Improve formatting of multi-variable DeclStmts.

This fixed llvm.org/PR15670

Before:
aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,
                                    c = cccccccccccccccccccc,
                                    d = dddddddddddddddddddd;
aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,
                                     *c = ccccccccccccccccccc,
                                      *d = ddddddddddddddddddd;

After:
aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,
          c = cccccccccccccccccccc, d = dddddddddddddddddddd;
aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,
          *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;

llvm-svn: 178860

1 files changed, 12 insertions, 3 deletions

diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index d6aa6a9b7ea..101b16f1a18 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -798,9 +798,18 @@ private:
       }
     } else {
       if (Current.is(tok::equal) &&
-          (RootToken.is(tok::kw_for) || State.ParenLevel == 0)) {
-        State.Stack.back().VariablePos =
-            State.Column - Previous.FormatTok.TokenLength;
+          (RootToken.is(tok::kw_for) || State.ParenLevel == 0) &&
+          State.Stack.back().VariablePos == 0) {
+        State.Stack.back().VariablePos = State.Column;
+        // Move over * and & if they are bound to the variable name.
+        const AnnotatedToken *Tok = &Previous;
+        while (Tok &&
+               State.Stack.back().VariablePos >= Tok->FormatTok.TokenLength) {
+          State.Stack.back().VariablePos -= Tok->FormatTok.TokenLength;
+          if (Tok->SpacesRequiredBefore != 0)
+            break;
+          Tok = Tok->Parent;
+        }
         if (Previous.PartOfMultiVariableDeclStmt)
           State.Stack.back().LastSpace = State.Stack.back().VariablePos;
       }