Remove AstConstructionVisitor/AstNullVisitor

src/parser.cc

 // Copyright 2012 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 "src/v8.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
 #include "src/base/platform/platform.h"
@@ skipping 396 matching lines @@
 Expression* ParserTraits::MarkExpressionAsAssigned(Expression* expression) {
   VariableProxy* proxy =
       expression != NULL ? expression->AsVariableProxy() : NULL;
   if (proxy != NULL) proxy->set_is_assigned();
   return expression;
 }
 
 
 bool ParserTraits::ShortcutNumericLiteralBinaryExpression(
     Expression** x, Expression* y, Token::Value op, int pos,
-    AstNodeFactory<AstConstructionVisitor>* factory) {
+    AstNodeFactory* factory) {
   if ((*x)->AsLiteral() && (*x)->AsLiteral()->raw_value()->IsNumber() &&
       y->AsLiteral() && y->AsLiteral()->raw_value()->IsNumber()) {
     double x_val = (*x)->AsLiteral()->raw_value()->AsNumber();
     double y_val = y->AsLiteral()->raw_value()->AsNumber();
     switch (op) {
       case Token::ADD:
         *x = factory->NewNumberLiteral(x_val + y_val, pos);
         return true;
       case Token::SUB:
         *x = factory->NewNumberLiteral(x_val - y_val, pos);
@@ skipping 37 matching lines @@
         return true;
       }
       default:
         break;
     }
   }
   return false;
 }
 
 
-Expression* ParserTraits::BuildUnaryExpression(
-    Expression* expression, Token::Value op, int pos,
-    AstNodeFactory<AstConstructionVisitor>* factory) {
+Expression* ParserTraits::BuildUnaryExpression(Expression* expression,
+                                               Token::Value op, int pos,
+                                               AstNodeFactory* factory) {
   DCHECK(expression != NULL);
   if (expression->IsLiteral()) {
     const AstValue* literal = expression->AsLiteral()->raw_value();
     if (op == Token::NOT) {
       // Convert the literal to a boolean condition and negate it.
       bool condition = literal->BooleanValue();
       return factory->NewBooleanLiteral(!condition, pos);
     } else if (literal->IsNumber()) {
       // Compute some expressions involving only number literals.
       double value = literal->AsNumber();
@@ skipping 139 matching lines @@
       DoubleToCString(double_value, Vector<char>(array, arraysize(array)));
   return ast_value_factory()->GetOneByteString(string);
 }
 
 
 const AstRawString* ParserTraits::GetNextSymbol(Scanner* scanner) {
   return parser_->scanner()->NextSymbol(parser_->ast_value_factory());
 }
 
 
-Expression* ParserTraits::ThisExpression(
-    Scope* scope, AstNodeFactory<AstConstructionVisitor>* factory, int pos) {
+Expression* ParserTraits::ThisExpression(Scope* scope, AstNodeFactory* factory,
+                                         int pos) {
   return factory->NewVariableProxy(scope->receiver(), pos);
 }
 
-Expression* ParserTraits::SuperReference(
-    Scope* scope, AstNodeFactory<AstConstructionVisitor>* factory, int pos) {
+Expression* ParserTraits::SuperReference(Scope* scope, AstNodeFactory* factory,
+                                         int pos) {
   return factory->NewSuperReference(
       ThisExpression(scope, factory, pos)->AsVariableProxy(),
       pos);
 }
 
 Expression* ParserTraits::ClassExpression(
     const AstRawString* name, Expression* extends, Expression* constructor,
     ZoneList<ObjectLiteral::Property*>* properties, int start_position,
-    int end_position, AstNodeFactory<AstConstructionVisitor>* factory) {
+    int end_position, AstNodeFactory* factory) {
   return factory->NewClassLiteral(name, extends, constructor, properties,
                                   start_position, end_position);
 }
 
-Literal* ParserTraits::ExpressionFromLiteral(
-    Token::Value token, int pos,
-    Scanner* scanner,
-    AstNodeFactory<AstConstructionVisitor>* factory) {
+Literal* ParserTraits::ExpressionFromLiteral(Token::Value token, int pos,
+                                             Scanner* scanner,
+                                             AstNodeFactory* factory) {
   switch (token) {
     case Token::NULL_LITERAL:
       return factory->NewNullLiteral(pos);
     case Token::TRUE_LITERAL:
       return factory->NewBooleanLiteral(true, pos);
     case Token::FALSE_LITERAL:
       return factory->NewBooleanLiteral(false, pos);
     case Token::NUMBER: {
       double value = scanner->DoubleValue();
       return factory->NewNumberLiteral(value, pos);
     }
     default:
       DCHECK(false);
   }
   return NULL;
 }
 
 
-Expression* ParserTraits::ExpressionFromIdentifier(
-    const AstRawString* name, int pos, Scope* scope,
-    AstNodeFactory<AstConstructionVisitor>* factory) {
+Expression* ParserTraits::ExpressionFromIdentifier(const AstRawString* name,
+                                                   int pos, Scope* scope,
+                                                   AstNodeFactory* factory) {
   if (parser_->fni_ != NULL) parser_->fni_->PushVariableName(name);
   // The name may refer to a module instance object, so its type is unknown.
 #ifdef DEBUG
   if (FLAG_print_interface_details)
     PrintF("# Variable %.*s ", name->length(), name->raw_data());
 #endif
   Interface* interface = Interface::NewUnknown(parser_->zone());
   return scope->NewUnresolved(factory, name, interface, pos);
 }
 
 
-Expression* ParserTraits::ExpressionFromString(
-    int pos, Scanner* scanner,
-    AstNodeFactory<AstConstructionVisitor>* factory) {
+Expression* ParserTraits::ExpressionFromString(int pos, Scanner* scanner,
+                                               AstNodeFactory* factory) {
   const AstRawString* symbol = GetSymbol(scanner);
   if (parser_->fni_ != NULL) parser_->fni_->PushLiteralName(symbol);
   return factory->NewStringLiteral(symbol, pos);
 }
 
 
-Expression* ParserTraits::GetIterator(
-    Expression* iterable, AstNodeFactory<AstConstructionVisitor>* factory) {
+Expression* ParserTraits::GetIterator(Expression* iterable,
+                                      AstNodeFactory* factory) {
   Expression* iterator_symbol_literal =
       factory->NewSymbolLiteral("symbolIterator", RelocInfo::kNoPosition);
   int pos = iterable->position();
   Expression* prop =
       factory->NewProperty(iterable, iterator_symbol_literal, pos);
   Zone* zone = parser_->zone();
   ZoneList<Expression*>* args = new (zone) ZoneList<Expression*>(0, zone);
   return factory->NewCall(prop, args, pos);
 }
 
 
-Literal* ParserTraits::GetLiteralTheHole(
-    int position, AstNodeFactory<AstConstructionVisitor>* factory) {
+Literal* ParserTraits::GetLiteralTheHole(int position,
+                                         AstNodeFactory* factory) {
   return factory->NewTheHoleLiteral(RelocInfo::kNoPosition);
 }
 
 
 Expression* ParserTraits::ParseV8Intrinsic(bool* ok) {
   return parser_->ParseV8Intrinsic(ok);
 }
 
 
 FunctionLiteral* ParserTraits::ParseFunctionLiteral(
@@ skipping 143 matching lines @@
 
     // Compute the parsing mode.
     Mode mode = (FLAG_lazy && allow_lazy()) ? PARSE_LAZILY : PARSE_EAGERLY;
     if (allow_natives_syntax() || extension_ != NULL ||
         (*scope)->is_eval_scope()) {
       mode = PARSE_EAGERLY;
     }
     ParsingModeScope parsing_mode(this, mode);
 
     // Enters 'scope'.
-    AstNodeFactory<AstConstructionVisitor> function_factory(
-        ast_value_factory());
+    AstNodeFactory function_factory(ast_value_factory());
     FunctionState function_state(&function_state_, &scope_, *scope,
                                  &function_factory);
 
     scope_->SetStrictMode(info->strict_mode());
     ZoneList<Statement*>* body = new(zone()) ZoneList<Statement*>(16, zone());
     bool ok = true;
     int beg_pos = scanner()->location().beg_pos;
     ParseSourceElements(body, Token::EOS, info->is_eval(), true, eval_scope,
                         &ok);
 
@@ skipping 90 matching lines @@
 
   {
     // Parse the function literal.
     Scope* scope = NewScope(scope_, GLOBAL_SCOPE);
     info()->SetGlobalScope(scope);
     if (!info()->closure().is_null()) {
       scope = Scope::DeserializeScopeChain(info()->closure()->context(), scope,
                                            zone());
     }
     original_scope_ = scope;
-    AstNodeFactory<AstConstructionVisitor> function_factory(
-        ast_value_factory());
+    AstNodeFactory function_factory(ast_value_factory());
     FunctionState function_state(&function_state_, &scope_, scope,
                                  &function_factory);
     DCHECK(scope->strict_mode() == SLOPPY || info()->strict_mode() == STRICT);
     DCHECK(info()->strict_mode() == shared_info->strict_mode());
     scope->SetStrictMode(shared_info->strict_mode());
     FunctionLiteral::FunctionType function_type = shared_info->is_expression()
         ? (shared_info->is_anonymous()
               ? FunctionLiteral::ANONYMOUS_EXPRESSION
               : FunctionLiteral::NAMED_EXPRESSION)
         : FunctionLiteral::DECLARATION;
@@ skipping 2489 matching lines @@
   int materialized_literal_count = -1;
   int expected_property_count = -1;
   int handler_count = 0;
   FunctionLiteral::ParameterFlag duplicate_parameters =
       FunctionLiteral::kNoDuplicateParameters;
   FunctionLiteral::IsParenthesizedFlag parenthesized = parenthesized_function_
       ? FunctionLiteral::kIsParenthesized
       : FunctionLiteral::kNotParenthesized;
   // Parse function body.
   {
-    AstNodeFactory<AstConstructionVisitor> function_factory(
-        ast_value_factory());
+    AstNodeFactory function_factory(ast_value_factory());
     FunctionState function_state(&function_state_, &scope_, scope,
                                  &function_factory);
     scope_->SetScopeName(function_name);
 
     if (is_generator) {
       // For generators, allocating variables in contexts is currently a win
       // because it minimizes the work needed to suspend and resume an
       // activation.
       scope_->ForceContextAllocation();
 
@@ skipping 1436 matching lines @@
 
   // We cannot internalize on a background thread; a foreground task will take
   // care of calling Parser::Internalize just before compilation.
 
   if (compile_options() == ScriptCompiler::kProduceParserCache) {
     if (result != NULL) *info_->cached_data() = recorder.GetScriptData();
     log_ = NULL;
   }
 }
 } }  // namespace v8::internal