refactoring of prototypes

lib/less/tree/expression.js

@@ -1,22 +1,24 @@
 if (typeof(window) === 'undefined') { var tree = require(require('path').join(__dirname, '..', '..', 'less', 'tree')); }
 
 tree.Expression = function Expression(value) { this.value = value };
-tree.Expression.prototype.eval = function (env) {
-    if (this.value.length > 1) {
-        return new(tree.Expression)(this.value.map(function (e) {
-            return e.eval(env);
-        }));
-    } else {
-        return this.value[0].eval(env); 
-    }
-};
-tree.Expression.prototype.toCSS = function (env) {
-    var evaled;
-    evaled = this.value.map(function (e) {
-        if (e.eval) {
-            e = e.eval(env);
+tree.Expression.prototype = {
+    eval: function (env) {
+        if (this.value.length > 1) {
+            return new(tree.Expression)(this.value.map(function (e) {
+                return e.eval(env);
+            }));
+        } else {
+            return this.value[0].eval(env);
         }
-        return e.toCSS ? e.toCSS(env) : e;
-    });
-    return evaled.join(' ');
+    },
+    toCSS: function (env) {
+        var evaled;
+        evaled = this.value.map(function (e) {
+            if (e.eval) {
+                e = e.eval(env);
+            }
+            return e.toCSS ? e.toCSS(env) : e;
+        });
+        return evaled.join(' ');
+    }
 };

lib/less/tree/rule.js

@@ -20,16 +20,18 @@ tree.Value = function Value(value) {
     this.value = value;
     this.is = 'value';
 };
-tree.Value.prototype.eval = function (env) {
-    if (this.value.length === 1) {
-        return this.value[0].eval(env);
-    } else {
-        return this;
+tree.Value.prototype = {
+    eval: function (env) {
+        if (this.value.length === 1) {
+            return this.value[0].eval(env);
+        } else {
+            return this;
+        }
+    },
+    toCSS: function (env) {
+        return this.value.map(function (e) {
+            return e.toCSS ? e.toCSS(env) : e;
+        }).join(', ');
     }
 };
-tree.Value.prototype.toCSS = function (env) {
-    return this.value.map(function (e) {
-        return e.toCSS ? e.toCSS(env) : e;
-    }).join(', ');
-};