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66 lines
1.8 KiB
66 lines
1.8 KiB
<!doctype html>
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<html>
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<head>
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<title>CodeMirror: PEG.js Mode</title>
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<meta charset="utf-8"/>
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<link rel=stylesheet href="../../doc/docs.css">
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<link rel="stylesheet" href="../../lib/codemirror.css">
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<script src="../../lib/codemirror.js"></script>
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<script src="../javascript/javascript.js"></script>
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<script src="pegjs.js"></script>
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<style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
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</head>
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<body>
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<div id=nav>
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<a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
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<ul>
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<li><a href="../../index.html">Home</a>
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<li><a href="../../doc/manual.html">Manual</a>
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<li><a href="https://github.com/codemirror/codemirror">Code</a>
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</ul>
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<ul>
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<li><a href="../index.html">Language modes</a>
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<li><a class=active href="#">PEG.js Mode</a>
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</ul>
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</div>
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<article>
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<h2>PEG.js Mode</h2>
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<form><textarea id="code" name="code">
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/*
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* Classic example grammar, which recognizes simple arithmetic expressions like
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* "2*(3+4)". The parser generated from this grammar then computes their value.
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*/
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start
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= additive
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additive
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= left:multiplicative "+" right:additive { return left + right; }
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/ multiplicative
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multiplicative
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= left:primary "*" right:multiplicative { return left * right; }
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/ primary
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primary
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= integer
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/ "(" additive:additive ")" { return additive; }
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integer "integer"
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= digits:[0-9]+ { return parseInt(digits.join(""), 10); }
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letter = [a-z]+</textarea></form>
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<script>
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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mode: {name: "pegjs"},
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lineNumbers: true
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});
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</script>
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<h3>The PEG.js Mode</h3>
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<p> Created by Forbes Lindesay.</p>
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</article>
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</body>
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</html>
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