C++ QScriptValue::strictlyEquals方法代码示例

void tst_QScriptValueGenerated::assignAndCopyConstruct_test(const char *, const QScriptValue &value)
{
    QScriptValue copy(value);
    QCOMPARE(copy.strictlyEquals(value), !value.isNumber() || !qIsNaN(value.toNumber()));
    QCOMPARE(copy.engine(), value.engine());

    QScriptValue assigned = copy;
    QCOMPARE(assigned.strictlyEquals(value), !copy.isNumber() || !qIsNaN(copy.toNumber()));
    QCOMPARE(assigned.engine(), assigned.engine());

    QScriptValue other(!value.toBool());
    assigned = other;
    QVERIFY(!assigned.strictlyEquals(copy));
    QVERIFY(assigned.strictlyEquals(other));
    QCOMPARE(assigned.engine(), other.engine());
}

void tst_QScriptContext::pushAndPopContext()
{
    QScriptEngine eng;
    QScriptContext *topLevel = eng.currentContext();
    QCOMPARE(topLevel->engine(), &eng);

    QScriptContext *ctx = eng.pushContext();
    QVERIFY(ctx != 0);
    QCOMPARE(ctx->parentContext(), topLevel);
    QCOMPARE(eng.currentContext(), ctx);
    QCOMPARE(ctx->engine(), &eng);
    QCOMPARE(ctx->state(), QScriptContext::NormalState);
    QCOMPARE(ctx->isCalledAsConstructor(), false);
    QCOMPARE(ctx->argumentCount(), 0);
    QCOMPARE(ctx->argument(0).isUndefined(), true);
    QVERIFY(!ctx->argument(-1).isValid());
    QCOMPARE(ctx->argumentsObject().isObject(), true);
    QCOMPARE(ctx->activationObject().isObject(), true);
    QCOMPARE(ctx->callee().isValid(), false);
    QCOMPARE(ctx->thisObject().strictlyEquals(eng.globalObject()), true);
    QCOMPARE(ctx->scopeChain().size(), 2);
    QVERIFY(ctx->scopeChain().at(0).equals(ctx->activationObject()));
    QVERIFY(ctx->scopeChain().at(1).equals(eng.globalObject()));

    QScriptContext *ctx2 = eng.pushContext();
    QCOMPARE(ctx2->parentContext(), ctx);
    QCOMPARE(eng.currentContext(), ctx2);

    eng.popContext();
    QCOMPARE(eng.currentContext(), ctx);
    eng.popContext();
    QCOMPARE(eng.currentContext(), topLevel);

    // popping the top-level context is not allowed
    QTest::ignoreMessage(QtWarningMsg, "QScriptEngine::popContext() doesn't match with pushContext()");
    eng.popContext();
    QCOMPARE(eng.currentContext(), topLevel);

    {
        QScriptContext *ctx3 = eng.pushContext();
        ctx3->activationObject().setProperty("foo", QScriptValue(&eng, 123));
        QVERIFY(eng.evaluate("foo").strictlyEquals(QScriptValue(&eng, 123)));
        eng.evaluate("var bar = 'ciao'");
        QVERIFY(ctx3->activationObject().property("bar", QScriptValue::ResolveLocal).strictlyEquals(QScriptValue(&eng, "ciao")));
        eng.popContext();
    }

    {
        QScriptContext *ctx4 = eng.pushContext();
        QScriptValue obj = eng.newObject();
        obj.setProperty("prop", QScriptValue(&eng, 456));
        ctx4->setThisObject(obj);
        QScriptValue ret = eng.evaluate("var tmp = this.prop; tmp + 1");
        QCOMPARE(eng.currentContext(), ctx4);
        QVERIFY(ret.strictlyEquals(QScriptValue(&eng, 457)));
        eng.popContext();
    }

    // throwing an exception
    {
        QScriptContext *ctx5 = eng.pushContext();
        QScriptValue ret = eng.evaluate("throw new Error('oops')");
        QVERIFY(ret.isError());
        QVERIFY(eng.hasUncaughtException());
        QCOMPARE(eng.currentContext(), ctx5);
        eng.popContext();
    }
}

void tst_QScriptClass::extension()
{
    QScriptEngine eng;
    {
        TestClass cls(&eng);
        cls.setCallableMode(TestClass::NotCallable);
        QVERIFY(!cls.supportsExtension(QScriptClass::Callable));
        QVERIFY(!cls.supportsExtension(QScriptClass::HasInstance));
        QScriptValue obj = eng.newObject(&cls);
        QVERIFY(!obj.call().isValid());
        QCOMPARE((int)cls.lastExtensionType(), -1);
        QVERIFY(!obj.instanceOf(obj));
        QCOMPARE((int)cls.lastExtensionType(), -1);
    }
    // Callable
    {
        TestClass cls(&eng);
        cls.setCallableMode(TestClass::CallableReturnsSum);
        QVERIFY(cls.supportsExtension(QScriptClass::Callable));

        QScriptValue obj = eng.newObject(&cls);
        eng.globalObject().setProperty("obj", obj);
        obj.setProperty("one", QScriptValue(&eng, 1));
        obj.setProperty("two", QScriptValue(&eng, 2));
        obj.setProperty("three", QScriptValue(&eng, 3));
        // From C++
        cls.clearReceivedArgs();
        {
            QScriptValueList args;
            args << QScriptValue(&eng, 4) << QScriptValue(&eng, 5);
            QScriptValue ret = obj.call(obj, args);
            QCOMPARE(cls.lastExtensionType(), QScriptClass::Callable);
            QCOMPARE(cls.lastExtensionArgument().userType(), qMetaTypeId<QScriptContext*>());
            QVERIFY(ret.isNumber());
            QCOMPARE(ret.toNumber(), qsreal(15));
        }
        // From JS
        cls.clearReceivedArgs();
        {
            QScriptValue ret = eng.evaluate("obj(4, 5)");
            QCOMPARE(cls.lastExtensionType(), QScriptClass::Callable);
            QCOMPARE(cls.lastExtensionArgument().userType(), qMetaTypeId<QScriptContext*>());
            QVERIFY(ret.isNumber());
            QCOMPARE(ret.toNumber(), qsreal(15));
        }

        cls.setCallableMode(TestClass::CallableReturnsArgument);
        // From C++
        cls.clearReceivedArgs();
        {
            QScriptValue ret = obj.call(obj, QScriptValueList() << 123);
            QCOMPARE(cls.lastExtensionType(), QScriptClass::Callable);
            QCOMPARE(cls.lastExtensionArgument().userType(), qMetaTypeId<QScriptContext*>());
            QVERIFY(ret.isNumber());
            QCOMPARE(ret.toInt32(), 123);
        }
        cls.clearReceivedArgs();
        {
            QScriptValue ret = obj.call(obj, QScriptValueList() << true);
            QCOMPARE(cls.lastExtensionType(), QScriptClass::Callable);
            QCOMPARE(cls.lastExtensionArgument().userType(), qMetaTypeId<QScriptContext*>());
            QVERIFY(ret.isBoolean());
            QCOMPARE(ret.toBoolean(), true);
        }
        {
            QScriptValue ret = obj.call(obj, QScriptValueList() << QString::fromLatin1("ciao"));
            QVERIFY(ret.isString());
            QCOMPARE(ret.toString(), QString::fromLatin1("ciao"));
        }
        {
            QScriptValue objobj = eng.newObject();
            QScriptValue ret = obj.call(obj, QScriptValueList() << objobj);
            QVERIFY(ret.isObject());
            QVERIFY(ret.strictlyEquals(objobj));
        }
        {
            QScriptValue ret = obj.call(obj, QScriptValueList() << QScriptValue());
            QVERIFY(ret.isUndefined());
        }
        // From JS
        cls.clearReceivedArgs();
        {
            QScriptValue ret = eng.evaluate("obj(123)");
            QVERIFY(ret.isNumber());
            QCOMPARE(ret.toInt32(), 123);
        }

        cls.setCallableMode(TestClass::CallableReturnsInvalidVariant);
        {
            QScriptValue ret = obj.call(obj);
            QVERIFY(ret.isUndefined());
        }

        cls.setCallableMode(TestClass::CallableReturnsThisObject);
        // From C++
        {
            QScriptValue ret = obj.call(obj);
            QVERIFY(ret.isObject());
            QVERIFY(ret.strictlyEquals(obj));
        }
//.........这里部分代码省略.........

void tst_QScriptClass::getAndSetProperty()
{
    QScriptEngine eng;

    TestClass cls(&eng);

    QScriptValue obj1 = eng.newObject(&cls);
    QScriptValue obj2 = eng.newObject(&cls);
    QScriptString foo = eng.toStringHandle("foo");
    QScriptString bar = eng.toStringHandle("bar");
    QScriptValue num(&eng, 123);

    // should behave just like normal
    for (int x = 0; x < 2; ++x) {
        QScriptValue &o = (x == 0) ? obj1 : obj2;
        for (int y = 0; y < 2; ++y) {
            QScriptString &s = (y == 0) ? foo : bar;

            // read property
            cls.clearReceivedArgs();
            QScriptValue ret = o.property(s);
            QVERIFY(!ret.isValid());
            QVERIFY(cls.lastQueryPropertyObject().strictlyEquals(o));
            QVERIFY(cls.lastQueryPropertyName() == s);
            QVERIFY(!cls.lastPropertyObject().isValid());
            QVERIFY(!cls.lastSetPropertyObject().isValid());
            QVERIFY(cls.lastQueryPropertyFlags() == QScriptClass::HandlesReadAccess);

            // write property
            cls.clearReceivedArgs();
            o.setProperty(s, num);
            QVERIFY(cls.lastQueryPropertyObject().strictlyEquals(o));
            QVERIFY(cls.lastQueryPropertyName() == s);
            QVERIFY(!cls.lastPropertyObject().isValid());
            QVERIFY(!cls.lastSetPropertyObject().isValid());
            QVERIFY(cls.lastQueryPropertyFlags() == QScriptClass::HandlesWriteAccess);

            // re-read property
            // When a QScriptClass doesn't want to handle a property write,
            // that property becomes a normal property and the QScriptClass
            // shall not be queried about it again.
            cls.clearReceivedArgs();
            QVERIFY(o.property(s).strictlyEquals(num));
            QVERIFY(!cls.lastQueryPropertyObject().isValid());
        }
    }

    // add a custom property
    QScriptString foo2 = eng.toStringHandle("foo2");
    const uint foo2Id = 123;
    const QScriptValue::PropertyFlags foo2Pflags = QScriptValue::Undeletable;
    QScriptValue foo2Value(&eng, 456);
    cls.addCustomProperty(foo2, QScriptClass::HandlesReadAccess | QScriptClass::HandlesWriteAccess,
                          foo2Id, foo2Pflags, foo2Value);

    {
        // read property
        cls.clearReceivedArgs();
        {
            QScriptValue ret = obj1.property(foo2);
            QVERIFY(ret.strictlyEquals(foo2Value));
        }
        QVERIFY(cls.lastQueryPropertyObject().strictlyEquals(obj1));
        QVERIFY(cls.lastQueryPropertyName() == foo2);
        QVERIFY(cls.lastPropertyObject().strictlyEquals(obj1));
        QVERIFY(cls.lastPropertyName() == foo2);
        QCOMPARE(cls.lastPropertyId(), foo2Id);

        // read flags
        cls.clearReceivedArgs();
        QCOMPARE(obj1.propertyFlags(foo2), foo2Pflags);
        QVERIFY(cls.lastQueryPropertyObject().strictlyEquals(obj1));
        QVERIFY(cls.lastQueryPropertyName() == foo2);
        QEXPECT_FAIL("", "classObject.getOwnPropertyDescriptor() reads the property value", Continue);
        QVERIFY(!cls.lastPropertyObject().isValid());
        QVERIFY(cls.lastPropertyFlagsObject().strictlyEquals(obj1));
        QVERIFY(cls.lastPropertyFlagsName() == foo2);
        QCOMPARE(cls.lastPropertyFlagsId(), foo2Id);

        // write property
        cls.clearReceivedArgs();
        QScriptValue newFoo2Value(&eng, 789);
        obj1.setProperty(foo2, newFoo2Value);
        QVERIFY(cls.lastQueryPropertyObject().strictlyEquals(obj1));
        QVERIFY(cls.lastQueryPropertyName() == foo2);

        // read property again
        cls.clearReceivedArgs();
        {
            QScriptValue ret = obj1.property(foo2);
            QVERIFY(ret.strictlyEquals(newFoo2Value));
        }
        QVERIFY(cls.lastQueryPropertyObject().strictlyEquals(obj1));
        QVERIFY(cls.lastQueryPropertyName() == foo2);
        QVERIFY(cls.lastPropertyObject().strictlyEquals(obj1));
        QVERIFY(cls.lastPropertyName() == foo2);
        QCOMPARE(cls.lastPropertyId(), foo2Id);
    }

    // remove script class; normal properties should remain
//.........这里部分代码省略.........

/**
   An unfortunate kludge, this is used by QList<QScriptValue>::find().

   We could use std::set<QScriptValue,CustomLessFtor>, but we have no
   sensible way to perform < on QScriptValue objects.
*/
bool operator==(QScriptValue const & lhs, QScriptValue const & rhs)
{
    return lhs.strictlyEquals(rhs);
}