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<h1 class="headline">Template::Parser</h1>
<h2 class="subhead">LALR(1) parser for compiling template documents</h1>
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<li class=""><a href="#SYNOPSIS">SYNOPSIS</a></li>
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<li class=""><a href="#PUBLIC_METHODS">PUBLIC METHODS</a></li>
<li class="sub"><a href="#method_new">new(\%params)</a></li>
<li class="sub"><a href="#method_parse">parse($text)</a></li>
<li class=""><a href="#CONFIGURATION_OPTIONS">CONFIGURATION OPTIONS</a></li>
<li class="sub"><a href="#section_START_TAG_END_TAG">START_TAG, END_TAG</a></li>
<li class="sub"><a href="#section_TAG_STYLE">TAG_STYLE</a></li>
<li class="sub"><a href="#section_PRE_CHOMP_POST_CHOMP">PRE_CHOMP, POST_CHOMP</a></li>
<li class="sub"><a href="#section_INTERPOLATE">INTERPOLATE</a></li>
<li class="sub"><a href="#section_ANYCASE">ANYCASE</a></li>
<li class="sub"><a href="#section_GRAMMAR">GRAMMAR</a></li>
<li class="sub"><a href="#section_DEBUG">DEBUG</a></li>
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<pre>use Template::Parser;
$parser = Template::Parser->new(\%config);
$template = $parser->parse($text)
|| die $parser->error(), "\n";</pre>
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<h1 id="DESCRIPTION" onclick="switch_section(this)" title="Click title to show/hide section content.">DESCRIPTION</h1>
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<p>
The <code>Template::Parser</code> module implements a LALR(1) parser and
associated methods for parsing template documents into Perl code.
</p>
</div>
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<h1 id="PUBLIC_METHODS" onclick="switch_section(this)" title="Click title to show/hide section content.">PUBLIC METHODS</h1>
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<h2 id="method_new" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">new(\%params)</h2>
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<p>
The <code>new()</code> constructor creates and returns a reference to a
new <code>Template::Parser</code> object.
</p>
<p>
A reference to a hash may be supplied as a parameter to provide
configuration values. See <a href="#CONFIGURATION_OPTIONS">CONFIGURATION
OPTIONS</a> below for a summary of these options and <a href="../../manual/Config.html">Template::Manual::Config</a>
for full details.
</p>
<pre>my $parser = Template::Parser->new({
START_TAG => quotemeta('<+'),
END_TAG => quotemeta('+>'),
});</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="method_parse" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">parse($text)</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
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<p>
The <code>parse()</code> method parses the text passed in the first
parameter and returns a reference to a hash array of data defining the
compiled representation of the template text, suitable for passing to the
<a href="../../modules/Template/Document.html">Template::Document</a>
<a href="../../modules/Template/Document.html#method_new">new()</a>
constructor method. On error, undef is returned.
</p>
<pre>$data = $parser->parse($text)
|| die $parser->error();</pre>
<p>
The <code>$data</code> hash reference returned contains a
<code>BLOCK</code> item containing the compiled Perl code for the
template, a <code>DEFBLOCKS</code> item containing a reference to a hash
array of sub-template <code>BLOCK</code>s defined within in the template,
and a <code>METADATA</code> item containing a reference to a hash array
of metadata values defined in <code>META</code> tags.
</p>
</div>
</div>
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<div class="section">
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<h1 id="CONFIGURATION_OPTIONS" onclick="switch_section(this)" title="Click title to show/hide section content.">CONFIGURATION OPTIONS</h1>
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</div>
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<p>
The <code>Template::Parser</code> module accepts the following
configuration options. Please see <a href="../../manual/Config.html">Template::Manual::Config</a>
for futher details on each option.
</p>
<div class="subsection">
<div class="head">
<h2 id="section_START_TAG_END_TAG" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">START_TAG, END_TAG</h2>
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</div>
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<p>
The <a href="../../manual/Config.html#section_START_TAG_END_TAG">START_TAG</a> and <a href="../../manual/Config.html#section_START_TAG_END_TAG">END_TAG</a> options are used to specify
character sequences or regular expressions that mark the start and end of
a template directive.
</p>
<pre>my $parser = Template::Parser->new({
START_TAG => quotemeta('<+'),
END_TAG => quotemeta('+>'),
});</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_TAG_STYLE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">TAG_STYLE</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <a href="../../manual/Config.html#section_TAG_STYLE">TAG_STYLE</a> option can be used to set both <a
href="#section_START_TAG">START_TAG</a> and <a
href="#section_END_TAG">END_TAG</a> according to pre-defined tag styles.
</p>
<pre>my $parser = Template::Parser->new({
TAG_STYLE => 'star', # [* ... *]
});</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_PRE_CHOMP_POST_CHOMP" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">PRE_CHOMP, POST_CHOMP</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <a href="../../manual/Config.html#section_PRE_CHOMP_POST_CHOMP">PRE_CHOMP</a> and <a href="../../manual/Config.html#section_PRE_CHOMP_POST_CHOMP">POST_CHOMP</a> can be set to remove any
whitespace before or after a directive tag, respectively.
</p>
<pre>my $parser = Template::Parser-E<gt>new({
PRE_CHOMP => 1,
POST_CHOMP => 1,
});</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_INTERPOLATE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">INTERPOLATE</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <a href="../../manual/Config.html#section_INTERPOLATE">INTERPOLATE</a> flag can be set to allow
variables to be embedded in plain text blocks.
</p>
<pre>my $parser = Template::Parser->new({
INTERPOLATE => 1,
});</pre>
<p>
Variables should be prefixed by a <code>$</code> to identify them, using
curly braces to explicitly scope the variable name where necessary.
</p>
<pre>Hello ${name},
The day today is ${day.today}.</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_ANYCASE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ANYCASE</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <a href="../../manual/Config.html#section_ANYCASE">ANYCASE</a> option can be set to allow directive
keywords to be specified in any case.
</p>
<pre># with ANYCASE set to 1
<span class="tt">[% INCLUDE foobar %]</span> # OK
<span class="tt">[% include foobar %]</span> # OK
<span class="tt">[% include = 10 %]</span> # ERROR, 'include' is a reserved word</pre>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_GRAMMAR" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">GRAMMAR</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <a href="../../manual/Config.html#section_GRAMMAR">GRAMMAR</a> configuration item can be used to
specify an alternate grammar for the parser. This allows a modified or
entirely new template language to be constructed and used by the Template
Toolkit.
</p>
<pre>use MyOrg::Template::Grammar;
my $parser = Template::Parser->new({
GRAMMAR = MyOrg::Template::Grammar->new();
});</pre>
<p>
By default, an instance of the default <a href="../../modules/Template/Grammar.html">Template::Grammar</a> will be created
and used automatically if a <code>GRAMMAR</code> item isn't specified.
</p>
</div>
</div> <div class="subsection">
<div class="head">
<h2 id="section_DEBUG" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">DEBUG</h2>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
The <a href="../../manual/Config.html#section_DEBUG">DEBUG</a> option can be used to enable various
debugging features of the <code>Template::Parser</code> module.
</p>
<pre>use Template::Constants qw( :debug );
my $template = Template->new({
DEBUG => DEBUG_PARSER | DEBUG_DIRS,
});</pre>
</div>
</div>
</div>
</div>
<div class="section">
<div class="head">
<h1 id="AUTHOR" onclick="switch_section(this)" title="Click title to show/hide section content.">AUTHOR</h1>
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</div>
<div class="body">
<p>
Andy Wardley <abw@wardley.org> <a
href="http://wardley.org/">http://wardley.org/</a>
</p>
</div>
</div>
<div class="section">
<div class="head">
<h1 id="COPYRIGHT" onclick="switch_section(this)" title="Click title to show/hide section content.">COPYRIGHT</h1>
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</div>
<div class="body">
<p>
Copyright (C) 1996-2007 Andy Wardley. All Rights Reserved.
</p>
<p>
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
</p>
<p>
The main parsing loop of the <code>Template::Parser</code> module was
derived from a standalone parser generated by version 0.16 of the
<code>Parse::Yapp</code> module. The following copyright notice appears
in the <code>Parse::Yapp</code> documentation.
</p>
<pre>The Parse::Yapp module and its related modules and shell
scripts are copyright (c) 1998 Francois Desarmenien,
France. All rights reserved.
You may use and distribute them under the terms of either
the GNU General Public License or the Artistic License, as
specified in the Perl README file.</pre>
</div>
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<h1 id="SEE_ALSO" onclick="switch_section(this)" title="Click title to show/hide section content.">SEE ALSO</h1>
<a href="#body" class="top" title="Back up to the top of the page" >Top</a>
</div>
<div class="body">
<p>
<a href="../../modules/Template.html">Template</a>, <a href="../../modules/Template/Grammar.html">Template::Grammar</a>, <a href="../../modules/Template/Directive.html">Template::Directive</a>
</p>
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