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// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT license.

using System;

using System.Globalization;

using System.Reflection;

using Microsoft.ClearScript.Util;

namespace Microsoft.ClearScript

{

internal sealed class ScriptMethod : HostTarget, IReflect

{

private readonly ScriptItem target;

private readonly string name;

public ScriptMethod(ScriptItem target, string name)

{

this.target = target;

this.name = name;

}

public object Invoke(params object[] args)

{

return target.InvokeMethod(name, args);

}

#region Object overrides

public override string ToString()

{

return MiscHelpers.FormatInvariant("ScriptMethod:{0}", name);

}

#endregion

#region HostTarget overrides

public override Type Type => typeof(void);

public override object Target => this;

public override object InvokeTarget => null;

public override object DynamicInvokeTarget => null;

public override HostTargetFlags GetFlags(IHostContext context)

{

return HostTargetFlags.None;

}

public override bool TryInvoke(IHostContext context, BindingFlags invokeFlags, object[] args, object[] bindArgs, out object result)

{

result = target.InvokeMethod(name, args);

return true;

}

public override Invocability GetInvocability(IHostContext context, BindingFlags bindFlags, bool ignoreDynamic)

{

return Invocability.Delegate;

}

#endregion

#region IReflect implementation

MethodInfo IReflect.GetMethod(string methodName, BindingFlags bindFlags, Binder binder, Type[] types, ParameterModifier[] modifiers)

{

throw new NotImplementedException();

}

MethodInfo IReflect.GetMethod(string methodName, BindingFlags bindFlags)

{

throw new NotImplementedException();

}

MethodInfo[] IReflect.GetMethods(BindingFlags bindFlags)

{

throw new NotImplementedException();

}

FieldInfo IReflect.GetField(string fieldName, BindingFlags bindFlags)

{

throw new NotImplementedException();

}

FieldInfo[] IReflect.GetFields(BindingFlags bindFlags)

{

throw new NotImplementedException();

}

PropertyInfo IReflect.GetProperty(string propertyName, BindingFlags bindFlags)

{

throw new NotImplementedException();

}

PropertyInfo IReflect.GetProperty(string propertyName, BindingFlags bindFlags, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)

{

throw new NotImplementedException();

}

PropertyInfo[] IReflect.GetProperties(BindingFlags bindFlags)

{

throw new NotImplementedException();

}

MemberInfo[] IReflect.GetMember(string memberName, BindingFlags bindFlags)

{

// This occurs during VB-based dynamic script item invocation. It was not observed

// before script items gained an IReflect/IExpando implementation that exposes

// script item properties as fields. Apparently VB's dynamic invocation support not

// only recognizes IReflect/IExpando but actually favors it over DynamicObject.

return typeof(ScriptMethod).GetMember(memberName.ToNonBlank("Invoke"), bindFlags);

}

MemberInfo[] IReflect.GetMembers(BindingFlags bindFlags)

{

throw new NotImplementedException();

}

object IReflect.InvokeMember(string memberName, BindingFlags invokeFlags, Binder binder, object invokeTarget, object[] args, ParameterModifier[] modifiers, CultureInfo culture, string[] namedParameters)

{

throw new NotImplementedException();

}

Type IReflect.UnderlyingSystemType => throw new NotImplementedException();

#endregion

}

}