[FileSystem] Extend file system and have it use the VFS.

This patch extends the FileSystem class with a bunch of functions that
are currently implemented as methods of the FileSpec class. These
methods will be removed in future commits and replaced by calls to the
file system.

The new functions are operated in terms of the virtual file system which
was recently moved from clang into LLVM so it could be reused in lldb.
Because the VFS is stateful, we turned the FileSystem class into a
singleton.

Differential revision: https://reviews.llvm.org/D53532

llvm-svn: 345783

1 files changed, 1 insertions, 1 deletions

diff --git a/lldb/source/Core/Disassembler.cpp b/lldb/source/Core/Disassembler.cpp
index b72e210628e..413aff277a5 100644
--- a/lldb/source/Core/Disassembler.cpp
+++ b/lldb/source/Core/Disassembler.cpp
@@ -934,7 +934,7 @@ bool Instruction::TestEmulation(Stream *out_stream, const char *file_name) {
     out_stream->Printf("Instruction::TestEmulation:  Missing file_name.");
     return false;
   }
-  FILE *test_file = FileSystem::Fopen(file_name, "r");
+  FILE *test_file = FileSystem::Instance().Fopen(file_name, "r");
   if (!test_file) {
     out_stream->Printf(
         "Instruction::TestEmulation: Attempt to open test file failed.");