6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
110 lines
3.7 KiB
C++
110 lines
3.7 KiB
C++
//===- Utils.h --------------------------------------------------*- 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_DWARFLINKER_UTILS_H
|
|
#define LLVM_DWARFLINKER_UTILS_H
|
|
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/Twine.h"
|
|
#include "llvm/Support/Error.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/Path.h"
|
|
|
|
namespace llvm {
|
|
namespace dwarf_linker {
|
|
|
|
/// This function calls \p Iteration() until it returns false.
|
|
/// If number of iterations exceeds \p MaxCounter then an Error is returned.
|
|
/// This function should be used for loops which assumed to have number of
|
|
/// iterations significantly smaller than \p MaxCounter to avoid infinite
|
|
/// looping in error cases.
|
|
inline Error finiteLoop(function_ref<Expected<bool>()> Iteration,
|
|
size_t MaxCounter = 100000) {
|
|
size_t iterationsCounter = 0;
|
|
while (iterationsCounter++ < MaxCounter) {
|
|
Expected<bool> IterationResultOrError = Iteration();
|
|
if (!IterationResultOrError)
|
|
return IterationResultOrError.takeError();
|
|
if (!IterationResultOrError.get())
|
|
return Error::success();
|
|
}
|
|
return createStringError(std::errc::invalid_argument, "Infinite recursion");
|
|
}
|
|
|
|
/// Make a best effort to guess the
|
|
/// Xcode.app/Contents/Developer path from an SDK path.
|
|
inline StringRef guessDeveloperDir(StringRef SysRoot) {
|
|
// Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
|
|
auto it = sys::path::rbegin(SysRoot);
|
|
auto end = sys::path::rend(SysRoot);
|
|
if (it == end || !it->ends_with(".sdk"))
|
|
return {};
|
|
++it;
|
|
// Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
|
|
if (it == end || *it != "SDKs")
|
|
return {};
|
|
auto developerEnd = it;
|
|
++it;
|
|
while (it != end) {
|
|
// Contents/Developer/Platforms/MacOSX.platform/Developer
|
|
if (*it != "Developer")
|
|
return {};
|
|
++it;
|
|
if (it == end)
|
|
return {};
|
|
if (*it == "Contents")
|
|
return StringRef(SysRoot.data(),
|
|
developerEnd - sys::path::rend(SysRoot) - 1);
|
|
// Contents/Developer/Platforms/MacOSX.platform
|
|
if (!it->ends_with(".platform"))
|
|
return {};
|
|
++it;
|
|
// Contents/Developer/Platforms
|
|
if (it == end || *it != "Platforms")
|
|
return {};
|
|
developerEnd = it;
|
|
++it;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
/// Make a best effort to determine whether Path is inside a toolchain.
|
|
inline bool isInToolchainDir(StringRef Path) {
|
|
// Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2024-05-15-a.xctoolchain/usr/lib/swift/macosx/_StringProcessing.swiftmodule/arm64-apple-macos.private.swiftinterface
|
|
for (auto it = sys::path::rbegin(Path), end = sys::path::rend(Path);
|
|
it != end; ++it) {
|
|
if (it->ends_with(".xctoolchain")) {
|
|
++it;
|
|
if (it == end)
|
|
return false;
|
|
if (*it != "Toolchains")
|
|
return false;
|
|
++it;
|
|
if (it == end)
|
|
return false;
|
|
if (*it != "Developer")
|
|
return false;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
inline bool isPathAbsoluteOnWindowsOrPosix(const Twine &Path) {
|
|
// Debug info can contain paths from any OS, not necessarily
|
|
// an OS we're currently running on. Moreover different compilation units can
|
|
// be compiled on different operating systems and linked together later.
|
|
return sys::path::is_absolute(Path, sys::path::Style::posix) ||
|
|
sys::path::is_absolute(Path, sys::path::Style::windows);
|
|
}
|
|
|
|
} // end of namespace dwarf_linker
|
|
} // end of namespace llvm
|
|
|
|
#endif // LLVM_DWARFLINKER_UTILS_H
|