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  1. //===- ObjectTransformLayer.h - Run all objects through functor -*- C++ -*-===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. //
  9. // Run all objects passed in through a user supplied functor.
  10. //
  11. //===----------------------------------------------------------------------===//
  12.  
  13. #ifndef LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H
  14. #define LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H
  15.  
  16. #include "llvm/ExecutionEngine/JITSymbol.h"
  17. #include "llvm/ExecutionEngine/Orc/Layer.h"
  18. #include <algorithm>
  19. #include <memory>
  20.  
  21. namespace llvm {
  22. namespace orc {
  23.  
  24. class ObjectTransformLayer
  25.     : public RTTIExtends<ObjectTransformLayer, ObjectLayer> {
  26. public:
  27.   static char ID;
  28.  
  29.   using TransformFunction =
  30.       std::function<Expected<std::unique_ptr<MemoryBuffer>>(
  31.           std::unique_ptr<MemoryBuffer>)>;
  32.  
  33.   ObjectTransformLayer(ExecutionSession &ES, ObjectLayer &BaseLayer,
  34.                        TransformFunction Transform = TransformFunction());
  35.  
  36.   void emit(std::unique_ptr<MaterializationResponsibility> R,
  37.             std::unique_ptr<MemoryBuffer> O) override;
  38.  
  39.   void setTransform(TransformFunction Transform) {
  40.     this->Transform = std::move(Transform);
  41.   }
  42.  
  43. private:
  44.   ObjectLayer &BaseLayer;
  45.   TransformFunction Transform;
  46. };
  47.  
  48. } // end namespace orc
  49. } // end namespace llvm
  50.  
  51. #endif // LLVM_EXECUTIONENGINE_ORC_OBJECTTRANSFORMLAYER_H
  52.