regex.cpp

#include "crt.h"
#include "regex.h"

namespace YAML
{
	// constructors
	RegEx::RegEx(): m_op(REGEX_EMPTY)
	{
	}
	
	RegEx::RegEx(REGEX_OP op): m_op(op)
	{
	}
	
	RegEx::RegEx(char ch): m_op(REGEX_MATCH), m_a(ch)
	{
	}
	
	RegEx::RegEx(char a, char z): m_op(REGEX_RANGE), m_a(a), m_z(z)
	{
	}
	
	RegEx::RegEx(const std::string& str, REGEX_OP op): m_op(op)
	{
		for(unsigned i=0;i<str.size();i++)
			m_params.push_back(RegEx(str[i]));
	}
	
	// combination constructors
	RegEx operator ! (const RegEx& ex)
	{
		RegEx ret(REGEX_NOT);
		ret.m_params.push_back(ex);
		return ret;
	}
	
	RegEx operator || (const RegEx& ex1, const RegEx& ex2)
	{
		RegEx ret(REGEX_OR);
		ret.m_params.push_back(ex1);
		ret.m_params.push_back(ex2);
		return ret;
	}
	
	RegEx operator && (const RegEx& ex1, const RegEx& ex2)
	{
		RegEx ret(REGEX_AND);
		ret.m_params.push_back(ex1);
		ret.m_params.push_back(ex2);
		return ret;
	}
	
	RegEx operator + (const RegEx& ex1, const RegEx& ex2)
	{
		RegEx ret(REGEX_SEQ);
		ret.m_params.push_back(ex1);
		ret.m_params.push_back(ex2);
		return ret;
	}	
}