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/* PIA - Lenguajes Modernos de Programación
* FACULTAD DE CIENCIAS FÍSICO MATEMÁTICAS
* Luis Sebastián Martínez Vega - LCC */
#include <string>
#include "include/expressions.hpp"
#include "include/lexer.hpp"
using std::string;
Expression::Expression(Expression *left, Expression *right, token_type type)
: left(left), right(right), type(type) {}
const Expression *Expression::getLeft() const {
return left;
}
const Expression *Expression::getRight() const {
return right;
}
string Expression::getRepr() {
if(repr.empty())
setRepr();
return repr;
}
void Expression::setRepr() {
repr += '(';
if(getLeft() != NULL)
repr += left->getRepr();
switch(type) {
case sum:
repr += '+';
break;
case substraction:
repr += '-';
break;
case multiplication:
repr += '*';
break;
case division:
repr += '/';
break;
case power:
repr += '^';
break;
}
if(getRight() != NULL)
repr += right->getRepr();
repr += ')';
}
void Expression::delTree() {
if(getLeft() != NULL)
delete left;
if(getRight() != NULL)
delete right;
}
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