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45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
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//===--- DarwinSDKInfo.cpp - SDK Information parser for darwin - ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Driver/DarwinSDKInfo.h"
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#include "llvm/Support/ErrorOr.h"
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#include "llvm/Support/JSON.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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using namespace clang::driver;
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using namespace clang;
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Expected<Optional<DarwinSDKInfo>>
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driver::parseDarwinSDKInfo(llvm::vfs::FileSystem &VFS, StringRef SDKRootPath) {
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llvm::SmallString<256> Filepath = SDKRootPath;
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llvm::sys::path::append(Filepath, "SDKSettings.json");
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llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
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VFS.getBufferForFile(Filepath);
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if (!File) {
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// If the file couldn't be read, assume it just doesn't exist.
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return None;
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}
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Expected<llvm::json::Value> Result =
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llvm::json::parse(File.get()->getBuffer());
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if (!Result)
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return Result.takeError();
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if (const auto *Obj = Result->getAsObject()) {
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auto VersionString = Obj->getString("Version");
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if (VersionString) {
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VersionTuple Version;
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if (!Version.tryParse(*VersionString))
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return DarwinSDKInfo(Version);
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}
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}
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return llvm::make_error<llvm::StringError>("invalid SDKSettings.json",
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llvm::inconvertibleErrorCode());
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}
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