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    • Avalanche.Localization
      • Introduction
      • Localization
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      • LocalizationFiles
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      • LocalizationLines
      • TemplateFormat
      • CultureProvider
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      • Microsoft.Extensions
        • Introduction
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        • ITextLocalizer
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        • AspNetCore
      • Pluralization
        • Introduction
        • Multiple plural parameters
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        • IPluralNumber
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    • Avalanche.Message
      • Introduction
      • IMessage
      • IMessageProvider
      • IMessageDescription
      • IMessageDescriptions
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      • Validation
      • Localization
    • Avalanche.StatusCode
      • Introduction
      • HResult
        • Introduction
        • HResult.Facilities
        • BasicMessages
        • RpcMessages
        • DispatchMessages
        • ItfMessages
        • Win32Messages
        • ClrMessages
      • System
        • Introduction
        • AccessControlMessages
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    • Avalanche.Template
      • Introduction
      • TemplateFormats
      • ITemplatePrintable
      • ITemplateFormatPrintable
      • ITemplateText
      • ITemplateBreakdown
      • ITemplateFormat
      • ITemplateFormats
      • Extract Arguments
      • Emplacement
    • Avalanche.Tokenizer
      • Introduction
      • IToken
      • ITokenizer
      • Tokenizers
    • Avalanche.Service
      • Introduction
      • Service
        • IService
        • Construction
        • Query
        • CancellationToken
        • CachePolicy
        • Cast
        • Scope
        • Dispose
      • Handler
        • Introduction
        • IHandler
        • Cancel
        • Recursion
        • Cyclicity
        • Delegates
        • Casting
        • Invokable
        • Handlers
      • Request
        • Introduction
        • IRequest
        • [Request]
        • [ContextParameter]
        • Print Tree
      • Dependency Injection
        • Introduction
        • ServiceRequest<T>
        • Handler
        • CachePolicy
        • CancellationToken
        • QueryLogger
      • Examples
        • Expression Example
        • Mapper Example
      • ServiceMessages
    • Avalanche.Writer
      • Introduction
      • Writer
      • Referer
      • TypeCast
      • DefaultConstructor
      • DelegateWriter
      • WriterPipe
      • ConstantWriter
      • PassthroughWriter
      • Context
      • WriterMessages
    • Avalanche.Accessor
      • Introduction
      • AccessorServices
      • List
        • ListAccessor
        • ListConstructor
        • ListDeconstructor
        • ListDefaultConstructor
        • ListGet
        • ListSet
        • ListAdd
        • ListInsert
        • ListClear
        • ListCount
        • ListIndexOf
        • ListRemoveAt
        • ListReferer
      • Map
        • MapAccessor
        • MapConstructor
        • MapDeconstructor
        • MapDefaultConstructor
        • MapSet
        • MapGet
        • MapRemove
        • MapClear
        • MapCount
        • MapReferer
      • Record
        • RecordAccessor
        • RecordConstructor
        • RecordDeconstructor
        • RecordDefaultConstructor
      • Field
        • FieldAccessor
        • FieldReader
        • FieldWriter
        • FieldReferer
      • Dependency Injection
        • Introduction
      • AccessorMessages
    • Avalanche.Emit
      • Introduction
      • TypeBuilder
      • ConstructorBuilder
      • MethodBuilder
      • PropertyBuilder
      • FieldBuilder
      • Emit
      • Utilities
    • Avalanche.DataType
      • Introduction
      • IDataTypeBase
      • IDataType
      • IRecordType
      • IFieldType
      • IUnionType
      • IListType
      • IMapType
      • IValueType
      • IEnumerationType
      • IIntegerType
      • IRealType
      • IStringType
      • IAnyType
      • DataTypeRequest
      • PrintTree
      • DataTypeMessages
    • Avalanche.FileSystem
      • Introduction
      • Abstractions
        • IFileSystem
          • IFileSystemBrowse
          • IFileSystemCreateDirectory
          • IFileSystemDelete
          • IFileSystemFileAttribute
          • IFileSystemMount
          • IFileSystemMove
          • IFileSystemObserve
          • IFileSystemOpen
        • IEvent
        • IEntry
        • IOption
        • IToken
      • FileSystem
      • VirtualFileSystem
      • MemoryFileSystem
      • EmbeddedFileSystem
      • HttpFileSystem
      • Decoration
      • IFileProvider
      • Events
      • Utilities
        • Dispose
        • File Scanner
        • Visit Tree
        • File Operation
    • Avalanche.Identity
      • Introduction
      • Identity
      • IdentityParts
      • IdentityInterner
      • IdentityComparer
      • Print Tree
      • IdentityAccessors
        • Introduction
        • TypeName
    • Avalanche.Utilities
      • Introduction
      • Collections
        • Tuples
        • StructList
        • ArrayList
        • BijectionMap
        • LocakableDictionary
        • LockableList
        • MapList
        • Pipe
        • RingQueue
        • EnumerableExtensions
        • TupleUtilities
        • ArrayUtilities
      • Comparers
        • IGraphComparer
        • IGraphComparable
        • AlphaNumericComparer
        • EnumerableComparer
        • EnumerableGraphComparer
        • ReferenceComparer
        • KeyValuePairComparer
        • DefaultComparerProvider
        • RecordComparer
      • Cloners
        • ICloner
        • IGraphCloner
        • IGraphCloneable
        • EnumerableCloner
        • FieldCloner
        • PassthroughCloner
        • RecordCloner
        • ClonerProvider
      • Dispose
        • IDisposeAttachable
        • IDisposeBelatable
      • Provider
        • Introduction
        • ProviderBase
        • Delegate
        • Concatenation
        • Cache
        • ResultCapture
        • AsReadOnly
        • AsService
      • Record
        • IRecordDescription
        • IFieldDescription
        • IConstructorDescription
        • IConstructionDescription
        • IParameterDescription
        • IRecordProviders
        • RecordDelegates
          • RecordCreate
          • RecordClone
          • RecordCopy
          • IRecordDelegates
        • FieldDelegates
          • FieldRead
          • FieldWrite
          • RecreateWith
          • IFieldDelegates
      • String
        • IEscaper
        • UnicodeString
      • Miscellaneous
        • IIdGenerator
        • Permutation
        • IReadOnly
        • IUserDataContainer
        • Void
    • Avalanche.Core
      • License
      • Order

    IListAccessor

    IListAccessor describes writers that access a list. List can exist as class, struct, memory-span or stream.

    /// <summary>List accessor</summary>
    public interface IListAccessor : IAccessorBase, IDefaultConstructorAccessor, IConstructorAccessor, IDeconstructorAccessor
    {
        /// <summary></summary>
        Type ListType { get; set; }
        /// <summary></summary>
        Type ElementType { get; set; }
    
        /// <summary>Get reference to element</summary>
        IWriterBase Referer { get; set; }
        /// <summary>Add element</summary>
        IWriterBase Add { get; set; }
        /// <summary>Insert element at index</summary>
        IWriterBase Insert { get; set; }
        /// <summary>Remove element at index</summary>
        IWriterBase RemoveAt { get; set; }
        /// <summary>Get element at index.</summary>
        IWriterBase Get { get; set; }
        /// <summary>Set element at index.</summary>
        IWriterBase Set { get; set; }
        /// <summary>Find index of element.</summary>
        IWriterBase IndexOf { get; set; }
        /// <summary>Clear list.</summary>
        IWriterFrom<Avalanche.Void> Clear { get; set; }
        /// <summary>Count.</summary>
        IWriterTo<long> Count { get; set; }
    }
    

    IListAccessor<L> and IListAccessor<L, E> describes accessor for container type L and element E.

    /// <summary>Indicates that is list accessor of specific types</summary>
    public interface IListAccessorT : IListAccessor, IAccessorT, IDefaultConstructorAccessorT { }
    /// <summary>Indicates <typeparamref name="List"/> type.</summary>
    public interface IListAccessor<List> : IListAccessorT, IAccessor<List>, IDefaultConstructorAccessor<List>, IConstructorAccessor<List>, IDeconstructorAccessor<List> { }
    /// <summary>Indicates <typeparamref name="Element"/> type.</summary>
    public interface IListAccessorOf<Element> : IListAccessorT { }
    
    /// <summary>List accessor of <typeparamref name="List"/>.</summary>
    public interface IListAccessor<List, Element> : IListAccessor<List>, IListAccessorOf<Element>, IConstructorAccessor<List, IEnumerable<Element>>, IDeconstructorAccessor<List, IEnumerable<Element>>
    {
        /// <summary>Get reference to element. <![CDATA[IRefererBase<(List, int), Element>]]> for IList classes, IWriter for memories and streams.</summary>
        new IWriterBase Referer { get; set; }
        /// <summary>Add element</summary>
        new IWriterBase<Element, List> Add { get; set; }
        /// <summary>Insert element at index</summary>
        new IWriterBase<(Element, long), List> Insert { get; set; }
        /// <summary>Remove element at index</summary>
        new IWriterBase<long, List> RemoveAt { get; set; }
        /// <summary>Get element at index.</summary>
        new IWriterBase<(List, long), Element> Get { get; set; }
        /// <summary>Set element at index.</summary>
        new IWriterBase<(Element, long), List> Set { get; set; }
        /// <summary>Find index of element.</summary>
        new IWriterBase<(List, Element), long> IndexOf { get; set; }
        /// <summary>Clear list.</summary>
        new IWriterBase<Avalanche.Void, List> Clear { get; set; }
        /// <summary>Count.</summary>
        new IWriterBase<List, long> Count { get; set; }
    }
    

    IListVisitor and IListVisitorT are visitor interfaces for IAccessorBase.Accept(IAccessorVisitor).

    /// <summary>Base interface for list visitor</summary>
    public interface IListVisitor : IAccessorVisitor
    {
        /// <summary>Try visit <paramref name="listAccessor"/>.</summary>
        /// <returns>true to continue visitation</returns>
        bool VisitListAccessor(IListAccessor listAccessor);
    }
    
    /// <summary>Base interface for list visitor</summary>
    public interface IListVisitorT : IAccessorVisitor
    {
        /// <summary>Try visit <paramref name="listAccessor"/>.</summary>
        /// <returns>true to continue visitation</returns>
        bool VisitListAccessor<List, Element>(IListAccessor<List, Element> listAccessor);
    }
    

    ListAccessor

    ListAccessor<L, E> is the default implementation.

    IListAccessor accessor = new ListAccessor<List<int>, int>()
    {
        Constructor = null!,
        Deconstructor = null!,
        DefaultConstructor = null!,
        Referer = null!,
        Add = null!,
        Insert = null!,
        RemoveAt = null!,
        Get = null!,
        Set = null!,
        IndexOf = null!,
        Clear = null!,
        Count = null!
    }.SetReadOnly();
    

    ListAccessor.Create(Type, Type) also constructs IListAccessor<L, E>. There is a setter method for each field.

    IListAccessor<List<int>, int> accessor =
        (IListAccessor<List<int>, int>)
        ListAccessor.Create(typeof(List<int>), typeof(int))
        .SetConstructor(null!)
        .SetDeconstructor(null!)
        .SetDefaultConstructor(null!)
        .SetReferer(null!)
        .SetAdd(null!)
        .SetInsert(null!)
        .SetRemoveAt(null!)
        .SetGet(null!)
        .SetSet(null!)
        .SetIndexOf(null!)
        .SetClear(null!)
        .SetCount(null!)
        .SetReadOnly();
    

    ListAccessorRequest

    ListAccessorRequest.Create(Type) creates a request for implementation to IListAccessor<L>.

    // Create request
    ListAccessorRequest request = ListAccessorRequest.Create(typeof(List<int>));
    // Issue request
    IListAccessor<List<int>, int> accessor =
        AccessorServices.Instance
        .GetRequired<ListAccessorRequest, IListAccessor<List<int>, int>>(request);
    

    IService.GetListAccessor<L>() extension method creates and executes ListAccessorRequest.

    IListAccessor<List<int>> accessor = AccessorServices.Instance.GetListAccessor<List<int>>();
    

    If dependency injection is used, ListAccessorRequest can be issued with service request to IListAccessor<L>.

    IListAccessor<List<int>> accessor =
        AccessorServices.Instance
        .GetRequiredService<IListAccessor<List<int>>>();
    

    Usage

    .DefaultConstructor is a writer that creates list with default value.

    List<int> list = accessor.DefaultConstructor.Read();
    

    .Constructor is a writer that creates list from enumerable.

    List<int> list = accessor.Constructor.ReadAs<IEnumerable<int>, List<int>>(new int[] { 1, 2, 3 });
    

    .Deconstructor is a writer that reads values as a enumerable.

    IEnumerable<int> deconstruction = accessor.Deconstructor.ReadAs<List<int>, IEnumerable<int>>(myList);
    

    .Add is writer that adds an element

    List<int> myList = new List<int>();
    accessor.Add.WriteAs(10, myList);
    

    If value typed list is on stack, it is refered with 'ref' pointer.

    IListAccessor<StructList4<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<StructList4<int>>>();
    StructList4<int> valueList = new StructList4<int>();
    accessor.Add.WriteAs(10, ref valueList);
    

    If value typed list is in heap, it can be refered with adapted writer and boxed 'object'.

    IListAccessor<StructList4<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<StructList4<int>>>();
    object boxedList = new StructList4<int>();
    accessor.Add.TypeCast<int, object>().WriteAs(10, boxedList);
    

    Full Example

    Full example
    using System.Collections.Generic;
    using Avalanche.Accessor;
    using Avalanche.Service;
    using Avalanche.Utilities;
    using Avalanche.Writer;
    using Microsoft.Extensions.DependencyInjection;
    
    public class listaccessor
    {
        public static void Run()
        {
            {
                // <01>
                IListAccessor accessor = new ListAccessor<List<int>, int>()
                {
                    Constructor = null!,
                    Deconstructor = null!,
                    DefaultConstructor = null!,
                    Referer = null!,
                    Add = null!,
                    Insert = null!,
                    RemoveAt = null!,
                    Get = null!,
                    Set = null!,
                    IndexOf = null!,
                    Clear = null!,
                    Count = null!
                }.SetReadOnly();
                // </01>
            }
            {
                // <02>
                IListAccessor<List<int>, int> accessor =
                    (IListAccessor<List<int>, int>)
                    ListAccessor.Create(typeof(List<int>), typeof(int))
                    .SetConstructor(null!)
                    .SetDeconstructor(null!)
                    .SetDefaultConstructor(null!)
                    .SetReferer(null!)
                    .SetAdd(null!)
                    .SetInsert(null!)
                    .SetRemoveAt(null!)
                    .SetGet(null!)
                    .SetSet(null!)
                    .SetIndexOf(null!)
                    .SetClear(null!)
                    .SetCount(null!)
                    .SetReadOnly();
                // </02>
            }
    
            {
                // <11>
                // Create request
                ListAccessorRequest request = ListAccessorRequest.Create(typeof(List<int>));
                // Issue request
                IListAccessor<List<int>, int> accessor =
                    AccessorServices.Instance
                    .GetRequired<ListAccessorRequest, IListAccessor<List<int>, int>>(request);
                // </11>
            }
            {
                // <13>
                IListAccessor<List<int>> accessor = AccessorServices.Instance.GetListAccessor<List<int>>();
                // </13>
            }
            {
                // <14>
                IListAccessor<List<int>> accessor =
                    AccessorServices.Instance
                    .GetRequiredService<IListAccessor<List<int>>>();
                // </14>
            }
    
            {
                IListAccessor<List<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<List<int>>>();
                // <21>
                List<int> list = accessor.DefaultConstructor.Read();
                // </21>
            }
            {
                IListAccessor<List<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<List<int>>>();
                // <22>
                List<int> list = accessor.Constructor.ReadAs<IEnumerable<int>, List<int>>(new int[] { 1, 2, 3 });
                // </22>
            }
            {
                IListAccessor<List<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<List<int>>>();
                List<int> myList = new List<int> { 7, 8, 9 };
                // <23>
                IEnumerable<int> deconstruction = accessor.Deconstructor.ReadAs<List<int>, IEnumerable<int>>(myList);
                // </23>
            }
            {
                IListAccessor<List<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<List<int>>>();
                // <24>
                List<int> myList = new List<int>();
                accessor.Add.WriteAs(10, myList);
                // </24>
            }
            {
                // <25>
                IListAccessor<StructList4<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<StructList4<int>>>();
                StructList4<int> valueList = new StructList4<int>();
                accessor.Add.WriteAs(10, ref valueList);
                // </25>
            }
            {
                // <26>
                IListAccessor<StructList4<int>> accessor = AccessorServices.Instance.GetRequiredService<IListAccessor<StructList4<int>>>();
                object boxedList = new StructList4<int>();
                accessor.Add.TypeCast<int, object>().WriteAs(10, boxedList);
                // </26>
            }
    
        }
    }
    
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