luau/Analysis/include/Luau/RecursionCounter.h
vegorov-rbx be52bd91e4
Sync to upstream/release/558 (#796)
* Fixed garbage data in module scopes when type graph is not retained
* LOP_MOVE with the same source and target registers is no longer
generated (Fixes https://github.com/Roblox/luau/issues/793)
2023-01-06 13:14:35 -08:00

52 lines
930 B
C++

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#pragma once
#include "Luau/Common.h"
#include "Luau/Error.h"
#include <stdexcept>
#include <exception>
namespace Luau
{
struct RecursionLimitException : public InternalCompilerError
{
RecursionLimitException()
: InternalCompilerError("Internal recursion counter limit exceeded")
{
}
};
struct RecursionCounter
{
RecursionCounter(int* count)
: count(count)
{
++(*count);
}
~RecursionCounter()
{
LUAU_ASSERT(*count > 0);
--(*count);
}
protected:
int* count;
};
struct RecursionLimiter : RecursionCounter
{
RecursionLimiter(int* count, int limit)
: RecursionCounter(count)
{
if (limit > 0 && *count > limit)
{
throw RecursionLimitException();
}
}
};
} // namespace Luau