<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--Rendered using the Haskell Html Library v0.2--> <HTML ><HEAD ><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" ><TITLE >Text.XML.HXT.DTDValidation.XmlRE</TITLE ><LINK HREF="haddock.css" REL="stylesheet" TYPE="text/css" ><SCRIPT SRC="haddock-util.js" TYPE="text/javascript" ></SCRIPT ><SCRIPT TYPE="text/javascript" >window.onload = function () {setSynopsis("mini_Text-XML-HXT-DTDValidation-XmlRE.html")};</SCRIPT ></HEAD ><BODY ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="topbar" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD ><IMG SRC="haskell_icon.gif" WIDTH="16" HEIGHT="16" ALT=" " ></TD ><TD CLASS="title" >hxt-8.3.2: A collection of tools for processing XML with Haskell.</TD ><TD CLASS="topbut" ><A HREF="index.html" >Contents</A ></TD ><TD CLASS="topbut" ><A HREF="doc-index.html" >Index</A ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="modulebar" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD ><FONT SIZE="6" >Text.XML.HXT.DTDValidation.XmlRE</FONT ></TD ><TD ALIGN="right" ><TABLE CLASS="narrow" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="infohead" >Portability</TD ><TD CLASS="infoval" >portable</TD ></TR ><TR ><TD CLASS="infohead" >Stability</TD ><TD CLASS="infoval" >experimental</TD ></TR ><TR ><TD CLASS="infohead" >Maintainer</TD ><TD CLASS="infoval" >Uwe Schmidt (uwe@fh-wedel.de)</TD ></TR ></TABLE ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Description</TD ></TR ><TR ><TD CLASS="doc" ><P >A module for regular expression matching, adapted for XML DTDs. </P ><P >This module is based on the module RE. </P ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Synopsis</TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="decl" ><SPAN CLASS="keyword" >data</SPAN > <A HREF="#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3AcheckRE" >checkRE</A > :: <A HREF="/usr/share/doc/ghc/libraries/base/Text-Show.html#t%3AShow" >Show</A > a => <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A ></TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Amatches" >matches</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A > -> <A HREF="Text-XML-HXT-DOM-TypeDefs.html#t%3AXmlTrees" >XmlTrees</A > -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A ></TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3AprintRE" >printRE</A > :: <A HREF="/usr/share/doc/ghc/libraries/base/Text-Show.html#t%3AShow" >Show</A > a => <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A ></TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_unit" >re_unit</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_zero" >re_zero</A > :: <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A > -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_sym" >re_sym</A > :: a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_rep" >re_rep</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_plus" >re_plus</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_opt" >re_opt</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_seq" >re_seq</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_alt" >re_alt</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="s8" ></TD ></TR ><TR ><TD CLASS="decl" ><A HREF="#v%3Are_dot" >re_dot</A > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="section1" >Documentation</TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><SPAN CLASS="keyword" >data</SPAN > <A NAME="t:RE" ><A NAME="t%3ARE" ></A ></A ><B >RE</B > a </TD ></TR ><TR ><TD CLASS="body" ><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0" ><TR ><TD CLASS="ndoc" >Data type for regular expressions. </TD ></TR ><TR ><TD CLASS="section4" ><IMG SRC="minus.gif" CLASS="coll" ONCLICK="toggle(this,'i:RE')" ALT="show/hide" > Instances</TD ></TR ><TR ><TD CLASS="body" ><DIV ID="i:RE" STYLE="display:block;" ><TABLE CLASS="vanilla" CELLSPACING="1" CELLPADDING="0" ><TR ><TD CLASS="decl" ><A HREF="/usr/share/doc/ghc/libraries/base/Data-Eq.html#t%3AEq" >Eq</A > a => <A HREF="/usr/share/doc/ghc/libraries/base/Data-Eq.html#t%3AEq" >Eq</A > (<A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a)</TD ></TR ><TR ><TD CLASS="decl" ><A HREF="/usr/share/doc/ghc/libraries/base/Text-Show.html#t%3AShow" >Show</A > a => <A HREF="/usr/share/doc/ghc/libraries/base/Text-Show.html#t%3AShow" >Show</A > (<A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a)</TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:checkRE" ><A NAME="v%3AcheckRE" ></A ></A ><B >checkRE</B > :: <A HREF="/usr/share/doc/ghc/libraries/base/Text-Show.html#t%3AShow" >Show</A > a => <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A ></TD ></TR ><TR ><TD CLASS="doc" ><P >Checks if an input matched a regular expression. The function should be called after matches. </P ><P >Was the sentence used in <TT >matches</TT > in the language of the regular expression? -> matches e s == s `in` L(e)? </P ><UL ><LI > 1.parameter re : the derived regular expression </LI ><LI > returns : empty String if input matched the regular expression, otherwise an error message is returned </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:matches" ><A NAME="v%3Amatches" ></A ></A ><B >matches</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A > -> <A HREF="Text-XML-HXT-DOM-TypeDefs.html#t%3AXmlTrees" >XmlTrees</A > -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A ></TD ></TR ><TR ><TD CLASS="doc" ><P >Derives a regular expression with respect to a list of elements. </P ><UL ><LI > 1.parameter re : regular expression </LI ><LI > 2.parameter list : list of elements to which the regular expression is applied </LI ><LI > returns : the derived regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:printRE" ><A NAME="v%3AprintRE" ></A ></A ><B >printRE</B > :: <A HREF="/usr/share/doc/ghc/libraries/base/Text-Show.html#t%3AShow" >Show</A > a => <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A ></TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a string representation of a regular expression. </P ><UL ><LI > 1.parameter re : a regular expression </LI ><LI > returns : the string representation of the regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_unit" ><A NAME="v%3Are_unit" ></A ></A ><B >re_unit</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a regular expression for an empty sequence. </P ><UL ><LI > returns : regular expression for an empty sequence </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_zero" ><A NAME="v%3Are_zero" ></A ></A ><B >re_zero</B > :: <A HREF="/usr/share/doc/ghc/libraries/base/Data-Char.html#t%3AString" >String</A > -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a regular expression for an empty set. </P ><UL ><LI > 1.parameter errMsg : error message </LI ><LI > returns : regular expression for an empty set </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_sym" ><A NAME="v%3Are_sym" ></A ></A ><B >re_sym</B > :: a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a regular expression for accepting a symbol </P ><UL ><LI > 1.parameter sym : the symbol to be accepted </LI ><LI > returns : regular expression for accepting a symbol </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_rep" ><A NAME="v%3Are_rep" ></A ></A ><B >re_rep</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs an optional repetition (*) of a regular expression </P ><UL ><LI > 1.parameter re_a : regular expression to be repeted </LI ><LI > returns : new regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_plus" ><A NAME="v%3Are_plus" ></A ></A ><B >re_plus</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a repetition (+) of a regular expression </P ><UL ><LI > 1.parameter re_a : regular expression to be repeted </LI ><LI > returns : new regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_opt" ><A NAME="v%3Are_opt" ></A ></A ><B >re_opt</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs an option (?) of a regular expression </P ><UL ><LI > 1.parameter re_a : regular expression to be optional </LI ><LI > returns : new regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_seq" ><A NAME="v%3Are_seq" ></A ></A ><B >re_seq</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a sequence (,) of two regular expressions </P ><UL ><LI > 1.parameter re_a : first regular expression in sequence </LI ><LI > 2.parameter re_b : second regular expression in sequence </LI ><LI > returns : new regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_alt" ><A NAME="v%3Are_alt" ></A ></A ><B >re_alt</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a -> <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs an alternative (|) of two regular expressions </P ><UL ><LI > 1.parameter re_a : first regular expression of alternative </LI ><LI > 2.parameter re_b : second regular expression of alternative </LI ><LI > returns : new regular expression </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="decl" ><A NAME="v:re_dot" ><A NAME="v%3Are_dot" ></A ></A ><B >re_dot</B > :: <A HREF="Text-XML-HXT-DTDValidation-XmlRE.html#t%3ARE" >RE</A > a</TD ></TR ><TR ><TD CLASS="doc" ><P >Constructs a regular expression for accepting any singel symbol </P ><UL ><LI > returns : regular expression for accepting any singel symbol </LI ></UL ></TD ></TR ><TR ><TD CLASS="s15" ></TD ></TR ><TR ><TD CLASS="botbar" >Produced by <A HREF="http://www.haskell.org/haddock/" >Haddock</A > version 2.5.0</TD ></TR ></TABLE ></BODY ></HTML >