本文整理汇总了C++中variant::get_schema方法的典型用法代码示例。如果您正苦于以下问题：C++ variant::get_schema方法的具体用法？C++ variant::get_schema怎么用？C++ variant::get_schema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variant的用法示例。
在下文中一共展示了variant::get_schema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: attribute
virtual void attribute(const str& name, const variant value)
{
schema_item itm;
if (!obj_->resolve(name, itm))
assert(false); //ought to be mutable
//this tries to fix an importand design flaw of the mutant/xml reader... fault to deduce arrays
variant val = value;
if (itm.type)
{
int options = itm.type->options();
if (options & TYPE_ITERATED)
{
schema* vtype = value.get_schema();
if (!vtype || !(vtype->options() & TYPE_ITERATED))
{
return; //just bail if whats being assigned to an array is not
}
}
}
if (!itm.set)
{
assert(false); //same
}
itm.set->set(obj_, value);
}示例2: write
void base_write_archive::write( Writer w, const str& name, variant& v)
{
schema* type = true_type(v);
void* this_ = v.get_pointer();
//3 use cases:
//- we know the type as attibuted (ints, strings, things like that)
// note the implementor is free to define its custom types
//
//- we are saving an iterable type
//
//- or we are saving an object, these seem to be reasonable assumptions.
if (attributed_type(type))
{
assert(!name.empty());
w->attribute(name, v);
}
else
{
size_t type_options = type->options();
if (type_options & TYPE_ITERATED)
{
iterable iter(v);
iterator it = iter.begin();
iterator nd = iter.end();
WriteIterator wit = w->create_iterator(name, iter.iterated_type());
for(; it != nd; ++it)
{
variant iv = *it;
Writer iw = wit->next(iv);
if (iw)
write(iw, "", iv);
}
}
else
{
Writer writer_ = name.empty()? w : w->create_node(name);
schema* otype = v.get_schema(); assert(otype);
size_t oopt = otype->options();
if (oopt & TYPE_NON_INSTANTIABLE)
{
assert(type != otype);
assert(types_);
str class_id = types_->type_name(type); assert( !class_id.empty() );
w->attribute("class", class_id);
}
//collect what we're saving
schema_collector sc;
type->visit(&sc);
schema_collector::container::iterator it = sc.begin();
schema_collector::container::iterator nd = sc.end();
for(; it != nd; it++)
{
schema_item& item = it->second;
if (item.flags & CONST)
continue;
if (item.flags & TRANSIENT)
continue;
if (item.get)
{
variant value = item.get->get(this_);
write(writer_, it->first, value);
}
}
}
}
}