- PEG.js Mode - -/* - * 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]+ - - The PEG.js Mode - Created by Forbes Lindesay. -
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