本文整理汇总了C++中ExecutionContext::catchException方法的典型用法代码示例。如果您正苦于以下问题：C++ ExecutionContext::catchException方法的具体用法？C++ ExecutionContext::catchException怎么用？C++ ExecutionContext::catchException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ExecutionContext的用法示例。
在下文中一共展示了ExecutionContext::catchException方法的2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: toQStringNoThrow
QString Value::toQStringNoThrow() const
{
switch (type()) {
case Value::Empty_Type:
Q_ASSERT(!"empty Value encountered");
case Value::Undefined_Type:
return QStringLiteral("undefined");
case Value::Null_Type:
return QStringLiteral("null");
case Value::Boolean_Type:
if (booleanValue())
return QStringLiteral("true");
else
return QStringLiteral("false");
case Value::Managed_Type:
if (isString())
return stringValue()->toQString();
{
ExecutionContext *ctx = objectValue()->internalClass()->engine->currentContext();
Scope scope(ctx);
ScopedValue ex(scope);
bool caughtException = false;
ScopedValue prim(scope, RuntimeHelpers::toPrimitive(ValueRef::fromRawValue(this), STRING_HINT));
if (scope.hasException()) {
ex = ctx->catchException();
caughtException = true;
} else if (prim->isPrimitive()) {
return prim->toQStringNoThrow();
}
// Can't nest try/catch due to CXX ABI limitations for foreign exception nesting.
if (caughtException) {
ScopedValue prim(scope, RuntimeHelpers::toPrimitive(ex, STRING_HINT));
if (scope.hasException()) {
ex = ctx->catchException();
} else if (prim->isPrimitive()) {
return prim->toQStringNoThrow();
}
}
return QString();
}
case Value::Integer_Type: {
QString str;
RuntimeHelpers::numberToString(&str, (double)int_32, 10);
return str;
}
default: { // double
QString str;
RuntimeHelpers::numberToString(&str, doubleValue(), 10);
return str;
}
} // switch
}示例2: deleteProperty
/*!
Attempts to delete this object's property of the given \a name.
Returns true if the property was deleted, otherwise returns false.
The behavior of this function is consistent with the JavaScript
delete operator. In particular:
\list
\li Non-configurable properties cannot be deleted.
\li This function will return true even if this object doesn't
have a property of the given \a name (i.e., non-existent
properties are "trivially deletable").
\li If this object doesn't have an own property of the given
\a name, but an object in the prototype() chain does, the
prototype object's property is not deleted, and this function
returns true.
\endlist
\sa setProperty(), hasOwnProperty()
*/
bool QJSValue::deleteProperty(const QString &name)
{
ExecutionEngine *engine = d->engine;
ExecutionContext *ctx = engine->currentContext();
Scope scope(engine);
ScopedObject o(scope, d->value.asObject());
if (!o)
return false;
ScopedString s(scope, engine->newString(name));
bool b = o->deleteProperty(s);
if (scope.hasException())
ctx->catchException();
return b;
}