Moduleregex-1.1.0.2Haskell2010

Text.RE.Tools.Lex

1 type
1 class
4 values

Packageregex-1.1.0.2
Exports6
LanguageHaskell2010
LicenceBSD-3-Clause
SourceLex.lhs

Find

2 declarations

The Lex toolkit uses REs to identify tokens in a file, returning a list of tokens.

See the Regex Tools tutorial at http://re-tutorial-tools.regex.uk

valuealex :: IsRegex re s => [(re, Match s -> Maybe t)] -> t -> s -> [t]

a simple regex-based scanner interpreter for prototyping scanners

valuealex'

:: Replace s
=> re -> s -> Match s
-> [(re, Match s -> Maybe t)]
-> t
-> s
-> [t]

a higher order version of alex parameterised over the matchOnce function

IsRegex

4 declarations

classclass Replace s => IsRegex re s where

the IsRegex class allows polymorhic tools to be written that will work with a variety of regex back ends and text types

Methods

matchOnce :: re -> s -> Match s
finding the first match
matchMany :: re -> s -> Matches s
finding all matches
makeRegex :: (Functor m, Monad m, MonadFail m) => s -> m re
compiling an RE, failing if the RE is not well formed
makeRegexWith :: (Functor m, Monad m, MonadFail m) => SimpleREOptions -> s -> m re
comiling an RE, specifying the SimpleREOptions
makeSearchReplace :: (Functor m, Monad m, MonadFail m, IsRegex re s) => s -> s -> m (SearchReplace re s)
compiling a SearchReplace template from the RE text and the template Text, failing if they are not well formed
makeSearchReplaceWith :: (Functor m, Monad m, MonadFail m, IsRegex re s) => SimpleREOptions -> s -> s -> m (SearchReplace re s)
compiling a SearchReplace template specifying the SimpleREOptions for the RE
makeEscaped :: (Functor m, Monad m, MonadFail m) => (s -> s) -> s -> m re
incorporate an escaped string into a compiled RE with the default options
makeEscapedWith :: (Functor m, Monad m, MonadFail m) => SimpleREOptions -> (s -> s) -> s -> m re
incorporate an escaped string into a compiled RE with the specified SimpleREOptions
regexSource :: re -> s
extract the text of the RE from the RE

Instances6IsRegex

IsRegex RE ByteStringDefined in regex-1.1.0.2 · Text.RE.TDFA.ByteString · orphan
IsRegex RE ByteStringDefined in regex-1.1.0.2 · Text.RE.TDFA.ByteString.Lazy · orphan
IsRegex RE StringDefined in regex-1.1.0.2 · Text.RE.TDFA.String · orphan
IsRegex RE TextDefined in regex-1.1.0.2 · Text.RE.TDFA.Text · orphan
IsRegex RE TextDefined in regex-1.1.0.2 · Text.RE.TDFA.Text.Lazy · orphan
IsRegex RE (Seq Char)Defined in regex-1.1.0.2 · Text.RE.TDFA.Sequence · orphan

datadata SearchReplace re s

contains a compiled RE and replacement template

Constructors

SearchReplace
- getSearch :: !re
  the RE to match a string to replace
- getTemplate :: !s
  the replacement template with ${cap} used to identify a capture (by number or name if one was given) and $$ being used to escape a single $

Instances2Functor, Show

Functor (SearchReplace re)Defined in regex-1.1.0.2 · Text.RE.ZeInternals.Types.SearchReplace
(Show re, Show s) => Show (SearchReplace re s)Defined in regex-1.1.0.2 · Text.RE.ZeInternals.Types.SearchReplace

valuesearchReplaceAll :: IsRegex re s => SearchReplace re s -> s -> s

search and replace all matches in the argument text; e.g., this function will convert every YYYY-MM-DD format date in its argument text into a DD/MM/YYYY date:

searchReplaceAll [ed|${y}([0-9]{4})-0*${m}([0-9]{2})-0*${d}([0-9]{2})///${d}/${m}/${y}|]

valuesearchReplaceFirst :: IsRegex re s => SearchReplace re s -> s -> s

search and replace the first occurrence only (if any) in the input text e.g., to prefix the first string of four hex digits in the imput text, if any, with 0x:

searchReplaceFirst [ed|[0-9A-Fa-f]{4}///0x$0|]

Replace

0 declarations

module Text.RE.Replace