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add Utils/Reflection

This commit is contained in:
ig 2023-04-05 17:43:27 +02:00
parent d2c83ddc7f
commit 4b8c4f1942
6 changed files with 261 additions and 0 deletions
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26
csharp/Lib/Utils/Reflection/DataMember.cs Normal file
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namespace InnovEnergy.Lib.Utils.Reflection;
public abstract class DataMember : Member
{
public abstract Object? Get();
public abstract void Set(Object value);
public abstract Boolean IsWriteable { get; }
public abstract Boolean IsReadable { get; }
}
public static class DataMembers
{
public static IEnumerable<DataMember> OfInstance<T>(T instance) where T : notnull
{
return instance.GetDataMembers();
}
public static IEnumerable<DataMember> GetDataMembers<T>(this T instance) where T : notnull
{
var fields = instance.GetFields();
var props = instance.GetProperties();
return fields.Concat<DataMember>(props);
}
}

49
csharp/Lib/Utils/Reflection/Field.cs Normal file
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using System.Reflection;
using static System.Reflection.BindingFlags;
namespace InnovEnergy.Lib.Utils.Reflection;
public class Field : DataMember
{
private readonly Object? _Instance;
private readonly FieldInfo _FieldInfo;
public override String Name => _FieldInfo.Name;
public override Type Type => _FieldInfo.FieldType;
public override Boolean IsPublic => _FieldInfo.IsPublic;
public override Boolean IsPrivate => _FieldInfo.IsPrivate;
public override Boolean IsStatic => _FieldInfo.IsStatic;
public override Boolean IsWriteable => true;
public override Boolean IsReadable => true;
public override IEnumerable<Attribute> Attributes => _FieldInfo
.GetCustomAttributes(inherit: false)
.OfType<Attribute>();
internal Field(Object? instance, FieldInfo fieldInfo)
{
_Instance = instance;
_FieldInfo = fieldInfo;
}
public override Object? Get() => _FieldInfo.GetValue(_Instance) ;
public override void Set(Object value) => _FieldInfo.SetValue(_Instance, value);
}
public static class Fields
{
public static IEnumerable<Field> GetFields<T>(this T instance) where T : notnull
{
return instance
.GetType()
.GetFields(Instance | Static | Public | NonPublic)
.Select(fi => new Field(fi.IsStatic ? null : instance, fi));
}
public static IEnumerable<Field> OfInstance<T>(T instance) where T : notnull
{
return instance.GetFields();
}
}

33
csharp/Lib/Utils/Reflection/Member.cs Normal file
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namespace InnovEnergy.Lib.Utils.Reflection;
public abstract class Member
{
public abstract String Name { get; }
public abstract Type Type { get; }
public abstract Boolean IsPublic { get; }
public abstract Boolean IsPrivate { get; }
public abstract Boolean IsStatic { get; }
public abstract IEnumerable<Attribute> Attributes { get; }
}
public static class Members
{
public static IEnumerable<Member> OfInstance<T>(T instance) where T : notnull
{
return instance.GetMembers();
}
public static IEnumerable<Member> GetMembers<T>(this T instance) where T : notnull
{
var fields = instance.GetFields();
var props = instance.GetProperties();
var methods = instance.GetMethods();
return fields
.Concat<Member>(props)
.Concat(methods);
}
}

52
csharp/Lib/Utils/Reflection/Method.cs Normal file
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using System.Reflection;
using static System.Reflection.BindingFlags;
namespace InnovEnergy.Lib.Utils.Reflection;
public class Method : Member
{
private readonly MethodInfo _MethodInfo;
private readonly Object? _Instance;
public override Boolean IsPublic => _MethodInfo.IsPublic;
public override Boolean IsPrivate => _MethodInfo.IsPrivate;
public override Boolean IsStatic => _MethodInfo.IsStatic;
public override String Name => _MethodInfo.Name;
public override Type Type => _MethodInfo.ReturnType;
public override IEnumerable<Attribute> Attributes => _MethodInfo.GetCustomAttributes();
public IEnumerable<Parameter> Parameters => _MethodInfo
.GetParameters()
.Select(i => new Parameter(i));
internal Method(Object? instance, MethodInfo fieldInfo)
{
_MethodInfo = fieldInfo;
_Instance = instance;
}
public Object? Invoke(params Object[] parameters)
{
return _MethodInfo.Invoke(_Instance, parameters);
}
}
public static class Methods
{
public static IEnumerable<Method> GetMethods<T>(this T instance) where T : notnull
{
return typeof(T)
.GetMethods(Instance | Static | Public | NonPublic)
.Select(mi => new Method(mi.IsStatic ? null : instance, mi));
}
public static IEnumerable<Method> OfInstance<T>(T instance) where T : notnull
{
return instance.GetMethods();
}
}

14
csharp/Lib/Utils/Reflection/Parameter.cs Normal file
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using System.Reflection;
namespace InnovEnergy.Lib.Utils.Reflection
{
public class Parameter
{
private readonly ParameterInfo _ParameterInfo;
internal Parameter(ParameterInfo parameterInfo) => _ParameterInfo = parameterInfo;
public Type Type => _ParameterInfo.ParameterType;
public String Name => _ParameterInfo.Name ?? "<no name>";
}
}

87
csharp/Lib/Utils/Reflection/Property.cs Normal file
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using System.Reflection;
using static System.Reflection.BindingFlags;
namespace InnovEnergy.Lib.Utils.Reflection
{
public class Property : DataMember
{
private readonly Object? _Instance;
private readonly PropertyInfo _PropertyInfo;
internal Property(Object? instance, PropertyInfo propertyInfo)
{
_Instance = instance;
_PropertyInfo = propertyInfo;
}
public override Boolean IsWriteable => _PropertyInfo.CanWrite;
public override Boolean IsReadable => _PropertyInfo.CanRead;
public override String Name => _PropertyInfo.Name;
public override Type Type => _PropertyInfo.PropertyType;
public override Boolean IsPublic => _PropertyInfo.IsPublic();
public override Boolean IsPrivate => _PropertyInfo.IsPrivate();
public override Boolean IsStatic => _PropertyInfo.IsStatic();
public override IEnumerable<Attribute> Attributes => GetAttributes<Attribute>();
public override Object? Get() => _PropertyInfo.GetValue(_Instance);
public override void Set(Object value) => _PropertyInfo.SetValue(_Instance, value);
public IEnumerable<T> GetAttributes<T> () where T : Attribute => _PropertyInfo
.GetCustomAttributes(inherit: false)
.OfType<T>();
public Boolean HasAttribute<T> () where T : Attribute => GetAttributes<T>().Any();
}
public static class Properties
{
public static IEnumerable<Property> GetProperties<T>(this T instance) where T : notnull
{
return instance
.GetType()
.GetProperties(Instance | Static | Public | NonPublic)
.Where(p => p.GetIndexParameters().Length == 0) // no indexers please
.Select(pi => new Property(pi.IsStatic() ? null : instance, pi));
}
public static IEnumerable<Property> OfInstance<T>(T instance) where T : notnull
{
return instance.GetProperties();
}
}
internal static class PropertyInfoExtensions
{
public static Boolean IsStatic(this PropertyInfo i)
{
var getter = i.GetMethod;
var setter = i.SetMethod;
return (getter is not null && getter.IsStatic)
|| (setter is not null && setter.IsStatic);
}
public static Boolean IsPublic(this PropertyInfo i)
{
var getter = i.GetMethod;
var setter = i.SetMethod;
return (getter is not null && getter.IsPublic)
|| (setter is not null && setter.IsPublic);
}
public static Boolean IsPrivate(this PropertyInfo i)
{
var getter = i.GetMethod;
var setter = i.SetMethod;
return (getter is not null && getter.IsPrivate)
|| (setter is not null && setter.IsPrivate);
}
}
}