742f6f7e26
This is not documented yet, but the preferred style is getting both upfront instead of inlining various kinds of calls in places that use the realm and vm.
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
/*
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* Copyright (c) 2023, Matthew Olsson <mattco@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 <LibJS/Runtime/VM.h>
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#include <LibWeb/Streams/AbstractOperations.h>
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#include <LibWeb/Streams/UnderlyingSource.h>
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#include <LibWeb/WebIDL/CallbackType.h>
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namespace Web::Streams {
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JS::ThrowCompletionOr<UnderlyingSource> UnderlyingSource::from_value(JS::VM& vm, JS::Value value)
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{
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if (!value.is_object())
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return UnderlyingSource {};
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auto& object = value.as_object();
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UnderlyingSource underlying_source {
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.start = TRY(property_to_callback(vm, value, "start")),
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.pull = TRY(property_to_callback(vm, value, "pull")),
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.cancel = TRY(property_to_callback(vm, value, "cancel")),
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.type = {},
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.auto_allocate_chunk_size = {},
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};
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if (TRY(object.has_property("type"))) {
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auto type_value = TRY(TRY(object.get("type")).to_string(vm));
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if (type_value == "bytes"sv) {
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underlying_source.type = ReadableStreamType::Bytes;
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} else {
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return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Unknown stream type '{}'", type_value));
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}
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}
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if (TRY(object.has_property("autoAllocateChunkSize")))
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underlying_source.auto_allocate_chunk_size = TRY(TRY(object.get("autoAllocateChunkSize")).to_bigint_int64(vm));
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return underlying_source;
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}
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}
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