PorygonLang/src/Evaluator/EvalValues/EvalValue.hpp

#ifndef PORYGONLANG_EVALVALUE_HPP
#define PORYGONLANG_EVALVALUE_HPP

#include "../../ScriptType.hpp"
#include "../EvaluationException.hpp"
#include <string>
#include <sstream>
#include <memory>

class EvalValue{
public:
    EvalValue() = default;
    virtual ~EvalValue() = default;
    virtual const TypeClass GetTypeClass() const = 0;

    virtual const bool operator ==(EvalValue* b) const = 0;

    virtual const bool operator !=(EvalValue*b) const{
        return ! (this->operator==(b));
    }

    virtual const shared_ptr<EvalValue> Clone() const = 0;

    virtual const long EvaluateInteger() const{
        throw EvaluationException("Can't evaluate this EvalValue as integer.");
    }
    virtual const double EvaluateFloat() const{
        throw EvaluationException("Can't evaluate this EvalValue as float.");
    }
    virtual const bool EvaluateBool() const{
        throw EvaluationException("Can't evaluate this EvalValue as bool.");
    }
    virtual const std::u16string* EvaluateString() const {
        throw EvaluationException("Can't evaluate this EvalValue as string.");
    }

    virtual const std::size_t GetHashCode() const = 0;

    virtual const shared_ptr<EvalValue> IndexValue(EvalValue* val) const{
        throw EvaluationException("Can't index this EvalValue");
    }

    virtual const shared_ptr<EvalValue> IndexValue(uint32_t hash) const{
        throw EvaluationException("Can't index this EvalValue");
    }

    virtual void SetIndexValue(EvalValue *key, const shared_ptr<EvalValue>& value) const{
        throw EvaluationException("Can't index this EvalValue");
    }
};

class BooleanEvalValue : public EvalValue{
    const bool _value;
public:
    explicit BooleanEvalValue(bool val)
        : _value(val)
    {
    }

    const shared_ptr<EvalValue> Clone() const final{
        return make_shared<BooleanEvalValue>(_value);
    }

    const TypeClass GetTypeClass() const final{
        return TypeClass ::Bool;
    }

    const bool EvaluateBool() const final{
        return _value;
    }

    const bool operator ==(EvalValue* b) const final{
        if (b->GetTypeClass() != TypeClass::Bool)
            return false;
        return this->EvaluateBool() == b->EvaluateBool();
    };

    const std::size_t GetHashCode() const final{
        return _value;
    }
};

#endif //PORYGONLANG_EVALVALUE_HPP