29 lines
985 B
C#
29 lines
985 B
C#
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using System;
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using System.Collections.Generic;
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namespace QFSW.QC
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{
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/// <summary>
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/// Parser for all types inheriting from a single type.
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/// Caches results and reuses them if the incoming string has already been parsed.
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/// </summary>
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/// <typeparam name="T">Base type of the types to parse.</typeparam>
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public abstract class PolymorphicCachedQcParser<T> : PolymorphicQcParser<T> where T : class
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{
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private readonly Dictionary<(string, Type), T> _cacheLookup = new Dictionary<(string, Type), T>();
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public override object Parse(string value, Type type, Func<string, Type, object> recursiveParser)
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{
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(string value, Type type) key = (value, type);
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if (_cacheLookup.ContainsKey(key))
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{
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return _cacheLookup[key];
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}
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T result = (T)base.Parse(value, type, recursiveParser);
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_cacheLookup[key] = result;
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return result;
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}
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}
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}
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