52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
// common.h
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#ifndef _ZIG0_COMMON_H__
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#define _ZIG0_COMMON_H__
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#include <stdint.h>
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#include <stdlib.h>
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#define SLICE(Type) \
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struct Type##Slice { \
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uint32_t len; \
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uint32_t cap; \
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Type* arr; \
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}
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#define ARR_INIT(Type, initial_cap) ({ \
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Type* arr = calloc(initial_cap, sizeof(Type)); \
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if (!arr) \
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exit(1); \
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arr; \
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})
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#define SLICE_INIT(Type, initial_cap) \
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{ \
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.len = 0, \
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.cap = (initial_cap), \
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.arr = ARR_INIT(Type, initial_cap) \
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}
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#define SLICE_RESIZE(Type, slice, new_cap) ({ \
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uint32_t cap = (new_cap); \
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Type* new_arr = realloc((slice)->arr, cap * sizeof(Type)); \
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if (!new_arr) \
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exit(1); \
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(slice)->arr = new_arr; \
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(slice)->cap = cap; \
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})
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#define SLICE_ENSURE_CAPACITY(Type, slice, additional) ({ \
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if ((slice)->len + (additional) > (slice)->cap) { \
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SLICE_RESIZE(Type, \
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slice, \
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((slice)->cap * 2 > (slice)->len + (additional)) ? (slice)->cap * 2 : (slice)->len + (additional)); \
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} \
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})
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#define SLICE_APPEND(Type, slice, item) ({ \
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SLICE_ENSURE_CAPACITY(Type, slice, 1); \
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(slice)->arr[(slice)->len++] = (item); \
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})
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#endif
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