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//===--- CompileCommands.h - Manipulation of compile flags -------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_COMPILECOMMANDS_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_COMPILECOMMANDS_H
#include "clang/Tooling/ArgumentsAdjusters.h"
#include "clang/Tooling/CompilationDatabase.h"
#include <string>
#include <vector>
namespace clang {
namespace clangd {
// CommandMangler transforms compile commands from some external source
// for use in clangd. This means:
// - running the frontend only, stripping args regarding output files etc
// - forcing the use of clangd's builtin headers rather than clang's
// - resolving argv0 as cc1 expects
// - injecting -isysroot flags on mac as the system clang does
struct CommandMangler {
// Absolute path to clang.
llvm::Optional<std::string> ClangPath;
// Directory containing builtin headers.
llvm::Optional<std::string> ResourceDir;
// Root for searching for standard library (passed to -isysroot).
llvm::Optional<std::string> Sysroot;
// A command-mangler that doesn't know anything about the system.
// This is hermetic for unit-tests, but won't work well in production.
static CommandMangler forTests();
// Probe the system and build a command-mangler that knows the toolchain.
// - try to find clang on $PATH, otherwise fake a path near clangd
// - find the resource directory installed near clangd
// - on mac, find clang and isysroot by querying the `xcrun` launcher
static CommandMangler detect();
void adjust(std::vector<std::string> &Cmd) const;
explicit operator clang::tooling::ArgumentsAdjuster();
private:
CommandMangler() = default;
};
} // namespace clangd
} // namespace clang
#endif
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