refactor($parse): small readability improvements

Author: IgorMinar

src/ng/parse.js

@@ -713,7 +713,7 @@ Parser.prototype = {
     });
   },
 
-  functionCall: function(fn, contextGetter) {
+  functionCall: function(fnGetter, contextGetter) {
     var argsFn = [];
     if (this.peekToken().text !== ')') {
       do {
@@ -722,29 +722,28 @@ Parser.prototype = {
     }
     this.consume(')');
 
-    var parser = this;
+    var expressionText = this.text;
     var args = []; // we can safely reuse the array
 
     return function(scope, locals) {
       var context = contextGetter ? contextGetter(scope, locals) : scope;
+      var fn = fnGetter(scope, locals, context) || noop;
 
 
       var i = argsFn.length;
       while (i--) {
         args[i] = argsFn[i](scope, locals);
       }
 
-      var fnPtr = fn(scope, locals, context) || noop;
-
-      ensureSafeObject(context, parser.text);
-      ensureSafeFunction(fnPtr, parser.text);
+      ensureSafeObject(context, expressionText);
+      ensureSafeFunction(fn, expressionText);
 
       // IE stupidity! (IE doesn't have apply for some native functions)
-      var v = fnPtr.apply
-            ? fnPtr.apply(context, args)
-            : fnPtr(args[0], args[1], args[2], args[3], args[4]);
+      var v = fn.apply
+            ? fn.apply(context, args)
+            : fn(args[0], args[1], args[2], args[3], args[4]);
 
-      return ensureSafeObject(v, parser.text);
+      return ensureSafeObject(v, expressionText);
     };
   },