node-less/lib/joinSelectorVisitor.js

Less Compiler For Node

(function (module) {

    var visitor = require('./visitor.js');

    var joinSelectorVisitor = function() {
        this.contexts = [[]];
        this._visitor = new visitor(this);
    };

    joinSelectorVisitor.prototype = {
        run: function (root) {
            return this._visitor.visit(root);
        },
        visitRule: function (ruleNode, visitArgs) {
            visitArgs.visitDeeper = false;
        },
        visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
            visitArgs.visitDeeper = false;
        },

        visitRuleset: function (rulesetNode, visitArgs) {
            var context = this.contexts[this.contexts.length - 1];
            var paths = [];
            this.contexts.push(paths);
            if (! rulesetNode.root) {
                rulesetNode.joinSelectors(paths, context, rulesetNode.selectors);
                rulesetNode.paths = paths;
            }
        },
        visitRulesetOut: function (rulesetNode) {
            this.contexts.length = this.contexts.length - 1;
        },
        visitMedia: function (mediaNode, visitArgs) {
            var context = this.contexts[this.contexts.length - 1];
            mediaNode.ruleset.root = (context.length === 0 || context[0].multiMedia);
        }
    };

    module.exports = joinSelectorVisitor;

})(module);