Remove whitespace at end of file.

This fixes the rest of llvm.org/PR15062.

llvm-svn: 176361

clang/lib/Format/Format.cpp

@@ -1132,7 +1132,15 @@ public:
       IndentForLevel.resize(TheLine.Level + 1);
       bool WasMoved =
           PreviousLineWasTouched && TheLine.First.FormatTok.NewlinesBefore == 0;
-      if (TheLine.Type != LT_Invalid && (WasMoved || touchesRanges(TheLine))) {
+      if (TheLine.First.is(tok::eof)) {
+        if (PreviousLineWasTouched) {
+          unsigned NewLines =
+              std::min(TheLine.First.FormatTok.NewlinesBefore, 1u);
+          Whitespaces.replaceWhitespace(TheLine.First, NewLines, /*Indent*/ 0,
+                                        /*WhitespaceStartColumn*/ 0, Style);
+        }
+      } else if (TheLine.Type != LT_Invalid &&
+                 (WasMoved || touchesRanges(TheLine))) {
         unsigned LevelIndent = getIndent(IndentForLevel, TheLine.Level);
         unsigned Indent = LevelIndent;
         if (static_cast<int>(Indent) + Offset >= 0)

clang/lib/Format/UnwrappedLineParser.cpp

@@ -138,6 +138,11 @@ bool UnwrappedLineParser::parse() {
        I != E; ++I) {
     Callback.consumeUnwrappedLine(*I);
   }
+
+  // Create line with eof token.
+  pushToken(FormatTok);
+  Callback.consumeUnwrappedLine(*Line);
+
   return Error;
 }
 
@@ -776,14 +781,14 @@ void UnwrappedLineParser::addUnwrappedLine() {
   CurrentLines->push_back(*Line);
   Line->Tokens.clear();
   if (CurrentLines == &Lines && !PreprocessorDirectives.empty()) {
-    for (std::vector<UnwrappedLine>::iterator I = PreprocessorDirectives
-             .begin(), E = PreprocessorDirectives.end();
+    for (std::vector<UnwrappedLine>::iterator
+             I = PreprocessorDirectives.begin(),
+             E = PreprocessorDirectives.end();
          I != E; ++I) {
       CurrentLines->push_back(*I);
     }
     PreprocessorDirectives.clear();
   }
-
 }
 
 bool UnwrappedLineParser::eof() const {

clang/unittests/Format/FormatTest.cpp

@@ -166,6 +166,10 @@ TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) {
 
 TEST_F(FormatTest, RemovesTrailingWhitespaceOfFormattedLine) {
   EXPECT_EQ("int a;\nint b;", format("int a; \nint b;", 0, 0, getLLVMStyle()));
+  EXPECT_EQ("int a;", format("int a;         "));
+  EXPECT_EQ("int a;\n", format("int a;  \n   \n   \n "));
+  EXPECT_EQ("int a;\nint b;    ",
+            format("int a;  \nint b;    ", 0, 0, getLLVMStyle()));
 }
 
 TEST_F(FormatTest, ReformatsMovedLines) {