public static void TryGetOwnedMemory_IndexLength()
{
int[] array = new int[10];
OwnedMemory <int> orignalOwner = new CustomMemoryForTest <int>(array);
ReadOnlyMemory <int> memory = orignalOwner.Memory;
for (int i = 0; i < array.Length; i++)
{
Assert.True(MemoryMarshal.TryGetOwnedMemory(memory.Slice(i), out CustomMemoryForTest <int> customOwner, out int index, out int length));
Assert.Same(orignalOwner, customOwner);
Assert.Equal(i, index);
Assert.Equal(array.Length - i, length);
}
for (int i = 0; i < array.Length; i++)
{
Assert.True(MemoryMarshal.TryGetOwnedMemory(memory.Slice(i), out OwnedMemory <int> owner, out int index, out int length));
Assert.Same(orignalOwner, owner);
Assert.Equal(i, index);
Assert.Equal(array.Length - i, length);
}
for (int i = 0; i < array.Length; i++)
{
Assert.False(MemoryMarshal.TryGetOwnedMemory(memory.Slice(i), out OtherMemoryForTest <int> notOwner, out int index, out int length));
Assert.Null(notOwner);
}
}
public static void TryGetOwnedMemoryFromDefaultMemory()
{
ReadOnlyMemory <int> memory = default;
Assert.False(MemoryMarshal.TryGetOwnedMemory(memory, out OwnedMemory <int> owner));
Assert.Null(owner);
}
/// <summary>
/// Creates an instance of <see cref="ReadOnlySequence{T}"/> from the <see cref="ReadOnlyMemory{T}"/>.
/// Consumer is expected to manage lifetime of memory until <see cref="ReadOnlySequence{T}"/> is not used anymore.
/// </summary>
public ReadOnlySequence(ReadOnlyMemory <T> readOnlyMemory)
{
if (MemoryMarshal.TryGetOwnedMemory(readOnlyMemory, out OwnedMemory <T> ownedMemory, out int index, out int length))
{
_sequenceStart = new SequencePosition(ownedMemory, ReadOnlySequence.OwnedMemoryToSequenceStart(index));
_sequenceEnd = new SequencePosition(ownedMemory, ReadOnlySequence.OwnedMemoryToSequenceEnd(length));
}
public static void TryGetOwnedMemoryFromDefaultMemory_IndexLength()
{
ReadOnlyMemory <int> memory = default;
Assert.False(MemoryMarshal.TryGetOwnedMemory(memory, out OwnedMemory <int> owner, out int index, out int length));
Assert.Equal(0, index);
Assert.Equal(0, length);
Assert.Null(owner);
}
public static void TryGetOwnedMemory()
{
int[] array = new int[10];
OwnedMemory <int> orignalOwner = new CustomMemoryForTest <int>(array);
ReadOnlyMemory <int> memory = orignalOwner.Memory;
Assert.True(MemoryMarshal.TryGetOwnedMemory(memory, out CustomMemoryForTest <int> customOwner));
Assert.Same(orignalOwner, customOwner);
Assert.True(MemoryMarshal.TryGetOwnedMemory(memory, out OwnedMemory <int> owner));
Assert.Same(orignalOwner, owner);
Assert.False(MemoryMarshal.TryGetOwnedMemory(memory, out OtherMemoryForTest <int> notOwner));
Assert.Null(notOwner);
}