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LibJS: Add a fallible ThrowableStringBuilder::appendff
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@ -6,6 +6,7 @@
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#pragma once
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#include <AK/Format.h>
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#include <AK/StringBuilder.h>
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#include <AK/StringView.h>
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#include <LibJS/Forward.h>
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@ -25,6 +26,19 @@ public:
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ThrowCompletionOr<void> append_code_point(u32 value);
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ThrowCompletionOr<String> to_string() const;
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template<typename... Parameters>
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ThrowCompletionOr<void> appendff(CheckedFormatString<Parameters...>&& fmtstr, Parameters const&... parameters)
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{
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AK::VariadicFormatParams<AK::AllowDebugOnlyFormatters::No, Parameters...> variadic_format_params { parameters... };
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if (vformat(*this, fmtstr.view(), variadic_format_params).is_error()) {
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// The size returned here is a bit of an estimate, as we don't know what the final formatted string length would be.
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return m_vm.throw_completion<InternalError>(ErrorType::NotEnoughMemoryToAllocate, length() + fmtstr.view().length());
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}
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return {};
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}
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using AK::StringBuilder::is_empty;
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using AK::StringBuilder::string_view;
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using AK::StringBuilder::trim;
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