[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/Interpreter/OptionValueFileSpec.cpp b/lldb/source/Interpreter/OptionValueFileSpec.cpp
index 158db98fedc..7d6ad93a290 100644
--- a/lldb/source/Interpreter/OptionValueFileSpec.cpp
+++ b/lldb/source/Interpreter/OptionValueFileSpec.cpp
@@ -109,7 +109,7 @@ size_t OptionValueFileSpec::AutoComplete(CommandInterpreter &interpreter,
 
 const lldb::DataBufferSP &OptionValueFileSpec::GetFileContents() {
   if (m_current_value) {
-    const auto file_mod_time = FileSystem::GetModificationTime(m_current_value);
+    const auto file_mod_time = FileSystem::Instance().GetModificationTime(m_current_value);
     if (m_data_sp && m_data_mod_time == file_mod_time)
       return m_data_sp;
     m_data_sp = DataBufferLLVM::CreateFromPath(m_current_value.GetPath());