33 lines
820 B
JavaScript
33 lines
820 B
JavaScript
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"use strict";
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module.exports = {
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/**
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* Simplifies the token stream to ease the matching with the expected token stream.
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*
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* * Strings are kept as-is
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* * In arrays each value is transformed individually
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* * Values that are empty (empty arrays or strings only containing whitespace)
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*
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*
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* @param {Array} tokenStream
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* @returns {Array.<string[]|Array>}
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*/
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simplify: function (tokenStream) {
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if (Array.isArray(tokenStream)) {
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return tokenStream
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.map(this.simplify.bind(this))
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.filter(function (value) {
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return !(Array.isArray(value) && !value.length) && !(typeof value === "string" && !value.trim().length);
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}
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);
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}
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else if (typeof tokenStream === "object") {
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return [tokenStream.type, this.simplify(tokenStream.content)];
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}
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else {
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return tokenStream;
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}
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}
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};
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