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// Copyright 2014 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FETCH_BODY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FETCH_BODY_H_
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class BodyStreamBuffer;
class ExceptionState;
class ExecutionContext;
class ReadableStream;
class ScriptState;
// This class represents Body mix-in defined in the fetch spec
// https://fetch.spec.whatwg.org/#body-mixin.
//
// Note: This class has body stream and its predicate whereas in the current
// spec only Response has it and Request has a byte stream defined in the
// Encoding spec. The spec should be fixed shortly to be aligned with this
// implementation.
class CORE_EXPORT Body : public ScriptWrappable,
public ActiveScriptWrappable<Body>,
public ExecutionContextClient {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(Body);
public:
enum class BodyUsed { kUsed, kUnused, kBroken };
enum class BodyLocked { kLocked, kUnlocked, kBroken };
explicit Body(ExecutionContext*);
ScriptPromise arrayBuffer(ScriptState*, ExceptionState&);
ScriptPromise blob(ScriptState*, ExceptionState&);
ScriptPromise formData(ScriptState*, ExceptionState&);
ScriptPromise json(ScriptState*, ExceptionState&);
ScriptPromise text(ScriptState*, ExceptionState&);
ReadableStream* body();
virtual BodyStreamBuffer* BodyBuffer() = 0;
virtual const BodyStreamBuffer* BodyBuffer() const = 0;
// This should only be called from the generated bindings. All other code
// should use IsBodyUsed() instead.
bool bodyUsed(ExceptionState& exception_state) {
return IsBodyUsed(exception_state) == BodyUsed::kUsed;
}
// Returns kUsed, kUnused or kBroken. kBroken implies there is an exception
// pending and the caller should return to JavaScript immediately.
virtual BodyUsed IsBodyUsed(ExceptionState&);
// Returns kLocked, kUnlocked or kBroken. kBroken implies there is an
// exception pending and the caller should return to JavaScript immediately.
BodyLocked IsBodyLocked(ExceptionState&);
// ScriptWrappable override.
bool HasPendingActivity() const override;
void Trace(Visitor* visitor) override {
ScriptWrappable::Trace(visitor);
ExecutionContextClient::Trace(visitor);
}
protected:
// A version of IsBodyUsed() which catches exceptions and returns
// false. Should never be used outside DCHECK().
virtual bool IsBodyUsedForDCheck(ExceptionState& exception_state);
private:
// TODO(e_hakkinen): Fix |MimeType()| to always contain parameters and
// remove |ContentType()|.
virtual String ContentType() const = 0;
virtual String MimeType() const = 0;
// Body consumption algorithms will reject with a TypeError in a number of
// error conditions. This method wraps those up into one call which throws
// an exception if consumption cannot proceed. The caller must check
// |exception_state| on return.
void RejectInvalidConsumption(ScriptState*, ExceptionState& exception_state);
DISALLOW_COPY_AND_ASSIGN(Body);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_FETCH_BODY_H_
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