[modules] AST and parser rework.

src/ast/ast.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/ast/ast.h"
 
 #include <cmath>  // For isfinite.
 
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 838 matching lines @@
     if (stmt->IsJump()) break;
   }
 }
 
 void AstTraversalVisitor::VisitVariableDeclaration(VariableDeclaration* decl) {}
 
 void AstTraversalVisitor::VisitFunctionDeclaration(FunctionDeclaration* decl) {
   RECURSE(Visit(decl->fun()));
 }
 
-void AstTraversalVisitor::VisitImportDeclaration(ImportDeclaration* decl) {}
-
 void AstTraversalVisitor::VisitBlock(Block* stmt) {
   RECURSE(VisitStatements(stmt->statements()));
 }
 
 void AstTraversalVisitor::VisitExpressionStatement(ExpressionStatement* stmt) {
   RECURSE(Visit(stmt->expression()));
 }
 
 void AstTraversalVisitor::VisitEmptyStatement(EmptyStatement* stmt) {}
 
@@ skipping 256 matching lines @@
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && x->AsString() == y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
 }  // namespace internal
 }  // namespace v8