c.y, def ? &def->y : nullptr)
|
|
.EndObject();
|
|
}
|
|
return arc;
|
|
}
|
|
|
|
inline FSerializer& Serialize(FSerializer& arc, const char* key, vec3_t& c, vec3_t* def)
|
|
{
|
|
if (def && !memcmp(&c, def, sizeof(c))) return arc;
|
|
if (arc.BeginObject(key))
|
|
{
|
|
arc("x", c.x, def ? &def->x : nullptr)
|
|
("y", c.y, def ? &def->y : nullptr)
|
|
("z", c.z, def ? &def->z : nullptr)
|
|
.EndObject();
|
|
}
|
|
return arc;
|
|
}
|
|
|
|
#endif // compat_h_
|