[modules] AST and parser rework.

src/ast/ast.h

 // 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.
 
 #ifndef V8_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
 #include "src/ast/variables.h"
@@ skipping 21 matching lines @@
 // allocation and constant-time deallocation of the entire syntax
 // tree.
 
 
 // ----------------------------------------------------------------------------
 // Nodes of the abstract syntax tree. Only concrete classes are
 // enumerated here.
 
 #define DECLARATION_NODE_LIST(V) \
   V(VariableDeclaration)         \
-  V(FunctionDeclaration)         \
-  V(ImportDeclaration)
+  V(FunctionDeclaration)
 
 #define STATEMENT_NODE_LIST(V)    \
   V(Block)                        \
   V(ExpressionStatement)          \
   V(EmptyStatement)               \
   V(SloppyBlockFunctionStatement) \
   V(IfStatement)                  \
   V(ContinueStatement)            \
   V(BreakStatement)               \
   V(ReturnStatement)              \
@@ skipping 503 matching lines @@
         fun_(fun) {
     DCHECK(mode == VAR || mode == LET || mode == CONST);
     DCHECK(fun != NULL);
   }
 
  private:
   FunctionLiteral* fun_;
 };
 
 
-class ImportDeclaration final : public Declaration {
- public:
-  DECLARE_NODE_TYPE(ImportDeclaration)
-
-  const AstRawString* import_name() const { return import_name_; }
-  const AstRawString* module_specifier() const { return module_specifier_; }
-  void set_module_specifier(const AstRawString* module_specifier) {
-    DCHECK(module_specifier_ == NULL);
-    module_specifier_ = module_specifier;
-  }
-  InitializationFlag initialization() const override {
-    return kNeedsInitialization;
-  }
-
- protected:
-  ImportDeclaration(Zone* zone, VariableProxy* proxy,
-                    const AstRawString* import_name,
-                    const AstRawString* module_specifier, Scope* scope, int pos)
-      : Declaration(zone, proxy, CONST, scope, pos),
-        import_name_(import_name),
-        module_specifier_(module_specifier) {}
-
- private:
-  const AstRawString* import_name_;
-  const AstRawString* module_specifier_;
-};
-
-
-class Module : public AstNode {
- public:
-  ModuleDescriptor* descriptor() const { return descriptor_; }
-  Block* body() const { return body_; }
-
- protected:
-  Module(Zone* zone, int pos)
-      : AstNode(pos), descriptor_(ModuleDescriptor::New(zone)), body_(NULL) {}
-  Module(Zone* zone, ModuleDescriptor* descriptor, int pos, Block* body = NULL)
-      : AstNode(pos), descriptor_(descriptor), body_(body) {}
-
- private:
-  ModuleDescriptor* descriptor_;
-  Block* body_;
-};
-
-
 class IterationStatement : public BreakableStatement {
  public:
   // Type testing & conversion.
   IterationStatement* AsIterationStatement() final { return this; }
 
   Statement* body() const { return body_; }
   void set_body(Statement* s) { body_ = s; }
 
   int yield_count() const { return yield_count_; }
   int first_yield_id() const { return first_yield_id_; }
@@ skipping 2476 matching lines @@
 
   FunctionDeclaration* NewFunctionDeclaration(VariableProxy* proxy,
                                               VariableMode mode,
                                               FunctionLiteral* fun,
                                               Scope* scope,
                                               int pos) {
     return new (parser_zone_)
         FunctionDeclaration(parser_zone_, proxy, mode, fun, scope, pos);
   }
 
-  ImportDeclaration* NewImportDeclaration(VariableProxy* proxy,
-                                          const AstRawString* import_name,
-                                          const AstRawString* module_specifier,
-                                          Scope* scope, int pos) {
-    return new (parser_zone_) ImportDeclaration(
-        parser_zone_, proxy, import_name, module_specifier, scope, pos);
-  }
-
   Block* NewBlock(ZoneList<const AstRawString*>* labels, int capacity,
                   bool ignore_completion_value, int pos) {
     return new (local_zone_)
         Block(local_zone_, labels, capacity, ignore_completion_value, pos);
   }
 
 #define STATEMENT_WITH_LABELS(NodeType)                                     \
   NodeType* New##NodeType(ZoneList<const AstRawString*>* labels, int pos) { \
     return new (local_zone_) NodeType(local_zone_, labels, pos);            \
   }
@@ skipping 441 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_