cttl_impl::xtl_char_begin< CharT > Class Template Reference
Implements behavior of begin(char), upper boundary of single character literal lexeme inside CTTL grammar expression. More...
#include <xtl_primary.h>
Inheritance diagram for cttl_impl::xtl_char_begin< CharT >:
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_char_begin (CharT char_) | |
| Constructs and initializes the object. | |
Detailed Description
template<typename CharT>
class cttl_impl::xtl_char_begin< CharT >
Implements behavior of begin(char), upper boundary of single character literal lexeme inside CTTL grammar expression.
- Template Parameters:
-
CharT specifies character type.
Definition at line 844 of file xtl_primary.h.
Constructor & Destructor Documentation
template<typename CharT >
| cttl_impl::xtl_char_begin< CharT >::xtl_char_begin | ( | CharT | char_ | ) |
Member Function Documentation
template<typename CharT >
template<typename SubstrT >
| size_t cttl_impl::xtl_char_begin< CharT >::internal_find | ( | SubstrT & | edge_ | ) |
Implements search evaluation grammar evaluation algorithm.
- Template Parameters:
-
SubstrT specifies type of the parseable substring. Can be either cttl::const_edgeorcttl::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 symbol. Otherwise, it returns
SubstrT::string_T::npos, indicating that the evaluation algorithm has failed.
Definition at line 912 of file xtl_primary.h.
00913 { 00914 size_t new_offset = edge_.parent().find( m_char, edge_.first.offset() ); 00915 if ( new_offset != SubstrT::string_T::npos ) { 00916 // successful find 00917 // set find ending position 00918 edge_.first.offset( new_offset ); 00919 CTTL_TRACE_TEXT_RESULT( true, m_char, "begin( char )" ); 00920 return new_offset; 00921 } 00922 00923 CTTL_TRACE_TEXT_RESULT( false, m_char, "begin( char )" ); 00924 return SubstrT::string_T::npos; 00925 }
template<typename CharT >
template<typename SubstrT >
| size_t cttl_impl::xtl_char_begin< CharT >::internal_match | ( | SubstrT & | edge_ | ) |
Implements match evaluation grammar evaluation algorithm.
- Template Parameters:
-
SubstrT specifies type of the parseable substring. Can be either cttl::const_edgeorcttl::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 symbol. Otherwise, it returns
SubstrT::string_T::npos, indicating that the evaluation algorithm has failed.
Definition at line 880 of file xtl_primary.h.
00881 { 00882 if ( edge_.parent()[ edge_.first.offset() ] == m_char ) { 00883 // successful match 00884 CTTL_TRACE_TEXT_RESULT( true, m_char, "begin( char )" ); 00885 // set match starting position 00886 return edge_.first.offset(); 00887 } 00888 00889 CTTL_TRACE_TEXT_RESULT( false, m_char, "begin( char )" ); 00890 return SubstrT::string_T::npos; 00891 }
The documentation for this class was generated from the following file:
