Add shim for missing window object in JavaScript context

Workaround for jshint/jshint#1038

Author: ralfstx

bundles/com.eclipsesource.jshint/src/com/eclipsesource/jshint/JSHint.java

@@ -176,9 +176,8 @@ private void load( Reader reader ) throws IOException {
       context.setOptimizationLevel( 9 );
       context.setLanguageVersion( Context.VERSION_1_5 );
       scope = context.initStandardObjects();
+      context.evaluateString( scope, createShimCode(), "shim", 1, null );
       context.evaluateReader( scope, reader, "jshint library", 1, null );
-      String code = "console = {log:function(){},error:function(){},trace:function(){}};";
-      context.evaluateString( scope, code, "fake console", 1, null );
       jshint = findJSHintFunction( scope );
     } catch( RhinoException exception ) {
       throw new IllegalArgumentException( "Could not evaluate JavaScript input", exception );
@@ -200,21 +199,6 @@ private boolean checkCode( Context context, String code ) {
     }
   }
 
-  private Function findJSHintFunction( ScriptableObject scope ) throws IllegalArgumentException {
-    Object object;
-    if( ScriptableObject.hasProperty( scope, "JSHINT" ) ) {
-      object = scope.get( "JSHINT", scope );
-    } else if( ScriptableObject.hasProperty( scope, "JSLINT" ) ) {
-      object = scope.get( "JSLINT", scope );
-    } else {
-      throw new IllegalArgumentException( "Global JSHINT or JSLINT function missing in input" );
-    }
-    if( !( object instanceof Function ) ) {
-      throw new IllegalArgumentException( "Global JSHINT or JSLINT is not a function" );
-    }
-    return (Function)object;
-  }
-
   private void handleProblems( ProblemHandler handler, Text text ) {
     NativeArray errors = (NativeArray)jshint.get( "errors", jshint );
     long length = errors.getLength();
@@ -255,6 +239,30 @@ private int fixPosition( Text text, int line, int character ) {
     return charIndex;
   }
 
+  private static String createShimCode() {
+    // Create shims to prevent problems with JSHint accessing objects that are not available in
+    // Rhino, e.g. https://github.com/jshint/jshint/issues/1038
+    return "console = {log:function(){},error:function(){},trace:function(){}};"
+         + "window = {};";
+  }
+
+  private static Function findJSHintFunction( ScriptableObject scope )
+      throws IllegalArgumentException
+  {
+    Object object;
+    if( ScriptableObject.hasProperty( scope, "JSHINT" ) ) {
+      object = scope.get( "JSHINT", scope );
+    } else if( ScriptableObject.hasProperty( scope, "JSLINT" ) ) {
+      object = scope.get( "JSLINT", scope );
+    } else {
+      throw new IllegalArgumentException( "Global JSHINT or JSLINT function missing in input" );
+    }
+    if( !( object instanceof Function ) ) {
+      throw new IllegalArgumentException( "Global JSHINT or JSLINT is not a function" );
+    }
+    return (Function)object;
+  }
+
   private static String getPropertyAsString( ScriptableObject object,
                                              String name,
                                              String defaultValue )