[PATCH] D50697: [clang-format] fix PR38557 - comments between "default" and ':' causes the case label to be treated as an identifier

[Owen Pan via Phabricator via cfe-commits]

owenpan updated this revision to Diff 160591.
owenpan added a comment.

Updated the test case.


Repository:
  rC Clang

https://reviews.llvm.org/D50697

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


Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -1145,6 +1145,22 @@
                "  break;\n"
                "}",
                Style);
+  Style.ColumnLimit = 80;
+  Style.AllowShortCaseLabelsOnASingleLine = false;
+  Style.IndentCaseLabels = true;
+  EXPECT_EQ("switch (n) {\n"
+            "  default /*comments*/:\n"
+            "    return true;\n"
+            "  case 0:\n"
+            "    return false;\n"
+            "}",
+            format("switch (n) {\n"
+                   "default/*comments*/:\n"
+                   "  return true;\n"
+                   "case 0:\n"
+                   "  return false;\n"
+                   "}",
+                   Style));
 }
 
 TEST_F(FormatTest, FormatsLabels) {
Index: lib/Format/UnwrappedLineParser.cpp
===================================================================
--- lib/Format/UnwrappedLineParser.cpp
+++ lib/Format/UnwrappedLineParser.cpp
@@ -350,7 +350,10 @@
       break;
     case tok::kw_default: {
       unsigned StoredPosition = Tokens->getPosition();
-      FormatToken *Next = Tokens->getNextToken();
+      FormatToken *Next;
+      do {
+        Next = Tokens->getNextToken();
+      } while (Next && Next->is(tok::comment));
       FormatTok = Tokens->setPosition(StoredPosition);
       if (Next && Next->isNot(tok::colon)) {
         // default not followed by ':' is not a case label; treat it like



Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -1145,6 +1145,22 @@
                "  break;\n"
                "}",
                Style);
+  Style.ColumnLimit = 80;
+  Style.AllowShortCaseLabelsOnASingleLine = false;
+  Style.IndentCaseLabels = true;
+  EXPECT_EQ("switch (n) {\n"
+            "  default /*comments*/:\n"
+            "    return true;\n"
+            "  case 0:\n"
+            "    return false;\n"
+            "}",
+            format("switch (n) {\n"
+                   "default/*comments*/:\n"
+                   "  return true;\n"
+                   "case 0:\n"
+                   "  return false;\n"
+                   "}",
+                   Style));
 }
 
 TEST_F(FormatTest, FormatsLabels) {
Index: lib/Format/UnwrappedLineParser.cpp
===================================================================
--- lib/Format/UnwrappedLineParser.cpp
+++ lib/Format/UnwrappedLineParser.cpp
@@ -350,7 +350,10 @@
       break;
     case tok::kw_default: {
       unsigned StoredPosition = Tokens->getPosition();
-      FormatToken *Next = Tokens->getNextToken();
+      FormatToken *Next;
+      do {
+        Next = Tokens->getNextToken();
+      } while (Next && Next->is(tok::comment));
       FormatTok = Tokens->setPosition(StoredPosition);
       if (Next && Next->isNot(tok::colon)) {
         // default not followed by ':' is not a case label; treat it like

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