[PATCH] Don't divide L and #x in macro definitions. Fixes http://llvm.org/PR17144

[Alexander Kornienko]

Hi djasper,

http://llvm-reviews.chandlerc.com/D1639

Files:
  lib/Format/TokenAnnotator.cpp
  unittests/Format/FormatTest.cpp

Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -1286,6 +1286,8 @@
     return false;
   if (Left.Type == TT_BlockComment && Left.TokenText.endswith("=*/"))
     return false;
+  if (Right.is(tok::hash) && Left.is(tok::identifier) && Left.TokenText == "L")
+    return false;
   return true;
 }
 
Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -1930,6 +1930,7 @@
 }
 
 TEST_F(FormatTest, HashInMacroDefinition) {
+  EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle()));
   verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
   verifyFormat("#define A  \\\n"
                "  {        \\\n"
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