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CachingConverterDecorator.cs
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CachingConverterDecorator.cs
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using System.Collections.Generic;
using System.Runtime.CompilerServices;
using Platform.Collections;
#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
namespace Platform.Converters
{
/// <summary>
/// <para>
/// Represents the caching converter decorator.
/// </para>
/// <para></para>
/// </summary>
/// <seealso cref="IConverter{TSource, TTarget}"/>
public class CachingConverterDecorator<TSource, TTarget> : IConverter<TSource, TTarget>
{
private readonly IConverter<TSource, TTarget> _baseConverter;
private readonly IDictionary<TSource, TTarget> _cache;
/// <summary>
/// <para>
/// Initializes a new <see cref="CachingConverterDecorator"/> instance.
/// </para>
/// <para></para>
/// </summary>
/// <param name="baseConverter">
/// <para>A base converter.</para>
/// <para></para>
/// </param>
/// <param name="cache">
/// <para>A cache.</para>
/// <para></para>
/// </param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public CachingConverterDecorator(IConverter<TSource, TTarget> baseConverter, IDictionary<TSource, TTarget> cache) => (_baseConverter, _cache) = (baseConverter, cache);
/// <summary>
/// <para>
/// Initializes a new <see cref="CachingConverterDecorator"/> instance.
/// </para>
/// <para></para>
/// </summary>
/// <param name="baseConverter">
/// <para>A base converter.</para>
/// <para></para>
/// </param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public CachingConverterDecorator(IConverter<TSource, TTarget> baseConverter) : this(baseConverter, new Dictionary<TSource, TTarget>()) { }
/// <summary>
/// <para>
/// Converts the source.
/// </para>
/// <para></para>
/// </summary>
/// <param name="source">
/// <para>The source.</para>
/// <para></para>
/// </param>
/// <returns>
/// <para>The target</para>
/// <para></para>
/// </returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public TTarget Convert(TSource source) => _cache.GetOrAdd(source, _baseConverter.Convert);
}
}