Support/FileSystem: Implement bool equivalent(file_status A, file_status B);

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146364 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 1 deletions

diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h
index 6db4554..2abbc48 100644
--- a/include/llvm/Support/FileSystem.h
+++ b/include/llvm/Support/FileSystem.h
@@ -39,6 +39,10 @@
 #include <stack>
 #include <string>
 
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
 namespace llvm {
 namespace sys {
 namespace fs {
@@ -94,7 +98,20 @@ struct space_info {
 ///               a platform specific member to store the result.
 class file_status
 {
-  // implementation defined status field.
+  #if defined(LLVM_ON_UNIX)
+  dev_t st_dev;
+  ino_t st_ino;
+  #elif defined (LLVM_ON_WIN32)
+  uint32_t LastWriteTimeHigh;
+  uint32_t LastWriteTimeLow;
+  uint32_t VolumeSerialNumber;
+  uint32_t FileSizeHigh;
+  uint32_t FileSizeLow;
+  uint32_t FileIndexHigh;
+  uint32_t FileIndexLow;
+  #endif
+  friend bool equivalent(file_status A, file_status B);
+  friend error_code status(const Twine &path, file_status &result);
   file_type Type;
 public:
   explicit file_status(file_type v=file_type::status_error)
@@ -244,6 +261,8 @@ bool equivalent(file_status A, file_status B);
 
 /// @brief Do paths represent the same thing?
 ///
+/// assert(status_known(A) || status_known(B));
+///
 /// @param A Input path A.
 /// @param B Input path B.
 /// @param result Set to true if stat(A) and stat(B) have the same device and