Method testBitWidth

plugins/clang/tests/test_duchain.cpp:2601–2672

}

void TestDUChain::testBitWidth()
{
#if CINDEX_VERSION_MINOR >= 16
    TestFile file(QStringLiteral(R"(
        #include <climits>

        struct foo {
            int a;
            unsigned int b:1;
            unsigned char c:7;
            int d:32;
            int e[2];
            unsigned       length    : (sizeof(int)*CHAR_BIT - 1);

            // error case
            int f:0;
            int g:-1;
            int h:33;
        };)"), QStringLiteral("cpp"));

    QVERIFY(file.parseAndWait());
    {
        DUChainReadLocker lock;
        QVERIFY(file.topContext());
        QCOMPARE(file.topContext()->localDeclarations().size(), 1);
        QCOMPARE(file.topContext()->childContexts().size(), 1);

        auto fooContext = file.topContext()->childContexts().first();
        QVERIFY(fooContext);
        QCOMPARE(fooContext->type(), DUContext::Class);
        QCOMPARE(fooContext->localDeclarations().size(), 9);
        QCOMPARE(fooContext->childContexts().size(), 0);

        auto varA = dynamic_cast<ClassMemberDeclaration *>(fooContext->localDeclarations().at(0));
        QVERIFY(varA);
        QCOMPARE(varA->bitWidth(), ClassMemberDeclaration::NotABitField);
        auto varB = dynamic_cast<ClassMemberDeclaration *>(fooContext->localDeclarations().at(1));
        QVERIFY(varB);
        QCOMPARE(varB->bitWidth(), 1);
        auto varC = dynamic_cast<ClassMemberDeclaration *>(fooContext->localDeclarations().at(2));
        QVERIFY(varC);
        QCOMPARE(varC->bitWidth(), 7);
        auto varD = dynamic_cast<ClassMemberDeclaration *>(fooContext->localDeclarations().at(3));
        QVERIFY(varD);
        QCOMPARE(varD->bitWidth(), 32);
        auto varE = dynamic_cast<ClassMemberDeclaration *>(fooContext->localDeclarations().at(4));
        QVERIFY(varE);
        QCOMPARE(varE->bitWidth(), ClassMemberDeclaration::NotABitField);
        const auto varLength = dynamic_cast<const ClassMemberDeclaration*>(fooContext->localDeclarations().at(5));
        QVERIFY(varLength);
        QCOMPARE(varLength->bitWidth(), sizeof(int) * CHAR_BIT - 1);

        // error case
        auto top = file.topContext();
        QVERIFY(top);
        QCOMPARE(top->problems().count(), 3);

        // error: named bit-field 'f' has zero width