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|
//overload for list nodes
template<class SyntaxNodeT>
SyntaxNodeT
convert_node
(
const tree_node_t& node,
typename boost::enable_if<syntax_nodes::utility::is_list_node>::type* = 0
)
{
return convert_list_node(node);
}
//overload for optional nodes
template<class SyntaxNodeT>
SyntaxNodeT
convert_node
(
const tree_node_t& node,
typename boost::enable_if<syntax_nodes::utility::is_optional_node>::type* = 0
)
{
return convert_optional_node(node);
}
/*
* Utility types
*/
typedef char yes_type;
struct no_type
{
char padding[8];
};
/*
* list_node type trait
*/
namespace list_node_check
{
template<class T>
static
yes_type
check_sig(typename T::item*);
template<class T>
static
no_type
check_sig(...);
}
template<class T>
struct is_list_node
{
static const bool value = sizeof(list_node_check::check_sig(0)) == sizeof(yes_type);
};
/*
* optional_node type trait
*/
template<class T>
struct is_optional_node
{
static const bool value = false;
};
template<class T>
struct is_optional_node<syntax_nodes::optional_node>
{
static const bool value = true;
}; |
