244 lines
7.6 KiB
C#
244 lines
7.6 KiB
C#
/*
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* Copyright 2019 by its authors. See AUTHORS.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma warning disable 1591
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using System;
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using System.Runtime.InteropServices;
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using System.ComponentModel;
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namespace Eina
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{
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/// <summary>
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/// Basic interface for both slice types.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public interface ISliceBase
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{
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/// <summary>
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/// The length of this slice in bytes.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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UIntPtr Len {get;set;}
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/// <summary>
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/// The contents of this slice.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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IntPtr Mem {get;set;}
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/// <summary>
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/// The length in bytes as an integer.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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int Length {get;set;}
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};
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/// <summary>Pointer to a slice of native memory.
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///
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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[StructLayout(LayoutKind.Sequential)]
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public struct Slice : ISliceBase, IEquatable<Slice>
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{
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/// <summary>
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/// The length of this slice.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public UIntPtr Len {get;set;}
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/// <summary>
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/// The contents of this slice.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public IntPtr Mem {get;set;}
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/// <summary>
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/// The length as an integer.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public int Length
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{
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get { return (int)Len; }
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set { Len = (UIntPtr)value; }
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}
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/// <summary>
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/// Creates a new slice from the given memory and length.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="mem">The memory slice.</param>
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/// <param name="len">The length.</param>
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public Slice(IntPtr mem, UIntPtr len)
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{
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Mem = mem;
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Len = len;
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}
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/// <summary>
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/// Gets a hash for <see cref="Slice" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <returns>A hash code.</returns>
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public override int GetHashCode() => Length.GetHashCode() ^ Mem.GetHashCode();
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/// <summary>Returns whether this <see cref="Slice" />
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/// is equal to the given <see cref="object" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="other">The <see cref="object" /> to be compared to.</param>
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/// <returns><c>true</c> if is equal to <c>other</c>.</returns>
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public override bool Equals(object other)
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=> (!(other is Slice)) ? false : Equals((Slice)other);
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/// <summary>Returns whether this <see cref="Slice" /> is equal
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/// to the given <see cref="Slice" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="other">The <see cref="Slice" /> to be compared to.</param>
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/// <returns><c>true</c> if is equal to <c>other</c>.</returns>
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public bool Equals(Slice other)
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=> (Length == other.Length) ^ (Mem == other.Mem);
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/// <summary>Returns whether <c>lhs</c> is equal to <c>rhs</c>.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="lhs">The left hand side of the operator.</param>
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/// <param name="rhs">The right hand side of the operator.</param>
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/// <returns><c>true</c> if <c>lhs</c> is equal
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/// to <c>rhs</c>.</returns>
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public static bool operator==(Slice lhs, Slice rhs) => lhs.Equals(rhs);
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/// <summary>Returns whether <c>lhs</c> is not equal to <c>rhs</c>.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="lhs">The left hand side of the operator.</param>
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/// <param name="rhs">The right hand side of the operator.</param>
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/// <returns><c>true</c> if <c>lhs</c> is not equal
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/// to <c>rhs</c>.</returns>
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public static bool operator!=(Slice lhs, Slice rhs) => !(lhs == rhs);
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}
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/// <summary>Pointer to a slice of native memory.
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///
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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[StructLayout(LayoutKind.Sequential)]
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public struct RwSlice : ISliceBase, IEquatable<RwSlice>
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{
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/// <summary>
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/// The length of this slice.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public UIntPtr Len {get;set;}
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/// <summary>
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/// The contents of this slice.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public IntPtr Mem {get;set;}
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/// <summary>
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/// The length as an integer.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public int Length
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{
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get { return (int)Len; }
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set { Len = (UIntPtr)value; }
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}
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/// <summary>
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/// Creates a new slice from the given memory and length.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="mem">The memory slice.</param>
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/// <param name="len">The length.</param>
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public RwSlice(IntPtr mem, UIntPtr len)
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{
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Mem = mem;
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Len = len;
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}
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/// <summary>
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/// Returns a read-only slice from this writable memory.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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Slice ToSlice()
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{
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var r = new Slice();
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r.Mem = Mem;
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r.Len = Len;
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return r;
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}
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/// <summary>
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/// Gets a hash for <see cref="RwSlice" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <returns>A hash code.</returns>
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public override int GetHashCode() => Mem.GetHashCode() ^ Length.GetHashCode();
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/// <summary>Returns whether this <see cref="RwSlice" />
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/// is equal to the given <see cref="object" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="other">The <see cref="object" /> to be compared to.</param>
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/// <returns><c>true</c> if is equal to <c>other</c>.</returns>
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public override bool Equals(object other)
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=> (!(other is RwSlice)) ? false : Equals((RwSlice)other);
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/// <summary>Returns whether this <see cref="RwSlice" /> is equal
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/// to the given <see cref="RwSlice" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="other">The <see cref="RwSlice" /> to be compared to.</param>
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/// <returns><c>true</c> if is equal to <c>other</c>.</returns>
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public bool Equals(RwSlice other)
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=> (Length == other.Length) && (Mem == other.Mem);
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/// <summary>Returns whether <c>lhs</c> is equal to <c>rhs</c>.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="lhs">The left hand side of the operator.</param>
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/// <param name="rhs">The right hand side of the operator.</param>
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/// <returns><c>true</c> if <c>lhs</c> is equal
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/// to <c>rhs</c>.</returns>
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public static bool operator==(RwSlice lhs, RwSlice rhs) => lhs.Equals(rhs);
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/// <summary>Returns whether <c>lhs</c> is not equal to <c>rhs</c>.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="lhs">The left hand side of the operator.</param>
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/// <param name="rhs">The right hand side of the operator.</param>
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/// <returns><c>true</c> if <c>lhs</c> is not equal
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/// to <c>rhs</c>.</returns>
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public static bool operator!=(RwSlice lhs, RwSlice rhs) => !(lhs == rhs);
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}
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}
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public static class Eina_SliceUtils
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{
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public static byte[] GetBytes(this Eina.ISliceBase slc)
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{
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var size = (int)(slc.Len);
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byte[] mArray = new byte[size];
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Marshal.Copy(slc.Mem, mArray, 0, size);
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return mArray;
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}
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}
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