qt_interpreter.hpp

// File: qt_interpreter.hpp
// Author: Samuel McFalls

#ifndef QT_INTERPRETER_H
#define QT_INTERPRETER_H

#include <QObject>
#include <QGraphicsItem>

#include "interpreter.hpp"

class QtInterpreter: public QObject {
Q_OBJECT

public:

	// Default construct an QtInterpreter with the default environment and an empty AST
	QtInterpreter(QObject * parent = nullptr);

signals:

	// a signal emitting a graphic to be drawn as a pointer
	void drawGraphic(QGraphicsItem * item);

	// a signal emitting an informational message
	void info(QString message);

	// a signal emitting an error message
	void error(QString message);

public slots:

	// a public slot that accepts and expression string and parses/evaluates it
	void parseAndEvaluate(QString entry);

private:

	Interpreter interp;
	void createGraphics(std::vector<Atom> item);

	QString boolString(Expression exp);
	QString numberString(Expression exp);
	QString pointString(Expression exp);
	QString lineString(Expression exp);
	QString arcString(Expression exp);

};

#endif