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Fixes #993. More Union tests for FFI library added
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sgrekhov
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Jul 29, 2021
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// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file | ||
// for details. All rights reserved. Use of this source code is governed by a | ||
// BSD-style license that can be found in the LICENSE file. | ||
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/// @assertion | ||
/// const Array<T extends NativeType>( | ||
/// int dimension1, | ||
/// [int dimension2, | ||
/// int dimension3, | ||
/// int dimension4, | ||
/// int dimension5] | ||
/// ) | ||
/// Const constructor to specify Array dimensions in Structs. | ||
/// | ||
/// class MyStruct extends Struct { | ||
/// @Array(8) | ||
/// external Array<Uint8> inlineArray; | ||
/// | ||
/// @Array(2, 2, 2) | ||
/// external Array<Array<Array<Uint8>>> threeDimensionalInlineArray; | ||
/// } | ||
/// Do not invoke in normal code. | ||
/// | ||
/// @description Checks that this class represents a fixed-size array of Pointer | ||
/// @author sgrekhov@unipro.ru | ||
import "dart:ffi"; | ||
import "package:ffi/ffi.dart"; | ||
import "../../../Utils/expect.dart"; | ||
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class Coord extends Union { | ||
@Double() | ||
external double x; | ||
@Double() | ||
external double y; | ||
} | ||
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class MyStruct extends Struct { | ||
@Array(2) | ||
external Array<Coord> a0; | ||
} | ||
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void main() { | ||
final pointer = calloc<MyStruct>(); | ||
try { | ||
final array = pointer.ref.a0; | ||
for (int i = 0; i < 2; i++) { | ||
Expect.equals(0, array[i].x); | ||
Expect.equals(0, array[i].y); | ||
array[i].x = 42; | ||
array[i].y = 3.14; | ||
Expect.equals(3.14, array[i].x); | ||
Expect.equals(3.14, array[i].y); | ||
array[i].x = 42; | ||
Expect.equals(42, array[i].x); | ||
Expect.equals(42, array[i].y); | ||
} | ||
} finally { | ||
calloc.free(pointer); | ||
} | ||
} |
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// Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file | ||
// for details. All rights reserved. Use of this source code is governed by a | ||
// BSD-style license that can be found in the LICENSE file. | ||
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/// @assertion Field declarations in a Union subclass declaration are | ||
/// automatically given a setter and getter implementation which accesses the | ||
/// native union's field in memory. | ||
/// | ||
/// @description Checks that fields in a Union subclass shares the same memory | ||
/// @author sgrekhov@unipro.ru | ||
import "dart:ffi"; | ||
import "package:ffi/ffi.dart"; | ||
import "../../../Utils/expect.dart"; | ||
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class U extends Union { | ||
@Int32() | ||
external int x; | ||
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@Int16() | ||
external int y; | ||
} | ||
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void main() { | ||
Pointer<U> p = calloc<U>(); | ||
U u = p.ref; | ||
u.y = -42; | ||
u.x = 42; | ||
Expect.equals(42, u.x); | ||
Expect.equals(42, u.y); | ||
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u.x = 1; | ||
u.y = 2; | ||
Expect.equals(2, u.x); | ||
Expect.equals(2, u.y); | ||
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u.x = 65537; | ||
Expect.equals(65537, u.x); | ||
Expect.equals(1, u.y); | ||
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u.x = 65538; | ||
Expect.equals(65538, u.x); | ||
Expect.equals(2, u.y); | ||
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u.y = 2; | ||
Expect.equals(65538, u.x); | ||
Expect.equals(2, u.y); | ||
} |