From: Eric Liu <ioeric@google.com>
Date: Thu, 24 Mar 2016 11:25:28 +0000 (+0000)
Subject: Revert "Added support for different VFSs in format::getStyle."
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0589759dbfe6d07b1998e516aa7a64a907d13e76;p=clang

Revert "Added support for different VFSs in format::getStyle."

This reverts commit r264253. It is breaking the buildbot http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/2203


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264257 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Format/Format.h b/include/clang/Format/Format.h
index 650da68097..eef651e636 100644
--- a/include/clang/Format/Format.h
+++ b/include/clang/Format/Format.h
@@ -16,7 +16,6 @@
 #define LLVM_CLANG_FORMAT_FORMAT_H
 
 #include "clang/Basic/LangOptions.h"
-#include "clang/Basic/VirtualFileSystem.h"
 #include "clang/Tooling/Core/Replacement.h"
 #include "llvm/ADT/ArrayRef.h"
 #include <system_error>
@@ -833,13 +832,11 @@ extern const char *StyleOptionHelpDescription;
 /// == "file".
 /// \param[in] FallbackStyle The name of a predefined style used to fallback to
 /// in case the style can't be determined from \p StyleName.
-/// \param[in] FS The underlying file system, in which the file resides. By
-/// default, the file system is the real file system.
 ///
 /// \returns FormatStyle as specified by ``StyleName``. If no style could be
 /// determined, the default is LLVM Style (see ``getLLVMStyle()``).
 FormatStyle getStyle(StringRef StyleName, StringRef FileName,
-                     StringRef FallbackStyle, vfs::FileSystem *FS = nullptr);
+                     StringRef FallbackStyle);
 
 } // end namespace format
 } // end namespace clang
diff --git a/lib/Format/Format.cpp b/lib/Format/Format.cpp
index 6d03b62920..31dc259d4c 100644
--- a/lib/Format/Format.cpp
+++ b/lib/Format/Format.cpp
@@ -2099,10 +2099,7 @@ static FormatStyle::LanguageKind getLanguageByFileName(StringRef FileName) {
 }
 
 FormatStyle getStyle(StringRef StyleName, StringRef FileName,
-                     StringRef FallbackStyle, vfs::FileSystem *FS) {
-  if (!FS) {
-    FS = vfs::getRealFileSystem().get();
-  }
+                     StringRef FallbackStyle) {
   FormatStyle Style = getLLVMStyle();
   Style.Language = getLanguageByFileName(FileName);
   if (!getPredefinedStyle(FallbackStyle, Style.Language, &Style)) {
@@ -2133,35 +2130,28 @@ FormatStyle getStyle(StringRef StyleName, StringRef FileName,
   llvm::sys::fs::make_absolute(Path);
   for (StringRef Directory = Path; !Directory.empty();
        Directory = llvm::sys::path::parent_path(Directory)) {
-
-    auto Status = FS->status(Directory);
-    if (!Status ||
-        Status->getType() != llvm::sys::fs::file_type::directory_file) {
+    if (!llvm::sys::fs::is_directory(Directory))
       continue;
-    }
-
     SmallString<128> ConfigFile(Directory);
 
     llvm::sys::path::append(ConfigFile, ".clang-format");
     DEBUG(llvm::dbgs() << "Trying " << ConfigFile << "...\n");
+    bool IsFile = false;
     // Ignore errors from is_regular_file: we only need to know if we can read
     // the file or not.
-    Status = FS->status(ConfigFile.str());
-    bool IsFile =
-        Status && (Status->getType() == llvm::sys::fs::file_type::regular_file);
+    llvm::sys::fs::is_regular_file(Twine(ConfigFile), IsFile);
+
     if (!IsFile) {
       // Try _clang-format too, since dotfiles are not commonly used on Windows.
       ConfigFile = Directory;
       llvm::sys::path::append(ConfigFile, "_clang-format");
       DEBUG(llvm::dbgs() << "Trying " << ConfigFile << "...\n");
-      Status = FS->status(ConfigFile.str());
-      IsFile = Status &&
-               (Status->getType() == llvm::sys::fs::file_type::regular_file);
+      llvm::sys::fs::is_regular_file(Twine(ConfigFile), IsFile);
     }
 
     if (IsFile) {
       llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Text =
-          FS->getBufferForFile(ConfigFile.str());
+          llvm::MemoryBuffer::getFile(ConfigFile.c_str());
       if (std::error_code EC = Text.getError()) {
         llvm::errs() << EC.message() << "\n";
         break;
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 319f63ded5..d2ec4e645c 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -14,7 +14,6 @@
 
 #include "clang/Frontend/TextDiagnosticPrinter.h"
 #include "llvm/Support/Debug.h"
-#include "llvm/Support/MemoryBuffer.h"
 #include "gtest/gtest.h"
 
 #define DEBUG_TYPE "format-test"
@@ -11200,33 +11199,6 @@ TEST_F(FormatTest, FormatsTableGenCode) {
   verifyFormat("include \"a.td\"\ninclude \"b.td\"", Style);
 }
 
-TEST(FormatStyle, GetStyleOfFile) {
-  vfs::InMemoryFileSystem FS;
-  // Test 1: format file in the same directory.
-  ASSERT_TRUE(
-      FS.addFile("/a/.clang-format", 0,
-                 llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
-  ASSERT_TRUE(
-      FS.addFile("/a/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
-  auto Style1 = getStyle("file", "/a/.clang-format", "Google", &FS);
-  ASSERT_EQ(Style1, getLLVMStyle());
-
-  // Test 2: fallback to default.
-  ASSERT_TRUE(
-      FS.addFile("/b/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
-  auto Style2 = getStyle("file", "/b/test.cpp", "Mozilla", &FS);
-  ASSERT_EQ(Style2, getMozillaStyle());
-
-  // Test 3: format file in parent directory.
-  ASSERT_TRUE(
-      FS.addFile("/c/.clang-format", 0,
-                 llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
-  ASSERT_TRUE(FS.addFile("/c/sub/sub/sub/test.cpp", 0,
-                         llvm::MemoryBuffer::getMemBuffer("int i;")));
-  auto Style3 = getStyle("file", "/c/sub/sub/sub/test.cpp", "LLVM", &FS);
-  ASSERT_EQ(Style3, getGoogleStyle());
-}
-
 class ReplacementTest : public ::testing::Test {
 protected:
   tooling::Replacement createReplacement(SourceLocation Start, unsigned Length,