ilya-biryukov updated this revision to Diff 163122.
ilya-biryukov added a comment.
- Expose getAbsolutePath in the public API
Repository:
rC Clang
https://reviews.llvm.org/D51407
Files:
include/clang/Tooling/Tooling.h
lib/Tooling/Tooling.cpp
Index: lib/Tooling/Tooling.cpp
===================================================================
--- lib/Tooling/Tooling.cpp
+++ lib/Tooling/Tooling.cpp
@@ -199,21 +199,25 @@
FileName, ToolName);
}
-std::string getAbsolutePath(StringRef File) {
+llvm::Expected<std::string> getAbsolutePath(vfs::FileSystem &FS,
+ StringRef File) {
StringRef RelativePath(File);
// FIXME: Should '.\\' be accepted on Win32?
if (RelativePath.startswith("./")) {
RelativePath = RelativePath.substr(strlen("./"));
}
SmallString<1024> AbsolutePath = RelativePath;
- std::error_code EC = llvm::sys::fs::make_absolute(AbsolutePath);
- assert(!EC);
- (void)EC;
+ if (auto EC = FS.makeAbsolute(AbsolutePath))
+ return llvm::errorCodeToError(EC);
llvm::sys::path::native(AbsolutePath);
return AbsolutePath.str();
}
+std::string getAbsolutePath(StringRef File) {
+ return llvm::cantFail(getAbsolutePath(*vfs::getRealFileSystem(), File));
+}
+
void addTargetAndModeForProgramName(std::vector<std::string> &CommandLine,
StringRef InvokedAs) {
if (!CommandLine.empty() && !InvokedAs.empty()) {
@@ -411,15 +415,6 @@
// This just needs to be some symbol in the binary.
static int StaticSymbol;
- std::string InitialDirectory;
- if (llvm::ErrorOr<std::string> CWD =
- OverlayFileSystem->getCurrentWorkingDirectory()) {
- InitialDirectory = std::move(*CWD);
- } else {
- llvm::report_fatal_error("Cannot detect current path: " +
- Twine(CWD.getError().message()));
- }
-
// First insert all absolute paths into the in-memory VFS. These are global
// for all compile commands.
if (SeenWorkingDirectories.insert("/").second)
@@ -431,9 +426,22 @@
bool ProcessingFailed = false;
bool FileSkipped = false;
+ // Compute all absolute paths before we run any actions, as those will change
+ // the working directory.
+ std::vector<std::string> AbsolutePaths;
+ AbsolutePaths.reserve(SourcePaths.size());
for (const auto &SourcePath : SourcePaths) {
- std::string File(getAbsolutePath(SourcePath));
+ auto AbsPath = getAbsolutePath(*OverlayFileSystem, SourcePath);
+ if (!AbsPath) {
+ llvm::errs() << "Skipping " << SourcePath
+ << ". Error while getting an absolute path: "
+ << llvm::toString(AbsPath.takeError()) << "\n";
+ continue;
+ }
+ AbsolutePaths.push_back(std::move(*AbsPath));
+ }
+ for (llvm::StringRef File : AbsolutePaths) {
// Currently implementations of CompilationDatabase::getCompileCommands can
// change the state of the file system (e.g. prepare generated headers), so
// this method needs to run right before we invoke the tool, as the next
@@ -498,11 +506,6 @@
llvm::errs() << "Error while processing " << File << ".\n";
ProcessingFailed = true;
}
- // Return to the initial directory to correctly resolve next file by
- // relative path.
- if (OverlayFileSystem->setCurrentWorkingDirectory(InitialDirectory.c_str()))
- llvm::report_fatal_error("Cannot chdir into \"" +
- Twine(InitialDirectory) + "\n!");
}
}
return ProcessingFailed ? 1 : (FileSkipped ? 2 : 0);
Index: include/clang/Tooling/Tooling.h
===================================================================
--- include/clang/Tooling/Tooling.h
+++ include/clang/Tooling/Tooling.h
@@ -459,6 +459,10 @@
/// \param File Either an absolute or relative path.
std::string getAbsolutePath(StringRef File);
+/// An overload of getAbsolutePath that works over the provided \p FS.
+llvm::Expected<std::string> getAbsolutePath(vfs::FileSystem &FS,
+ StringRef File);
+
/// Changes CommandLine to contain implicit flags that would have been
/// defined had the compiler driver been invoked through the path InvokedAs.
///
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