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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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    <h3>The PEG.js Mode</h3>
    <p> Created by Forbes Lindesay.</p>
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