diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Support/Regex.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/llvm/Support/Regex.h b/include/llvm/Support/Regex.h index ffe09b19b6..82df2c67bd 100644 --- a/include/llvm/Support/Regex.h +++ b/include/llvm/Support/Regex.h @@ -7,7 +7,10 @@ // //===----------------------------------------------------------------------===// // -// This file implements a POSIX regular expression matcher. +// This file implements a POSIX regular expression matcher. Both Basic and +// Extended POSIX regular expressions (ERE) are supported. EREs were extended +// to support backreferences in matches. +// This implementation also supports matching strings with embedded NUL chars. // //===----------------------------------------------------------------------===// @@ -33,12 +36,14 @@ namespace llvm { /// null string after any newline in the string in addition to its normal /// function, and the $ anchor matches the null string before any /// newline in the string in addition to its normal function. - Newline=2 + Newline=2, + /// By default, the POSIX extended regular expression (ERE) syntax is + /// assumed. Pass this flag to turn on basic regular expressions (BRE) + /// instead. + BasicRegex=4 }; - /// Compiles the given POSIX Extended Regular Expression \p Regex. - /// This implementation supports regexes and matching strings with embedded - /// NUL characters. + /// Compiles the given regular expression \p Regex. Regex(StringRef Regex, unsigned Flags = NoFlags); ~Regex(); |