80 lines
2.0 KiB
C#
80 lines
2.0 KiB
C#
using System;
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using System.Linq;
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using BizHawk.Common.ReflectionExtensions;
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namespace BizHawk.Client.ApiHawk
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{
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/// <summary>
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/// injects Apis into other classes
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/// </summary>
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public static class ApiInjector
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{
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/// <summary>
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/// clears all Apis from a target
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/// </summary>
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public static void ClearApis(object target)
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{
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Type targetType = target.GetType();
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object[] tmp = new object[1];
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foreach (var propinfo in
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targetType.GetPropertiesWithAttrib(typeof(RequiredApiAttribute))
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.Concat(targetType.GetPropertiesWithAttrib(typeof(OptionalApiAttribute))))
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{
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propinfo.GetSetMethod(true).Invoke(target, tmp);
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}
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}
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/// <summary>
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/// Feeds the target its required Apis.
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/// </summary>
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/// <returns>false if update failed</returns>
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public static bool UpdateApis(IExternalApiProvider source, object target)
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{
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Type targetType = target.GetType();
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object[] tmp = new object[1];
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foreach (var propinfo in targetType.GetPropertiesWithAttrib(typeof(RequiredApiAttribute)))
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{
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tmp[0] = source.GetApi(propinfo.PropertyType);
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if (tmp[0] == null)
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{
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return false;
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}
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propinfo.GetSetMethod(true).Invoke(target, tmp);
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}
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foreach (var propinfo in targetType.GetPropertiesWithAttrib(typeof(OptionalApiAttribute)))
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{
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tmp[0] = source.GetApi(propinfo.PropertyType);
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propinfo.GetSetMethod(true).Invoke(target, tmp);
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}
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return true;
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}
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/// <summary>
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/// Determines whether a target is available, considering its dependencies
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/// and the Apis provided by the emulator core.
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/// </summary>
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public static bool IsAvailable(IExternalApiProvider source, Type targetType)
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{
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return targetType.GetPropertiesWithAttrib(typeof(RequiredApiAttribute))
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.Select(pi => pi.PropertyType)
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.All(source.HasApi);
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}
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}
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[AttributeUsage(AttributeTargets.Property)]
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public class RequiredApiAttribute : Attribute
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{
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}
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[AttributeUsage(AttributeTargets.Property)]
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public class OptionalApiAttribute : Attribute
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{
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}
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}
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