| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Functions used to build transferable streams. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_TRANSFERABLE_STREAMS_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_TRANSFERABLE_STREAMS_H_ |
| |
| #include <memory> |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| |
| namespace blink { |
| |
| class ExceptionState; |
| class MessagePort; |
| class ReadableStream; |
| class ReadableStreamTransferringOptimizer; |
| class ScriptState; |
| class UnderlyingSourceBase; |
| class WritableStream; |
| class WritableStreamTransferringOptimizer; |
| |
| // Creates the writable side of a cross-realm identity transform stream, using |
| // |port| for communication. |port| must be entangled with another MessagePort |
| // which is passed to CreateCrossRealmTransformReadable(). |
| // Equivalent to SetUpCrossRealmTransformWritable in the standard: |
| // https://streams.spec.whatwg.org/#abstract-opdef-setupcrossrealmtransformwritable |
| CORE_EXPORT WritableStream* CreateCrossRealmTransformWritable( |
| ScriptState*, |
| MessagePort* port, |
| std::unique_ptr<WritableStreamTransferringOptimizer> optimizer, |
| ExceptionState&); |
| |
| // Creates the readable side of a cross-realm identity transform stream. |port| |
| // is used symmetrically with CreateCrossRealmTransformWritable(). |
| // Equivalent to SetUpCrossRealmTransformReadable in the standard: |
| // https://streams.spec.whatwg.org/#abstract-opdef-setupcrossrealmtransformreadable |
| CORE_EXPORT ReadableStream* CreateCrossRealmTransformReadable( |
| ScriptState*, |
| MessagePort* port, |
| std::unique_ptr<ReadableStreamTransferringOptimizer> optimizer, |
| ExceptionState&); |
| |
| // Creates a ReadableStream that is identical to the concatenation of |
| // a ReadableStream created with `source1` and a ReadableStream created with |
| // `source2`. |
| // The implementation is optimized with an assumption that `source2` is (much) |
| // longer than `source1`. |
| CORE_EXPORT ReadableStream* CreateConcatenatedReadableStream( |
| ScriptState*, |
| UnderlyingSourceBase* source1, |
| UnderlyingSourceBase* source2); |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_TRANSFERABLE_STREAMS_H_ |