Address code review

Author: Yui T

src/compiler/checker.ts

@@ -11925,7 +11925,8 @@ module ts {
         // GRAMMAR CHECKING
         function isReservedwordInStrictMode(node: Identifier): boolean {
             // Check that originalKeywordKind is less than LastFurtureReservedWord to see if an Identifier is a strict-mode reserved word
-            return (node.parserContextFlags & ParserContextFlags.StrictMode) && node.originalKeywordKind <= SyntaxKind.LastFutureReservedWord;
+            return (node.parserContextFlags & ParserContextFlags.StrictMode) &&
+                (node.originalKeywordKind >= SyntaxKind.FirstFutureReservedWord && node.originalKeywordKind <= SyntaxKind.LastFutureReservedWord);
         }
 
         function reportStrictModeGrammarErrorInClassDeclaration(identifier: Identifier, message: DiagnosticMessage, arg0?: any, arg1?: any, arg2?: any): boolean {
@@ -12015,16 +12016,8 @@ module ts {
                 // Walk from right to left and report a possible error at each Identifier in QualifiedName
                 // Example:
                 //      x1: public.private.package  // error at public and private
-                let qualifiedName = typeName;
-                while (qualifiedName && qualifiedName.kind === SyntaxKind.QualifiedName) {
-                    checkGrammarTypeNameInStrictMode((<QualifiedName>qualifiedName).right);
-                    qualifiedName = (<QualifiedName>qualifiedName).left;
-                }
-
-                // Report an error at the last Identifier in QualifiedName
-                // Example:
-                //      x1: public.private.package  // error at package
-                checkGrammarTypeNameInStrictMode(<Identifier>qualifiedName);
+                checkGrammarTypeNameInStrictMode((<QualifiedName>typeName).right);
+                checkGrammarTypeReferenceInStrictMode((<QualifiedName>typeName).left);
             }
         }
 
@@ -12034,27 +12027,18 @@ module ts {
         //      public                  // error at public
         //      public.private.package  // error at public
         //      B.private.B             // no error
-        function checkGrammarHeritageClauseElementInStrictMode(expression: Expression) {
+        function checkGrammarHeritageClauseElementInStrictMode(expression: PropertyAccessExpression) {
             // Example:
             //      class C extends public // error at public
             if (expression && expression.kind === SyntaxKind.Identifier) {
                 return checkGrammarIdentifierInStrictMode(expression);
             }
             else if (expression && expression.kind === SyntaxKind.PropertyAccessExpression) {
-                let propertyAccessExp = <PropertyAccessExpression>expression;
-
                 // Walk from left to right in PropertyAccessExpression until we are at the left most expression
                 // in PropertyAccessExpression. According to grammar production of MemberExpression,
                 // the left component expression is a PrimaryExpression (i.e. Identifier) while the other
                 // component after dots can be IdentifierName.
-                while (propertyAccessExp && propertyAccessExp.kind === SyntaxKind.PropertyAccessExpression) {
-                    propertyAccessExp = <PropertyAccessExpression>propertyAccessExp.expression;
-                }
-
-                // Report strict mode at the property of memberExpression
-                // Example:
-                //      public.private.package  // error at public as it is parsed as an Identifier in the PropertyAccessExpression
-                checkGrammarIdentifierInStrictMode(propertyAccessExp);
+                checkGrammarHeritageClauseElementInStrictMode(<PropertyAccessExpression>expression.expression);
             }
 
         }