regex.cpp

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#include "regex.h"

namespace YAML_PM
{
        // 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(std::size_t 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;
        }       
}