ES6: Add support for method shorthand in object literals

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 2c8e405ceea9242d23417ceb632693e9105611ac..abf09622aff6bd5c93885676620330687c4c8beb 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -84,6 +84,7 @@ class ParserBase : public Traits {
         allow_natives_syntax_(false),
         allow_generators_(false),
         allow_arrow_functions_(false),
+        allow_harmony_object_literals_(false),
         zone_(zone) {}
 
   // Getters that indicate whether certain syntactical constructs are
@@ -98,6 +99,9 @@ class ParserBase : public Traits {
     return scanner()->HarmonyNumericLiterals();
   }
   bool allow_classes() const { return scanner()->HarmonyClasses(); }
+  bool allow_harmony_object_literals() const {
+    return allow_harmony_object_literals_;
+  }
 
   // Setters that determine whether certain syntactical constructs are
   // allowed to be parsed by this instance of the parser.
@@ -112,8 +116,9 @@ class ParserBase : public Traits {
   void set_allow_harmony_numeric_literals(bool allow) {
     scanner()->SetHarmonyNumericLiterals(allow);
   }
-  void set_allow_classes(bool allow) {
-    scanner()->SetHarmonyClasses(allow);
+  void set_allow_classes(bool allow) { scanner()->SetHarmonyClasses(allow); }
+  void set_allow_harmony_object_literals(bool allow) {
+    allow_harmony_object_literals_ = allow;
   }
 
  protected:
@@ -574,6 +579,7 @@ class ParserBase : public Traits {
   bool allow_natives_syntax_;
   bool allow_generators_;
   bool allow_arrow_functions_;
+  bool allow_harmony_object_literals_;
 
   typename Traits::Type::Zone* zone_;  // Only used by Parser.
 };
@@ -1049,7 +1055,9 @@ class PreParserFactory {
       FunctionLiteral::FunctionType function_type,
       FunctionLiteral::IsFunctionFlag is_function,
       FunctionLiteral::IsParenthesizedFlag is_parenthesized,
-      FunctionLiteral::KindFlag kind, int position) {
+      FunctionLiteral::IsGeneratorFlag is_generator,
+      FunctionLiteral::IsArrowFlag is_arrow,
+      FunctionLiteral::IsConciseMethodFlag is_concise_method, int position) {
     return PreParserExpression::Default();
   }
 
@@ -1324,14 +1332,13 @@ class PreParserTraits {
   // Temporary glue; these functions will move to ParserBase.
   PreParserExpression ParseV8Intrinsic(bool* ok);
   PreParserExpression ParseFunctionLiteral(
-      PreParserIdentifier name,
-      Scanner::Location function_name_location,
+      PreParserIdentifier name, Scanner::Location function_name_location,
       bool name_is_strict_reserved,
-      bool is_generator,
-      int function_token_position,
-      FunctionLiteral::FunctionType type,
-      FunctionLiteral::ArityRestriction arity_restriction,
-      bool* ok);
+      FunctionLiteral::IsGeneratorFlag is_generator,
+      FunctionLiteral::IsArrowFlag is_arrow,
+      FunctionLiteral::IsConciseMethodFlag is_concise_method,
+      int function_token_position, FunctionLiteral::FunctionType type,
+      FunctionLiteral::ArityRestriction arity_restriction, bool* ok);
 
  private:
   PreParser* pre_parser_;
@@ -1462,14 +1469,13 @@ class PreParser : public ParserBase<PreParserTraits> {
                              bool is_generator, bool* ok);
 
   Expression ParseFunctionLiteral(
-      Identifier name,
-      Scanner::Location function_name_location,
+      Identifier name, Scanner::Location function_name_location,
       bool name_is_strict_reserved,
-      bool is_generator,
-      int function_token_pos,
-      FunctionLiteral::FunctionType function_type,
-      FunctionLiteral::ArityRestriction arity_restriction,
-      bool* ok);
+      FunctionLiteral::IsGeneratorFlag is_generator,
+      FunctionLiteral::IsArrowFlag is_arrow,
+      FunctionLiteral::IsConciseMethodFlag is_concise_method,
+      int function_token_pos, FunctionLiteral::FunctionType function_type,
+      FunctionLiteral::ArityRestriction arity_restriction, bool* ok);
   void ParseLazyFunctionLiteralBody(bool* ok);
 
   bool CheckInOrOf(bool accept_OF);
@@ -1881,7 +1887,8 @@ typename ParserBase<Traits>::ObjectLiteralPropertyT ParserBase<
           &is_getter, &is_setter, CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
       if (fni_ != NULL) this->PushLiteralName(fni_, id);
 
-      if ((is_getter || is_setter) && peek() != Token::COLON) {
+      if ((is_getter || is_setter) && peek() != Token::COLON &&
+          (!allow_harmony_object_literals_ || peek() != Token::LPAREN)) {
         // Special handling of getter and setter syntax:
         // { ... , get foo() { ... }, ... , set foo(v) { ... v ... } , ... }
         // We have already read the "get" or "set" keyword.
@@ -1894,7 +1901,7 @@ typename ParserBase<Traits>::ObjectLiteralPropertyT ParserBase<
           case Token::NUMBER:
             Consume(Token::NUMBER);
             // TODO(arv): Fix issue with numeric keys. get 1.0() should be
-            // treated as if the key was '1'
+            // treated as if the key was '1'.
             // https://code.google.com/p/v8/issues/detail?id=3507
             name = this->GetSymbol(scanner_);
             break;
@@ -1910,8 +1917,9 @@ typename ParserBase<Traits>::ObjectLiteralPropertyT ParserBase<
             this->ParseFunctionLiteral(
                 name, scanner()->location(),
                 false,  // reserved words are allowed here
-                false,  // not a generator
-                RelocInfo::kNoPosition, FunctionLiteral::ANONYMOUS_EXPRESSION,
+                FunctionLiteral::kNotGenerator, FunctionLiteral::kNotArrow,
+                FunctionLiteral::kNotConciseMethod, RelocInfo::kNoPosition,
+                FunctionLiteral::ANONYMOUS_EXPRESSION,
                 is_getter ? FunctionLiteral::GETTER_ARITY
                           : FunctionLiteral::SETTER_ARITY,
                 CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
@@ -1927,9 +1935,29 @@ typename ParserBase<Traits>::ObjectLiteralPropertyT ParserBase<
   checker->CheckProperty(next, kValueProperty,
                          CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
 
-  Expect(Token::COLON, CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
-  ExpressionT value = this->ParseAssignmentExpression(
-      true, CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
+  ExpressionT value = this->EmptyExpression();
+
+  if (allow_harmony_object_literals_ && peek() == Token::LPAREN) {
+    // TODO(arv): If the FunctionBody references super we need to call
+    // MakeMethod.
+
+    // TODO(arv): Fix issue with numeric keys. 1.0() should be treated as if the
+    // key was '1'.
+    // https://code.google.com/p/v8/issues/detail?id=3507
+    IdentifierT name = this->GetSymbol(scanner());
+
+    value = this->ParseFunctionLiteral(
+        name, scanner()->location(),
+        false,  // reserved words are allowed here
+        FunctionLiteral::kNotGenerator, FunctionLiteral::kNotArrow,
+        FunctionLiteral::kIsConciseMethod, RelocInfo::kNoPosition,
+        FunctionLiteral::ANONYMOUS_EXPRESSION, FunctionLiteral::NORMAL_ARITY,
+        CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
+  } else {
+    Expect(Token::COLON, CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
+    value = this->ParseAssignmentExpression(
+        true, CHECK_OK_CUSTOM(EmptyObjectLiteralProperty));
+  }
 
   return factory()->NewObjectLiteralProperty(key, value);
 }
@@ -2428,14 +2456,13 @@ ParserBase<Traits>::ParseMemberExpression(bool* ok) {
       function_name_location = scanner()->location();
       function_type = FunctionLiteral::NAMED_EXPRESSION;
     }
-    result = this->ParseFunctionLiteral(name,
-                                        function_name_location,
-                                        is_strict_reserved_name,
-                                        is_generator,
-                                        function_token_position,
-                                        function_type,
-                                        FunctionLiteral::NORMAL_ARITY,
-                                        CHECK_OK);
+    result = this->ParseFunctionLiteral(
+        name, function_name_location, is_strict_reserved_name,
+        is_generator ? FunctionLiteral::kIsGenerator
+                     : FunctionLiteral::kNotGenerator,
+        FunctionLiteral::kNotArrow, FunctionLiteral::kNotConciseMethod,
+        function_token_position, function_type, FunctionLiteral::NORMAL_ARITY,
+        CHECK_OK);
   } else if (peek() == Token::SUPER) {
     int beg_pos = position();
     Consume(Token::SUPER);
@@ -2596,8 +2623,8 @@ typename ParserBase<Traits>::ExpressionT ParserBase<
       materialized_literal_count, expected_property_count, handler_count,
       num_parameters, FunctionLiteral::kNoDuplicateParameters,
       FunctionLiteral::ANONYMOUS_EXPRESSION, FunctionLiteral::kIsFunction,
-      FunctionLiteral::kNotParenthesized, FunctionLiteral::kArrowFunction,
-      start_pos);
+      FunctionLiteral::kNotParenthesized, FunctionLiteral::kNotGenerator,
+      FunctionLiteral::kIsArrow, FunctionLiteral::kNotConciseMethod, start_pos);
 
   function_literal->set_function_token_position(start_pos);
   function_literal->set_ast_properties(&ast_properties);