cttl_impl::xtl_text_entity< StringT > Class Template Reference

Implements behavior of entity(text), user-defined multi-character entity lexeme inside CTTL grammar expression. More...

#include <xtl_primary.h>

Inheritance diagram for cttl_impl::xtl_text_entity< StringT >:

List of all members.

Public Member Functions
template<typename SubstrT >
size_t	internal_find (SubstrT &edge_)
	Implements search evaluation grammar evaluation algorithm.
template<typename SubstrT >
size_t	internal_match (SubstrT &edge_)
	Implements match evaluation grammar evaluation algorithm.
	xtl_text_entity (StringT const &any_text_)
	Constructs and initializes the object.
	xtl_text_entity (typename StringT::value_type const *any_text_)
	Constructs and initializes the object.

---

Detailed Description

template<typename StringT>
class cttl_impl::xtl_text_entity< StringT >

Implements behavior of entity(text), user-defined multi-character entity lexeme inside CTTL grammar expression.

Template Parameters:

StringT

specifies type of the encapsulated string.

Definition at line 2857 of file xtl_primary.h.

---

Constructor & Destructor Documentation

template<typename StringT >

cttl_impl::xtl_text_entity< StringT >::xtl_text_entity

(

typename StringT::value_type const *

any_text_

)

Constructs and initializes the object.

Definition at line 2867 of file xtl_primary.h.

        : m_any_text( any_text_ )
    {
    }

template<typename StringT >

cttl_impl::xtl_text_entity< StringT >::xtl_text_entity

(

StringT const &

any_text_

)

Constructs and initializes the object.

Definition at line 2873 of file xtl_primary.h.

        : m_any_text( any_text_ )
    {
    }

---

Member Function Documentation

template<typename StringT >

template<typename SubstrT >

size_t cttl_impl::xtl_text_entity< StringT >::internal_find

(

SubstrT &

edge_

)

Implements search evaluation grammar evaluation algorithm.

Template Parameters:

SubstrT

specifies type of the parseable substring. Can be either cttl::const_edge or cttl::edge.

Parameters:

edge_

reference to the parseable substring.

Returns:

evaluation result: if algorithm succeeds, it returns absolute offset corresponding to the upper boundary of the matched entity. Otherwise, it returns SubstrT::string_T::npos, indicating that the evaluation algorithm has failed.

Definition at line 2941 of file xtl_primary.h.

    {
        typename SubstrT::string_T const& str = edge_.parent();
        size_t new_offset = str.find_first_of( m_any_text, edge_.first.offset() );
        if ( new_offset != SubstrT::string_T::npos ) {
            // successful find
            // set find starting position
            size_t match_offset = new_offset;

            // find ending position
            new_offset = str.find_first_not_of( m_any_text, new_offset );
            if ( new_offset == SubstrT::string_T::npos )
                new_offset = str.length();

            // set ending position
            edge_.first.offset( new_offset );
            CTTL_TRACE_TEXT_RESULT( true, '$', m_any_text.c_str() );
            return match_offset;
        }

        CTTL_TRACE_TEXT_RESULT( false, '$', m_any_text.c_str() );
        return SubstrT::string_T::npos;
    }

template<typename StringT >

template<typename SubstrT >

size_t cttl_impl::xtl_text_entity< StringT >::internal_match

(

SubstrT &

edge_

)

Implements match evaluation grammar evaluation algorithm.

Template Parameters:

SubstrT

specifies type of the parseable substring. Can be either cttl::const_edge or cttl::edge.

Parameters:

edge_

reference to the parseable substring.

Returns:

evaluation result: if algorithm succeeds, it returns absolute offset corresponding to the upper boundary of the matched entity. Otherwise, it returns SubstrT::string_T::npos, indicating that the evaluation algorithm has failed.

Definition at line 2899 of file xtl_primary.h.

    {
        typename SubstrT::string_T const& str = edge_.parent();
        if ( m_any_text.find( str[ edge_.first.offset() ] ) != SubstrT::string_T::npos ) {
            // successful match
            // set match starting position
            size_t match_offset = edge_.first.offset();

            // find ending position
            size_t new_offset = str.find_first_not_of( m_any_text, edge_.first.offset() );
            if ( new_offset == SubstrT::string_T::npos )
                new_offset = str.length();

            // set match ending position
            edge_.first.offset( new_offset );
            CTTL_TRACE_TEXT_RESULT( true, '$', m_any_text.c_str() );
            return match_offset;
        }

        CTTL_TRACE_TEXT_RESULT( false, '$', m_any_text.c_str() );
        return SubstrT::string_T::npos;
    }

---

The documentation for this class was generated from the following file:

• xtl_primary.h