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#ifndef PARSER_SRC_NODES_H_
#define PARSER_SRC_NODES_H_
#include <map>
#include <string>
namespace SimpleParser {
enum class TokenType;
typedef std::map<std::string, double> ConstantMap;
class Node {
public:
virtual ~Node() {};
virtual double solve() const = 0;
virtual std::string print() const = 0;
virtual bool hasChildren() const;
virtual bool isParentOf(Node*const) const;
};
class OperatorNode: public Node {
public:
explicit OperatorNode(TokenType);
virtual double solve() const;
virtual std::string print() const;
virtual bool hasChildren() const;
virtual bool isParentOf(Node*const) const;
TokenType token() const;
void setChildren(Node*const, Node*const);
private:
const TokenType operator_;
Node* right_;
Node* left_;
};
class OperandNode: public Node {
public:
explicit OperandNode(double);
virtual double solve() const;
virtual std::string print() const;
private:
const double value_;
};
class ConstantNode: public Node {
public:
ConstantNode(const std::string&, const ConstantMap*);
virtual double solve() const;
virtual std::string print() const;
private:
const std::string identifier_;
const ConstantMap* const constants_;
};
}
#endif // PARSER_SRC_NODES_H_
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