forked from OSchip/llvm-project
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
//===--- CompileCommands.h - Manipulation of compile flags -------*- C++-*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_COMPILECOMMANDS_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_COMPILECOMMANDS_H
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#include "support/Threading.h"
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#include "clang/Tooling/ArgumentsAdjusters.h"
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#include "clang/Tooling/CompilationDatabase.h"
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#include "llvm/ADT/StringMap.h"
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#include <string>
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#include <vector>
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namespace clang {
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namespace clangd {
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// CommandMangler transforms compile commands from some external source
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// for use in clangd. This means:
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// - running the frontend only, stripping args regarding output files etc
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// - forcing the use of clangd's builtin headers rather than clang's
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// - resolving argv0 as cc1 expects
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// - injecting -isysroot flags on mac as the system clang does
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struct CommandMangler {
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// Absolute path to clang.
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llvm::Optional<std::string> ClangPath;
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// Directory containing builtin headers.
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llvm::Optional<std::string> ResourceDir;
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// Root for searching for standard library (passed to -isysroot).
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llvm::Optional<std::string> Sysroot;
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// A command-mangler that doesn't know anything about the system.
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// This is hermetic for unit-tests, but won't work well in production.
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static CommandMangler forTests();
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// Probe the system and build a command-mangler that knows the toolchain.
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// - try to find clang on $PATH, otherwise fake a path near clangd
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// - find the resource directory installed near clangd
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// - on mac, find clang and isysroot by querying the `xcrun` launcher
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static CommandMangler detect();
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void adjust(std::vector<std::string> &Cmd) const;
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explicit operator clang::tooling::ArgumentsAdjuster() &&;
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private:
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CommandMangler() = default;
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Memoize<llvm::StringMap<std::string>> ResolvedDrivers;
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Memoize<llvm::StringMap<std::string>> ResolvedDriversNoFollow;
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};
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} // namespace clangd
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} // namespace clang
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#endif
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