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| <title>Parser Transformer</title> |
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| <meta content="Stephan Michels" name="DC.Creator"> |
| <meta content="This document describes the parser transformer of Cocoon." name="DC.Description"> |
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| <h1>Parser Transformer</h1> |
| |
| <p>The parser transformer builds a syntax tree of a list of lexemes |
| (tokens), by using a grammar file.</p> |
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| <ul> |
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| <li>Name: parser</li> |
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| <li>Class: org.apache.cocoon.transformation.ParserTransformer</li> |
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| <li>Cacheable: yes - uses the last modification date of the grammar |
| document for validation.</li> |
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| </ul> |
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| <p>The parser uses the following elements from the SAX stream, and |
| replaces them through a syntax tree.</p> |
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| |
| <pre class="code"> |
| <lexemes xmlns="http://chaperon.sourceforge.net/schema/lexemes/1.0"> |
| <lexeme symbol="word" text="..."/> |
| <lexeme symbol="word" text="..."/> |
| <lexeme symbol="word" text="..."/> |
| <lexeme symbol="punctation" text="..."/> |
| </lexemes> |
| </pre> |
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| <p>The parser transformer will replace those elements with a syntax tree. |
| </p> |
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| <pre class="code"> |
| <paragraph xmlns="http://chaperon.sourceforge.net/schema/syntaxtree/1.0"> |
| <sentence> |
| <word>...</word> |
| <word>...</word> |
| <word>...</word> |
| <punctation>...</punctation> |
| </sentence> |
| </paragraph> |
| </pre> |
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| <p>A detailed explanation of function and the grammar format can be found at <a class="external" href="http://chaperon.sourceforge.net/">Chaperon</a>.</p> |
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