operand.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef MEDIASTATION_MEDIASCRIPT_OPERAND_H
#define MEDIASTATION_MEDIASCRIPT_OPERAND_H

#include "common/ptr.h"
#include "common/str.h"

#include "mediastation/mediascript/scriptconstants.h"
#include "mediastation/mediascript/variable.h"

namespace MediaStation {

class Asset;

class Operand {
public:
    Operand() : _type(kOperandTypeEmpty) {}
    Operand(OperandType type) : _type(type) {}

    OperandType getType() const {
        return _type;
    }

    void putInteger(int i);
    int getInteger();

    void putDouble(double d);
    double getDouble();

    void putString(Common::String *string);
    Common::String *getString();

    void putVariable(Variable *variable);
    Variable *getVariable();

    void putFunctionId(uint functionId);
    uint getFunctionId();

    void putMethodId(BuiltInMethod methodId);
    BuiltInMethod getMethodId();

    void putAsset(uint32 assetId);
    Asset *getAsset();
    uint32 getAssetId();

    void putCollection(Common::SharedPtr<Collection> collection);
    Common::SharedPtr<Collection> getCollection();

    Operand getLiteralValue() const;

    bool operator==(const Operand &other) const;
    bool operator<(const Operand &other) const;
    bool operator>(const Operand &other) const;

    bool operator||(const Operand &other) const;
    bool operator!() const;
    bool operator&&(const Operand &other) const;

    Operand operator+(const Operand &other) const;
    Operand operator-(const Operand &other) const;
    Operand operator*(const Operand &other) const;
    Operand operator/(const Operand &other) const;
    Operand operator%(const Operand &other) const;
    Operand operator-() const;

private:
    bool isInteger() { return getType() == kOperandTypeLiteral1 || getType() == kOperandTypeLiteral2; };
    bool isDouble() { return getType() == kOperandTypeFloat1 || getType() == kOperandTypeFloat2; };
    bool isNumber() { return isInteger() || isDouble(); };

    OperandType _type = kOperandTypeEmpty;
    union {
        uint assetId = 0;
        uint functionId;
        BuiltInMethod methodId;
        Common::String *string;
        Variable *variable;
        int i;
        double d;
    } _u;
    Common::SharedPtr<Collection> _collection;
};

} // End of namespace MediaStation

#endif