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var resolveKeyword = require('../../../utils/names.js').keyword;
var walkRules = require('../../../utils/walk.js').rules;
var translate = require('../../../utils/translate.js');
var createDeclarationIndexer = require('./createDeclarationIndexer.js');
var processSelector = require('./processSelector.js');
function walk(node, markDeclaration, usageData) {
switch (node.type) {
case 'Ruleset':
node.block.declarations.each(markDeclaration);
processSelector(node, usageData);
break;
case 'Atrule':
if (node.expression) {
node.expression.id = translate(node.expression);
}
// compare keyframe selectors by its values
// NOTE: still no clarification about problems with keyframes selector grouping (issue #197)
if (resolveKeyword(node.name).name === 'keyframes') {
node.block.avoidRulesMerge = true; /* probably we don't need to prevent those merges for @keyframes
TODO: need to be checked */
node.block.rules.each(function(ruleset) {
ruleset.selector.selectors.each(function(simpleselector) {
simpleselector.compareMarker = simpleselector.id;
});
});
}
break;
}
};
module.exports = function prepare(ast, usageData) {
var markDeclaration = createDeclarationIndexer();
walkRules(ast, function(node) {
walk(node, markDeclaration, usageData);
});
return {
declaration: markDeclaration
};
};
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