Blacklist arbitrary @\\w+ JSDoc tags from wrapping.

Summary:
Also limits the blacklisting to only apply when the tag is actually
followed by a parameter in curly braces.

    /** @mods {long.type.must.not.wrap} */

vs

    /** @const this is a long description that may wrap. */

Reviewers: djasper

Subscribers: klimek, krasimir, cfe-commits

Differential Revision: https://reviews.llvm.org/D30452

llvm-svn: 296467

clang/lib/Format/Format.cpp

@@ -620,8 +620,8 @@ FormatStyle getGoogleStyle(FormatStyle::LanguageKind Language) {
     GoogleStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
     GoogleStyle.AlwaysBreakBeforeMultilineStrings = false;
     GoogleStyle.BreakBeforeTernaryOperators = false;
-    GoogleStyle.CommentPragmas =
-        "(taze:|@(export|requirecss|return|returns|see|visibility)) ";
+    // taze:, and @tag followed by { for a lot of JSDoc tags.
+    GoogleStyle.CommentPragmas = "(taze:|(@[A-Za-z_0-9-]+[ \\t]*{))";
     GoogleStyle.MaxEmptyLinesToKeep = 3;
     GoogleStyle.NamespaceIndentation = FormatStyle::NI_All;
     GoogleStyle.SpacesInContainerLiterals = false;

clang/unittests/Format/FormatTestJS.cpp

@@ -1575,6 +1575,30 @@ TEST_F(FormatTestJS, JSDocAnnotations) {
                " * @export {this.is.a.long.path.to.a.Type}\n"
                " */",
                getGoogleJSStyleWithColumns(20));
+  verifyFormat("/**\n"
+               " * @mods {this.is.a.long.path.to.a.Type}\n"
+               " */",
+               "/**\n"
+               " * @mods {this.is.a.long.path.to.a.Type}\n"
+               " */",
+               getGoogleJSStyleWithColumns(20));
+  verifyFormat("/**\n"
+               " * @param {this.is.a.long.path.to.a.Type}\n"
+               " */",
+               "/**\n"
+               " * @param {this.is.a.long.path.to.a.Type}\n"
+               " */",
+               getGoogleJSStyleWithColumns(20));
+  verifyFormat(
+      "/**\n"
+      " * @param This is a\n"
+      " * long comment but\n"
+      " * no type\n"
+      " */",
+      "/**\n"
+      " * @param This is a long comment but no type\n"
+      " */",
+      getGoogleJSStyleWithColumns(20));
 }
 
 TEST_F(FormatTestJS, RequoteStringsSingle) {