hyung-hwan/hawk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

enhanced the tokenizer to recognize the octal notation as much as possible in a regular expression
All checks were successful
continuous-integration/drone/push Build is passing
Details

Browse Source
This commit is contained in:
hyung-hwan
2025-10-04 02:36:41 +09:00
parent 2bc122f23a
commit 1692e9ac2b
3 changed files with 23 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
lib/parse.c
View File

@ -6559,7 +6559,17 @@ static int get_string (
}
else
{
ADD_TOKEN_UINT32(hawk, tok, c_acc);
if (digit_count == 1 && end_char == HAWK_T('/'))
{
/* inside a regular expression, it's likely a backreference */
hawk_ooch_t oc = c_acc + HAWK_T('0');
ADD_TOKEN_CHAR(hawk, tok, esc_char);
ADD_TOKEN_CHAR(hawk, tok, oc);
}
else
{
ADD_TOKEN_UINT32(hawk, tok, c_acc);
}
escaped = 0;
}
}
@ -6600,7 +6610,6 @@ static int get_string (
}
else
{
if (digit_count == 0)
{
hawk_ooch_t ec;
@ -6619,7 +6628,7 @@ static int get_string (
else ADD_TOKEN_UINT32(hawk, tok, c_acc);
escaped = 0;
/* carray on to handle the current character */
/* carry on to handle the current character */
}
}
else if (escaped == 99)
@ -6671,10 +6680,11 @@ static int get_string (
else if (c == HAWK_T('b')) c = HAWK_T('\b');
else if (c == HAWK_T('v')) c = HAWK_T('\v');
else if (c == HAWK_T('a')) c = HAWK_T('\a');
else if (c >= HAWK_T('0') && c <= HAWK_T('7') && end_char != HAWK_T('/'))
else if (c >= HAWK_T('0') && c <= HAWK_T('7'))
{
/* i don't support the octal notation for a regular expression.
* it conflicts with the backreference notation between \1 and \7 inclusive. */
/* treat it as an octal notation first and
* check if it's a backreference between \1 and \7 inclusive
* in the `if (escaped == 3)` block. */
escaped = 3;
digit_count = 1;
c_acc = c - HAWK_T('0');