Change regexp flags field from uint8 to uint16 (#185)
I need the extra bits to store the 'v' flag as described in https://github.com/tc39/proposal-regexp-v-flag
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2 changed files with 15 additions and 12 deletions
25
libregexp.c
25
libregexp.c
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@ -101,11 +101,11 @@ static const REOpCode reopcode_info[REOP_COUNT] = {
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};
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#define RE_HEADER_FLAGS 0
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#define RE_HEADER_CAPTURE_COUNT 1
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#define RE_HEADER_STACK_SIZE 2
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#define RE_HEADER_BYTECODE_LEN 3
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#define RE_HEADER_CAPTURE_COUNT 2
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#define RE_HEADER_STACK_SIZE 3
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#define RE_HEADER_BYTECODE_LEN 4
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#define RE_HEADER_LEN 7
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#define RE_HEADER_LEN 8
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static inline int is_digit(int c) {
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return c >= '0' && c <= '9';
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@ -280,16 +280,16 @@ static __maybe_unused void lre_dump_bytecode(const uint8_t *buf,
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assert(buf_len >= RE_HEADER_LEN);
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re_flags= buf[0];
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re_flags = lre_get_flags(buf);
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bc_len = get_u32(buf + RE_HEADER_BYTECODE_LEN);
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assert(bc_len + RE_HEADER_LEN <= buf_len);
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printf("flags: 0x%x capture_count=%d stack_size=%d\n",
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re_flags, buf[1], buf[2]);
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re_flags, buf[RE_HEADER_CAPTURE_COUNT], buf[RE_HEADER_STACK_SIZE]);
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if (re_flags & LRE_FLAG_NAMED_GROUPS) {
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const char *p;
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p = (char *)buf + RE_HEADER_LEN + bc_len;
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printf("named groups: ");
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for(i = 1; i < buf[1]; i++) {
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for(i = 1; i < buf[RE_HEADER_CAPTURE_COUNT]; i++) {
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if (i != 1)
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printf(",");
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printf("<%s>", p);
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@ -1850,7 +1850,7 @@ uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size,
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dbuf_init2(&s->byte_code, opaque, lre_realloc);
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dbuf_init2(&s->group_names, opaque, lre_realloc);
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dbuf_putc(&s->byte_code, re_flags); /* first element is the flags */
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dbuf_put_u16(&s->byte_code, re_flags); /* first element is the flags */
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dbuf_putc(&s->byte_code, 0); /* second element is the number of captures */
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dbuf_putc(&s->byte_code, 0); /* stack size */
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dbuf_put_u32(&s->byte_code, 0); /* bytecode length */
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@ -1903,7 +1903,8 @@ uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size,
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/* add the named groups if needed */
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if (s->group_names.size > (s->capture_count - 1)) {
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dbuf_put(&s->byte_code, s->group_names.buf, s->group_names.size);
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s->byte_code.buf[RE_HEADER_FLAGS] |= LRE_FLAG_NAMED_GROUPS;
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put_u16(s->byte_code.buf + RE_HEADER_FLAGS,
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LRE_FLAG_NAMED_GROUPS | lre_get_flags(s->byte_code.buf));
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}
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dbuf_free(&s->group_names);
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@ -2509,7 +2510,7 @@ int lre_exec(uint8_t **capture,
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int re_flags, i, alloca_size, ret;
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StackInt *stack_buf;
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re_flags = bc_buf[RE_HEADER_FLAGS];
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re_flags = lre_get_flags(bc_buf);
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s->multi_line = (re_flags & LRE_FLAG_MULTILINE) != 0;
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s->ignore_case = (re_flags & LRE_FLAG_IGNORECASE) != 0;
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s->is_unicode = (re_flags & LRE_FLAG_UNICODE) != 0;
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@ -2546,7 +2547,7 @@ int lre_get_capture_count(const uint8_t *bc_buf)
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int lre_get_flags(const uint8_t *bc_buf)
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{
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return bc_buf[RE_HEADER_FLAGS];
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return get_u16(bc_buf + RE_HEADER_FLAGS);
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}
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/* Return NULL if no group names. Otherwise, return a pointer to
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@ -2575,6 +2576,8 @@ void lre_byte_swap(uint8_t *buf, size_t len, BOOL is_byte_swapped)
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// <capture group name 1>
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// <capture group name 2>
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// etc.
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inplace_bswap16(&p[RE_HEADER_FLAGS]);
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n = get_u32(&p[RE_HEADER_BYTECODE_LEN]);
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inplace_bswap32(&p[RE_HEADER_BYTECODE_LEN]);
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if (is_byte_swapped)
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@ -31851,7 +31851,7 @@ typedef enum BCTagEnum {
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BC_TAG_OBJECT_REFERENCE,
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} BCTagEnum;
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#define BC_VERSION 3
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#define BC_VERSION 4
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typedef struct BCWriterState {
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JSContext *ctx;
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