Remove unused Module-related AST nodes and associated codegen

src/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_H_
 #define V8_AST_H_
 
 #include "src/v8.h"
 
 #include "src/assembler.h"
@@ skipping 24 matching lines @@
 // tree.
 
 
 // ----------------------------------------------------------------------------
 // Nodes of the abstract syntax tree. Only concrete classes are
 // enumerated here.
 
 #define DECLARATION_NODE_LIST(V) \
   V(VariableDeclaration)         \
   V(FunctionDeclaration)         \
-  V(ModuleDeclaration)           \
   V(ImportDeclaration)           \
   V(ExportDeclaration)
 
-#define MODULE_NODE_LIST(V)                     \
-  V(ModuleLiteral)                              \
-  V(ModulePath)                                 \
-  V(ModuleUrl)
-
 #define STATEMENT_NODE_LIST(V)                  \
   V(Block)                                      \
-  V(ModuleStatement)                            \
   V(ExpressionStatement)                        \
   V(EmptyStatement)                             \
   V(IfStatement)                                \
   V(ContinueStatement)                          \
   V(BreakStatement)                             \
   V(ReturnStatement)                            \
   V(WithStatement)                              \
   V(SwitchStatement)                            \
   V(DoWhileStatement)                           \
   V(WhileStatement)                             \
@@ skipping 25 matching lines @@
   V(CountOperation)             \
   V(BinaryOperation)            \
   V(CompareOperation)           \
   V(Spread)                     \
   V(ThisFunction)               \
   V(SuperReference)             \
   V(CaseClause)
 
 #define AST_NODE_LIST(V)                        \
   DECLARATION_NODE_LIST(V)                      \
-  MODULE_NODE_LIST(V)                           \
   STATEMENT_NODE_LIST(V)                        \
   EXPRESSION_NODE_LIST(V)
 
 // Forward declarations
 class AstNodeFactory;
 class AstVisitor;
 class Declaration;
 class Module;
 class BreakableStatement;
 class Expression;
@@ skipping 497 matching lines @@
         fun_(fun) {
     DCHECK(mode == VAR || mode == LET || mode == CONST);
     DCHECK(fun != NULL);
   }
 
  private:
   FunctionLiteral* fun_;
 };
 
 
-class ModuleDeclaration final : public Declaration {
- public:
-  DECLARE_NODE_TYPE(ModuleDeclaration)
-
-  Module* module() const { return module_; }
-  InitializationFlag initialization() const override {
-    return kCreatedInitialized;
-  }
-
- protected:
-  ModuleDeclaration(Zone* zone, VariableProxy* proxy, Module* module,
-                    Scope* scope, int pos)
-      : Declaration(zone, proxy, CONST, scope, pos), module_(module) {}
-
- private:
-  Module* module_;
-};
-
-
 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;
   }
@@ skipping 39 matching lines @@
       : 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 ModuleLiteral final : public Module {
- public:
-  DECLARE_NODE_TYPE(ModuleLiteral)
-
- protected:
-  ModuleLiteral(Zone* zone, Block* body, ModuleDescriptor* descriptor, int pos)
-      : Module(zone, descriptor, pos, body) {}
-};
-
-
-class ModulePath final : public Module {
- public:
-  DECLARE_NODE_TYPE(ModulePath)
-
-  Module* module() const { return module_; }
-  Handle<String> name() const { return name_->string(); }
-
- protected:
-  ModulePath(Zone* zone, Module* module, const AstRawString* name, int pos)
-      : Module(zone, pos), module_(module), name_(name) {}
-
- private:
-  Module* module_;
-  const AstRawString* name_;
-};
-
-
-class ModuleUrl final : public Module {
- public:
-  DECLARE_NODE_TYPE(ModuleUrl)
-
-  Handle<String> url() const { return url_; }
-
- protected:
-  ModuleUrl(Zone* zone, Handle<String> url, int pos)
-      : Module(zone, pos), url_(url) {
-  }
-
- private:
-  Handle<String> url_;
-};
-
-
-class ModuleStatement final : public Statement {
- public:
-  DECLARE_NODE_TYPE(ModuleStatement)
-
-  Block* body() const { return body_; }
-
- protected:
-  ModuleStatement(Zone* zone, Block* body, int pos)
-      : Statement(zone, pos), body_(body) {}
-
- private:
-  Block* body_;
-};
-
-
 class IterationStatement : public BreakableStatement {
  public:
   // Type testing & conversion.
   IterationStatement* AsIterationStatement() final { return this; }
 
   Statement* body() const { return body_; }
 
   static int num_ids() { return parent_num_ids() + 1; }
   BailoutId OsrEntryId() const { return BailoutId(local_id(0)); }
   virtual BailoutId ContinueId() const = 0;
@@ skipping 2468 matching lines @@
   }
 
   FunctionDeclaration* NewFunctionDeclaration(VariableProxy* proxy,
                                               VariableMode mode,
                                               FunctionLiteral* fun,
                                               Scope* scope,
                                               int pos) {
     return new (zone_) FunctionDeclaration(zone_, proxy, mode, fun, scope, pos);
   }
 
-  ModuleDeclaration* NewModuleDeclaration(VariableProxy* proxy,
-                                          Module* module,
-                                          Scope* scope,
-                                          int pos) {
-    return new (zone_) ModuleDeclaration(zone_, proxy, module, scope, pos);
-  }
-
   ImportDeclaration* NewImportDeclaration(VariableProxy* proxy,
                                           const AstRawString* import_name,
                                           const AstRawString* module_specifier,
                                           Scope* scope, int pos) {
     return new (zone_) ImportDeclaration(zone_, proxy, import_name,
                                          module_specifier, scope, pos);
   }
 
   ExportDeclaration* NewExportDeclaration(VariableProxy* proxy,
                                           Scope* scope,
                                           int pos) {
     return new (zone_) ExportDeclaration(zone_, proxy, scope, pos);
   }
 
-  ModuleLiteral* NewModuleLiteral(Block* body, ModuleDescriptor* descriptor,
-                                  int pos) {
-    return new (zone_) ModuleLiteral(zone_, body, descriptor, pos);
-  }
-
-  ModulePath* NewModulePath(Module* origin, const AstRawString* name, int pos) {
-    return new (zone_) ModulePath(zone_, origin, name, pos);
-  }
-
-  ModuleUrl* NewModuleUrl(Handle<String> url, int pos) {
-    return new (zone_) ModuleUrl(zone_, url, pos);
-  }
-
   Block* NewBlock(ZoneList<const AstRawString*>* labels,
                   int capacity,
                   bool is_initializer_block,
                   int pos) {
     return new (zone_)
         Block(zone_, labels, capacity, is_initializer_block, pos);
   }
 
 #define STATEMENT_WITH_LABELS(NodeType)                                     \
   NodeType* New##NodeType(ZoneList<const AstRawString*>* labels, int pos) { \
@@ skipping 13 matching lines @@
         return new (zone_) ForInStatement(zone_, labels, pos);
       }
       case ForEachStatement::ITERATE: {
         return new (zone_) ForOfStatement(zone_, labels, pos);
       }
     }
     UNREACHABLE();
     return NULL;
   }
 
-  ModuleStatement* NewModuleStatement(Block* body, int pos) {
-    return new (zone_) ModuleStatement(zone_, body, pos);
-  }
-
   ExpressionStatement* NewExpressionStatement(Expression* expression, int pos) {
     return new (zone_) ExpressionStatement(zone_, expression, pos);
   }
 
   ContinueStatement* NewContinueStatement(IterationStatement* target, int pos) {
     return new (zone_) ContinueStatement(zone_, target, pos);
   }
 
   BreakStatement* NewBreakStatement(BreakableStatement* target, int pos) {
     return new (zone_) BreakStatement(zone_, target, pos);
@@ skipping 267 matching lines @@
 
  private:
   Zone* zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_