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54 lines
1.3 KiB
54 lines
1.3 KiB
//! Generic pointer slice
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#ifndef _SLICE_H
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#define _SLICE_H
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#include <limits.h>
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#include "ints.h"
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#include "macros.h"
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typedef struct _slice {
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union {
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void* ptr;
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u8* bytes;
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};
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usize len;
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} slice_t;
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#define SLICE_MAX ((struct _slice){ .ptr = AS(UINTPTR_MAX, void*), .len = SIZE_MAX })
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#define SLICE(origin, length) ((struct _slice){ .ptr = ((void*)(origin)), .len = ((usize)(length)) })
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_mixin usize slice_end(const slice_t*pIN slice)
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{
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return AS(slice->bytes + slice->len, usize);
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}
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_mixin usize slice_start(const slice_t*pIN slice)
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{
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return AS(slice->bytes, usize);
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}
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_mixin struct { usize start, end; } slice_sted(const slice_t*pIN slice)
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{
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return (var(slice_sted(NULL))){
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.start = slice_start(slice),
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.end = slice_end(slice),
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};
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}
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// Format string for slices
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#define SLICE_FORMAT "%lu..%lu"
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// Expects a pointer to a `slice_t`
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#define SLICE_FORMAT_ARGS(slice) slice_start(slice), slice_end(slice)
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#define SLICE_STR_MAX_SIZE 42lu
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usize slice_strn(const slice_t*pIN slice, usize len, char str[static pOUT len]);
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usize slice_str_sz(const slice_t*pIN slice);
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// Pointer returned from this function is TLS static and will change on each call.
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const char* slice_strs(const slice_t*pIN slice);
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// Pointer returned from this function must be free'd
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char* slice_str(const slice_t*pIN slice);
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#endif /* _SLICE_H */
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