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Token.hpp

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+#pragma once
+#include <math.h>
+
+/////////////////////////////////////////////////////
+/// \brief Abstract Token base class
+///
+/// A token contains an operation - this means it will
+/// hold two numbers, as well as their result after
+/// the according operation.
+///
+/////////////////////////////////////////////////////
+
+class Token
+{
+public:
+	virtual bool nonCharToken() = 0;
+};
+
+
+
+
+
+
+
+
+class NonChar : public Token
+{
+public:
+	bool nonCharToken() override { return true; }
+	double value() { return result; }
+
+protected:
+	double a, b, result;
+};
+
+
+
+class Symbol : public Token
+{
+public:
+	bool nonCharToken() override { return false; }
+	virtual bool isNumber() = 0;
+	virtual double value() = 0;
+};
+
+
+
+
+class Operator : public Symbol
+{
+public:
+	Operator(char _c)
+	{
+		c = _c;
+	}
+
+	bool isNumber() override { return false; }
+	double value() { return c; }
+
+private:
+	char c;
+};
+
+
+class Number : public Symbol
+{
+public:
+	Number(double _i)
+	{
+		i = _i;
+	}
+
+	bool isNumber() override { return true; }
+	double value() { return i; }
+
+private:
+	double i;
+};
+
+
+
+
+class AddToken : public NonChar
+{
+public:
+	AddToken(double _a, double _b)
+	{
+		a = _a;
+		b = _b;
+
+		result = a + b;
+	}
+};
+
+
+
+class SubToken : public NonChar
+{
+public:
+	SubToken(double _a, double _b)
+	{
+		a = _a;
+		b = _b;
+
+		result = a - b;
+	}
+};
+
+
+
+class MulToken : public NonChar
+{
+public:
+	MulToken(double _a, double _b)
+	{
+		a = _a;
+		b = _b;
+
+		result = a * b;
+	}
+};
+
+
+class DivToken : public NonChar
+{
+public:
+	DivToken(double _a, double _b)
+	{
+		a = _a;
+		b = _b;
+
+		result = a / b;
+	}
+};
+
+
+
+class ExpToken : public NonChar
+{
+public:
+	ExpToken(double _a, double _b)
+	{
+		a = _a;
+		b = _b;
+
+		result = pow(a, b);
+	}
+};
+
+
+class RootToken : public NonChar
+{
+public:
+	RootToken(double _a, double _b)
+	{
+		a = _a;
+		b = _b;
+
+		result = pow(b, 1.0 / a);
+	}
+};