refactor(fromJson): always use native JSON.parse

This breaks IE7 for which you can use polyfill:

https://github.com/douglascrockford/JSON-js

<!--[if lt IE 8]>
<script src="json2.min.js"></script>
<![endif]-->

or

http://bestiejs.github.com/json3/

<!--[if lt IE 8]>
<script src="json3.min.js"></script>
<![endif]-->

Author: IgorMinar

src/JSON.js

@@ -27,15 +27,12 @@ function toJson(obj, pretty) {
  * Deserializes a JSON string.
  *
  * @param {string} json JSON string to deserialize.
- * @param {boolean} [useNative=false] Use native JSON parser, if available.
  * @returns {Object|Array|Date|string|number} Deserialized thingy.
  */
-function fromJson(json, useNative) {
-  if (!isString(json)) return json;
-
-  return (useNative && window.JSON && window.JSON.parse)
+function fromJson(json) {
+  return isString(json)
       ? JSON.parse(json)
-      : parseJson(json, true)();
+      : json;
 }
 
 

src/ng/parse.js

@@ -752,9 +752,3 @@ function $ParseProvider() {
     };
   }];
 }
-
-
-// This is a special access for JSON parser which bypasses the injector
-var parseJson = function(json) {
-  return parser(json, true);
-};

test/JsonSpec.js

@@ -1,6 +1,18 @@
 'use strict';
 
 describe('json', function() {
+
+  describe('fromJson', function() {
+
+    it('should delegate to native parser', function() {
+      var spy = spyOn(JSON, 'parse').andCallThrough();
+
+      expect(fromJson('{}')).toEqual({});
+      expect(spy).toHaveBeenCalled();
+    });
+  });
+
+
   it('should serialize primitives', function() {
     expect(toJson(0/0)).toEqual('null');
     expect(toJson(null)).toEqual('null');
@@ -50,15 +62,6 @@ describe('json', function() {
     expect(toJson({a:function() {}})).toEqual('{}');
   });
 
-  it('should parse null', function() {
-    expect(fromJson('null')).toBeNull();
-  });
-
-  it('should parse boolean', function() {
-    expect(fromJson('true')).toBeTruthy();
-    expect(fromJson('false')).toBeFalsy();
-  });
-
   it('should serialize array with empty items', function() {
     var a = [];
     a[1] = 'X';
@@ -111,103 +114,6 @@ describe('json', function() {
     expect(toJson(document)).toEqual('DOCUMENT');
   });
 
-  it('should parse floats', function() {
-    expect(fromJson("{value:2.55, name:'misko'}")).toEqual({value:2.55, name:'misko'});
-  });
-
-  it('should parse negative / possitve numbers', function() {
-    expect(fromJson("{neg:-2.55, pos:+.3, a:[-2, +.1, -.2, +.3]}")).toEqual({neg:-2.55, pos:+.3, a:[-2, +.1, -.2, +.3]});
-  });
-
-  it('should parse exponents', function() {
-    expect(fromJson("{exp:1.2E10}")).toEqual({exp:1.2E10});
-    expect(fromJson("{exp:1.2E-10}")).toEqual({exp:1.2E-10});
-    expect(fromJson("{exp:1.2e+10}")).toEqual({exp:1.2E10});
-    expect(fromJson("{exp:1.2e-10}")).toEqual({exp:1.2E-10});
-  });
-
-  it('should ignore non-strings', function() {
-    expect(fromJson([])).toEqual([]);
-    expect(fromJson({})).toEqual({});
-    expect(fromJson(null)).toEqual(null);
-    expect(fromJson(undefined)).toEqual(undefined);
-  });
-
-
-  //run these tests only in browsers that have native JSON parser
-  if (JSON && JSON.parse) {
-
-    describe('native parser', function() {
-
-      var nativeParser = JSON.parse;
-
-      afterEach(function() {
-        JSON.parse = nativeParser;
-      });
-
-
-      it('should delegate to native parser if available and boolean flag is passed', function() {
-        var spy = this.spyOn(JSON, 'parse').andCallThrough();
-
-        expect(fromJson('{}')).toEqual({});
-        expect(spy).not.toHaveBeenCalled();
-
-        expect(fromJson('{}', true)).toEqual({});
-        expect(spy).toHaveBeenCalled();
-      });
-    });
-  }
-
-
-  describe('security', function() {
-    it('should not allow naked expressions', function() {
-      expect(function() {fromJson('1+2');}).
-        toThrow(new Error("Syntax Error: Token '+' is an unexpected token at column 2 of the expression [1+2] starting at [+2]."));
-    });
-
-    it('should not allow naked expressions group', function() {
-      expect(function() {fromJson('(1+2)');}).
-        toThrow(new Error("Syntax Error: Token '(' is not valid json at column 1 of the expression [(1+2)] starting at [(1+2)]."));
-    });
-
-    it('should not allow expressions in objects', function() {
-      expect(function() {fromJson('{a:abc()}');}).
-        toThrow(new Error("Syntax Error: Token 'abc' is not valid json at column 4 of the expression [{a:abc()}] starting at [abc()}]."));
-    });
-
-    it('should not allow expressions in arrays', function() {
-      expect(function() {fromJson('[1+2]');}).
-        toThrow(new Error("Syntax Error: Token '+' is not valid json at column 3 of the expression [[1+2]] starting at [+2]]."));
-    });
-
-    it('should not allow vars', function() {
-      expect(function() {fromJson('[1, x]');}).
-        toThrow(new Error("Syntax Error: Token 'x' is not valid json at column 5 of the expression [[1, x]] starting at [x]]."));
-    });
-
-    it('should not allow dereference', function() {
-      expect(function() {fromJson('["".constructor]');}).
-        toThrow(new Error("Syntax Error: Token '.' is not valid json at column 4 of the expression [[\"\".constructor]] starting at [.constructor]]."));
-    });
-
-    it('should not allow expressions ofter valid json', function() {
-      expect(function() {fromJson('[].constructor');}).
-        toThrow(new Error("Syntax Error: Token '.' is not valid json at column 3 of the expression [[].constructor] starting at [.constructor]."));
-    });
-
-    it('should not allow object dereference', function() {
-      expect(function() {fromJson('{a:1, b: $location, c:1}');}).toThrow();
-      expect(function() {fromJson("{a:1, b:[1]['__parent__']['location'], c:1}");}).toThrow();
-    });
-
-    it('should not allow assignments', function() {
-      expect(function() {fromJson('{a:1, b:[1]=1, c:1}');}).toThrow();
-      expect(function() {fromJson('{a:1, b:=1, c:1}');}).toThrow();
-      expect(function() {fromJson('{a:1, b:x=1, c:1}');}).toThrow();
-    });
-
-  });
-
 
   describe('string', function() {
     it('should quote', function() {

test/ngScenario/FutureSpec.js

@@ -42,7 +42,7 @@ describe('angular.scenario.Future', function() {
 
   it('should parse json with fromJson', function() {
     var future = new angular.scenario.Future('test name', function(done) {
-      done(null, "{test: 'foo'}");
+      done(null, '{"test": "foo"}');
     });
     future.fromJson().execute(angular.noop);
     expect(future.value).toEqual({test: 'foo'});