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| author | Karl Williamson <public@khwilliamson.com> | 2013-07-04 18:57:55 -0600 |
|---|---|---|
| committer | Karl Williamson <public@khwilliamson.com> | 2013-07-04 19:06:35 -0600 |
| commit | 247f9b19318882fd9a52fe49aa31fc8d3d3db4f7 (patch) | |
| tree | e08f9be590b087022f9417a0be29cd2adf2e3f76 /inline_invlist.c | |
| parent | 49cf1d6641a6dfd301302f616e4f25595dcc65d4 (diff) | |
| download | perl-247f9b19318882fd9a52fe49aa31fc8d3d3db4f7.tar.gz | |
Revert "regcomp.c: Move some #defines to only file that uses them"
This reverts commit 05944450e0fc82eb8fc1fb5a4bf63f23785262a0.
Blead won't compile with address sanitizer; commit
7cb47964955167736b2923b008cc8023a9b035e8 reverting an earlier commit
failed to fix that. I'm trying two more reversions to get it back
working. This is one of those
Diffstat (limited to 'inline_invlist.c')
| -rw-r--r-- | inline_invlist.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/inline_invlist.c b/inline_invlist.c index ced42d85c0..c6bc47ef38 100644 --- a/inline_invlist.c +++ b/inline_invlist.c @@ -8,6 +8,30 @@ #if defined(PERL_IN_UTF8_C) || defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C) +#define INVLIST_LEN_OFFSET 0 /* Number of elements in the inversion list */ + +/* This is a combination of a version and data structure type, so that one + * being passed in can be validated to be an inversion list of the correct + * vintage. When the structure of the header is changed, a new random number + * in the range 2**31-1 should be generated. Then, if an auxiliary program + * doesn't change correspondingly, it will be discovered immediately */ +#define INVLIST_VERSION_ID_OFFSET 1 +#define INVLIST_VERSION_ID 1826693541 + +#define INVLIST_OFFSET_OFFSET 2 /* 0 or 1 */ +/* The UV at this position contains either 0 or 1. If 0, the inversion list + * contains the code point U+00000, and begins at element [0] in the array, + * which always contains 0. If 1, the inversion list doesn't contain U+0000, + * and it begins at element [1]. Inverting an inversion list consists of + * adding or removing the 0 at the beginning of it. By reserving a space for + * that 0, inversion can be made very fast: we just flip this UV */ + +/* For safety, when adding new elements, remember to #undef them at the end of + * the inversion list code section */ + +#define HEADER_LENGTH (INVLIST_OFFSET_OFFSET + 1) /* includes 1 for the constant + 0 element */ + /* An element is in an inversion list iff its index is even numbered: 0, 2, 4, * etc */ #define ELEMENT_RANGE_MATCHES_INVLIST(i) (! ((i) & 1)) |