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FailureOr.h
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FailureOr.h
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#pragma once
#include "Forward.h"
#include "ImmutableString.h"
#include "SharedEnums.h"
#include "Value.h"
//Used in some contexts to store a runtime when the interpreter maybe not be available
//(or might not exist, as is the case during const-folding)
struct FailureOr
{
struct Failure
{
ErrorCode code;
ImmutableString what;
};
bool didError;
std::variant<Value, Failure> data;
FailureOr(Value&& ret)
:didError(false)
,data(ret)
{
}
FailureOr(const ImmutableString& _what)
:didError(true)
,data(Failure{ ErrorCode::Unknown, _what })
{
}
FailureOr(ErrorCode _code, const ImmutableString& _what)
:didError(true)
{
Failure fail = { _code, _what };
data = std::variant<Value, Failure>(fail);
}
Value get_or_throw(Interpreter&);
Value must_get();
};