fix($parse): get rid of $unboundFn

Closes angular#731

Author: IgorMinar

src/Angular.js

@@ -686,7 +686,6 @@ function equals(o1, o2) {
         return true;
       }
     }
-    if (t1 == 'function' && o1.$unboundFn) return o1.$unboundFn === o2.$unboundFn;
   }
   return false;
 }

src/service/parse.js

@@ -144,18 +144,40 @@ function lex(text){
       fn:function() {return number;}});
   }
   function readIdent() {
-    var ident = "";
-    var start = index;
-    var fn;
+    var ident = "",
+        start = index,
+        fn, lastDot, peekIndex, methodName;
+
     while (index < text.length) {
       var ch = text.charAt(index);
       if (ch == '.' || isIdent(ch) || isNumber(ch)) {
+        if (ch == '.') lastDot = index;
         ident += ch;
       } else {
         break;
       }
       index++;
     }
+
+    //check if this is not a method invocation and if it is back out to last dot
+    if (lastDot) {
+      peekIndex = index
+      while(peekIndex < text.length) {
+        var ch = text.charAt(peekIndex);
+        if (ch == '(') {
+          methodName = ident.substr(lastDot - start + 1);
+          ident = ident.substr(0, lastDot - start);
+          index = peekIndex;
+          break;
+        }
+        if(isWhitespace(ch)) {
+          peekIndex++;
+        } else {
+          break;
+        }
+      }
+    }
+
     fn = OPERATORS[ident];
     tokens.push({
       index:start,
@@ -167,6 +189,19 @@ function lex(text){
         }
       })
     });
+
+    if (methodName) {
+      tokens.push({
+        index:lastDot,
+        text: '.',
+        json: false
+      });
+      tokens.push({
+        index: lastDot + 1,
+        text: methodName,
+        json: false
+      });
+    }
   }
 
   function readString(quote) {
@@ -490,13 +525,17 @@ function parser(text, json, $filter){
         throwError("not a primary expression", token);
       }
     }
-    var next;
+
+    var next, context;
     while ((next = expect('(', '[', '.'))) {
       if (next.text === '(') {
-        primary = functionCall(primary);
+        primary = functionCall(primary, context);
+        context = null;
       } else if (next.text === '[') {
+        context = primary;
         primary = objectIndex(primary);
       } else if (next.text === '.') {
+        context = primary;
         primary = fieldAccess(primary);
       } else {
         throwError("IMPOSSIBLE");
@@ -544,7 +583,7 @@ function parser(text, json, $filter){
       });
   }
 
-  function _functionCall(fn) {
+  function _functionCall(fn, contextGetter) {
     var argsFn = [];
     if (peekToken().text != ')') {
       do {
@@ -553,14 +592,16 @@ function parser(text, json, $filter){
     }
     consume(')');
     return function(self){
-      var args = [];
+      var args = [],
+          context = contextGetter ? contextGetter(self) : self;
+
       for ( var i = 0; i < argsFn.length; i++) {
         args.push(argsFn[i](self));
       }
       var fnPtr = fn(self) || noop;
       // IE stupidity!
       return fnPtr.apply
-          ? fnPtr.apply(self, args)
+          ? fnPtr.apply(context, args)
           : fnPtr(args[0], args[1], args[2], args[3], args[4]);
     };
   }
@@ -691,11 +732,7 @@ function getterFn(path) {
     code += 'if(!s) return s;\n' +
             'l=s;\n' +
             's=s' + key + ';\n' +
-            'if(typeof s=="function" && !(s instanceof RegExp)) {\n' +
-              ' fn=function(){ return l' + key + '.apply(l, arguments); };\n' +
-              ' fn.$unboundFn=s;\n' +
-              ' s=fn;\n' +
-            '} else if (s && s.then) {\n' +
+            'if (s && s.then) {\n' +
               ' if (!("$$v" in s)) {\n' +
                 ' p=s;\n' +
                 ' p.$$v = undefined;\n' +

src/widget/input.js

@@ -741,7 +741,7 @@ var inputDirective = ['$defer', '$formFactory', function($defer, $formFactory) {
 
       type = lowercase(type);
       TypeController = (loadFromScope
-              ? (assertArgFn(modelScope.$eval(loadFromScope[1]), loadFromScope[1])).$unboundFn
+              ? assertArgFn(modelScope.$eval(loadFromScope[1]), loadFromScope[1])
               : angularInputType(type)) || noop;
 
       if (!HTML5_INPUTS_TYPES[type]) {

test/service/parseSpec.js

@@ -110,6 +110,20 @@ describe('parser', function() {
       expect(tokens[3].text).toEqual(';');
     });
 
+    it('should tokenize method invocation', function() {
+      var tokens = lex("a.b.c (d) - e.f()");
+      expect(tokens[0].text).toBe('a.b');
+      expect(tokens[1].text).toBe('.');
+      expect(tokens[2].text).toBe('c');
+      expect(tokens[3].text).toBe('(');
+      expect(tokens[4].text).toBe('d');
+      expect(tokens[5].text).toBe(')');
+      expect(tokens[6].text).toBe('-');
+      expect(tokens[7].text).toBe('e');
+      expect(tokens[8].text).toBe('.');
+      expect(tokens[9].text).toBe('f');
+    });
+
     it('should tokenize number', function() {
       var tokens = lex("0.5");
       expect(tokens[0].text).toEqual(0.5);
@@ -244,6 +258,12 @@ describe('parser', function() {
     expect(scope.$eval("add(1,2)")).toEqual(3);
   });
 
+  it('should evaluate function call from a return value', function() {
+    scope.val = 33;
+    scope.getter = function() { return function() { return this.val; }};
+    expect(scope.$eval("getter()()")).toBe(33);
+  });
+
   it('should evaluate multiplication and division', function() {
     scope.taxRate =  8;
     scope.subTotal =  100;
@@ -296,6 +316,7 @@ describe('parser', function() {
 
     scope.obj = new C();
     expect(scope.$eval("obj.getA()")).toEqual(123);
+    expect(scope.$eval("obj['getA']()")).toEqual(123);
   });
 
   it('should evaluate methods in correct context (this) in argument', function() {
@@ -311,6 +332,7 @@ describe('parser', function() {
 
     scope.obj = new C();
     expect(scope.$eval("obj.sum(obj.getA())")).toEqual(246);
+    expect(scope.$eval("obj['sum'](obj.getA())")).toEqual(246);
   });
 
   it('should evaluate objects on scope context', function() {

test/service/scopeSpec.js

@@ -252,7 +252,7 @@ describe('Scope', function() {
       module(provideLog);
       inject(function($rootScope, log) {
         $rootScope.fn = function() {return 'a'};
-        $rootScope.$watch('fn', function(scope, fn) {
+        $rootScope.$watch('fn', function(fn) {
           log(fn());
         });
         $rootScope.$digest();