ES6: Add support for method shorthand in object literals

src/preparser.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <cmath>
 
 #include "include/v8stdint.h"
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
@@ skipping 79 matching lines @@
   return PreParserExpression::StringLiteral();
 }
 
 
 PreParserExpression PreParserTraits::ParseV8Intrinsic(bool* ok) {
   return pre_parser_->ParseV8Intrinsic(ok);
 }
 
 
 PreParserExpression PreParserTraits::ParseFunctionLiteral(
-    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) {
+    PreParserIdentifier name, Scanner::Location function_name_location,
+    bool name_is_strict_reserved, 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) {
   return pre_parser_->ParseFunctionLiteral(
       name, function_name_location, name_is_strict_reserved, is_generator,
-      function_token_position, type, arity_restriction, ok);
+      is_arrow, is_concise_method, function_token_position, type,
+      arity_restriction, ok);
 }
 
 
 PreParser::PreParseResult PreParser::PreParseLazyFunction(
     StrictMode strict_mode, bool is_generator, ParserRecorder* log) {
   log_ = log;
   // Lazy functions always have trivial outer scopes (no with/catch scopes).
   PreParserScope top_scope(scope_, GLOBAL_SCOPE);
   FunctionState top_state(&function_state_, &scope_, &top_scope, NULL,
                           this->ast_value_factory());
@@ skipping 207 matching lines @@
   //   'function' Identifier '(' FormalParameterListopt ')' '{' FunctionBody '}'
   // GeneratorDeclaration ::
   //   'function' '*' Identifier '(' FormalParameterListopt ')'
   //      '{' FunctionBody '}'
   Expect(Token::FUNCTION, CHECK_OK);
   int pos = position();
   bool is_generator = allow_generators() && Check(Token::MUL);
   bool is_strict_reserved = false;
   Identifier name = ParseIdentifierOrStrictReservedWord(
       &is_strict_reserved, CHECK_OK);
-  ParseFunctionLiteral(name,
-                       scanner()->location(),
-                       is_strict_reserved,
-                       is_generator,
-                       pos,
-                       FunctionLiteral::DECLARATION,
-                       FunctionLiteral::NORMAL_ARITY,
-                       CHECK_OK);
+  ParseFunctionLiteral(
+      name, scanner()->location(), is_strict_reserved,
+      is_generator ? FunctionLiteral::kIsGenerator
+                   : FunctionLiteral::kNotGenerator,
+      FunctionLiteral::kNotArrow, FunctionLiteral::kNotConciseMethod, pos,
+      FunctionLiteral::DECLARATION, FunctionLiteral::NORMAL_ARITY, CHECK_OK);
   return Statement::FunctionDeclaration();
 }
 
 
 PreParser::Statement PreParser::ParseBlock(bool* ok) {
   // Block ::
   //   '{' Statement* '}'
 
   // Note that a Block does not introduce a new execution scope!
   // (ECMA-262, 3rd, 12.2)
@@ skipping 437 matching lines @@
 
 #undef CHECK_OK
 #define CHECK_OK  ok);                     \
   if (!*ok) return Expression::Default();  \
   ((void)0
 #define DUMMY )  // to make indentation work
 #undef DUMMY
 
 
 PreParser::Expression PreParser::ParseFunctionLiteral(
-    Identifier function_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) {
+    Identifier function_name, Scanner::Location function_name_location,
+    bool name_is_strict_reserved, 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) {
   // Function ::
   //   '(' FormalParameterList? ')' '{' FunctionBody '}'
 
   // Parse function body.
   ScopeType outer_scope_type = scope_->type();
   PreParserScope function_scope(scope_, FUNCTION_SCOPE);
   FunctionState function_state(&function_state_, &scope_, &function_scope, NULL,
                                this->ast_value_factory());
   function_state.set_is_generator(is_generator);
   //  FormalParameterList ::
@@ skipping 43 matching lines @@
   Expect(Token::LBRACE, CHECK_OK);
   if (is_lazily_parsed) {
     ParseLazyFunctionLiteralBody(CHECK_OK);
   } else {
     ParseSourceElements(Token::RBRACE, ok);
   }
   Expect(Token::RBRACE, CHECK_OK);
 
   // Validate strict mode. We can do this only after parsing the function,
   // since the function can declare itself strict.
-  if (strict_mode() == STRICT) {
+  // Concise methods use StrictFormalParameters.
+  if (strict_mode() == STRICT || is_concise_method) {
     if (function_name.IsEvalOrArguments()) {
       ReportMessageAt(function_name_location, "strict_eval_arguments");
       *ok = false;
       return Expression::Default();
     }
     if (name_is_strict_reserved) {
       ReportMessageAt(function_name_location, "unexpected_strict_reserved");
       *ok = false;
       return Expression::Default();
     }
@@ skipping 48 matching lines @@
   ParseIdentifier(kAllowEvalOrArguments, CHECK_OK);
   ParseArguments(ok);
 
   return Expression::Default();
 }
 
 #undef CHECK_OK
 
 
 } }  // v8::internal