CppTools: Fix completion for nested enums

Task-number: QTCREATORBUG-5456

Change-Id: I0bb4756e3cdf3c87a4c2b0fbfe6953faaa5e1c52
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

src/plugins/cpptools/cppcompletion_test.cpp

@@ -2328,7 +2328,47 @@ void CppToolsPlugin::test_completion_class_declaration_inside_function_or_block_
     QVERIFY(completions.contains(QLatin1String("m2")));
 }
 
-void CppToolsPlugin::test_completion_enum_inside_block_inside_function_QTCREATORBUG5456()
+void CppToolsPlugin::test_completion_enum_inside_function()
+{
+    const QByteArray source =
+            "void foo()\n"
+            "{\n"
+            "   enum E { val1, val2, val3 };\n"
+            "   @\n"
+            "   // padding so we get the scope right\n"
+            "}\n"
+            ;
+    CompletionTestCase test(source, "val");
+
+    const QStringList completions = test.getCompletions();
+
+    QCOMPARE(completions.size(), 3);
+    QVERIFY(completions.contains(QLatin1String("val1")));
+    QVERIFY(completions.contains(QLatin1String("val2")));
+    QVERIFY(completions.contains(QLatin1String("val3")));
+}
+
+void CppToolsPlugin::test_completion_anon_enum_inside_function()
+{
+    const QByteArray source =
+            "void foo()\n"
+            "{\n"
+            "   enum { val1, val2, val3 };\n"
+            "   @\n"
+            "   // padding so we get the scope right\n"
+            "}\n"
+            ;
+    CompletionTestCase test(source, "val");
+
+    const QStringList completions = test.getCompletions();
+
+    QCOMPARE(completions.size(), 3);
+    QVERIFY(completions.contains(QLatin1String("val1")));
+    QVERIFY(completions.contains(QLatin1String("val2")));
+    QVERIFY(completions.contains(QLatin1String("val3")));
+}
+
+void CppToolsPlugin::test_completion_enum_inside_block_inside_function_cxx11_QTCREATORBUG5456()
 {
     const QByteArray source =
             "void foo()\n"
@@ -2351,7 +2391,7 @@ void CppToolsPlugin::test_completion_enum_inside_block_inside_function_QTCREATOR
     QVERIFY(completions.contains(QLatin1String("e3")));
 }
 
-void CppToolsPlugin::test_completion_enum_inside_function_QTCREATORBUG5456()
+void CppToolsPlugin::test_completion_enum_inside_function_cxx11_QTCREATORBUG5456()
 {
     const QByteArray source =
             "void foo()\n"

src/plugins/cpptools/cppcompletionassist.cpp

@@ -1342,10 +1342,14 @@ void CppCompletionAssistProcessor::globalCompletion(CPlusPlus::Scope *currentSco
     ClassOrNamespace *currentBinding = 0;
 
     for (Scope *scope = currentScope; scope; scope = scope->enclosingScope()) {
-        if (scope->isBlock()) {
+        if (Block *block = scope->asBlock()) {
             if (ClassOrNamespace *binding = context.lookupType(scope)) {
                 for (unsigned i = 0; i < scope->memberCount(); ++i) {
                     Symbol *member = scope->memberAt(i);
+                    if (member->isEnum()) {
+                        if (ClassOrNamespace *b = binding->findBlock(block))
+                            completeNamespace(b);
+                    }
                     if (!member->name())
                         continue;
                     if (UsingNamespaceDirective *u = member->asUsingNamespaceDirective()) {

src/plugins/cpptools/cpptoolsplugin.h

@@ -163,8 +163,10 @@ private slots:
     void test_completion_namespace_alias_inside_function_or_block_QTCREATORBUG166();
     void test_completion_namespace_alias_inside_function_or_block_QTCREATORBUG166_data();
     void test_completion_class_declaration_inside_function_or_block_QTCREATORBUG3620_static_member();
-    void test_completion_enum_inside_block_inside_function_QTCREATORBUG5456();
-    void test_completion_enum_inside_function_QTCREATORBUG5456();
+    void test_completion_enum_inside_function();
+    void test_completion_anon_enum_inside_function();
+    void test_completion_enum_inside_block_inside_function_cxx11_QTCREATORBUG5456();
+    void test_completion_enum_inside_function_cxx11_QTCREATORBUG5456();
 
     void test_completion_template_parameter_defined_inside_scope_of_declaration_QTCREATORBUG9169_1();
     void test_completion_template_parameter_defined_inside_scope_of_declaration_QTCREATORBUG9169_2();