JS: Add angular.fromJson as JSON parser

Author: asger-semmle

javascript/ql/src/semmle/javascript/JsonParsers.qll

@@ -28,7 +28,8 @@ private class PlainJsonParserCall extends JsonParserCall {
       callee = DataFlow::globalVarRef("JSON").getAPropertyRead("parse") or
       callee = DataFlow::moduleImport("parse-json") or
       callee = DataFlow::moduleImport("json-parse-better-errors") or
-      callee = DataFlow::moduleImport("json-safe-parse")
+      callee = DataFlow::moduleImport("json-safe-parse") or
+      callee = AngularJS::angular().getAPropertyRead("fromJson")
     )
   }
 

javascript/ql/test/library-tests/JsonParsers/JsonParserCalls.expected

@@ -1,3 +1,4 @@
+| angular.js:1:1:1:34 | checkJS ... input)) | OK |
 | tst.js:11:1:11:28 | checkJS ... input)) | OK |
 | tst.js:12:1:12:39 | checkJS ... input)) | OK |
 | tst.js:13:1:13:53 | checkJS ... input)) | OK |

javascript/ql/test/library-tests/JsonParsers/angular.js

@@ -0,0 +1 @@
+checkJSON(angular.fromJson(input));