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#include "nodes.h"
#include "utils.h"
#include "tree.h"
#include "exceptions.h"
#include <cmath>
#include <sstream>
#include <limits>
namespace SimpleParser {
OperandNode::OperandNode(double value):
value_(value) { }
double OperandNode::solve() {
return this->value_;
}
NodeType OperandNode::getType() {
return NodeType::OPERAND;
}
std::string OperandNode::print() {
std::stringstream convertStream;
convertStream.precision(std::numeric_limits<double>::digits10);
convertStream << this->value_;
return convertStream.str();
}
OperatorNode::OperatorNode(TokenType token):
operator_(token) { }
double OperatorNode::solve() {
switch ( this->operator_ ) {
case TokenType::OPERATOR_MULTIPLY: {
return this->leftChild->solve() * this->rightChild->solve();
}
case TokenType::OPERATOR_PLUS: {
return this->leftChild->solve() + this->rightChild->solve();
}
case TokenType::OPERATOR_MINUS: {
return this->leftChild->solve() - this->rightChild->solve();
}
case TokenType::OPERATOR_POWER: {
return std::pow(
this->leftChild->solve(), this->rightChild->solve()
);
}
case TokenType::OPERATOR_DIVIDE: {
double rightChild = this->rightChild->solve();
if ( rightChild != 0 ) {
return this->leftChild->solve() / rightChild;
}
else {
throw divide_exception();
}
}
default: {
throw operator_exception();
}
}
}
NodeType OperatorNode::getType() {
return NodeType::OPERATOR;
}
std::string OperatorNode::print() {
switch ( this->operator_ ) {
case TokenType::OPERATOR_PLUS: {
return std::string(1, '+');
}
case TokenType::OPERATOR_MINUS: {
return std::string(1, '-');
}
case TokenType::OPERATOR_MULTIPLY: {
return std::string(1, '*');
}
case TokenType::OPERATOR_DIVIDE: {
return std::string(1, '/');
}
case TokenType::OPERATOR_POWER: {
return std::string(1, '^');
}
default: {
throw operator_exception();
}
}
}
TokenType OperatorNode::getToken() {
return this->operator_;
}
ConstantNode::ConstantNode(std::string identifier,
const ConstantMap* constants):
identifier_(identifier),
constants_(constants) { }
double ConstantNode::solve() {
if ( this->constants_ != nullptr ) {
try {
return this->constants_->at(this->identifier_);
}
catch ( std::out_of_range &e ) {
throw identifier_exception();
}
} else {
throw identifier_exception();
}
}
NodeType ConstantNode::getType() {
return NodeType::CONSTANT;
}
std::string ConstantNode::print() {
return this->identifier_;
}
}
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