cppcompletion_test.cpp 98.5 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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** a written agreement between you and The Qt Company.  For licensing terms and
** conditions see http://www.qt.io/terms-conditions.  For further information
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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
** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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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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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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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
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        && list.contains(QLatin1String("override"))
        && list.contains(QLatin1String("final"))
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        && 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: typedef not available in derived",
                 "We can live with that...", 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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    QCOMPARE(actualCompletions, expectedCompletions);
}

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void CppToolsPlugin::test_global_completion_data()
{
    QTest::addColumn<QByteArray>("code");
    QTest::addColumn<QByteArray>("prefix");
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    QTest::addColumn<QStringList>("requiredCompletionItems");
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    // 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")
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         << _("&")
         << QStringList();
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    QTest::newRow("global completion after & in function argument")
         << _("int f() { return @; }\n")
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         << _("&")
         << QStringList();

    // Check global completion after one line comments
    const QByteArray codeTemplate = "int myGlobal;\n"
                                    "<REPLACEMENT>\n"
                                    "@\n";
    const QStringList replacements = QStringList()
            << QLatin1String("// text")
            << QLatin1String("// text.")
            << QLatin1String("/// text")
            << QLatin1String("/// text.")
               ;
    foreach (const QString &replacement, replacements) {
        QByteArray code = codeTemplate;
        code.replace("<REPLACEMENT>", replacement.toUtf8());
        const QByteArray tag = _("completion after comment: ") + replacement.toUtf8();
        QTest::newRow(tag) << code << QByteArray() << QStringList(QLatin1String("myGlobal"));
    }
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}

void CppToolsPlugin::test_global_completion()
{
    QFETCH(QByteArray, code);
    QFETCH(QByteArray, prefix);
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    QFETCH(QStringList, requiredCompletionItems);
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    CompletionTestCase test(code, prefix);
    QVERIFY(test.succeededSoFar());
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    const QStringList completions = test.getCompletions();
    QVERIFY(isProbablyGlobalCompletion(completions));
    QVERIFY(completions.toSet().contains(requiredCompletionItems.toSet()));
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}

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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"
592
593
594
        ) << _("container.get().") << (QStringList()
            << QLatin1String("Item")
            << QLatin1String("i"));
595

596
    QTest::newRow("template_7") << _(
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609
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611
612
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614
615
616
            "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"
617
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619
        ) << _("p->") << (QStringList()
            << QLatin1String("Test")
            << QLatin1String("i"));
620

621
    QTest::newRow("type_of_pointer_is_typedef") << _(
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626
627
            "typedef struct Foo\n"
            "{\n"
            "    int foo;\n"
            "} Foo;\n"
            "Foo *bar;\n"
            "@\n"
628
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630
        ) << _("bar->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo"));
631

632
    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"
647
648
649
        ) << _("templateChar.") << (QStringList()
            << QLatin1String("Template")
            << QLatin1String("templateChar_i"));
650

651
    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"
658
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            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember"));
664

665
    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"
673
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682
            "}"
        ) << _("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") << _(
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689
            "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"
690
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            "}"
        ) << _("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") << _(
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708
            "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"
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            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember")
            << QLatin1String("More")
            << QLatin1String("moreMember"));

    QTest::newRow("template_as_base: base as nested template name") << _(
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724
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726
727
            "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"
728
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731
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733
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember"));
734

735
    QTest::newRow("template_as_base: base as nested template name in non-template") << _(
736
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738
739
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741
742
743
744
            "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"
745
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748
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750
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember"));
751

752
    QTest::newRow("template_as_base: base as template name in non-template") << _(
753
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757
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759
760
761
            "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"
762
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764
765
766
767
768
769
770
            "}"
        ) << _("c.") << (QStringList()
            << QLatin1String("Data")
            << QLatin1String("dataMember")
            << QLatin1String("Final")
            << QLatin1String("finalMember")
            << QLatin1String("Other")
            << QLatin1String("otherMember"));

771
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789
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794
795
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797
798
    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"));

799
    QTest::newRow("use_global_identifier_as_base_class: derived as global and base as global") << _(
800
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802
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804
805
806
807
808
809
810
            "struct Global\n"
            "{\n"
            "    int int_global;\n"
            "};\n"
            "\n"
            "struct Final : ::Global\n"
            "{\n"
            "   int int_final;\n"
            "};\n"
            "\n"
            "Final c;\n"
811
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813
814
815
816
817
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));

818
    QTest::newRow("use_global_identifier_as_base_class: derived is inside namespace. "
819
                  "base as global") << _(
820
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822
823
824
825
826
827
828
829
830
831
832
833
            "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"
834
835
836
837
838
839
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_global")
            << QLatin1String("int_final")
            << QLatin1String("Final")
            << QLatin1String("Global"));
840

841
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854
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856
857
858
859
860
861
862
863
    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"));
864

865
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class") << _(
866
867
868
869
870
871
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A c;\n"
872
873
874
875
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
876

877
878
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is in namespace") << _(
879
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881
882
883
884
885
886
887
            "namespace NS\n"
            "{\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
888
889
890
891
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
892

893
894
    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") << _(
895
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900
901
902
903
            "namespace NS\n"
            "{\n"
            "struct A : NS::A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "}\n"
            "\n"
            "NS::A c;\n"
904
905
906
907
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
908

909
910
    QTest::newRow("base_class_has_name_the_same_as_derived: base class has the same name as "
                  "derived but in different namespace") << _(
911
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914
915
916
917
918
919
920
921
922
923
924
925
926
            "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"
927
928
929
930
931
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_ns1_a")
            << QLatin1String("int_ns2_a")
            << QLatin1String("A"));
932

933
934
    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") << _(
935
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937
938
939
940
941
942
943
944
945
946
947
948
949
950
            "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"
951
952
953
954
955
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_enclosing_a")
            << QLatin1String("int_ns2_a")
            << QLatin1String("A"));
956

957
958
    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") << _(
959
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961
962
963
964
965
966
967
968
969
970
971
972
973
974
            "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"
975
976
977
978
979
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_enclosing_base_a")
            << QLatin1String("int_enclosing_derived_a")
            << QLatin1String("A"));
980

981
982
    QTest::newRow("base_class_has_name_the_same_as_derived: base class is derived class. "
                  "class is a template") << _(
983
984
985
986
987
988
989
            "template <typename T>\n"
            "struct A : A\n"
            "{\n"
            "   int int_a;\n"
            "};\n"
            "\n"
            "A<int> c;\n"
990
991
992
993
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("int_a")
            << QLatin1String("A"));
994

995
    QTest::newRow("cyclic_inheritance: direct cyclic inheritance") << _(
996
997
998
999
1000
1001
            "struct B;\n"
            "struct A : B { int _a; };\n"
            "struct B : A { int _b; };\n"
            "\n"
            "A c;\n"
            "@\n"
1002
1003
1004
1005
1006
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b"));
1007

1008
    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance") << _(
1009
1010
1011
1012
1013
1014
1015
            "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"
1016
1017
1018
1019
1020
1021
1022
1023
1024
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b")
            << QLatin1String("C")
            << QLatin1String("_c"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance") << _(
1025
1026
1027
1028
1029
1030
1031
            "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"
1032
1033
1034
1035
1036
1037
1038
1039
1040
        ) << _("c.") << (QStringList()
            << QLatin1String("A")
            << QLatin1String("_a")
            << QLatin1String("B")
            << QLatin1String("_b")
            << QLatin1String("C")
            << QLatin1String("_c"));

    QTest::newRow("cyclic_inheritance: direct cyclic inheritance with templates") << _(
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
            "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"
1054
1055
1056
1057
1058
1059
1060
1061
        ) << _("c.") << (QStringList()
            << QLatin1String("D")
            << QLatin1String("_d_t")
            << QLatin1String("_d_s")
            << QLatin1String("C")
            << QLatin1String("_c_t"));

    QTest::newRow("cyclic_inheritance: indirect cyclic inheritance with templates") << _(
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
            "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"
1079
1080
1081
1082
1083
1084
1085
1086
1087
        ) << _("c.") << (QStringList()
            << QLatin1String("D")
            << QLatin1String("_d_t")
            << QLatin1String("_d_s")
            << QLatin1String("C")
            << QLatin1String("_c_t")
            << QLatin1String("B")
            << QLatin1String("_b_t"));

1088
    QTest::newRow("cyclic_inheritance: direct cyclic inheritance with templates. "
1089
                  "more complex situation") << _(
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
           "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"
1117
1118
1119
1120
1121
1122
1123
1124
        ) << _("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") << _(
1125
1126
1127
1128
1129
1130
1131
1132
            "template<typename T>\n"
            "struct Enclosing\n"
            "{\n"
            "    struct Nested { int int_nested; }; \n"
            "    int int_enclosing;\n"
            "};\n"
            "\n"
            "Enclosing<int>::Nested c;"
1133
1134
1135
1136
            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("Nested")
            << QLatin1String("int_nested"));
1137

1138
1139
    QTest::newRow("enclosing_template_class: nested template class with enclosing template "
                  "class") << _(
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            "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;"
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            "@\n"
        ) << _("c.") << (QStringList()
            << QLatin1String("Nested")
            << QLatin1String("int_nested"));
1152

1153
    QTest::newRow("instantiate_nested_class_when_enclosing_is_template") << _(
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            "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"
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        ) << _("enclosing.nested.nested_t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo_i"));
1175

1176
    QTest::newRow("instantiate_nested_of_nested_class_when_enclosing_is_template") << _(
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            "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"
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        ) << _("enclosing.nested.nestedNested.nestedNested_t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("foo_i"));
1202

1203
    QTest::newRow("instantiate_template_with_default_argument_type") << _(
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            "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"
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        ) << _("templateWithDefaultTypeOfArgument.t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1220

1221
    QTest::newRow("instantiate_template_with_default_argument_type_as_template") << _(
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            "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"
1239
            "@\n"
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        ) << _("templateWithDefaultTypeOfArgument.s.t.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1243

1244
    QTest::newRow("typedef_of_pointer") << _(
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            "struct Foo { int bar; };\n"
            "typedef Foo *FooPtr;\n"
            "void main()\n"
            "{\n"
            "   FooPtr ptr;\n"
            "   @\n"
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            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1255

1256
    QTest::newRow("typedef_of_pointer_inside_function") << _(
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            "struct Foo { int bar; };\n"
            "void f()\n"
            "{\n"
            "   typedef Foo *FooPtr;\n"
            "   FooPtr ptr;\n"
            "   @\n"
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            "}"
        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1267

1268
    QTest::newRow("typedef_is_inside_function_before_declaration_block") << _(
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            "struct Foo { int bar; };\n"
            "void f()\n"
            "{\n"
            "   typedef Foo *FooPtr;\n"
            "   if (true) {\n"
            "       FooPtr ptr;\n"
            "       @\n"
            "   }"
            "}"
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        ) << _("ptr->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1281

1282
    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"
1303
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        ) << _("template2.templateTypedef.") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar")
            << QLatin1String("Template1"));
1307

1308
    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"
1321
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        ) << _("templ.") << (QStringList()
            << QLatin1String("Template")
            << QLatin1String("pointer"));
1324

1325
    QTest::newRow("typedef_using_templates1") << _(
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1332
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1334
1335
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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"
1356
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1358
        ) << _("s.p->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1359

1360
    QTest::newRow("typedef_using_templates2") << _(
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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>::pointer p;\n"
            "    @\n"
            "}\n"
1391
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1393
        ) << _("p->") << (QStringList()
            << QLatin1String("Foo")
            << QLatin1String("bar"));
1394

1395
    QTest::newRow("namespace_alias_with_many_namespace_declarations") << _(
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1401
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1406
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1420
            "namespace NS1\n"
            "{\n"
            "namespace NS2\n"
            "{\n"
            "struct Foo1\n"
            "{\n"
            "    int bar1;\n"
            "};\n"
            "}\n"
            "}\n"
            "namespace NS1\n"
            "{\n"
            "namespace NS2\n"
            "{\n"
            "struct Foo2\n"
            "{\n"
            "    int bar2;\n"
            "};\n"
            "}\n"
            "}\n"
            "namespace NS = NS1::NS2;\n"
            "int main()\n"
            "{\n"
            "    @\n"
            "}\n"
1421
1422
1423
        ) << _("NS::") << (QStringList()
            << QLatin1String("Foo1")
            << QLatin1String("Foo2"));
1424

1425
    QTest::newRow("QTCREATORBUG9098") << _(
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1434
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1441
            "template <typename T>\n"
            "class B\n"
            "{\n"
            "public:\n"
            "    C<T> c;\n"
            "};\n"
            "template <typename T>\n"
            "class A\n"
            "{\n"
            "public:\n"
            "    B<T> b;\n"
            "    void fun()\n"
            "    {\n"
            "       @\n"
            "    }\n"
            "};\n"
1442
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1444
        ) << _("b.") << (QStringList()
            << QLatin1String("c")
            << QLatin1String("B"));
1445

1446
    QTest::newRow("type_and_using_declaration: type and using declaration inside function") << _(
1447
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1450
1451
1452
1453
1454
1455
            "namespace NS\n"
            "{\n"
            "struct C { int m; };\n"
            "}\n"
            "void foo()\n"
            "{\n"
            "    using NS::C;\n"
            "    C c;\n"
            "    @\n"
1456
1457