Improve detection for preventing certain kind of formatting patterns.

This is a better implementation of r183097. The main purpose is to
prevent certain constructs to be formatted "like a block of text".

Before:
aaaaaaaaaaaaa<
    aaaaaaaaaa, aaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>* aaaa = new aaaaaaaaaaaaa<
    aaaaaaaaaa, aaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(bbbbbbbbbbbbbbbbbbbbbbbb);
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[
    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)[
    dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];

After:
aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,
              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>* aaaa =
    new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,
                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(
        bbbbbbbbbbbbbbbbbbbbbbbb);
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[
    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] =
    (*cccccccccccccccc)[
        dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];

llvm-svn: 185687

1 files changed, 14 insertions, 0 deletions

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index ed06bacd87d..9109781091e 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -3083,6 +3083,15 @@ TEST_F(FormatTest, WrapsTemplateDeclarations) {
   verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
                "    ccccccccccccccccccccccccccccccccccccccccccccccc);");
+  verifyFormat(
+      "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
+      "              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
+      "              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n"
+      "    new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
+      "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
+      "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n"
+      "        bbbbbbbbbbbbbbbbbbbbbbbb);",
+      getLLVMStyleWithColumns(72));
 }
 
 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
@@ -3488,6 +3497,11 @@ TEST_F(FormatTest, FormatsCasts) {
 
   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n"
                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
+  verifyFormat(
+      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[\n"
+      "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] =\n"
+      "    (*cccccccccccccccc)[\n"
+      "        dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];");
 }
 
 TEST_F(FormatTest, FormatsFunctionTypes) {