Move ParseConditionalExpression to ParserBase.

R=mstarzinger@chromium.org
BUG=v8:3126
LOG=N

Review URL: https://codereview.chromium.org/198053002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19994 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/parser.cc

@@ -633,8 +633,9 @@ FunctionLiteral* ParserTraits::ParseFunctionLiteral(
 }
 
 
-Expression* ParserTraits::ParseConditionalExpression(bool accept_IN, bool* ok) {
-  return parser_->ParseConditionalExpression(accept_IN, ok);
+Expression* ParserTraits::ParseBinaryExpression(int prec, bool accept_IN,
+                                                bool* ok) {
+  return parser_->ParseBinaryExpression(prec, accept_IN, ok);
 }
 
 
@@ -2922,27 +2923,6 @@ Statement* Parser::ParseForStatement(ZoneStringList* labels, bool* ok) {
 }
 
 
-// Precedence = 3
-Expression* Parser::ParseConditionalExpression(bool accept_IN, bool* ok) {
-  // ConditionalExpression ::
-  //   LogicalOrExpression
-  //   LogicalOrExpression '?' AssignmentExpression ':' AssignmentExpression
-
-  int pos = peek_position();
-  // We start using the binary expression parser for prec >= 4 only!
-  Expression* expression = ParseBinaryExpression(4, accept_IN, CHECK_OK);
-  if (peek() != Token::CONDITIONAL) return expression;
-  Consume(Token::CONDITIONAL);
-  // In parsing the first assignment expression in conditional
-  // expressions we always accept the 'in' keyword; see ECMA-262,
-  // section 11.12, page 58.
-  Expression* left = ParseAssignmentExpression(true, CHECK_OK);
-  Expect(Token::COLON, CHECK_OK);
-  Expression* right = ParseAssignmentExpression(accept_IN, CHECK_OK);
-  return factory()->NewConditional(expression, left, right, pos);
-}
-
-
 // Precedence >= 4
 Expression* Parser::ParseBinaryExpression(int prec, bool accept_IN, bool* ok) {
   ASSERT(prec >= 4);

src/parser.h

@@ -561,7 +561,7 @@ class ParserTraits {
       int function_token_position,
       FunctionLiteral::FunctionType type,
       bool* ok);
-  Expression* ParseConditionalExpression(bool accept_IN, bool* ok);
+  Expression* ParseBinaryExpression(int prec, bool accept_IN, bool* ok);
 
  private:
   Parser* parser_;
@@ -704,7 +704,6 @@ class Parser : public ParserBase<ParserTraits> {
   // Support for hamony block scoped bindings.
   Block* ParseScopedBlock(ZoneStringList* labels, bool* ok);
 
-  Expression* ParseConditionalExpression(bool accept_IN, bool* ok);
   Expression* ParseBinaryExpression(int prec, bool accept_IN, bool* ok);
   Expression* ParseUnaryExpression(bool* ok);
   Expression* ParsePostfixExpression(bool* ok);

src/preparser.cc

@@ -146,9 +146,10 @@ PreParserExpression PreParserTraits::ParseFunctionLiteral(
 }
 
 
-PreParserExpression PreParserTraits::ParseConditionalExpression(bool accept_IN,
-                                                                bool* ok) {
-  return pre_parser_->ParseConditionalExpression(accept_IN, ok);
+PreParserExpression PreParserTraits::ParseBinaryExpression(int prec,
+                                                           bool accept_IN,
+                                                           bool* ok) {
+  return pre_parser_->ParseBinaryExpression(prec, accept_IN, ok);
 }
 
 
@@ -843,27 +844,6 @@ PreParser::Statement PreParser::ParseDebuggerStatement(bool* ok) {
 #undef DUMMY
 
 
-// Precedence = 3
-PreParser::Expression PreParser::ParseConditionalExpression(bool accept_IN,
-                                                            bool* ok) {
-  // ConditionalExpression ::
-  //   LogicalOrExpression
-  //   LogicalOrExpression '?' AssignmentExpression ':' AssignmentExpression
-
-  // We start using the binary expression parser for prec >= 4 only!
-  Expression expression = ParseBinaryExpression(4, accept_IN, CHECK_OK);
-  if (peek() != Token::CONDITIONAL) return expression;
-  Consume(Token::CONDITIONAL);
-  // In parsing the first assignment expression in conditional
-  // expressions we always accept the 'in' keyword; see ECMA-262,
-  // section 11.12, page 58.
-  ParseAssignmentExpression(true, CHECK_OK);
-  Expect(Token::COLON, CHECK_OK);
-  ParseAssignmentExpression(accept_IN, CHECK_OK);
-  return Expression::Default();
-}
-
-
 // Precedence >= 4
 PreParser::Expression PreParser::ParseBinaryExpression(int prec,
                                                        bool accept_IN,

src/preparser.h

@@ -388,6 +388,8 @@ class ParserBase : public Traits {
   typename Traits::Type::Expression ParseAssignmentExpression(bool accept_IN,
                                                               bool* ok);
   typename Traits::Type::Expression ParseYieldExpression(bool* ok);
+  typename Traits::Type::Expression ParseConditionalExpression(bool accept_IN,
+                                                               bool* ok);
 
   // Used to detect duplicates in object literals. Each of the values
   // kGetterProperty, kSetterProperty and kValueProperty represents
@@ -718,6 +720,13 @@ class PreParserFactory {
                                int pos) {
     return PreParserExpression::Default();
   }
+
+  PreParserExpression NewConditional(PreParserExpression condition,
+                                     PreParserExpression then_expression,
+                                     PreParserExpression else_expression,
+                                     int pos) {
+    return PreParserExpression::Default();
+  }
 };
 
 
@@ -891,7 +900,7 @@ class PreParserTraits {
       int function_token_position,
       FunctionLiteral::FunctionType type,
       bool* ok);
-  PreParserExpression ParseConditionalExpression(bool accept_IN, bool* ok);
+  PreParserExpression ParseBinaryExpression(int prec, bool accept_IN, bool* ok);
 
  private:
   PreParser* pre_parser_;
@@ -1694,6 +1703,32 @@ typename Traits::Type::Expression ParserBase<Traits>::ParseYieldExpression(
 }
 
 
+// Precedence = 3
+template <class Traits>
+typename Traits::Type::Expression
+ParserBase<Traits>::ParseConditionalExpression(bool accept_IN, bool* ok) {
+  // ConditionalExpression ::
+  //   LogicalOrExpression
+  //   LogicalOrExpression '?' AssignmentExpression ':' AssignmentExpression
+
+  int pos = peek_position();
+  // We start using the binary expression parser for prec >= 4 only!
+  typename Traits::Type::Expression expression =
+      this->ParseBinaryExpression(4, accept_IN, CHECK_OK);
+  if (peek() != Token::CONDITIONAL) return expression;
+  Consume(Token::CONDITIONAL);
+  // In parsing the first assignment expression in conditional
+  // expressions we always accept the 'in' keyword; see ECMA-262,
+  // section 11.12, page 58.
+  typename Traits::Type::Expression left =
+      ParseAssignmentExpression(true, CHECK_OK);
+  Expect(Token::COLON, CHECK_OK);
+  typename Traits::Type::Expression right =
+      ParseAssignmentExpression(accept_IN, CHECK_OK);
+  return factory()->NewConditional(expression, left, right, pos);
+}
+
+
 #undef CHECK_OK
 #undef CHECK_OK_CUSTOM