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https://github.com/RGBCube/serenity
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5caab0148c
This is very similar to AK::TemporaryChange (and in fact replaces one use of it), but since we can't directly set VM's m_exception from outside of the VM, we need something more sophisticated. Sometimes we need to temporarily remove the stored exception for some other operation to succeed (e.g. anything that uses call(), as well as get_without_side_effects()) and later restore it - the boilerplate code required for this is annoying enough to justify a helper.
34 lines
599 B
C++
34 lines
599 B
C++
/*
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* Copyright (c) 2021, Linus Groh <mail@linusgroh.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibJS/Runtime/Exception.h>
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#include <LibJS/Runtime/VM.h>
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namespace JS {
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class TemporaryClearException {
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public:
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explicit TemporaryClearException(VM& vm)
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: m_vm(vm)
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, m_previous_exception(vm.exception())
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{
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m_vm.clear_exception();
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}
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~TemporaryClearException()
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{
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if (m_previous_exception)
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m_vm.set_exception(*m_previous_exception);
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}
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private:
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VM& m_vm;
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Exception* m_previous_exception;
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};
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}
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