Ben Konyi
c262cbd414
This reverts commit ddd83d256f.
Reason for revert: Causing build failures in the Flutter engine, blocking the SDK roll. Build error:
org-dartlang-sdk:///third_party/dart/runtime/lib/ffi_patch.dart:76:3: Error: Type 'TypedData' not found.
TypedData asExternalTypedData({int count: 1}) =>
^^^^^^^^^
Original change's description:
> [vm/ffi] Enable creating an ExternalTypedData from a Pointer.
>
> Fixes dartbug.com/37738
>
> Change-Id: I65c6741978d36cd1c255039a4dd8a06190ea4366
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/111736
> Commit-Queue: Samir Jindel <sjindel@google.com>
> Reviewed-by: Daco Harkes <dacoharkes@google.com>
TBR=vegorov@google.com,sjindel@google.com,dacoharkes@google.com
Change-Id: I90a9cb5e2894c0bc064e620cef0a0f51505ac05d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112047
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
71 lines
2.3 KiB
Dart
71 lines
2.3 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "dart:_internal" show patch;
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@patch
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int sizeOf<T extends NativeType>() native "Ffi_sizeOf";
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Pointer<T> _allocate<T extends NativeType>(int count) native "Ffi_allocate";
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Pointer<T> _fromAddress<T extends NativeType>(int ptr) native "Ffi_fromAddress";
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// The real implementation of this function (for interface calls) lives in
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// BuildFfiAsFunctionCall in the Kernel frontend. No calls can actually reach
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// this function.
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DS _asFunctionInternal<DS extends Function, NS extends Function>(
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Pointer<NativeFunction<NS>> ptr) native "Ffi_asFunctionInternal";
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@patch
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@pragma("vm:entry-point")
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class Pointer<T extends NativeType> {
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@patch
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factory Pointer.allocate({int count: 1}) => _allocate<T>(count);
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@patch
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factory Pointer.fromAddress(int ptr) => _fromAddress(ptr);
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@patch
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static Pointer<NativeFunction<T>> fromFunction<T extends Function>(
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@DartRepresentationOf("T") Function f,
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Object exceptionalReturn) native "Ffi_fromFunction";
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// TODO(sjindel): When NNBD is available, we should change `value` to be
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// non-null.
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@patch
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void store(Object value) native "Ffi_store";
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@patch
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R load<R>() native "Ffi_load";
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@patch
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int get address native "Ffi_address";
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// Note this could also be implmented without an extra native as offsetBy
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// (elementSize()*index). This would be 2 native calls rather than one. What
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// would be better?
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@patch
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Pointer<T> elementAt(int index) native "Ffi_elementAt";
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// Note this could also be implmented without an extra native as
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// fromAddress(address). This would be 2 native calls rather than one.
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// What would be better?
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@patch
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Pointer<T> offsetBy(int offsetInBytes) native "Ffi_offsetBy";
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// Note this could also be implemented without an extra native as
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// fromAddress(address). This would be 2 native calls rather than one.
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// What would be better?
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@patch
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Pointer<U> cast<U extends NativeType>() native "Ffi_cast";
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@patch
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R asFunction<R extends Function>() {
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throw UnsupportedError("Pointer.asFunction cannot be called dynamically.");
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}
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@patch
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void free() native "Ffi_free";
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}
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