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f7e03a10 JH |
1 | /* dquote_inline.h |
2 | * | |
3 | * Copyright (C) 2015 by Larry Wall and others | |
4 | * | |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | */ | |
8 | ||
6a5bc5ac KW |
9 | #ifndef PERL_DQUOTE_INLINE_H_ /* Guard against nested #inclusion */ |
10 | #define PERL_DQUOTE_INLINE_H_ | |
f7e03a10 JH |
11 | |
12 | /* | |
13 | - regcurly - a little FSA that accepts {\d+,?\d*} | |
14 | Pulled from reg.c. | |
15 | */ | |
16 | PERL_STATIC_INLINE I32 | |
17 | S_regcurly(const char *s) | |
18 | { | |
19 | PERL_ARGS_ASSERT_REGCURLY; | |
20 | ||
21 | if (*s++ != '{') | |
22 | return FALSE; | |
23 | if (!isDIGIT(*s)) | |
24 | return FALSE; | |
25 | while (isDIGIT(*s)) | |
26 | s++; | |
27 | if (*s == ',') { | |
28 | s++; | |
29 | while (isDIGIT(*s)) | |
30 | s++; | |
31 | } | |
32 | ||
33 | return *s == '}'; | |
34 | } | |
35 | ||
ce54a8b9 KW |
36 | /* This is inline not for speed, but because it is so tiny */ |
37 | ||
38 | PERL_STATIC_INLINE char* | |
39 | S_form_short_octal_warning(pTHX_ | |
40 | const char * const s, /* Points to first non-octal */ | |
41 | const STRLEN len /* Length of octals string, so | |
42 | (s-len) points to first | |
43 | octal */ | |
44 | ) | |
f7e03a10 | 45 | { |
ce54a8b9 KW |
46 | /* Return a character string consisting of a warning message for when a |
47 | * string constant in octal is weird, like "\078". */ | |
f7e03a10 | 48 | |
ce54a8b9 | 49 | const char * sans_leading_zeros = s - len; |
f7e03a10 | 50 | |
ce54a8b9 | 51 | PERL_ARGS_ASSERT_FORM_SHORT_OCTAL_WARNING; |
f7e03a10 | 52 | |
ce54a8b9 | 53 | assert(*s == '8' || *s == '9'); |
f7e03a10 | 54 | |
ce54a8b9 KW |
55 | /* Remove the leading zeros, retaining one zero so won't be zero length */ |
56 | while (*sans_leading_zeros == '0') sans_leading_zeros++; | |
57 | if (sans_leading_zeros == s) { | |
58 | sans_leading_zeros--; | |
f7e03a10 JH |
59 | } |
60 | ||
ce54a8b9 KW |
61 | return Perl_form(aTHX_ |
62 | "'%.*s' resolved to '\\o{%.*s}%c'", | |
63 | (int) (len + 2), s - len - 1, | |
64 | (int) (s - sans_leading_zeros), sans_leading_zeros, | |
65 | *s); | |
f7e03a10 | 66 | } |
6a5bc5ac | 67 | #endif /* PERL_DQUOTE_INLINE_H_ */ |