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// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
* QtMips - MIPS 32-bit Architecture Subset Simulator
*
* Implemented to support following courses:
*
* B35APO - Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b35apo
*
* B4M35PAP - Advanced Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
*
* Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
* Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
*
* Faculty of Electrical Engineering (http://www.fel.cvut.cz)
* Czech Technical University (http://www.cvut.cz/)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
******************************************************************************/
#ifndef FIXMATHEVAL_H
#define FIXMATHEVAL_H
#include <QString>
namespace fixmatheval {
typedef std::int64_t FmeValue;
class FmeSymbolDb {
public:
virtual ~FmeSymbolDb();
virtual bool getValue(FmeValue &value, QString name) = 0;
};
class FmeNode {
public:
FmeNode(int priority);
virtual ~FmeNode();
virtual bool eval(FmeValue &value, FmeSymbolDb *symdb, QString &error) = 0;
virtual bool insert(FmeNode *node);
virtual FmeNode *child();
virtual QString dump() = 0;
int priority();
private:
int prio;
};
class FmeNodeConstant : public FmeNode {
public:
FmeNodeConstant(FmeValue value);
virtual ~FmeNodeConstant();
virtual bool eval(FmeValue &value, FmeSymbolDb *symdb, QString &error) override;
virtual QString dump() override;
private:
FmeValue value;
};
class FmeNodeSymbol : public FmeNode {
public:
FmeNodeSymbol(QString &name);
virtual ~FmeNodeSymbol();
virtual bool eval(FmeValue &value, FmeSymbolDb *symdb, QString &error) override;
virtual QString dump() override;
private:
QString name;
};
class FmeNodeUnaryOp : public FmeNode {
public:
FmeNodeUnaryOp(int priority, FmeValue (*op)(FmeValue &a));
virtual ~FmeNodeUnaryOp();
virtual bool eval(FmeValue &value, FmeSymbolDb *symdb, QString &error) override;
virtual bool insert(FmeNode *node) override;
virtual FmeNode *child() override;
virtual QString dump() override;
private:
FmeValue (*op)(FmeValue &a);
FmeNode *operand_a;
};
class FmeNodeBinaryOp : public FmeNode {
public:
FmeNodeBinaryOp(int priority, FmeValue (*op)(FmeValue &a, FmeValue &b), FmeNode *left);
virtual ~FmeNodeBinaryOp();
virtual bool eval(FmeValue &value, FmeSymbolDb *symdb, QString &error) override;
virtual bool insert(FmeNode *node) override;
virtual FmeNode *child() override;
virtual QString dump() override;
private:
FmeValue (*op)(FmeValue &a, FmeValue &b);
FmeNode *operand_a;
FmeNode *operand_b;
};
class FmeExpression : public FmeNode {
public:
FmeExpression();
virtual ~FmeExpression();
virtual bool parse(QString &expression, QString &error);
virtual bool eval(FmeValue &value, FmeSymbolDb *symdb, QString &error) override;
virtual bool insert(FmeNode *node) override;
virtual FmeNode *child() override;
virtual QString dump() override;
private:
FmeNode *root;
};
}
#endif /*FIXMATHEVAL*/
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