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Code Issues Releases Activity

stretchy_buffer: Add sb_reserve feature

pull/394/head
Ivan Ivanov 2017-01-03 07:54:49 +13:00
parent 3e7f2d6ebd
commit b84dda0015
1 changed files with 8 additions and 5 deletions
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13
stretchy_buffer.h
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@ -65,6 +65,7 @@
// sb_count(TYPE *a) the number of elements in the array
// sb_push(TYPE *a, TYPE v) adds v on the end of the array, a la push_back
// sb_add(TYPE *a, int n) adds n uninitialized elements at end of array & returns pointer to first added
// sb_reserve(TYPE *a, int n) reserves space for n elements, a la vector::reserve
// sb_last(TYPE *a) returns an lvalue of the last item in the array
// a[n] access the nth (counting from 0) element of the array
//
@ -172,17 +173,19 @@
#define STB_STRETCHY_BUFFER_H_INCLUDED
#ifndef NO_STRETCHY_BUFFER_SHORT_NAMES
#define sb_free stb_sb_free
#define sb_push stb_sb_push
#define sb_count stb_sb_count
#define sb_add stb_sb_add
#define sb_last stb_sb_last
#define sb_free stb_sb_free
#define sb_push stb_sb_push
#define sb_count stb_sb_count
#define sb_add stb_sb_add
#define sb_reserve stb_sb_reserve
#define sb_last stb_sb_last
#endif
#define stb_sb_free(a) ((a) ? free(stb__sbraw(a)),0 : 0)
#define stb_sb_push(a,v) (stb__sbmaybegrow(a,1), (a)[stb__sbn(a)++] = (v))
#define stb_sb_count(a) ((a) ? stb__sbn(a) : 0)
#define stb_sb_add(a,n) (stb__sbmaybegrow(a,n), stb__sbn(a)+=(n), &(a)[stb__sbn(a)-(n)])
#define stb_sb_reserve(a,n) (stb__sbmaybegrow(a,n), &(a)[stb__sbn(a)])
#define stb_sb_last(a) ((a)[stb__sbn(a)-1])
#define stb__sbraw(a) ((int *) (a) - 2)