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109 Commits

Author SHA1 Message Date
Ben Langmuir 97882e7b7f Pass through context for DiagHandler in VFS 
This allows the unit tests to not use global state when checking
diagnostics.

llvm-svn: 202072
 2014-02-24 20:56:37 +00:00
Ben Langmuir 090995122d Silence a warning from r201905 
Avoid a warning about reaching the end of a non-void function after a
covered switch.

llvm-svn: 201919
 2014-02-22 00:44:02 +00:00
Ben Langmuir d51ba0b39f Add a VFSFromYAML class and a parser to create it 
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
 2014-02-21 23:39:37 +00:00
Ben Langmuir c8130a74f4 Recommit virtual file system 
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
 2014-02-20 21:59:23 +00:00
Juergen Ributzka a32575e4f6 Reverting the virtual file system implementation, because it triggers an assertion 
in our internal build bots.

This reverts commits 201618, 201635, 201636, 201639, 201685, 201691, and 201696.

llvm-svn: 201755
 2014-02-20 05:24:58 +00:00
Ben Langmuir 0eb999cacb Reduce verbosity in the virtual file system using LLVM.h 
No functional change

llvm-svn: 201696
 2014-02-19 16:36:49 +00:00
Ben Langmuir 62edd0a059 Remove typo from r201618 
Fixes PR18895

llvm-svn: 201685
 2014-02-19 15:36:37 +00:00
Ben Langmuir 87ba87bc4d Add an OverlayFileSystem class 
Provides a way to merge multiple vfs::FileSystem objects into a single
filesystem.

llvm-svn: 201635
 2014-02-19 03:29:17 +00:00
Ben Langmuir 090610d37a Initial implementation of virtual file system 
This adds the minimum virtual file system support to start migrating
FileManager onto the VFS.

Originally discussed here:
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2014-February/035188.html

Differential Revision: http://llvm-reviews.chandlerc.com/D2745

llvm-svn: 201618
 2014-02-19 00:10:30 +00:00