static int jsstr_cmp_str(jsstr_t *jsstr, const WCHAR *str, unsigned len)
{
int ret;
switch(jsstr_tag(jsstr)) {
case JSSTR_INLINE:
ret = memcmp(jsstr_as_inline(jsstr)->buf, str, len*sizeof(WCHAR));
return ret || jsstr_length(jsstr) == len ? ret : 1;
case JSSTR_HEAP:
ret = memcmp(jsstr_as_heap(jsstr)->buf, str, len*sizeof(WCHAR));
return ret || jsstr_length(jsstr) == len ? ret : 1;
case JSSTR_ROPE: {
jsstr_rope_t *rope = jsstr_as_rope(jsstr);
unsigned left_len = jsstr_length(rope->left);
ret = jsstr_cmp_str(rope->left, str, min(len, left_len));
if(ret || len <= left_len)
return ret;
return jsstr_cmp_str(rope->right, str+left_len, len-left_len);
}
}
assert(0);
return 0;
}
void jsstr_extract(jsstr_t *str, unsigned off, unsigned len, WCHAR *buf)
{
switch(jsstr_tag(str)) {
case JSSTR_INLINE:
memcpy(buf, jsstr_as_inline(str)->buf+off, len*sizeof(WCHAR));
return;
case JSSTR_HEAP:
memcpy(buf, jsstr_as_heap(str)->buf+off, len*sizeof(WCHAR));
return;
case JSSTR_ROPE:
return jsstr_rope_extract(jsstr_as_rope(str), off, len, buf);
}
}
void jsstr_free(jsstr_t *str)
{
switch(jsstr_tag(str)) {
case JSSTR_HEAP:
heap_free(jsstr_as_heap(str)->buf);
break;
case JSSTR_ROPE: {
jsstr_rope_t *rope = jsstr_as_rope(str);
jsstr_release(rope->left);
jsstr_release(rope->right);
break;
}
case JSSTR_INLINE:
break;
}
heap_free(str);
}