//===--- IncrementalExecutor.h - Incremental Execution ----------*- C++ -*-===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

//

// This file implements the class which performs incremental code execution.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H

#define LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H

#include "llvm/ADT/DenseMap.h"

#include "llvm/ADT/StringRef.h"

#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"

#include "llvm/ExecutionEngine/Orc/Shared/ExecutorAddress.h"

#include <memory>

namespace llvm {

class Error;

namespace orc {

class LLJIT;

class ThreadSafeContext;

} // namespace orc

} // namespace llvm

namespace clang {

struct PartialTranslationUnit;

class TargetInfo;

class IncrementalExecutor {

  using CtorDtorIterator = llvm::orc::CtorDtorIterator;

  std::unique_ptr<llvm::orc::LLJIT> Jit;

  llvm::orc::ThreadSafeContext &TSCtx;

  llvm::DenseMap<const PartialTranslationUnit *, llvm::orc::ResourceTrackerSP>

      ResourceTrackers;

public:

  enum SymbolNameKind { IRName, LinkerName };

  IncrementalExecutor(llvm::orc::ThreadSafeContext &TSC, llvm::Error &Err,

                      const clang::TargetInfo &TI);

  ~IncrementalExecutor();

  llvm::Error addModule(PartialTranslationUnit &PTU);

  llvm::Error removeModule(PartialTranslationUnit &PTU);

  llvm::Error runCtors() const;

  llvm::Error cleanUp();

  llvm::Expected<llvm::orc::ExecutorAddr>

  getSymbolAddress(llvm::StringRef Name, SymbolNameKind NameKind) const;

  llvm::orc::LLJIT &GetExecutionEngine() { return *Jit; }

};

} // end namespace clang

#endif // LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H