108 lines
3.7 KiB
C#
108 lines
3.7 KiB
C#
#if !NO_RUNTIME
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using System;
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using System.Reflection;
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namespace ProtoBuf.Meta
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{
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internal abstract class AttributeMap
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{
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#if DEBUG
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[Obsolete("Please use AttributeType instead")]
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new public Type GetType() => AttributeType;
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#endif
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public override string ToString() => AttributeType?.FullName ?? "";
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public abstract bool TryGet(string key, bool publicOnly, out object value);
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public bool TryGet(string key, out object value)
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{
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return TryGet(key, true, out value);
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}
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public abstract Type AttributeType { get; }
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public static AttributeMap[] Create(TypeModel model, Type type, bool inherit)
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{
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#if COREFX || PROFILE259
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Attribute[] all = System.Linq.Enumerable.ToArray(System.Linq.Enumerable.OfType<Attribute>(type.GetTypeInfo().GetCustomAttributes(inherit)));
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#else
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object[] all = type.GetCustomAttributes(inherit);
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#endif
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AttributeMap[] result = new AttributeMap[all.Length];
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for(int i = 0 ; i < all.Length ; i++)
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{
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result[i] = new ReflectionAttributeMap((Attribute)all[i]);
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}
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return result;
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}
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public static AttributeMap[] Create(TypeModel model, MemberInfo member, bool inherit)
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{
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#if COREFX || PROFILE259
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Attribute[] all = System.Linq.Enumerable.ToArray(System.Linq.Enumerable.OfType<Attribute>(member.GetCustomAttributes(inherit)));
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#else
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object[] all = member.GetCustomAttributes(inherit);
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#endif
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AttributeMap[] result = new AttributeMap[all.Length];
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for(int i = 0 ; i < all.Length ; i++)
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{
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result[i] = new ReflectionAttributeMap((Attribute)all[i]);
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}
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return result;
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}
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public static AttributeMap[] Create(TypeModel model, Assembly assembly)
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{
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#if COREFX || PROFILE259
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Attribute[] all = System.Linq.Enumerable.ToArray(assembly.GetCustomAttributes());
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#else
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const bool inherit = false;
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object[] all = assembly.GetCustomAttributes(inherit);
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#endif
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AttributeMap[] result = new AttributeMap[all.Length];
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for(int i = 0 ; i < all.Length ; i++)
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{
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result[i] = new ReflectionAttributeMap((Attribute)all[i]);
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}
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return result;
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}
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public abstract object Target { get; }
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private sealed class ReflectionAttributeMap : AttributeMap
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{
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private readonly Attribute attribute;
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public ReflectionAttributeMap(Attribute attribute)
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{
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this.attribute = attribute;
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}
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public override object Target => attribute;
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public override Type AttributeType => attribute.GetType();
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public override bool TryGet(string key, bool publicOnly, out object value)
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{
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MemberInfo[] members = Helpers.GetInstanceFieldsAndProperties(attribute.GetType(), publicOnly);
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foreach (MemberInfo member in members)
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{
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if (string.Equals(member.Name, key, StringComparison.OrdinalIgnoreCase))
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{
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if (member is PropertyInfo prop) {
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value = prop.GetValue(attribute, null);
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return true;
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}
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if (member is FieldInfo field) {
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value = field.GetValue(attribute);
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return true;
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}
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throw new NotSupportedException(member.GetType().Name);
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}
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}
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value = null;
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return false;
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}
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}
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}
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}
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#endif |