/**
* @return true if the token stream in its present state can convert
* the token stream to a set expression.
*
* @param in -- The token stream.
* @return true if the stream of tokens can be accepted, false otherwise.
*/
bool Set_::CanAccept_( Parser const& parser
, TokenStream& stream
, std::vector<strine::Element>& elements) const
{
bool can_accept = parser.CanParse( stream
, Set_::parse_rules
, elements );
return can_accept;
}
/**
* @return true if the token stream in its present state can convert
* the token stream to an error expression.
*
* @param in -- The token stream.
* @return true if the stream of tokens can be accepted, false otherwise.
*/
bool Error_::CanAccept_( Parser const& parser
, TokenStream& stream
, std::vector<strine::Element>& elements) const
{
bool can_accept = parser.CanParse( stream
, Error_::error_parse_rules1
, elements );
if (false == can_accept)
{
stream.Rollback();
can_accept = parser.CanParse( stream
, Error_::error_parse_rules2
, elements );
}
return can_accept;
}
