Text.Regex.TDFA.String

This modules provides RegexMaker and RegexLike instances for using String with the TDFA backend.

This exports instances of the high level API and the medium level API of compile,execute, and regexec.

Types

data Regex

The TDFA backend specific Regex type, used by this module's RegexOptions and RegexMaker

Instances

RegexOptions Regex CompOption ExecOption

type MatchOffset = Int

0 based index from start of source, or (-1) for unused

type MatchLength = Int

non-negative length of a match

data CompOption

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.

Instances

Read CompOption

Show CompOption

RegexOptions Regex CompOption ExecOption

data ExecOption

Instances

Read ExecOption

Show ExecOption

RegexOptions Regex CompOption ExecOption

Medium level API functions

compile

Arguments

:: CompOption

Flags (summed together)

-> ExecOption

Flags (summed together)

-> String

The regular expression to compile (ASCII only, no null bytes)

-> Either String Regex

Returns: the compiled regular expression

execute

Arguments

:: Regex

Compiled regular expression

-> String

String to match against

-> Either String (Maybe MatchArray)

regexec

Arguments

:: Regex

Compiled regular expression

-> String

String to match against

-> Either String (Maybe (String, String, String, [String]))