617 lines
18 KiB
C#
617 lines
18 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.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics.CodeAnalysis;
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using System.Diagnostics.Contracts;
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using static Eina.TraitFunctions;
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using static Eina.ArrayNativeFunctions;
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namespace Eina
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{
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[EditorBrowsable(EditorBrowsableState.Never)]
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internal static class ArrayNativeFunctions
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{
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[DllImport(efl.Libs.Eina)] internal static extern IntPtr
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eina_array_new(uint step);
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[DllImport(efl.Libs.Eina)] internal static extern void
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eina_array_free(IntPtr array);
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[DllImport(efl.Libs.Eina)] internal static extern void
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eina_array_flush(IntPtr array);
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public delegate bool KeepCb(IntPtr data, IntPtr gdata);
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[DllImport(efl.Libs.Eina)] [return: MarshalAs(UnmanagedType.U1)] internal static extern bool
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eina_array_remove(IntPtr array, KeepCb keep, IntPtr gdata);
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[DllImport(efl.Libs.Eina)] [return: MarshalAs(UnmanagedType.U1)] internal static extern bool
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eina_array_push(IntPtr array, IntPtr data);
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[DllImport(efl.Libs.Eina)] internal static extern IntPtr
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eina_array_iterator_new(IntPtr array);
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[DllImport(efl.Libs.Eina)] internal static extern IntPtr
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eina_array_accessor_new(IntPtr array);
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[DllImport(efl.Libs.Eina)] [return: MarshalAs(UnmanagedType.U1)]
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internal static extern bool
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eina_array_find(IntPtr array, IntPtr data,
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uint out_idx);
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[DllImport(efl.Libs.CustomExports)] internal static extern void
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eina_array_clean_custom_export_mono(IntPtr array);
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[DllImport(efl.Libs.CustomExports)] [return: MarshalAs(UnmanagedType.U1)] internal static extern bool
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eina_array_push_custom_export_mono(IntPtr array, IntPtr data);
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[DllImport(efl.Libs.CustomExports)] internal static extern IntPtr
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eina_array_pop_custom_export_mono(IntPtr array);
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[DllImport(efl.Libs.CustomExports)] internal static extern IntPtr
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eina_array_data_get_custom_export_mono(IntPtr array, uint idx);
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[DllImport(efl.Libs.CustomExports)] internal static extern void
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eina_array_data_set_custom_export_mono(IntPtr array, uint idx, IntPtr data);
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[DllImport(efl.Libs.CustomExports)] internal static extern uint
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eina_array_count_custom_export_mono(IntPtr array);
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[DllImport(efl.Libs.CustomExports)] [return: MarshalAs(UnmanagedType.U1)] internal static extern bool
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eina_array_foreach_custom_export_mono(IntPtr array, IntPtr cb, IntPtr fdata);
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[DllImport(efl.Libs.CustomExports)] internal static extern void
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eina_array_insert_at_custom_export_mono(IntPtr array, uint index, IntPtr data);
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}
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/// <summary>A container of contiguous allocated elements.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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[SuppressMessage("Microsoft.Naming", "CA1710:IdentifiersShouldHaveCorrectSuffix",
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Justification="This is a generalized container mapping the native one.")]
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public class Array<T> : IList<T>, IEnumerable<T>, IDisposable
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{
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public const uint DefaultStep = 32;
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/// <summary>Pointer to the native buffer.</summary>
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[EditorBrowsable(EditorBrowsableState.Never)]
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public IntPtr Handle { get; set; } = IntPtr.Zero;
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/// <summary>Whether this wrapper owns the native buffer.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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internal bool Own { get; set; }
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/// <summary>Who is in charge of releasing the resources wrapped by
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/// this instance.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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internal bool OwnContent { get; set; }
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/// <summary> Gets the number of elements contained in the <see cref="Array{T}" />.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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public int Count
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{
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get => (int)eina_array_count_custom_export_mono(Handle);
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}
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/// <summary>
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/// Gets a value indicating whether the <see cref="Array" /> is read-only.
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/// <para>Since EFL 1.24.</para>
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///<para>
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/// It's the negative of <see cref="OwnContent" />.
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///</para>
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/// </summary>
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public bool IsReadOnly { get => !OwnContent; }
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private void InitNew(uint step)
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{
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Handle = eina_array_new(step);
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Own = true;
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OwnContent = true;
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if (Handle == IntPtr.Zero)
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{
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throw new SEHException("Could not alloc array");
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}
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}
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internal bool InternalPush(IntPtr ele)
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=> eina_array_push_custom_export_mono(Handle, ele);
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internal IntPtr InternalPop()
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=> eina_array_pop_custom_export_mono(Handle);
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internal IntPtr InternalDataGet(int idx)
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=> eina_array_data_get_custom_export_mono(Handle, CheckBounds(idx));
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internal void InternalDataSet(int idx, IntPtr ele)
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=> eina_array_data_set_custom_export_mono(Handle, CheckBounds(idx), ele);
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private uint CheckBounds(int idx)
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{
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if (!(0 <= idx && idx < Count))
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{
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throw new ArgumentOutOfRangeException(nameof(idx), $"{nameof(idx)} is out of bounds.");
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}
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return (uint)idx;
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}
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private U LoopingThrough<U>(T val, Func<int, U> f1, Func<U> f2)
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{
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for (int i = 0, count = Count; i < count; ++i)
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{
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if (NativeToManaged<T>(InternalDataGet(i)).Equals(val))
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{
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return f1(i);
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}
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}
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return f2();
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}
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private void CheckOwnerships()
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{
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if ((Own == false) && (OwnContent == true))
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{
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throw new InvalidOperationException(nameof(Own) + "/" + nameof(OwnContent));
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}
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}
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private void RequireWritable()
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{
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if (IsReadOnly)
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{
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throw new NotSupportedException("This object's instance is read only.");
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}
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}
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private void DeleteData(IntPtr ele)
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{
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if (OwnContent)
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{
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NativeFree<T>(ele);
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}
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}
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/// <summary>
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/// Create a new array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public Array()
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{
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InitNew(DefaultStep);
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}
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/// <summary>
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/// Create a new array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="step">Step size of the array.</param>
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public Array(uint step)
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{
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InitNew(step);
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}
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/// <summary>
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/// Create a new array.
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/// </summary>
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/// <param name="handle">The native handle to be wrapped.</param>
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/// <param name="own">Whether this wrapper owns the native handle.</param>
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[EditorBrowsable(EditorBrowsableState.Never)]
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public Array(IntPtr handle, bool own)
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{
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Handle = (handle != IntPtr.Zero)
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? handle
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: throw new ArgumentNullException(nameof(handle),
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$"{nameof(Handle)} can't be null");
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Own = own;
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OwnContent = own;
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CheckOwnerships();
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}
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/// <summary>
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/// Create a new array.
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/// </summary>
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/// <param name="handle">The native array to be wrapped.</param>
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/// <param name="own">Whether this wrapper owns the native array.</param>
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/// <param name="ownContent">For compatibility with other EFL# containers.</param>
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[EditorBrowsable(EditorBrowsableState.Never)]
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public Array(IntPtr handle, bool own, bool ownContent)
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{
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Handle = (handle != IntPtr.Zero)
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? handle
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: throw new ArgumentNullException(nameof(handle),
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$"{nameof(Handle)} can't be null");
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Own = own;
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OwnContent = ownContent;
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CheckOwnerships();
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}
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/// <summary>
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/// Finalizer to be called from the Garbage Collector.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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~Array()
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{
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Dispose(false);
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}
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/// <summary>Disposes of this wrapper, releasing the native array if owned.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="disposing">True if this was called from <see cref="Dispose()"/> public method. False if
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/// called from the C# finalizer.</param>
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protected virtual void Dispose(bool disposing)
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{
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IntPtr h = Handle;
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Handle = IntPtr.Zero;
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if (h == IntPtr.Zero)
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{
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return;
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}
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for (int len = (int)eina_array_count_custom_export_mono(h),
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i = 0; i < len; ++i)
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{
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if (!OwnContent)
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{
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break;
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}
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DeleteData(eina_array_data_get_custom_export_mono(h, (uint)i));
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}
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if (Own)
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{
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if (disposing)
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{
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eina_array_free(h);
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}
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else
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{
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Efl.Eo.Globals.ThreadSafeFreeCbExec(eina_array_free, h);
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}
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}
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}
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/// <summary>Releases the native resources held by this instance.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>Releases the native resources held by this instance.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public void Free()
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{
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Dispose();
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}
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private void FreeElementsIfOwned()
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{
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if (IsReadOnly)
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{
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throw new NotSupportedException("This object's instance is read only.");
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}
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for (int i = 0, count = Count; i < count; ++i)
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{
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DeleteData(InternalDataGet(i));
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}
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}
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/// <summary>
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/// Clears an array's elements and deallocates the memory.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public void Clean()
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{
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FreeElementsIfOwned();
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eina_array_clean_custom_export_mono(Handle);
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}
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/// <summary>
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/// Clears an array's elements and deallocates the memory.
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/// </summary>
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public void Flush()
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{
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FreeElementsIfOwned();
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eina_array_flush(Handle);
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}
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internal void SetOwnership(bool ownAll)
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{
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Own = ownAll;
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OwnContent = ownAll;
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CheckOwnerships();
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}
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internal void SetOwnership(bool own, bool ownContent)
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{
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Own = own;
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OwnContent = ownContent;
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CheckOwnerships();
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}
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/// <summary>
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/// Inserts the element of the array at the end.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="val">The value of the element to be inserted.</param>
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public bool Push(T val)
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{
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RequireWritable();
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IntPtr ele = ManagedToNativeAlloc(val);
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var r = InternalPush(ele);
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if (!r)
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{
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NativeFree<T>(ele);
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}
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return r;
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}
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// TODO ???
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// public void Add(T val)
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// {
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// if (!Push(val))
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// {
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// throw;
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// }
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// }
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/// <summary>
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/// Returns the element of the array at the end.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <returns>The element at the end position.</returns>
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public T Pop()
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{
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RequireWritable();
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IntPtr ele = InternalPop();
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var r = NativeToManaged<T>(ele);
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if (ele != IntPtr.Zero)
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{
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DeleteData(ele);
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}
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return r;
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}
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/// <summary>
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/// Returns the element of the array at the specified position.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="idx">The position of the desired element.</param>
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/// <returns>The element at the specified position</returns>
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public T DataGet(int idx)
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=> NativeToManaged<T>(InternalDataGet(idx));
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/// <summary>
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/// Returns the element of the array at the specified position.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="idx">The position of the desired element.</param>
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/// <returns>The element at the specified position</returns>
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public T At(int idx)
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=> DataGet(idx);
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/// <summary>
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/// Replaces the element at the specified position.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <param name="idx">The position of the desired element.</param>
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/// <param name="val">The value of the element to be inserted.</param>
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internal void DataSet(int idx, T val)
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{
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RequireWritable();
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IntPtr ele = InternalDataGet(idx);
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if (ele != IntPtr.Zero)
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{
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DeleteData(ele);
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}
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InternalDataSet(idx, ManagedToNativeAlloc(val));
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}
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/// <summary>
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/// Accessor by index to the elements of this list.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public T this[int idx]
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{
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get
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{
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return DataGet(idx);
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}
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set
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{
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DataSet(idx, value);
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}
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}
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/// <summary>
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/// Returns a array containing all of the elements in proper sequence.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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/// <returns>A array</returns>
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public T[] ToArray()
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{
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int len = Count;
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var managed = new T[len];
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for (int i = 0; i < len; ++i)
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{
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managed[i] = DataGet(i);
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}
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return managed;
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}
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/// <summary>
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/// Appends all elements at the end of array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public bool Append(T[] values)
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{
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Contract.Requires(values != null, nameof(values));
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foreach (T v in values)
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{
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if (!Push(v))
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{
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return false;
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}
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}
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return true;
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}
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/// <summary> Gets an Iterator for this Array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public Eina.Iterator<T> GetIterator()
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=> new Eina.Iterator<T>(eina_array_iterator_new(Handle), true);
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/// <summary> Gets an Enumerator for this Array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public IEnumerator<T> GetEnumerator()
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{
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for (int i = 0, count = Count; i < count; ++i)
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{
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yield return DataGet(i);
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}
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}
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/// <summary> Gets an Enumerator for this Array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
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=> this.GetEnumerator();
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/// <summary> Gets an Accessor for this Array.
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/// <para>Since EFL 1.23.</para>
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/// </summary>
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public Eina.Accessor<T> GetAccessor()
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=> new Eina.Accessor<T>(eina_array_accessor_new(Handle), Ownership.Managed);
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/// <summary>
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/// Removes the first occurrence of a specific object.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="val">The object to remove.</param>
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public bool Remove(T val)
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=> LoopingThrough(val,
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(i) =>
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{
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RemoveAt(i);
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return true;
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}, () => false);
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/// <summary>
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/// Adds an item.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="val">The object to add.</param>
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public void Add(T val) => Push(val);
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/// <summary>
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/// Removes all items.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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public void Clear() => Clean();
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/// <summary>
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/// Determines whether the <see cref="Array{T}" /> contains a specific value.
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/// <para>Since EFL 1.24.</para>
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/// </summary>
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/// <param name="val">The object to locate.</param>
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public bool Contains(T val)
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=> LoopingThrough(val, (i) => true, () => false);
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/// <summary>
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/// Copies the elements of the <see cref="Array{T}" /> to an
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/// <see cref="Array" />, starting at a particular <see cref="Array" /> index.
|
|
/// <para>Since EFL 1.24.</para>
|
|
/// </summary>
|
|
/// <param name="array">The one-dimensional <see cref="Array" /> that is the
|
|
/// destination of the elements copied from <see cref="Array{T}" />.
|
|
/// The <see cref="Array" /> must have zero-based indexing.</param>
|
|
/// <param name="arrayIndex">The zero-based index in array at which copying
|
|
/// begins.</param>
|
|
public void CopyTo(T[] array, int arrayIndex)
|
|
=> ToArray().CopyTo(array, arrayIndex);
|
|
|
|
/// <summary>
|
|
/// Determines the index of a specific item.
|
|
/// <para>Since EFL 1.24.</para>
|
|
/// </summary>
|
|
/// <param name="val">The object to locate.</param>
|
|
public int IndexOf(T val)
|
|
=> LoopingThrough(val, (i) => i, () => -1);
|
|
|
|
/// <summary>
|
|
/// Inserts an item to the <see cref="Array{T}" /> at the specified index.
|
|
/// <para>Since EFL 1.24.</para>
|
|
/// </summary>
|
|
/// <param name="index">The zero-based index at which item should be inserted.</param>
|
|
/// <param name="val">The object to insert.</param>
|
|
public void Insert(int index, T val)
|
|
{
|
|
RequireWritable();
|
|
|
|
if (index < 0)
|
|
{
|
|
throw new ArgumentOutOfRangeException(nameof(index), $"{nameof(index)} cannot be negative.");
|
|
}
|
|
|
|
if (Count < index)
|
|
{
|
|
throw new ArgumentOutOfRangeException(nameof(index), $"{nameof(index)} is greater than {nameof(Count)} + 1.");
|
|
}
|
|
|
|
if (index == Count)
|
|
{
|
|
Push(val);
|
|
return;
|
|
}
|
|
|
|
eina_array_insert_at_custom_export_mono(Handle, (uint)index,
|
|
ManagedToNativeAlloc(val));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Removes the <see cref="Array{T}" /> item at the specified index.
|
|
/// <para>Since EFL 1.24.</para>
|
|
/// </summary>
|
|
/// <param name="index">The zero-based index of the item to remove.</param>
|
|
public void RemoveAt(int index)
|
|
{
|
|
RequireWritable();
|
|
|
|
var ele = InternalDataGet(index);
|
|
DeleteData(ele);
|
|
eina_array_remove(Handle, (data,gdata)
|
|
=> ele != data,
|
|
IntPtr.Zero);
|
|
}
|
|
}
|
|
|
|
}
|