moc: handle include directives in enums

When including files, moc inserts a MOC_INCLUDE_BEGIN and
MOC_INCLUDE_END token into the token stream. Those are already handled
in the toplevel Moc::parse function, but parseEnum lacked support so
far.

Pick-to: 5.15
Fixes: QTBUG-80578
Change-Id: I35c8fd959347d94af20090b3a505dd9e6bfaff88
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

src/tools/moc/moc.cpp

@@ -261,11 +261,21 @@ bool Moc::parseEnum(EnumDef *def)
     }
     if (!test(LBRACE))
         return false;
+    auto handleInclude = [this]() {
+        if (test(MOC_INCLUDE_BEGIN))
+            currentFilenames.push(symbol().unquotedLexem());
+        if (test(NOTOKEN)) {
+            next(MOC_INCLUDE_END);
+            currentFilenames.pop();
+        }
+    };
     do {
         if (lookup() == RBRACE) // accept trailing comma
             break;
+        handleInclude();
         next(IDENTIFIER);
         def->values += lexem();
+        handleInclude();
         skipCxxAttributes();
     } while (test(EQ) ? until(COMMA) : test(COMMA));
     next(RBRACE);

tests/auto/tools/moc/allmocs_baseline_in.json

@@ -710,6 +710,23 @@
         "inputFile": "dir-in-include-path.h",
         "outputRevision": 67
     },
+    {
+        "classes": [
+            {
+                "className": "Foo",
+                "object": true,
+                "qualifiedClassName": "Foo",
+                "superClasses": [
+                    {
+                        "access": "public",
+                        "name": "QObject"
+                    }
+                ]
+            }
+        ],
+        "inputFile": "enum_with_include.h",
+        "outputRevision": 67
+    },
     {
         "classes": [
             {

tests/auto/tools/moc/enum_inc.h

@@ -0,0 +1 @@
+parcel

tests/auto/tools/moc/enum_with_include.h

@@ -0,0 +1,39 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef ENUM_WITH_INCLUDE_H
+#define ENUM_WITH_INCLUDE_H
+#include <QtCore/QObject>
+
+class Foo : public QObject {
+    enum en {
+       #include <enum_inc.h>
+    };
+    Q_OBJECT
+};
+#endif

tests/auto/tools/moc/moc.pro

@@ -31,11 +31,13 @@ HEADERS += using-namespaces.h no-keywords.h task87883.h c-comments.h backslash-n
            related-metaobjects-name-conflict.h \
            namespace.h cxx17-namespaces.h \
            cxx-attributes.h \
+           enum_inc.h enum_with_include.h \
            moc_include.h
 
 # No platform specifics in the JSON files, so that we can compare them
 JSON_HEADERS = $$HEADERS
 JSON_HEADERS -= cxx-attributes.h
+JSON_HEADERS -= enum_inc.h
 
 if(*-g++*|*-icc*|*-clang*|*-llvm):!win32-*: HEADERS += os9-newlines.h win-newlines.h
 if(*-g++*|*-clang*): HEADERS += dollars.h