PorygonLang/src/Evaluator/EvalValues/StringEvalValue.hpp

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#ifndef PORYGONLANG_STRINGEVALVALUE_HPP
#define PORYGONLANG_STRINGEVALVALUE_HPP
#include <string>
#include "EvalValue.hpp"
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#include "../../Utilities/HashedString.hpp"
using namespace std;
class StringEvalValue : public EvalValue{
u16string _value;
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size_t _hash;
public:
explicit StringEvalValue(u16string s){
_value = move(s);
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_hash = HashedString::ConstHash (_value.c_str());
}
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const TypeClass GetTypeClass() const final{
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return TypeClass ::String;
}
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const bool operator ==(EvalValue* b) const final{
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if (b->GetTypeClass() != TypeClass::String)
return false;
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return this->_hash == b->GetHashCode();
};
const u16string* EvaluateString() const final{
return &_value;
}
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const shared_ptr<EvalValue> Clone() const final{
return make_shared<StringEvalValue>(_value);
}
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const shared_ptr<EvalValue> IndexValue(EvalValue* val) const final{
// Porygon is 1-indexed, so we convert to that.
auto l = val->EvaluateInteger() - 1;
return make_shared<StringEvalValue>(u16string(1, _value[l]));
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}
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const std::size_t GetHashCode() const final{
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return _hash;
}
};
#endif //PORYGONLANG_STRINGEVALVALUE_HPP