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https://github.com/RGBCube/serenity
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76b9d06b19
ThrowableStringBuilder is a thin wrapper around StringBuilder to map results from the try_* methods to a throw completion. This will let us try to throw on OOM conditions rather than just blowing up.
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Utf16View.h>
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#include <LibJS/Runtime/ThrowableStringBuilder.h>
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namespace JS {
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ThrowableStringBuilder::ThrowableStringBuilder(VM& vm)
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: m_vm(vm)
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{
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}
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ThrowCompletionOr<void> ThrowableStringBuilder::append(char ch)
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{
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if (try_append(ch).is_error())
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return m_vm.throw_completion<InternalError>(ErrorType::NotEnoughMemoryToAllocate, length() + 1);
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return {};
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}
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ThrowCompletionOr<void> ThrowableStringBuilder::append(StringView string)
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{
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if (try_append(string).is_error())
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return m_vm.throw_completion<InternalError>(ErrorType::NotEnoughMemoryToAllocate, length() + string.length());
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return {};
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}
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ThrowCompletionOr<void> ThrowableStringBuilder::append(Utf16View const& string)
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{
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if (try_append(string).is_error())
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return m_vm.throw_completion<InternalError>(ErrorType::NotEnoughMemoryToAllocate, length() + (string.length_in_code_units() * 2));
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return {};
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}
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ThrowCompletionOr<void> ThrowableStringBuilder::append_code_point(u32 value)
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{
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if (auto result = try_append_code_point(value); result.is_error())
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return m_vm.throw_completion<InternalError>(ErrorType::NotEnoughMemoryToAllocate, length() + sizeof(value));
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return {};
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}
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}
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