88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
#ifndef GUF_COMMON_H
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#define GUF_COMMON_H
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#include <stdlib.h>
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#include <stdbool.h>
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#include <limits.h>
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#include <inttypes.h>
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#include <stddef.h>
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#define GUF_PLATFORM_LITTLE_ENDIAN
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// #define GUF_PLATFORM_BIG_ENDIAN
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#if SIZE_MAX == UINT64_MAX
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#define GUF_PLATFORM_BITS 64
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#elif SIZE_MAX == UINT32_MAX
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#define GUF_PLATFORM_BITS 32
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#elif SIZE_MAX == UINT16_MAX
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#define GUF_PLATFORM_BITS 16
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#elif SIZE_MAX == UINT8_MAX
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#define GUF_PLATFORM_BITS 8
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#else
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#define GUF_PLATFORM_BITS 64
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#error "libguf: Could not detect GUF_PLATFORM_BITS"
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#endif
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#if GUF_PLATFORM_BITS <= 32
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#define GUF_HASH_32_BIT
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#endif
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#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L)
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#define GUF_STDC_AT_LEAST_C11
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#endif
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#if (defined(__cplusplus) && __cplusplus >= 201103L)
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#define GUF_STDCPP_AT_LEAST_CPP11
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#endif
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/*
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// Copy- and move constructors:
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GUF_T_COPY: GUF_T *(*copy)(GUF_T *dst, const GUF_T *src, void *ctx);
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GUF_T_MOVE: GUF_T *(*move)(GUF_T *dst, GUF_T *src, void *ctx); // "Steals" the resources of src (named after move constructors in C++)
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// Destructor:
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GUF_T_FREE: void (*free)(GUF_T *obj, void *ctx);
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// Comparison- and hash operators:
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GUF_T_CMP: int (*cmp)(const GUF_T *a, const GUF_T *b); // a < b -> -1; a == b -> 0; a > b -> 1
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GUF_T_EQ: bool (*eq)(const GUF_T *a, const GUF_T *b);
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GUF_T_HASH: guf_hash_size_t (*hash)(const GUF_T *obj);
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*/
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typedef enum guf_cpy_opt {
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GUF_CPY_VALUE = 0,
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GUF_CPY_DEEP = 1,
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GUF_CPY_MOVE = 2,
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} guf_cpy_opt;
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#define GUF_SWAP(TYPE, val_a, val_b) do {TYPE guf_swap_tmp = val_a; val_a = val_b; val_b = guf_swap_tmp;} while (0);
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#define GUF_ARR_SIZE(ARR) (sizeof((ARR)) / (sizeof((ARR)[0])))
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#define GUF_MIN(X, Y) ((X) < (Y) ? (X) : (Y))
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#define GUF_MAX(X, Y) ((X) > (Y) ? (X) : (Y))
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#define GUF_CLAMP(X, MIN, MAX) (GUF_MAX(GUF_MIN((X), (MAX)), (MIN)))
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// The GUF_CAT/GUF_TOK_CAT indirection is necessary because the ## operation alone does not evaluate the macro arguments.
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#define GUF_TOK_CAT(a, b) a##b
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#define GUF_CAT(a, b) GUF_TOK_CAT(a, b)
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// See comment above.
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#define GUF_TOK_STRINGIFY(x) #x
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#define GUF_STRINGIFY(x) GUF_TOK_STRINGIFY(x)
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#define GUF_CNT_NPOS PTRDIFF_MIN
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#define GUF_CNT_FOREACH(CNT_PTR, CNT_TYPE, IT_NAME) for (GUF_CAT(CNT_TYPE, _iter) IT_NAME = GUF_CAT(CNT_TYPE, _begin)(CNT_PTR); IT_NAME.ptr != GUF_CAT(CNT_TYPE, _end)(CNT_PTR).ptr; IT_NAME = GUF_CAT(CNT_TYPE, _iter_next)(CNT_PTR, IT_NAME, 1))
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#define GUF_CNT_FOREACH_STEP(CNT_PTR, CNT_TYPE, IT_NAME, STEP) for (GUF_CAT(CNT_TYPE, _iter) IT_NAME = GUF_CAT(CNT_TYPE, _begin)(CNT_PTR); IT_NAME.ptr != GUF_CAT(CNT_TYPE, _end)(CNT_PTR).ptr; IT_NAME = GUF_CAT(CNT_TYPE, _iter_next)(CNT_PTR, IT_NAME, STEP))
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#define GUF_CNT_FOREACH_REVERSE(CNT_PTR, CNT_TYPE, IT_NAME) for (GUF_CAT(CNT_TYPE, _iter) IT_NAME = GUF_CAT(CNT_TYPE, _rbegin)(CNT_PTR); IT_NAME.ptr != GUF_CAT(CNT_TYPE, _rend)(CNT_PTR).ptr; IT_NAME = GUF_CAT(CNT_TYPE, _iter_next)(CNT_PTR, IT_NAME, 1))
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#define GUF_CNT_FOREACH_REVERSE_STEP(CNT_PTR, CNT_TYPE, IT_NAME, STEP) for (GUF_CAT(CNT_TYPE, _iter) IT_NAME = GUF_CAT(CNT_TYPE, _rbegin)(CNT_PTR); IT_NAME.ptr != GUF_CAT(CNT_TYPE, _rend)(CNT_PTR).ptr; IT_NAME = GUF_CAT(CNT_TYPE, _iter_next)(CNT_PTR, IT_NAME, STEP))
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#define GUF_CNT_LIFETIME_BLOCK(GUF_CNT_TYPE, CNT_VARNAME, CODE) do { \
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GUF_CNT_TYPE CNT_VARNAME; \
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CODE; \
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GUF_CAT(GUF_CNT_TYPE, _free)(&CNT_VARNAME, NULL); \
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} while (0);
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#endif
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