FixedCompilationDatabase sets the working dir to "." by default. For
chdir(".") this is a noop but this lead to InMemoryFileSystem to create
bogus paths. Fixes PR25327.
llvm-svn: 257260
Make RedirectedFileSystem::openFilForRead(path)->status() the same as
RedirectedFileSystem::status(path). Previously we would just get the
status of the underlying real file, which would not have the IsVFSMapped
bit set.
This fixes rebuilding a module that has an include that is relative to
the includer where we will lookup the real path of that file before we
lookup the VFS location.
rdar://problem/23640339
llvm-svn: 255312
This is a more principled version of what I did earlier. Path
normalization is generally a good thing, but may break users in strange
environments, e. g. using lots of symlinks. Let the user choose and
default it to on.
This also changes adding a duplicated file into returning an error if
the file contents are different instead of an assertion failure.
Differential Revision: http://reviews.llvm.org/D13658
llvm-svn: 250060
Actually the only special path we have to handle is ./foo, the rest is
tricky to get right so do the same thing as the existing YAML vfs here.
llvm-svn: 250036
This can fail badly if we're overlaying a real file system and there are
symlinks there. Just keep the path as-is for now.
This essentially reverts r249830.
llvm-svn: 250021
Apart from being cleaner this also means that clang-format no longer has
access to the host file system. This isn't necessary because clang-format
never reads includes :)
Includes minor tweaks and bugfixes found in the VFS implementation while
running clang-format tests.
llvm-svn: 249385
For RealFileSystem this is getcwd()/chdir(), the synthetic file systems can
make up one for themselves. OverlayFileSystem now synchronizes the working
directories when a new FS is added to the overlay or the overlay working
directory is set. This allows purely artificial file systems that have zero
ties to the underlying disks.
Differential Revision: http://reviews.llvm.org/D13430
llvm-svn: 249316
This is a simple file system tree of memory buffers that can be filled by a
client. In conjunction with an OverlayFS it can be used to make virtual
files accessible right next to physical files. This can be used as a
replacement for the virtual file handling in FileManager and which I intend
to remove eventually.
llvm-svn: 249315
The patch is generated using this command:
$ tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
-checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
work/llvm/tools/clang
To reduce churn, not touching namespaces spanning less than 10 lines.
llvm-svn: 240270
For now, this is only used by its unit tests. It is similar to the API
in llvm::sys::fs::recursive_directory_iterator, but without some of the
more complex features like requesting that the iterator not recurse into
the next directory, for example.
llvm-svn: 211732
1) missing iterator bits needed by libstdc++4.7
Using find_if was convenient, but since operator++ wasn't a good
interface anyway, I just replaced with a range-based for loop and
removed operator++ from the directory_iterator class.
2) stop relying on order of iterating real files
llvm-svn: 211633
The API is based on sys::fs::directory_iterator, but it allows iterating
over overlays and the yaml-based VFS. For now, it isn't used by
anything (except its tests).
llvm-svn: 211623
When true, sets the name of the file to be the name from
'external-contents'. Otherwise, you get the virtual path that the file
was looked up by. This will not affect any non-virtual paths, or fully
virtual paths (for which there is no reasonable 'external' name anyway).
The setting is available globally, but can be overriden on a per-file
basis.
The goal is that this setting will control which path you see in debug
info, diagnostics, etc. which are sensitive to which path is used. That
will come in future patches that pass the name through to FileManager.
llvm-svn: 202329
This allows the 'name' field to contain a path, like
{ 'type': 'directory',
'name': '/path/to/dir',
'contents': [ ... ] }
which not only simplifies reading and writing these files (for humans),
but makes it possible to easily modify locations via textual
replacement, which would not have worked in the old scheme.
E.g. sed s:<ROOT>:<NEW ROOT>
llvm-svn: 202109
Provides a way to create a virtual file system using a YAML file that
supports mapping a file to a path on an 'external' file system. The
external file system will typically be the 'real' file system, but for
testing it can be changed.
A future patch will add a clang option to allow the user to specify such
a file and overlay it, but for now this code is only exercised by the
unit tests.
Differential Revision: http://llvm-reviews.chandlerc.com/D2835
llvm-svn: 201905
Previously reverted in r201755 due to causing an assertion failure.
I've removed the offending assertion, and taught the CompilerInstance to
create a default virtual file system inside createFileManager. In the
future, we should be able to reach into the CompilerInvocation to
customize this behaviour without breaking clients that don't care.
llvm-svn: 201818
Benjamin Kramer