DecoratorEmitter.h

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef frontend_DecoratorEmitter_h

#define frontend_DecoratorEmitter_h

#include "mozilla/Attributes.h"

#include "mozilla/Maybe.h"

#include "frontend/ParseNode.h"

#include "js/AllocPolicy.h"

#include "js/Vector.h"

namespace js::frontend {

struct BytecodeEmitter;

class MOZ_STACK_CLASS DecoratorEmitter {

 private:

  BytecodeEmitter* bce_;

 public:

  enum Kind { Method, Getter, Setter, Field, Accessor, Class };

  explicit DecoratorEmitter(BytecodeEmitter* bce);

  [[nodiscard]] bool emitApplyDecoratorsToElementDefinition(

      Kind kind, ParseNode* key, ListNode* decorators, bool isStatic);

  [[nodiscard]] bool emitApplyDecoratorsToFieldDefinition(ParseNode* key,

                                                          ListNode* decorators,

                                                          bool isStatic);

  [[nodiscard]] bool emitApplyDecoratorsToAccessorDefinition(

      ParseNode* key, ListNode* decorators, bool isStatic);

  [[nodiscard]] bool emitApplyDecoratorsToClassDefinition(ParseNode* key,

                                                          ListNode* decorators);

  [[nodiscard]] bool emitInitializeFieldOrAccessor();

  [[nodiscard]] bool emitCreateAddInitializerFunction(

      FunctionNode* addInitializerFunction, TaggedParserAtomIndex initializers);

  [[nodiscard]] bool emitCallExtraInitializers(

      TaggedParserAtomIndex extraInitializers);

 private:

  [[nodiscard]] bool emitPropertyKey(ParseNode* key);

  [[nodiscard]] bool emitDecorationState();

  [[nodiscard]] bool emitUpdateDecorationState();

  [[nodiscard]] bool emitCallDecoratorForElement(Kind kind, ParseNode* key,

                                                 bool isStatic,

                                                 ParseNode* decorator);

  [[nodiscard]] bool emitCreateDecoratorAccessObject();

  [[nodiscard]] bool emitCheckIsUndefined();

  [[nodiscard]] bool emitCreateAddInitializerFunction();

  [[nodiscard]] bool emitCreateDecoratorContextObject(Kind kind, ParseNode* key,

                                                      bool isStatic,

                                                      TokenPos pos);

  [[nodiscard]] bool emitHandleNewValueField(TaggedParserAtomIndex atom,

                                             int8_t offset);

  using DecoratorsVector = js::Vector<ParseNode*, 2, js::SystemAllocPolicy>;

  [[nodiscard]] bool reverseDecoratorsToApplicationOrder(

      const ListNode* decorators, DecoratorsVector& vec);

};

} /* namespace js::frontend */

#endif /* frontend_DecoratorEmitter_h */