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regexp: removed alloca() is lre_exec() - added specific opcodes for \s and \S to have a smaller bytecode - optimized \b and \B

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Fabrice Bellard
2025-12-22 15:12:46 +01:00
parent 7bd1ae2c76
commit f1139494d1
5 changed files with 94 additions and 69 deletions
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19
quickjs.c
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@@ -45487,7 +45487,6 @@ static JSValue js_string_split(JSContext *ctx, JSValueConst this_val,
goto add_tail;
goto done;
}
q = p;
for (q = p; (q += !r) <= s - r - !r; q = p = e + r) {
e = string_indexof(sp, rp, q);
if (e < 0)
@@ -47423,7 +47422,7 @@ static JSValue js_regexp_exec(JSContext *ctx, JSValueConst this_val,
JSValue indices, indices_groups;
uint8_t *re_bytecode;
uint8_t **capture, *str_buf;
int rc, capture_count, shift, i, re_flags;
int rc, capture_count, shift, i, re_flags, alloc_count;
int64_t last_index;
const char *group_name_ptr;
JSObject *p_obj;
@@ -47453,12 +47452,13 @@ static JSValue js_regexp_exec(JSContext *ctx, JSValueConst this_val,
last_index = 0;
}
str = JS_VALUE_GET_STRING(str_val);
capture_count = lre_get_capture_count(re_bytecode);
if (capture_count > 0) {
capture = js_malloc(ctx, sizeof(capture[0]) * capture_count * 2);
alloc_count = lre_get_alloc_count(re_bytecode);
if (alloc_count > 0) {
capture = js_malloc(ctx, sizeof(capture[0]) * alloc_count);
if (!capture)
goto fail;
}
capture_count = lre_get_capture_count(re_bytecode);
shift = str->is_wide_char;
str_buf = str->u.str8;
if (last_index > str->len) {
@@ -47642,7 +47642,7 @@ static JSValue js_regexp_replace(JSContext *ctx, JSValueConst this_val, JSValueC
uint8_t *re_bytecode;
int ret;
uint8_t **capture, *str_buf;
int capture_count, shift, re_flags;
int capture_count, alloc_count, shift, re_flags;
int next_src_pos, start, end;
int64_t last_index;
StringBuffer b_s, *b = &b_s;
@@ -47676,12 +47676,13 @@ static JSValue js_regexp_replace(JSContext *ctx, JSValueConst this_val, JSValueC
if (js_regexp_get_lastIndex(ctx, &last_index, this_val))
goto fail;
}
capture_count = lre_get_capture_count(re_bytecode);
if (capture_count > 0) {
capture = js_malloc(ctx, sizeof(capture[0]) * capture_count * 2);
alloc_count = lre_get_alloc_count(re_bytecode);
if (alloc_count > 0) {
capture = js_malloc(ctx, sizeof(capture[0]) * alloc_count);
if (!capture)
goto fail;
}
capture_count = lre_get_capture_count(re_bytecode);
fullUnicode = ((re_flags & (LRE_FLAG_UNICODE | LRE_FLAG_UNICODE_SETS)) != 0);
shift = str->is_wide_char;
str_buf = str->u.str8;