ClangBackEnd: Support highlighting of alias templates

Fixes: QTCREATORBUG-24552
Change-Id: I80d2b16114234cf896173cd4104e6a5f12009f69
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/tools/clangbackend/source/tokeninfo.cpp

@@ -317,6 +317,7 @@ void TokenInfo::typeKind(const Cursor &cursor)
             m_types.mixinHighlightingTypes.push_back(HighlightingType::Namespace);
             return;
         case CXCursor_TypeAliasDecl:
+        case CXCursor_TypeAliasTemplateDecl:
             m_types.mixinHighlightingTypes.push_back(HighlightingType::TypeAlias);
             return;
         case CXCursor_TypedefDecl:

tests/unit/unittest/data/highlightingmarks.cpp

@@ -695,3 +695,7 @@ protected:
 private:
     static int privateValue;
 };
+
+template <int i, int j> struct S { };
+template <int i> using spec = S<i, 1>;
+spec<2> s;

tests/unit/unittest/tokenprocessor-test.cpp

@@ -1722,6 +1722,13 @@ TEST_F(TokenProcessor, StaticPrivateMember)
     ASSERT_THAT(container.extraInfo.accessSpecifier, ClangBackEnd::AccessSpecifier::Private);
 }
 
+TEST_F(TokenProcessor, TemplateAlias)
+{
+    const auto infos = translationUnit.tokenInfosInRange(sourceRange(701, 8));
+
+    ASSERT_THAT(infos[0], HasTwoTypes(HighlightingType::Type, HighlightingType::TypeAlias));
+}
+
 Data *TokenProcessor::d;
 
 void TokenProcessor::SetUpTestCase()

tests/unit/unittest/unittest.pro

@@ -174,12 +174,14 @@ SOURCES += \
     diagnosticset-test.cpp \
     diagnostic-test.cpp \
     fixit-test.cpp \
+    gtest-clang-printing.cpp \
     highlightingresultreporter-test.cpp \
     senddocumenttracker-test.cpp \
     skippedsourceranges-test.cpp \
     sourcelocation-test.cpp \
     sourcerange-test.cpp \
     token-test.cpp \
+    tokenprocessor-test.cpp \
     translationunitupdater-test.cpp \
     unsavedfiles-test.cpp \
     unsavedfile-test.cpp \
@@ -201,7 +203,6 @@ SOURCES += \
     clangqueryprojectfindfilter-test.cpp \
     clangquery-test.cpp \
     clangreferencescollector-test.cpp \
-    gtest-clang-printing.cpp \
     pchcreator-test.cpp \
     refactoringclientserverinprocess-test.cpp \
     refactoringclient-test.cpp \
@@ -212,8 +213,7 @@ SOURCES += \
     symbolscollector-test.cpp \
     testclangtool.cpp \
     usedmacrocollector-test.cpp \
-    builddependencycollector-test.cpp \
-    tokenprocessor-test.cpp
+    builddependencycollector-test.cpp
 
 !isEmpty(QTC_UNITTEST_BUILD_CPP_PARSER):SOURCES += refactoringengine-test.cpp
 
@@ -311,14 +311,14 @@ HEADERS += \
     clangasyncjob-base.h \
     clangcompareoperators.h \
     diagnosticcontainer-matcher.h \
+    gtest-clang-printing.h
 }
 
 !isEmpty(LIBTOOLING_LIBS) {
 HEADERS += \
-    gtest-clang-printing.h \
     mockrefactoringclient.h \
     mockrefactoringserver.h \
-    testclangtool.h \
+    testclangtool.h
 }
 
 OTHER_FILES += $$files(data/*) $$files(data/include/*)

tests/unit/unittest/unittest.qbs

@@ -323,6 +323,8 @@ CppApplication {
             "diagnosticcontainer-matcher.h",
             "diagnosticset-test.cpp",
             "fixit-test.cpp",
+            "gtest-clang-printing.cpp",
+            "gtest-clang-printing.h",
             "highlightingresultreporter-test.cpp",
             "readexporteddiagnostics-test.cpp",
             "senddocumenttracker-test.cpp",
@@ -330,6 +332,7 @@ CppApplication {
             "sourcelocation-test.cpp",
             "sourcerange-test.cpp",
             "token-test.cpp",
+            "tokenprocessor-test.cpp",
             "translationunitupdater-test.cpp",
             "unsavedfile-test.cpp",
             "unsavedfiles-test.cpp",
@@ -347,8 +350,6 @@ CppApplication {
             "clangquerygatherer-test.cpp",
             "clangqueryprojectfindfilter-test.cpp",
             "clangreferencescollector-test.cpp",
-            "gtest-clang-printing.cpp",
-            "gtest-clang-printing.h",
             "gtest-llvm-printing.cpp",
             "mockrefactoringclient.h",
             "mockrefactoringserver.h",
@@ -363,7 +364,6 @@ CppApplication {
             "symbolscollector-test.cpp",
             "testclangtool.cpp",
             "testclangtool.h",
-            "tokenprocessor-test.cpp",
             "usedmacrocollector-test.cpp",
         ]
     }