Safe Haskell	Safe
Language	Haskell98

Text.Regex.PDeriv.ByteString.RightToLeft

Synopsis

Documentation

data Regex Source #

The PDeriv backend spepcific Regex type

Instances

RegexOptions Regex CompOption ExecOption Source #
Methods blankCompOpt :: CompOption # blankExecOpt :: ExecOption # defaultCompOpt :: CompOption # defaultExecOpt :: ExecOption # setExecOpts :: ExecOption -> Regex -> Regex # getExecOpts :: Regex -> ExecOption #

data CompOption Source #

Control whether the pattern is multiline or case-sensitive like Text.Regex and whether to capture the subgroups (1, 2, etc). Controls enabling extra anchor syntax.

Constructors

CompOption

Fields

caseSensitive :: Bool
True in blankCompOpt and defaultCompOpt
multiline :: Bool
False in blankCompOpt, True in defaultCompOpt. Compile for newline-sensitive matching. "By default, newline is a completely ordinary character with no special meaning in either REs or strings. With this flag, inverted bracket expressions and . never match newline, a ^ anchor matches the 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."
rightAssoc :: Bool
True (and therefore Right associative) in blankCompOpt and defaultCompOpt
newSyntax :: Bool
False in blankCompOpt, True in defaultCompOpt. Add the extended non-POSIX syntax described in Text.Regex.TDFA haddock documentation.
lastStarGreedy :: Bool
False by default. This is POSIX correct but it takes space and is slower. Setting this to true will improve performance, and should be done if you plan to set the captureGroups execoption to False.

Instances

Read CompOption Source #
Methods readsPrec :: Int -> ReadS CompOption # readList :: ReadS [CompOption] # readPrec :: ReadPrec CompOption # readListPrec :: ReadPrec [CompOption] #
Show CompOption Source #
Methods showsPrec :: Int -> CompOption -> ShowS # show :: CompOption -> String # showList :: [CompOption] -> ShowS #
RegexOptions Regex CompOption ExecOption Source #
Methods blankCompOpt :: CompOption # blankExecOpt :: ExecOption # defaultCompOpt :: CompOption # defaultExecOpt :: ExecOption # setExecOpts :: ExecOption -> Regex -> Regex # getExecOpts :: Regex -> ExecOption #

data ExecOption Source #

Constructors

ExecOption
Fields captureGroups :: Bool True by default. Set to False to improve speed (and space).

Instances

Read ExecOption Source #
Methods readsPrec :: Int -> ReadS ExecOption # readList :: ReadS [ExecOption] # readPrec :: ReadPrec ExecOption # readListPrec :: ReadPrec [ExecOption] #
Show ExecOption Source #
Methods showsPrec :: Int -> ExecOption -> ShowS # show :: ExecOption -> String # showList :: [ExecOption] -> ShowS #
RegexOptions Regex CompOption ExecOption Source #
Methods blankCompOpt :: CompOption # blankExecOpt :: ExecOption # defaultCompOpt :: CompOption # defaultExecOpt :: ExecOption # setExecOpts :: ExecOption -> Regex -> Regex # getExecOpts :: Regex -> ExecOption #

defaultCompOpt :: RegexOptions regex compOpt execOpt => compOpt #

defaultExecOpt :: RegexOptions regex compOpt execOpt => execOpt #

compile Source #

Arguments

:: CompOption	Flags (summed together)
-> ExecOption	Flags (summed together)
-> ByteString	The regular expression to compile
-> Either String Regex	Returns: the compiled regular expression

execute Source #

Arguments

:: Regex	Compiled regular expression
-> ByteString	ByteString to match against
-> Either String (Maybe Env)

regexec Source #

Arguments

:: Regex	Compiled regular expression
-> ByteString	ByteString to match against
-> Either String (Maybe (ByteString, ByteString, ByteString, [ByteString]))

parsePat :: String -> Either ParseError Pat Source #