本文整理汇总了C++中QScriptContext::argumentCount方法的典型用法代码示例。如果您正苦于以下问题：C++ QScriptContext::argumentCount方法的具体用法？C++ QScriptContext::argumentCount怎么用？C++ QScriptContext::argumentCount使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QScriptContext的用法示例。
在下文中一共展示了QScriptContext::argumentCount方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: extension
QVariant JSEmitClass::extension( Extension extension, const QVariant& argument )
{
Q_UNUSED(argument);
if (extension == Callable)
{
// QScriptContext *context = qvariant_cast<QScriptContext*>(argument);
QScriptContext *context = engine()->currentContext();
if ( context->argumentCount() != 2)
{
context->throwError("emit() accepts exactly two parameters");
return QVariant();
}
if ( !context->argument(0).isArray() )
{
context->throwError("The first argument to emit() must be an array");
return QVariant();
}
qDebug("emit(%s,%s)", qPrintable(context->argument(0).toString()), qPrintable(context->argument(1).toString()));
return QVariant(true);
}
return QVariant();
}示例2: pushAndPopContext
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();
}
}示例3: createInstance
QScriptValue DirClass::createInstance(const QScriptContext &context)
{
return context.argumentCount() > 0
? newInstance(context.argument(0).toString())
: newInstance();
}