62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
// This extractor is used in level 2 optimizations
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// IMPORTANT: Mind Token class and this code is not related!
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// Properties will be tokenized in one step, see #429
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var Token = require('../../tokenizer/token');
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var serializeRules = require('../../writer/one-time').rules;
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var serializeValue = require('../../writer/one-time').value;
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function extractProperties(token) {
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var properties = [];
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var inSpecificSelector;
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var property;
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var name;
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var value;
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var i, l;
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if (token[0] == Token.RULE) {
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inSpecificSelector = !/[.+>~]/.test(serializeRules(token[1]));
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for (i = 0, l = token[2].length; i < l; i++) {
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property = token[2][i];
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if (property[0] != Token.PROPERTY) { continue; }
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name = property[1][1];
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if (name.length === 0) { continue; }
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value = serializeValue(property, i);
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properties.push([
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name,
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value,
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findNameRoot(name),
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token[2][i],
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name + ':' + value,
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token[1],
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inSpecificSelector
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]);
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}
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} else if (token[0] == Token.NESTED_BLOCK) {
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for (i = 0, l = token[2].length; i < l; i++) {
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properties = properties.concat(extractProperties(token[2][i]));
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}
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}
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return properties;
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}
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function findNameRoot(name) {
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if (name == 'list-style') { return name; }
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if (name.indexOf('-radius') > 0) { return 'border-radius'; }
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if (name == 'border-collapse' || name == 'border-spacing' || name == 'border-image') { return name; }
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if (name.indexOf('border-') === 0 && /^border-\w+-\w+$/.test(name)) { return name.match(/border-\w+/)[0]; }
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if (name.indexOf('border-') === 0 && /^border-\w+$/.test(name)) { return 'border'; }
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if (name.indexOf('text-') === 0) { return name; }
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if (name == '-chrome-') { return name; }
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return name.replace(/^-\w+-/, '').match(/([a-zA-Z]+)/)[0].toLowerCase();
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}
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module.exports = extractProperties;
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