41 lines
1.2 KiB
C#
41 lines
1.2 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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namespace RelationsInspector.Backend.AutoBackend
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{
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public class ReflectionUtil
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{
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public static IEnumerable<FieldInfo> GetAttributeFields<P, S>()
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{
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return typeof( P )
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.GetFields( BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance )
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.Where( fInfo => HasAttribute( fInfo, typeof( S ) ) );
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}
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static bool HasAttribute( MemberInfo mInfo, Type attrType )
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{
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return mInfo.GetCustomAttributes( attrType, false ).Any();
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}
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public static IEnumerable<T> GetValues<T>( FieldInfo fInfo, T fObj ) where T : class
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{
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// how to get T objects out of different field types
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var extractValues = new Dictionary<Type, Func<object, IEnumerable<T>>>()
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{
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{typeof(T), obj => new T[] { obj as T } },
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{typeof(List<T>), obj => ( obj as List<T> ) ?? Enumerable.Empty<T>() },
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{typeof(T[]), obj => ( obj as T[] ) ?? Enumerable.Empty<T>() }
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};
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if ( !extractValues.ContainsKey( fInfo.FieldType ) )
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return Enumerable.Empty<T>();
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return extractValues[ fInfo.FieldType ]
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.Invoke( fInfo.GetValue( fObj ) )
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.Where( v => v != null );
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}
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}
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}
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