llvm/clang/tools/clang-repl/ClangRepl.cpp

//===--- tools/clang-repl/ClangRepl.cpp - clang-repl - the Clang REPL -----===//
//
// 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 a REPL tool on top of clang.
//
//===----------------------------------------------------------------------===//

#include "clang/Basic/Diagnostic.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Interpreter/CodeCompletion.h"
#include "clang/Interpreter/Interpreter.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Sema/Sema.h"

#include "llvm/ExecutionEngine/Orc/LLJIT.h"
#include "llvm/LineEditor/LineEditor.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h" // llvm_shutdown
#include "llvm/Support/Signals.h"
#include "llvm/Support/TargetSelect.h"
#include <optional>

// Disable LSan for this test.
// FIXME: Re-enable once we can assume GCC 13.2 or higher.
// https://llvm.org/github.com/llvm/llvm-project/issues/67586.
#if LLVM_ADDRESS_SANITIZER_BUILD || LLVM_HWADDRESS_SANITIZER_BUILD
#include <sanitizer/lsan_interface.h>
LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; }
#endif

static llvm::cl::opt<bool> CudaEnabled("cuda", llvm::cl::Hidden);
static llvm::cl::opt<std::string> CudaPath("cuda-path", llvm::cl::Hidden);
static llvm::cl::opt<std::string> OffloadArch("offload-arch", llvm::cl::Hidden);

static llvm::cl::list<std::string>
    ClangArgs("Xcc",
              llvm::cl::desc("Argument to pass to the CompilerInvocation"),
              llvm::cl::CommaSeparated);
static llvm::cl::opt<bool> OptHostSupportsJit("host-supports-jit",
                                              llvm::cl::Hidden);
static llvm::cl::list<std::string> OptInputs(llvm::cl::Positional,
                                             llvm::cl::desc("[code to run]"));

static void LLVMErrorHandler(void *UserData, const char *Message,
                             bool GenCrashDiag) { … }

// If we are running with -verify a reported has to be returned as unsuccess.
// This is relevant especially for the test suite.
static int checkDiagErrors(const clang::CompilerInstance *CI, bool HasError) { … }

struct ReplListCompleter { … };

std::vector<llvm::LineEditor::Completion>
ReplListCompleter::operator()(llvm::StringRef Buffer, size_t Pos) const { … }

std::vector<llvm::LineEditor::Completion>
ReplListCompleter::operator()(llvm::StringRef Buffer, size_t Pos,
                              llvm::Error &ErrRes) const { … }

llvm::ExitOnError ExitOnErr;
int main(int argc, const char **argv) { … }