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add xvect

This commit is contained in:
Yuichi Nishiwaki 2014-03-20 20:06:59 +09:00
parent 1548a17b35
commit 0b4cb76834
1 changed files with 72 additions and 0 deletions
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72
src/codegen.c
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@ -15,6 +15,78 @@
# error enable PIC_NONE_IS_FALSE
#endif
typedef struct xvect {
char *data;
size_t size, capa, width;
} xvect;
static inline void xv_init(xvect *, size_t);
static inline void xv_destroy(xvect *);
static inline void xv_reserve(xvect *, size_t);
static inline void xv_get(xvect *, size_t, void *);
static inline void xv_set(xvect *, size_t, void *);
static inline void xv_push(xvect *, void *);
static inline void xv_peek(xvect *, void *);
static inline void xv_pop(xvect *, void *);
static inline void
xv_init(xvect *x, size_t width)
{
x->data = NULL;
x->size = 0;
x->capa = 0;
x->width = width;
}
static inline void
xv_destroy(xvect *x)
{
free(x->data);
}
static inline void
xv_reserve(xvect *x, size_t newcapa)
{
x->data = realloc(x->data, newcapa * x->width);
x->capa = newcapa;
}
static inline void
xv_get(xvect *x, size_t i, void *dst)
{
memcpy(dst, x->data + i * x->width, x->width);
}
static inline void
xv_set(xvect *x, size_t i, void *src)
{
memcpy(x->data + i * x->width, src, x->width);
}
static inline void
xv_push(xvect *x, void *src)
{
if (x->capa <= x->size + 1) {
xv_reserve(x, x->size * 2 + 1);
}
xv_set(x, x->size++, src);
}
static inline void
xv_peek(xvect *x, void *dst)
{
xv_get(x, x->size, dst);
}
static inline void
xv_pop(xvect *x, void *dst)
{
xv_get(x, --x->size, dst);
}
typedef struct analyze_scope {
/* rest args variable is counted by localc */
bool varg;