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() = 0;

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

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

    virtual shared_ptr<EvalValue> Clone() = 0;

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

    virtual std::size_t GetHashCode() = 0;

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

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

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

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

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

    bool EvaluateBool() const final{
        return _value;
    }

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

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

#endif //PORYGONLANG_EVALVALUE_HPP