42 lines
861 B
C
42 lines
861 B
C
//---
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// vector: Simple vectors that only grow
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// Preprocessing is a bit ugly here, but it makes it really easy to use.
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//---
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#ifndef TEX_VECTOR
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#define TEX_VECTOR
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#include <stdint.h>
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#include <stddef.h>
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/* Declare three variables for every vector */
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#define vector_type(type, name) \
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type * name; \
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short name ## _len; \
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short name ## _size;
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/* Trivial initialization */
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#define vector_init(name) { \
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name = NULL; \
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name ## _len = 0; \
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name ## _size = 0; \
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}
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/* Extension */
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#define vector_extend(name) { \
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if(name ## _len >= name ## _size) \
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name = realloc(name, sizeof *name * \
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(name ## _size += 8)); \
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}
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/* Append */
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#define vector_append(name, value) { \
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vector_extend(name); \
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(name)[name ## _len++] = (value); \
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}
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/* Last elements */
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#define vector_last(name) ((name)[name ## _len - 1])
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#endif /* TEX_VECTOR */
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