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#include "nodes.h"
#include "exceptions.h"
#include <cmath>
#include <sstream>
#include <limits>
namespace SimpleParser {
OperandNode::OperandNode(double val) {
this->value_ = val;
}
double OperandNode::solve() {
return this->value_;
}
NodeType OperandNode::getType() {
return OPERAND_NODE;
}
std::string OperandNode::print() {
std::stringstream convertStream;
convertStream.precision(std::numeric_limits<double>::digits10);
convertStream << this->value_;
return convertStream.str();
}
OperatorNode::OperatorNode(char op) {
this->function_ = op;
}
double OperatorNode::solve() {
switch ( this->function_ ) {
case '*': {
return this->leftChild->solve() * this->rightChild->solve();
}
case '/': {
double rightChild = this->rightChild->solve();
if ( rightChild != 0 ) {
return this->leftChild->solve() / rightChild;
}
else {
throw divide_exception();
}
}
case '+': {
return this->leftChild->solve() + this->rightChild->solve();
}
case '-': {
return this->leftChild->solve() - this->rightChild->solve();
}
case '^': {
return std::pow( this->leftChild->solve(), this->rightChild->solve() );
}
default: {
throw operator_exception();
}
}
}
NodeType OperatorNode::getType() {
return OPERATOR_NODE;
}
std::string OperatorNode::print() {
return std::string(1, this->function_);
}
char OperatorNode::getFunction() {
return this->function_;
}
}
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