Do not break before "0" in pure virtual function declarations.

Before:
virtual void write(ELFWriter *writer, OwningPtr<FileOutputBuffer> &buffer) =
    0

After:
virtual void write(ELFWriter *writerrr,
                   OwningPtr<FileOutputBuffer> &buffer) = 0;

This addresses llvm.org/PR14815.

To implement this I introduced a line type during parsing and moved the
definition of TokenType out of the struct for increased readability.
Should have done the latter in a separate patch, but it would be hard to
pull apart now.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171724 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index fc4ce101b7..db822e7b37 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -392,6 +392,12 @@ TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
                "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
 }
 
+TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
+  verifyFormat(
+      "virtual void write(ELFWriter *writerrr,\n"
+      "                   OwningPtr<FileOutputBuffer> &buffer) = 0;");
+}
+
 TEST_F(FormatTest, BreaksOnHashWhenDirectiveIsInvalid) {
   EXPECT_EQ("#\n;", format("#;"));
   verifyFormat("#\n;\n;\n;");