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<h2>PEG.js Mode</h2>
<form><textarea id="code" name="code">
/*
* Classic example grammar, which recognizes simple arithmetic expressions like
* "2*(3+4)". The parser generated from this grammar then computes their value.
*/
start
= additive
additive
= left:multiplicative "+" right:additive { return left + right; }
/ multiplicative
multiplicative
= left:primary "*" right:multiplicative { return left * right; }
/ primary
primary
= integer
/ "(" additive:additive ")" { return additive; }
integer "integer"
= digits:[0-9]+ { return parseInt(digits.join(""), 10); }
letter = [a-z]+</textarea></form>
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mode: {name: "pegjs"},
lineNumbers: true
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<h3>The PEG.js Mode</h3>
<p> Created by Forbes Lindesay.</p>
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