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Copy pathOperation.cpp
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66 lines (59 loc) · 1.64 KB
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#include "Operation.hpp"
#include "tokenize/LexicalAnalyzer.hpp"
#include "math.h"
#include "InvalidFormulaException.hpp"
Operation::Operation(char symbol) : symbol(symbol) {
switch (symbol) {
case '+':
case '-':
precedence = 1;
break;
case '*':
case '/':
precedence = 2;
break;
case '^':
precedence = 3;
break;
default:
throw InvalidFormulaException("Illegal char " + std::string(1, symbol));
}
}
int Operation::getPrecedence() const {
return precedence;
}
long double Operation::resolve(std::map<std::string, long double> vars, std::shared_ptr<Expression> op1,
std::shared_ptr<Expression> op2) const {
switch (symbol) {
case '+':
return op1->resolve(vars) + op2->resolve(vars);
case '-':
return op1->resolve(vars) - op2->resolve(vars);
case '*':
return op1->resolve(vars) * op2->resolve(vars);
case '/':
return op1->resolve(vars) / op2->resolve(vars);
case '^':
return powl(op1->resolve(vars), op2->resolve(vars));
default:
throw InvalidFormulaException("Illegal symbol " + std::string(1, symbol));
}
}
bool Operation::openForInput() const {
return false;
}
std::string Operation::toString() const {
return std::string(1, symbol);
}
bool Operation::match(char symbol) {
switch (symbol) {
case '+':
case '-':
case '*':
case '/':
case '^':
return true;
default:
return false;
}
}