variable.cpp

LL1通用语法分析器

/************************************************************************
                        Copyright IBMTC Written by Xinxi Wang
**************************************************************************/
#include <iostream>
#include "Variable.h"
using namespace std;


Variable::Variable()
{
}


Variable::Variable (const Variable& v)
{
    name = v.name;
}


/**
 * @param  name
 */
Variable::Variable (string name ) : name(name)
{
}


/**
 * @return Type
 */
Type Variable::getType ( ) const 
{
    return VARIABLE;
}


/**
 * @return bool
 * @param  other
 */
bool Variable::operator== (const Token& other ) const 
{
    if(getType() != other.getType())
        return false;
    const Variable & v = dynamic_cast<const Variable &>(other);
    return v.getName() == name;
}


/**
 * @return string
 */
string Variable::getName ( ) const 
{
    return name;
}


/**
 */
 Variable::~Variable ( )
{

}


/**
 * @brief 判断是否为变量名字
 */
bool Variable::isVariable (const string& v)
{
    for(string::const_iterator it = v.begin(); it != v.end(); it++)
        if(!isupper(*it))
            return false;
    return true;
}


/**
 * 拷贝
 */
Token *Variable::clone() const
{
    return new Variable(*this);
}


void Variable::print () const
{
    cout << name;
}


bool Variable::operator<(const Token & other) const
{
    if(getType() < other.getType())
        return true;
    else if(getType() > other.getType())
        return false;
    
    return name < dynamic_cast<const Variable &>(other).name;
}