CP::DetailSelectionExprParser::Separator Class Reference

Separator to be used in a boost::tokenizer. More...

#include <SelectionExprParser.h>

Collaboration diagram for CP::DetailSelectionExprParser::Separator:

Public Member Functions
bool	operator() (std::string::const_iterator &next, const std::string::const_iterator &end, std::string &tok) const
	Extracts the subsequent token from the input string iterator. More...
void	reset ()
	Optional state reset method, does nothing. More...

Detailed Description

Separator to be used in a boost::tokenizer.

Definition at line 22 of file SelectionExprParser.h.

Member Function Documentation

operator()()

bool CP::DetailSelectionExprParser::Separator::operator()	(	std::string::const_iterator &	next,
		const std::string::const_iterator &	end,
		std::string &	tok
	)		const

Extracts the subsequent token from the input string iterator.

Definition at line 21 of file SelectionExprParser.cxx.

                                                 {
  if (next == end) {
    return false;
  }
 
  static const std::regex base_regex(
      "^( ?((?:[^|&()! ]+)|(?:&&)|(?:!)|(?:\\()|(?:\\))|(?:\\|\\|))).*");
  std::smatch m;
 
  if (std::regex_match(next, end, m, base_regex)) {
    tok = m[2].str();
    next += m[1].length();
  } else {
    std::smatch m2;
    static const std::regex space_re{"^ +$"};
    if (std::regex_match(next, end, m, space_re)) {
      // only spaces left, we're done
      return false;
    }
    throw std::runtime_error("Cannot tokenize: '" + std::string(next, end) +
                             "'");
  }
  return true;
}

reset()

void CP::DetailSelectionExprParser::Separator::reset ( )

inline

Optional state reset method, does nothing.

Definition at line 30 of file SelectionExprParser.h.

{}

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

• SelectionExprParser.h
• SelectionExprParser.cxx