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