cppcompletion_test.cpp 94.7 KB
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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
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**
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** This file is part of Qt Creator.
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**
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** 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
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** use the contact form at http://www.qt.io/contact-us.
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**
** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** following information to ensure the GNU Lesser General Public License
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** In addition, as a special exception, The Qt Company gives you certain additional
** rights.  These rights are described in The Qt Company LGPL Exception
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**
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****************************************************************************/
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#include "cppcompletionassist.h"
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#include "cppmodelmanager.h"
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#include "cpptoolsplugin.h"
#include "cpptoolstestcase.h"
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#include <texteditor/codeassist/iassistproposal.h>
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#include <texteditor/convenience.h>
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#include <texteditor/texteditor.h>
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#include <texteditor/textdocument.h>
#include <coreplugin/editormanager/editormanager.h>
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#include <utils/changeset.h>
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#include <utils/fileutils.h>

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#include <QDebug>
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#include <QDir>
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#include <QTextDocument>
#include <QtTest>
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/*!
    Tests for code completion.
 */
using namespace CPlusPlus;
using namespace CppTools;
using namespace CppTools::Internal;
using namespace TextEditor;
using namespace Core;

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namespace {

typedef QByteArray _;
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class CompletionTestCase : public Tests::TestCase
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{
public:
    CompletionTestCase(const QByteArray &sourceText, const QByteArray &textToInsert = QByteArray())
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        : m_position(-1), m_editorWidget(0), m_textDocument(0), m_editor(0)
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    {
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        QVERIFY(succeededSoFar());
        m_succeededSoFar = false;

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        m_source = sourceText;
        m_position = m_source.indexOf('@');
        QVERIFY(m_position != -1);
        m_source[m_position] = ' ';
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        // Write source to file
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        m_temporaryDir.reset(new Tests::TemporaryDir());
        QVERIFY(m_temporaryDir->isValid());
        const QString fileName = m_temporaryDir->createFile("file.h", m_source);
        QVERIFY(!fileName.isEmpty());
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        // Open in editor
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        m_editor = EditorManager::openEditor(fileName);
        QVERIFY(m_editor);
        closeEditorAtEndOfTestCase(m_editor);
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        m_editorWidget = qobject_cast<TextEditorWidget *>(m_editor->widget());
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        QVERIFY(m_editorWidget);
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        m_textDocument = m_editorWidget->document();
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        // Get Document
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        const Document::Ptr document = waitForFileInGlobalSnapshot(fileName);
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        QVERIFY(document);
        QVERIFY(document->diagnosticMessages().isEmpty());
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        m_snapshot.insert(document);
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        if (!textToInsert.isEmpty())
            insertText(textToInsert);
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        m_succeededSoFar = true;
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    }
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    QStringList getCompletions(bool *replaceAccessOperator = 0) const
    {
        QStringList completions;
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        LanguageFeatures languageFeatures = LanguageFeatures::defaultFeatures();
        languageFeatures.objCEnabled = false;
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        CppCompletionAssistInterface *ai
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            = new CppCompletionAssistInterface(m_editorWidget->textDocument()->filePath().toString(),
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                                               m_editorWidget->document(), m_position,
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                                               ExplicitlyInvoked, m_snapshot,
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                                               ProjectPart::HeaderPaths(),
                                               languageFeatures);
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        InternalCppCompletionAssistProcessor processor;
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        const Tests::IAssistProposalScopedPointer proposal(processor.perform(ai));
        if (!proposal.d)
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            return completions;
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        IAssistProposalModel *model = proposal.d->model();
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        if (!model)
            return completions;
        CppAssistProposalModel *listmodel = dynamic_cast<CppAssistProposalModel *>(model);
        if (!listmodel)
            return completions;

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        const int pos = proposal.d->basePosition();
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        const int length = m_position - pos;
        const QString prefix = Convenience::textAt(QTextCursor(m_editorWidget->document()), pos,
                                                   length);
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        if (!prefix.isEmpty())
            listmodel->filter(prefix);
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        if (listmodel->isSortable(prefix))
            listmodel->sort(prefix);
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        for (int i = 0; i < listmodel->size(); ++i)
            completions << listmodel->text(i);

        if (replaceAccessOperator)
            *replaceAccessOperator = listmodel->m_replaceDotForArrow;
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        return completions;
    }
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    void insertText(const QByteArray &text)
    {
        Utils::ChangeSet change;
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        change.insert(m_position, QLatin1String(text));
        QTextCursor cursor(m_textDocument);
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        change.apply(&cursor);
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        m_position += text.length();
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    }
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private:
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    QByteArray m_source;
    int m_position;
    Snapshot m_snapshot;
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    QScopedPointer<Tests::TemporaryDir> m_temporaryDir;
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    TextEditorWidget *m_editorWidget;
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    QTextDocument *m_textDocument;
    IEditor *m_editor;
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};
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bool isProbablyGlobalCompletion(const QStringList &list)
{
    const int numberOfPrimitivesAndBasicKeywords = (T_LAST_PRIMITIVE - T_FIRST_PRIMITIVE)
            + (T_FIRST_OBJC_AT_KEYWORD - T_FIRST_KEYWORD);

    return list.size() >= numberOfPrimitivesAndBasicKeywords
        && list.contains(QLatin1String("if"))
        && list.contains(QLatin1String("bool"));
}

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} // anonymous namespace

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void CppToolsPlugin::test_completion_basic_1()
{
    const QByteArray source =
            "class Foo\n"
            "{\n"
            "    void foo();\n"
            "    int m;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Foo f;\n"
            "    @\n"
            "}";
    CompletionTestCase test(source);
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    QVERIFY(test.succeededSoFar());
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    QStringList basicCompletions = test.getCompletions();
    QVERIFY(!basicCompletions.contains(QLatin1String("foo")));
    QVERIFY(!basicCompletions.contains(QLatin1String("m")));
    QVERIFY(basicCompletions.contains(QLatin1String("Foo")));
    QVERIFY(basicCompletions.contains(QLatin1String("func")));
    QVERIFY(basicCompletions.contains(QLatin1String("f")));

    test.insertText("f.");

    QStringList memberCompletions = test.getCompletions();
    QVERIFY(memberCompletions.contains(QLatin1String("foo")));
    QVERIFY(memberCompletions.contains(QLatin1String("m")));
    QVERIFY(!memberCompletions.contains(QLatin1String("func")));
    QVERIFY(!memberCompletions.contains(QLatin1String("f")));
}

void CppToolsPlugin::test_completion_prefix_first_QTCREATORBUG_8737()
{
    const QByteArray source =
            "void f()\n"
            "{\n"
            "    int a_b_c, a_c, a_c_a;\n"
            "    @;\n"
            "}\n"
            ;
    CompletionTestCase test(source, "a_c");
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    QVERIFY(test.succeededSoFar());
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    QStringList completions = test.getCompletions();

    QVERIFY(completions.size() >= 2);
    QCOMPARE(completions.at(0), QLatin1String("a_c"));
    QCOMPARE(completions.at(1), QLatin1String("a_c_a"));
    QVERIFY(completions.contains(QLatin1String("a_b_c")));
}

void CppToolsPlugin::test_completion_prefix_first_QTCREATORBUG_9236()
{
    const QByteArray source =
            "class r_etclass\n"
            "{\n"
            "public:\n"
            "    int raEmTmber;\n"
            "    void r_e_t(int re_t)\n"
            "    {\n"
            "        int r_et;\n"
            "        int rETUCASE;\n"
            "        @\n"
            "    }\n"
            "};\n"
            ;
    CompletionTestCase test(source, "ret");
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    QVERIFY(test.succeededSoFar());
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    QStringList completions = test.getCompletions();
    QVERIFY(completions.size() >= 2);
    QCOMPARE(completions.at(0), QLatin1String("return"));
    QCOMPARE(completions.at(1), QLatin1String("rETUCASE"));
    QVERIFY(completions.contains(QLatin1String("r_etclass")));
    QVERIFY(completions.contains(QLatin1String("raEmTmber")));
    QVERIFY(completions.contains(QLatin1String("r_e_t")));
    QVERIFY(completions.contains(QLatin1String("re_t")));
    QVERIFY(completions.contains(QLatin1String("r_et")));
}

void CppToolsPlugin::test_completion_template_function()
{
    QFETCH(QByteArray, code);
    QFETCH(QStringList, expectedCompletions);

    CompletionTestCase test(code);
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    QVERIFY(test.succeededSoFar());
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    QStringList actualCompletions = test.getCompletions();
    QString errorPattern(QLatin1String("Completion not found: %1"));
    foreach (const QString &completion, expectedCompletions) {
        QByteArray errorMessage = errorPattern.arg(completion).toUtf8();
        QVERIFY2(actualCompletions.contains(completion), errorMessage.data());
    }
}

void CppToolsPlugin::test_completion_template_function_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QStringList>("expectedCompletions");

    QByteArray code;
    QStringList completions;

    code =
           "template <class tclass, typename tname, int tint>\n"
           "tname Hello(const tclass &e)\n"
           "{\n"
           "    tname e2 = e;\n"
           "    @\n"
           "}";

    completions.append(QLatin1String("tclass"));
    completions.append(QLatin1String("tname"));
    completions.append(QLatin1String("tint"));
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    QTest::newRow("case: template parameters in template function body")
            << code << completions;

    completions.clear();

    code =
           "template <class tclass, typename tname, int tint>\n"
           "tname Hello(const tclass &e, @)\n"
           "{\n"
           "    tname e2 = e;\n"
           "}";

    completions.append(QLatin1String("tclass"));
    completions.append(QLatin1String("tname"));
    completions.append(QLatin1String("tint"));
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    QTest::newRow("case: template parameters in template function parameters list")
            << code << completions;
}

void CppToolsPlugin::test_completion()
{
    QFETCH(QByteArray, code);
    QFETCH(QByteArray, prefix);
    QFETCH(QStringList, expectedCompletions);

    CompletionTestCase test(code, prefix);
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    QVERIFY(test.succeededSoFar());
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    QStringList actualCompletions = test.getCompletions();
    actualCompletions.sort();
    expectedCompletions.sort();

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    QEXPECT_FAIL("template_as_base: explicit typedef from base", "QTCREATORBUG-14218", Abort);
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    QEXPECT_FAIL("enum_in_function_in_struct_in_function", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_function_in_struct_in_function_cxx11", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_function_in_struct_in_function_anon", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_class_accessed_in_member_func_cxx11", "QTCREATORBUG-13757", Abort);
    QEXPECT_FAIL("enum_in_class_accessed_in_member_func_inline_cxx11", "QTCREATORBUG-13757", Abort);
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    QEXPECT_FAIL("pointer_indirect_specialization", "QTCREATORBUG-14141", Abort);
    QEXPECT_FAIL("pointer_indirect_specialization_typedef", "QTCREATORBUG-14141", Abort);
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    QEXPECT_FAIL("pointer_indirect_specialization_double_indirection", "QTCREATORBUG-14141", Abort);
    QEXPECT_FAIL("pointer_indirect_specialization_double_indirection_with_base", "QTCREATORBUG-14141", Abort);
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    QCOMPARE(actualCompletions, expectedCompletions);
}

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void CppToolsPlugin::test_global_completion_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QByteArray>("prefix");

    // Check that special completion after '&' for Qt5 signal/slots does not
    // interfere global completion after '&'
    QTest::newRow("global completion after & in return expression")
         << _("void f() { foo(myObject, @); }\n")
         << _("&");
    QTest::newRow("global completion after & in function argument")
         << _("int f() { return @; }\n")
         << _("&");
}

void CppToolsPlugin::test_global_completion()
{
    QFETCH(QByteArray, code);
    QFETCH(QByteArray, prefix);

    CompletionTestCase test(code, prefix);
    QVERIFY(test.succeededSoFar());
    QVERIFY(isProbablyGlobalCompletion(test.getCompletions()));
}

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static void enumTestCase(const QByteArray &tag, const QByteArray &source,
                         const QByteArray &prefix = QByteArray())
{
    QByteArray fullSource = source;
    fullSource.replace('$', "enum E { val1, val2, val3 };");
    QTest::newRow(tag) << fullSource << (prefix + "val")
            << (QStringList()
                << QLatin1String("val1")
                << QLatin1String("val2")
                << QLatin1String("val3"));

    QTest::newRow(tag + "_cxx11") << fullSource << (prefix + "E::")
            << (QStringList()
                << QLatin1String("E")
                << QLatin1String("val1")
                << QLatin1String("val2")
                << QLatin1String("val3"));

    fullSource.replace("enum E ", "enum ");
    QTest::newRow(tag + "_anon") << fullSource << (prefix + "val")
            << (QStringList()
                << QLatin1String("val1")
                << QLatin1String("val2")
                << QLatin1String("val3"));
}

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void CppToolsPlugin::test_completion_data()
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{
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    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QByteArray>("prefix");
    QTest::addColumn<QStringList>("expectedCompletions");

    QTest::newRow("forward_declarations_present") << _(
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            "class Foo\n"
            "{\n"
            "    struct Bar;\n"
            "    int i;\n"
            "};\n"
            "\n"
            "struct Foo::Bar \n"
            "{\n"
            "    Bar() {}\n"
            "};\n"
            "\n"
            "@\n"
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        ) << _("Foo::Bar::") << (QStringList()
            << QLatin1String("Bar"));
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    QTest::newRow("inside_parentheses_c_style_conversion") << _(
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            "class Base\n"
            "{\n"
            "    int i_base;\n"
            "};\n"
            "\n"
            "class Derived : public Base\n"
            "{\n"
            "    int i_derived;\n"
            "};\n"
            "\n"
            "void fun()\n"
            "{\n"
            "    Base *b = new Derived;\n"
            "    if (1)\n"
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            "        @;\n"
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            "}\n"
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        ) << _("((Derived *)b)->") << (QStringList()
            << QLatin1String("Derived")
            << QLatin1String("Base")
            << QLatin1String("i_derived")
            << QLatin1String("i_base"));
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    QTest::newRow("inside_parentheses_cast_operator_conversion") << _(
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            "class Base\n"
            "{\n"
            "    int i_base;\n"
            "};\n"
            "\n"
            "class Derived : public Base\n"
            "{\n"
            "    int i_derived;\n"
            "};\n"
            "\n"
            "void fun()\n"
            "{\n"
            "    Base *b = new Derived;\n"
            "    if (1)\n"
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            "        @;\n"
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            "}\n"
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        ) << _("(static_cast<Derived *>(b))->") << (QStringList()
            << QLatin1String("Derived")
            << QLatin1String("Base")
            << QLatin1String("i_derived")
            << QLatin1String("i_base"));
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    QTest::newRow("template_1") << _(
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            "template <class T>\n"
            "class Foo\n"
            "{\n"
            "    typedef T Type;\n"
            "    T foo();\n"
            "    T m;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Foo f;\n"
            "    @\n"
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            "}"
        ) << _("Foo::") << (QStringList()
              << QLatin1String("Foo")
              << QLatin1String("Type")
              << QLatin1String("foo")
              << QLatin1String("m"));
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    QTest::newRow("template_2") << _(
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            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    T &at(int);\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    List<Tupple> l;\n"
            "    @\n"
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            "}"
        ) << _("l.at(0).") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));
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    QTest::newRow("template_3") << _(
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            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    T t;\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    List<Tupple> l;\n"
            "    @\n"
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            "}"
        ) << _("l.t.") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));
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    QTest::newRow("template_4") << _(
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            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    typedef T U;\n"
            "    U u;\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    List<Tupple> l;\n"
            "    @\n"
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            "}"
        ) << _("l.u.") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));
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    QTest::newRow("template_5") << _(
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            "template <class T>\n"
            "struct List\n"
            "{\n"
            "    T u;\n"
            "};\n"
            "\n"
            "struct Tupple { int a; int b; };\n"
            "\n"
            "void func() {\n"
            "    typedef List<Tupple> LT;\n"
            "    LT l;"
            "    @\n"
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            "}"
        ) << _("l.u.") << (QStringList()
            << QLatin1String("Tupple")
            << QLatin1String("a")
            << QLatin1String("b"));
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    QTest::newRow("template_6") << _(
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            "class Item\n"
            "{\n"
            "    int i;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "class Container\n"
            "{\n"
            "    T get();\n"
            "};\n"
            "\n"
            "template <typename T> class Container;\n"
            "\n"
            "class ItemContainer: public Container<Item>\n"
            "{};\n"
            "ItemContainer container;\n"
            "@\n"
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        ) << _("container.get().") << (QStringList()
            << QLatin1String("Item")
            << QLatin1String("i"));
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    QTest::newRow("template_7") << _(
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            "struct Test\n"
            "{\n"
            "   int i;\n"
            "};\n"
            "\n"
            "template<typename T>\n"
            "struct TemplateClass\n"
            "{\n"
            "    T* ptr;\n"
            "\n"
            "    typedef T element_type;\n"
            "    TemplateClass(T* t) : ptr(t) {}\n"
            "    element_type* operator->()\n"
            "    {\n"
            "        return ptr;\n"
            "    }\n"
            "};\n"
            "\n"
            "TemplateClass<Test> p(new Test);\n"
            "@\n"
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        ) << _("p->") << (QStringList()
            << QLatin1String("Test")
            << QLatin1String("i"));
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    QTest::newRow("type_of_pointer_is_typedef") << _(
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            "typedef struct Foo\n"
            "{\n"
            "    int foo;\n"
            "} Foo;\n"
            "Foo *bar;\n"
            "@\n"
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        ) << _("bar->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo"));
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    QTest::newRow("instantiate_full_specialization") << _(
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            "template<typename T>\n"
            "struct Template\n"
            "{\n"
            "   int templateT_i;\n"
            "};\n"
            "\n"
            "template<>\n"
            "struct Template<char>\n"
            "{\n"
            "    int templateChar_i;\n"
            "};\n"
            "\n"
            "Template<char> templateChar;\n"
            "@\n"
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        ) << _("templateChar.") << (QStringList()
            << QLatin1String("Template")
            << QLatin1String("templateChar_i"));
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    QTest::newRow("template_as_base: base as template directly") << _(
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            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "\n"
            "void func() {\n"
            "    Other<Data> c;\n"
            "    @\n"
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            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember"));
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    QTest::newRow("template_as_base: base as class template") << _(
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            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "template <class T> class More : public Other<T> { int moreMember; };\n"
            "\n"
            "void func() {\n"
            "    More<Data> c;\n"
            "    @\n"
651 652 653 654 655 656 657 658 659 660
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as globally qualified class template") << _(
661 662 663 664 665 666 667
            "class Data { int dataMember; };\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "template <class T> class More : public ::Other<T> { int moreMember; };\n"
            "\n"
            "void func() {\n"
            "    More<Data> c;\n"
            "    @\n"
668 669 670 671 672 673 674 675 676 677
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as namespace qualified class template") << _(
678 679 680 681 682 683 684 685 686
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "}\n"
            "template <class T> class More : public NS::Other<T> { int moreMember; };\n"
            "\n"
            "void func() {\n"
            "    More<Data> c;\n"
            "    @\n"
687 688 689 690 691 692 693 694 695 696
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as nested template name") << _(
697 698 699 700 701 702 703 704 705
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Delegate { typedef Data<T> Type; };\n"
            "}\n"
            "template <class T> class Final : public NS::Delegate<T>::Type { int finalMember; };\n"
            "\n"
            "void func() {\n"
            "    Final<Data> c;\n"
            "    @\n"
706 707 708 709 710 711
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember"));
712

713
    QTest::newRow("template_as_base: base as nested template name in non-template") << _(
714 715 716 717 718 719 720 721 722
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Delegate { typedef Data<T> Type; };\n"
            "}\n"
            "class Final : public NS::Delegate<Data>::Type { int finalMember; };\n"
            "\n"
            "void func() {\n"
            "    Final c;\n"
            "    @\n"
723 724 725 726 727 728
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember"));
729

730
    QTest::newRow("template_as_base: base as template name in non-template") << _(
731 732 733 734 735 736 737 738 739
            "class Data { int dataMember; };\n"
            "namespace NS {\n"
            "template <class T> class Other : public T { int otherMember; };\n"
            "}\n"
            "class Final : public NS::Other<Data> { int finalMember; };\n"
            "\n"
            "void func() {\n"
            "    Final c;\n"
            "    @\n"
740 741 742 743 744 745 746 747 748
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember"));

749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776
    QTest::newRow("template_as_base: typedef not available in derived") << _(
            "class Data { int dataMember; };\n"
            "template <class T> struct Base { typedef T F; };\n"
            "template <class T> struct Derived : Base<T> { F f; };\n"
            "\n"
            "void func() {\n"
            "    Derived<Data> d;\n"
            "    @\n"
            "}\n"
        ) << _("d.f.") << QStringList();

    QTest::newRow("template_as_base: explicit typedef from base") << _(
            "class Data { int dataMember; };\n"
            "template <class T> struct Base { typedef T F; };\n"
            "template <class T> struct Derived : Base<T>\n"
            "{\n"
            "   typedef typename Base<T>::F F;\n"
            "   F f;\n"
            "};\n"
            "\n"
            "void func() {\n"
            "    Derived<Data> d;\n"
            "    @\n"
            "}\n"
        ) << _("d.f.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember"));

777
    QTest::newRow("use_global_identifier_as_base_class: derived as global and base as global") << _(
778 779 780 781 782 783 784 785 786 787 788
            "struct Global\n"
            "{\n"
            "    int int_global;\n"
            "};\n"
            "\n"
            "struct Final : ::Global\n"
            "{\n"
            "   int int_final;\n"
            "};\n"
            "\n"
            "Final c;\n"
789 790 791 792 793 794 795
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));

796
    QTest::newRow("use_global_identifier_as_base_class: derived is inside namespace. "
797
                  "base as global") << _(
798 799 800 801 802 803 804 805 806 807 808 809 810 811
            "struct Global\n"
            "{\n"
            "    int int_global;\n"
            "};\n"
            "\n"
            "namespace NS\n"
            "{\n"
            "struct Final : ::Global\n"
            "{\n"
            "   int int_final;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::Final c;\n"
812 813 814 815 816 817
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));
818

819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841
    QTest::newRow("use_global_identifier_as_base_class: derived is enclosed by template. "
                  "base as global") << _(
            "struct Global\n"
            "{\n"
            "    int int_global;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "struct Final : ::Global\n"
            "{\n"
            "   int int_final;\n"
            "};\n"
            "};\n"
            "\n"
            "Enclosing<int>::Final c;\n"
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));
842

843
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class") << _(
844 845 846 847 848 849
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A c;\n"
850 851 852 853
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
854

855 856
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is in namespace") << _(
857 858 859 860 861 862 863 864 865
            "namespace NS\n"
            "{\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
866 867 868 869
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
870

871 872
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is in namespace. use scope operator for base class") << _(
873 874 875 876 877 878 879 880 881
            "namespace NS\n"
            "{\n"
            "struct A : NS::A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
882 883 884 885
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
886

887 888
    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived but in different namespace") << _(
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904
            "namespace NS1\n"
            "{\n"
            "struct A\n"
            "{\n"
            "   int int_ns1_a;\n"
            "};\n"
            "}\n"
            "namespace NS2\n"
            "{\n"
            "struct A : NS1::A\n"
            "{\n"
            "   int int_ns2_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS2::A c;\n"
905 906 907 908 909
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_ns1_a")
            << QLatin1String("int_ns2_a")
            << QLatin1String("A"));
910

911 912
    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived (in namespace) but is nested by different class") << _(
913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
            "struct Enclosing\n"
            "{\n"
            "struct A\n"
            "{\n"
            "   int int_enclosing_a;\n"
            "};\n"
            "};\n"
            "namespace NS2\n"
            "{\n"
            "struct A : Enclosing::A\n"
            "{\n"
            "   int int_ns2_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS2::A c;\n"
929 930 931 932 933
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_enclosing_a")
            << QLatin1String("int_ns2_a")
            << QLatin1String("A"));
934

935 936
    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived (nested) but is nested by different class") << _(
937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952
            "struct EnclosingBase\n"
            "{\n"
            "struct A\n"
            "{\n"
            "   int int_enclosing_base_a;\n"
            "};\n"
            "};\n"
            "struct EnclosingDerived\n"
            "{\n"
            "struct A : EnclosingBase::A\n"
            "{\n"
            "   int int_enclosing_derived_a;\n"
            "};\n"
            "};\n"
            "\n"
            "EnclosingDerived::A c;\n"
953 954 955 956 957
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_enclosing_base_a")
            << QLatin1String("int_enclosing_derived_a")
            << QLatin1String("A"));
958

959 960
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is a template") << _(
961 962 963 964 965 966 967
            "template <typename T>\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A<int> c;\n"
968 969 970 971
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
972

973
    QTest::newRow("cyclic_inheritance: direct cyclic inheritance") << _(
974 975 976 977 978 979
            "struct B;\n"
            "struct A : B { int _a; };\n"
            "struct B : A { int _b; };\n"
            "\n"
            "A c;\n"
            "@\n"
980 981 982 983 984
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b"));
985

986
    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance") << _(
987 988 989 990 991 992 993
            "struct C;\n"
            "struct A : C { int _a; };\n"
            "struct B : A { int _b; };\n"
            "struct C : B { int _c; };\n"
            "\n"
            "A c;\n"
            "@\n"
994 995 996 997 998 999 1000 1001 1002
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b")
            << QLatin1String("C")
            << QLatin1String("_c"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance") << _(
1003 1004 1005 1006 1007 1008 1009
            "struct B;\n"
            "struct A : B { int _a; };\n"
            "struct C { int _c; };\n"
            "struct B : C, A { int _b; };\n"
            "\n"
            "A c;\n"
            "@\n"
1010 1011 1012 1013 1014 1015 1016 1017 1018
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b")
            << QLatin1String("C")
            << QLatin1String("_c"));

    QTest::newRow("cyclic_inheritance: direct cyclic inheritance with templates") << _(
1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031
            "template< typename T > struct C;\n"
            "template< typename T, typename S > struct D : C< S >\n"
            "{\n"
            "   T _d_t;\n"
            "   S _d_s;\n"
            "};\n"
            "template< typename T > struct C : D< T, int >\n"
            "{\n"
            "   T _c_t;\n"
            "};\n"
            "\n"
            "D<int, float> c;\n"
            "@\n"
1032 1033 1034 1035 1036 1037 1038 1039
        ) << _("c.") << (QStringList()
            << QLatin1String("D")
            << QLatin1String("_d_t")
            << QLatin1String("_d_s")
            << QLatin1String("C")
            << QLatin1String("_c_t"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance with templates") << _(
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
            "template< typename T > struct C;\n"
            "template< typename T, typename S > struct D : C< S >\n"
            "{\n"
            "   T _d_t;\n"
            "   S _d_s;\n"
            "};\n"
            "template< typename T > struct B : D< T, int >\n"
            "{\n"
            "   T _b_t;\n"
            "};\n"
            "template< typename T > struct C : B<T>\n"
            "{\n"
            "   T _c_t;\n"
            "};\n"
            "\n"
            "D<int, float> c;\n"
            "@\n"
1057 1058 1059 1060 1061 1062 1063 1064 1065
        ) << _("c.") << (QStringList()
            << QLatin1String("D")
            << QLatin1String("_d_t")
            << QLatin1String("_d_s")
            << QLatin1String("C")
            << QLatin1String("_c_t")
            << QLatin1String("B")
            << QLatin1String("_b_t"));

1066
    QTest::newRow("cyclic_inheritance: direct cyclic inheritance with templates. "
1067
                  "more complex situation") << _(
1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
           "namespace NS\n"
           "{\n"
           "template <typename T> struct SuperClass\n"
           "{\n"
           "    typedef T Type;\n"
           "    Type super_class_type;\n"
           "};\n"
           "}\n"
           "\n"
           "template <typename T>\n"
           "struct Class;\n"
           "\n"
           "template <typename T, typename S>\n"
           "struct ClassRecurse : Class<S>\n"
           "{\n"
           "    T class_recurse_t;\n"
           "    S class_recurse_s;\n"
           "};\n"
           "\n"
           "template <typename T>\n"
           "struct Class : ClassRecurse< T, typename ::NS::SuperClass<T>::Type >\n"
           "{\n"
           "    T class_t;\n"
           "};\n"
           "\n"
           "Class<int> c;\n"
           "@\n"
1095 1096 1097 1098 1099 1100 1101 1102
        ) << _("c.") << (QStringList()
            << QLatin1String("Class")
            << QLatin1String("ClassRecurse")
            << QLatin1String("class_t")
            << QLatin1String("class_recurse_s")
            << QLatin1String("class_recurse_t"));

    QTest::newRow("enclosing_template_class: nested class with enclosing template class") << _(
1103 1104 1105 1106 1107 1108 1109 1110
            "template<typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested { int int_nested; }; \n"
            "    int int_enclosing;\n"
            "};\n"
            "\n"
            "Enclosing<int>::Nested c;"
1111 1112 1113 1114
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("Nested")
            << QLatin1String("int_nested"));
1115

1116 1117
    QTest::newRow("enclosing_template_class: nested template class with enclosing template "
                  "class") << _(
1118 1119 1120 1121 1122 1123 1124 1125
            "template<typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    template<typename T> struct Nested { int int_nested; }; \n"
            "    int int_enclosing;\n"
            "};\n"
            "\n"
            "Enclosing<int>::Nested<int> c;"
1126 1127 1128 1129
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("Nested")
            << QLatin1String("int_nested"));
1130

1131
    QTest::newRow("instantiate_nested_class_when_enclosing_is_template") << _(
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149
            "struct Foo \n"
            "{\n"
            "    int foo_i;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested\n"
            "    {\n"
            "        T nested_t;\n"
            "    } nested;\n"
            "\n"
            "    T enclosing_t;\n"
            "};\n"
            "\n"
            "Enclosing<Foo> enclosing;\n"
            "@\n"
1150 1151 1152
        ) << _("enclosing.nested.nested_t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo_i"));
1153

1154
    QTest::newRow("instantiate_nested_of_nested_class_when_enclosing_is_template") << _(
1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176
            "struct Foo \n"
            "{\n"
            "    int foo_i;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested\n"
            "    {\n"
            "        T nested_t;\n"
            "        struct NestedNested\n"
            "        {\n"
            "            T nestedNested_t;\n"
            "        } nestedNested;\n"
            "    } nested;\n"
            "\n"
            "    T enclosing_t;\n"
            "};\n"
            "\n"
            "Enclosing<Foo> enclosing;\n"
            "@\n"
1177 1178 1179
        ) << _("enclosing.nested.nestedNested.nestedNested_t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo_i"));
1180

1181
    QTest::newRow("instantiate_template_with_default_argument_type") << _(
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "};\n"
            "\n"
            "template <typename T = Foo>\n"
            "struct Template\n"
            "{\n"
            "    T t;\n"
            "};\n"
            "\n"
            "Template<> templateWithDefaultTypeOfArgument;\n"
            "@\n"
1195 1196 1197
        ) << _("templateWithDefaultTypeOfArgument.t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1198

1199
    QTest::newRow("instantiate_template_with_default_argument_type_as_template") << _(
1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "};\n"
            "\n"
            "template <typename T>\n"
            "struct TemplateArg\n"
            "{\n"
            "    T t;\n"
            "};\n"
            "template <typename T, typename S = TemplateArg<T> >\n"
            "struct Template\n"
            "{\n"
            "    S s;\n"
            "};\n"
            "\n"
            "Template<Foo> templateWithDefaultTypeOfArgument;\n"
1217
            "@\n"
1218 1219 1220
        ) << _("templateWithDefaultTypeOfArgument.s.t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1221

1222
    QTest::newRow("typedef_of_pointer") << _(
1223 1224 1225 1226 1227 1228
            "struct Foo { int bar; };\n"
            "typedef Foo *FooPtr;\n"
            "void main()\n"
            "{\n"
            "   FooPtr ptr;\n"
            "   @\n"
1229 1230 1231 1232
            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1233

1234
    QTest::newRow("typedef_of_pointer_inside_function") << _(
1235 1236 1237 1238 1239 1240
            "struct Foo { int bar; };\n"
            "void f()\n"
            "{\n"
            "   typedef Foo *FooPtr;\n"
            "   FooPtr ptr;\n"
            "   @\n"
1241 1242 1243 1244
            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1245

1246
    QTest::newRow("typedef_is_inside_function_before_declaration_block") << _(
1247 1248 1249 1250 1251 1252 1253 1254 1255
            "struct Foo { int bar; };\n"
            "void f()\n"
            "{\n"
            "   typedef Foo *FooPtr;\n"
            "   if (true) {\n"
            "       FooPtr ptr;\n"
            "       @\n"
            "   }"
            "}"
1256 1257 1258
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1259

1260
    QTest::newRow("resolve_complex_typedef_with_template") << _(
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            "template <typename T>\n"
            "struct Template2\n"
            "{\n"
            "    typedef typename T::template Template1<T>::TT TemplateTypedef;\n"
            "    TemplateTypedef templateTypedef;\n"
            "};\n"
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "    template <typename T>\n"
            "    struct Template1\n"
            "    {\n"
            "        typedef T TT;\n"
            "    };\n"
            "};\n"
            "void fun()\n"
            "{\n"
            "    Template2<Foo> template2;\n"
            "    @\n"
            "}\n"
1281 1282 1283 1284
        ) << _("template2.templateTypedef.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar")
            << QLatin1String("Template1"));
1285

1286
    QTest::newRow("template_specialization_with_pointer") << _(
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            "template <typename T>\n"
            "struct Template\n"
            "{\n"
            "    T variable;\n"
            "};\n"
            "template <typename T>\n"
            "struct Template<T *>\n"
            "{\n"
            "    T *pointer;\n"
            "};\n"
            "Template<int*> templ;\n"
            "@\n"
1299 1300 1301
        ) << _("templ.") << (QStringList()
            << QLatin1String("Template")
            << QLatin1String("pointer"));
1302

1303
    QTest::newRow("typedef_using_templates1") << _(
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            "namespace NS1\n"
            "{\n"
            "template<typename T>\n"
            "struct NS1Struct\n"
            "{\n"
            "    typedef T *pointer;\n"
            "    pointer bar;\n"
            "};\n"
            "}\n"
            "namespace NS2\n"
            "{\n"
            "using NS1::NS1Struct;\n"
            "\n"
            "template <typename T>\n"
            "struct NS2Struct\n"
            "{\n"
            "    typedef NS1Struct<T> NS1StructTypedef;\n"
            "    typedef typename NS1StructTypedef::pointer pointer;\n"
            "    pointer p;\n"
            "};\n"
            "}\n"
            "struct Foo\n"
            "{\n"
            "    int bar;\n"
            "};\n"
            "void fun()\n"
            "{\n"
            "    NS2::NS2Struct<Foo> s;\n"
            "    @\n"
            "}\n"
1334 1335 1336
        ) << _("s.p->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1337

1338
    QTest::newRow("typedef_using_templates2") << _(
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