Samir Jindel
fc6cb0ac21
See dartbug.com/37229 for details. Change-Id: I63490e41c512ffc9312803985a6f6d4be1586c0a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/101291 Commit-Queue: Samir Jindel <sjindel@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com> Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
63 lines
1.9 KiB
Dart
63 lines
1.9 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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@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>() native "Ffi_asFunction";
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@patch
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void free() native "Ffi_free";
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}
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