pni::io::parser< T, ITERT > Class Template Reference

parser for primitive types More...

#include <parser.hpp>

Collaboration diagram for pni::io::parser< T, ITERT >:

Public Types
typedef ITERT	iterator_type
	iterator type More...
typedef T	result_type
	result type of the parsing process More...
typedef boost::spirit::qi::expectation_failure < iterator_type >	expectation_error
	parser exception type More...

Public Member Functions
result_type	operator() (const pni::core::string &data) const
	parser primitive type More...

Private Types
typedef conversion_trait < result_type >	trait_type
	conversion trait type More...
typedef trait_type::read_type	read_type
	type used for reading the data More...

Private Attributes
get_rule_type< iterator_type, read_type >::type	_rule
	rule which will be used to read the data More...

Detailed Description

template<typename T, typename ITERT = pni::core::string::const_iterator>
class pni::io::parser< T, ITERT >

This version of the parser structure provides a default parsing implementation for primitive types. The aim of this class is to hide all the complexity of the boost::spirit::qi parsers. In addition it catches all spirit exceptions and wraps them into a parser_error exception.

Use this parser to parse a single primitive value from a string. The input data must be trimmed - so no leading or trailing blanks are allowed. The string is supposed to end with the last character assembling the value to parse.

By default the output iterator is a const string iterator.

Template Parameters

T	primitive data type
ITERT	iterator type

Member Typedef Documentation

template<typename T, typename ITERT = pni::core::string::const_iterator>

typedef boost::spirit::qi::expectation_failure<iterator_type> pni::io::parser< T, ITERT >::expectation_error

template<typename T, typename ITERT = pni::core::string::const_iterator>

typedef ITERT pni::io::parser< T, ITERT >::iterator_type

template<typename T, typename ITERT = pni::core::string::const_iterator>

typedef trait_type::read_type pni::io::parser< T, ITERT >::read_type

private

template<typename T, typename ITERT = pni::core::string::const_iterator>

typedef T pni::io::parser< T, ITERT >::result_type

template<typename T, typename ITERT = pni::core::string::const_iterator>

typedef conversion_trait<result_type> pni::io::parser< T, ITERT >::trait_type

private

Member Function Documentation

template<typename T, typename ITERT = pni::core::string::const_iterator>

result_type pni::io::parser< T, ITERT >::operator() ( const pni::core::string &  data ) const

inline

Parses the input string and returns an instance of a primitive type. In case of errors parser_error is thrown.

Exceptions

parser_error

in case of any problems

Parameters

data	the string with input data

Returns

instance of the primitive type

Field Documentation

template<typename T, typename ITERT = pni::core::string::const_iterator>

get_rule_type<iterator_type,read_type>::type pni::io::parser< T, ITERT >::_rule

private

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

• parsers/parser.hpp