Wasm.h

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//===------------------ Wasm.h - Wasm Interpreter ---------------*- 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 interpreter support for code execution in WebAssembly.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_LIB_INTERPRETER_WASM_H
#define LLVM_CLANG_LIB_INTERPRETER_WASM_H
 
#ifndef __EMSCRIPTEN__
#error "This requires emscripten."
#endif // __EMSCRIPTEN__
 
#include "clang/Interpreter/IncrementalExecutor.h"
#include "llvm/ADT/SmallString.h"
#include <string>
#include <vector>
 
namespace clang {
 
class WasmIncrementalExecutorBuilder : public IncrementalExecutorBuilder {
public:
  llvm::Error configure(IncrementalCompilerBuilder &CB,
                        const Options &Opts) override;
  bool supportsJIT() const override { return false; }
  llvm::Expected<llvm::Triple> getHostJITTriple() const override;
 
private:
  llvm::Expected<std::unique_ptr<IncrementalExecutor>>
  createExecutor(llvm::orc::ThreadSafeContext &TSC,
                 const clang::TargetInfo &TI) override;
};
 
class WasmIncrementalExecutor : public IncrementalExecutor {
public:
  WasmIncrementalExecutor(llvm::Error &Err, std::vector<std::string> LLVMArgs);
  ~WasmIncrementalExecutor() override;
 
  llvm::Error addModule(PartialTranslationUnit &PTU) override;
  llvm::Error removeModule(PartialTranslationUnit &PTU) override;
  llvm::Error runCtors() const override;
  llvm::Error cleanUp() override;
  llvm::Expected<llvm::orc::ExecutorAddr>
  getSymbolAddress(llvm::StringRef Name,
                   SymbolNameKind NameKind) const override;
  llvm::Error LoadDynamicLibrary(const char *name) override;
 
private:
  llvm::SmallString<256> TempDir;
  std::vector<std::string> StoredLLVMArgs;
};
 
} // namespace clang
 
#endif // LLVM_CLANG_LIB_INTERPRETER_WASM_H