refactored Ruleset/find() method, and added a match() method to Selector, to do selector matching.

lib/less/node/ruleset.js

@@ -10,27 +10,30 @@ tree.Ruleset.prototype = {
             if (r instanceof tree.Rule && r.variable === true) { return r }
         });
     },
-    mixable: function (fun) {
-        return this.rules.filter(function (r) {
-            if (r instanceof tree.mixin.Definition || r instanceof tree.Ruleset) {
-                if (typeof(fun) === 'function') {
-                    return fun.call(this, r);
-                } else { return r }
-            }
-        });
-    },
-    find: function (selector) {
-        return this.mixable(function (rule) {
-            for (var j = 0; j < rule.selectors.length; j++) {
-                if (selector.elements[0].value === rule.selectors[j].elements[0].value) {
-                    if (selector.elements.length > 1) {
-                        return rule.find(new(tree.Selector)(selector.elements.slice(1)));
-                    } else {
-                        return rule;
+    find: function (selector, self) {
+        self = self || this;
+        var rules = [], rule, match;
+
+        for (var i = 0; i < this.rules.length; i++) {
+            rule = this.rules[i];
+
+            if ((rule instanceof tree.mixin.Definition ||
+                 rule instanceof tree.Ruleset) && rule !== self) {
+
+                for (var j = 0; j < rule.selectors.length; j++) {
+                    if (match = selector.match(rule.selectors[j])) {
+                        if (selector.elements.length > 1) {
+                            Array.prototype.push.apply(rules, rule.find(
+                                new(tree.Selector)(selector.elements.slice(1)), self));
+                        } else {
+                            rules.push(rule);
+                        }
+                        break;
                     }
                 }
             }
-        });
+        }
+        return rules
     },
     //
     // Entry point for code generation

lib/less/node/selector.js

@@ -1,6 +1,13 @@
 if (typeof(window) === 'undefined') { var tree = require(require('path').join(__dirname, '..', '..', 'less', 'tree')); }
 
 tree.Selector = function Selector(elements) { this.elements = elements };
+tree.Selector.prototype.match = function (other) {
+    if (this.elements[0].value === other.elements[0].value) {
+        return true;
+    } else {
+        return false;
+    }
+};
 tree.Selector.prototype.toCSS = function () {
     return this.elements.map(function (e) {
         if (typeof(e) === 'string') {