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| author | Carl Worth <cworth@cworth.org> | 2010-06-02 12:54:15 -0700 |
|---|---|---|
| committer | Carl Worth <cworth@cworth.org> | 2010-06-02 12:54:15 -0700 |
| commit | 111e25bd84fb923bbab5b0ca76bbbb5d9a537a26 (patch) | |
| tree | 1ae96196971bd7ddadeb065f3a0555ff7c5e0381 | |
| parent | e4b2731a25c071407d90c6c593a226574e9c36f9 (diff) | |
Factor out common sub-expression from multi-line-comment regular expression.
In two places we look for an (optional) sequence of characters other
than "*" followed by a sequence of on or more "*". Using a name for
this (NON_STARS_THEN_STARS) seems to make it a bit easier to
understand.
| -rw-r--r-- | glcpp-lex.l | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/glcpp-lex.l b/glcpp-lex.l index 2aec46a..0d9a754 100644 --- a/glcpp-lex.l +++ b/glcpp-lex.l @@ -45,6 +45,8 @@ DECIMAL_INTEGER [1-9][0-9]*[uU]? OCTAL_INTEGER 0[0-7]*[uU]? HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? +NON_STARS_THEN_STARS [^*]*[*]+ + %% /* Single-line comments */ @@ -53,7 +55,7 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]? } /* Multi-line comments */ -"/*"([^*]*[*]+[^*/])*[^*]*[*]+"/" { +"/*"({NON_STARS_THEN_STARS}[^*/])*{NON_STARS_THEN_STARS}"/" { if (yyextra->space_tokens) return SPACE; } |