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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
namespace System.Reflection
{
public readonly partial struct CustomAttributeTypedArgument
{
public static bool operator ==(CustomAttributeTypedArgument left, CustomAttributeTypedArgument right) => left.Equals(right);
public static bool operator !=(CustomAttributeTypedArgument left, CustomAttributeTypedArgument right) => !left.Equals(right);
private readonly object? m_value;
private readonly Type m_argumentType;
public CustomAttributeTypedArgument(Type argumentType, object? value)
{
// value can be null.
if (argumentType == null)
throw new ArgumentNullException(nameof(argumentType));
m_value = (value is null) ? null : CanonicalizeValue(value);
m_argumentType = argumentType;
}
public CustomAttributeTypedArgument(object value)
{
// value cannot be null.
if (value == null)
throw new ArgumentNullException(nameof(value));
m_value = CanonicalizeValue(value);
m_argumentType = value.GetType();
}
public override string ToString() => ToString(false);
internal string ToString(bool typed)
{
if (m_argumentType == null)
return base.ToString();
if (ArgumentType.IsEnum)
return string.Format(typed ? "{0}" : "({1}){0}", Value, ArgumentType.FullName);
else if (Value == null)
return string.Format(typed ? "null" : "({0})null", ArgumentType.Name);
else if (ArgumentType == typeof(string))
return string.Format("\"{0}\"", Value);
else if (ArgumentType == typeof(char))
return string.Format("'{0}'", Value);
else if (ArgumentType == typeof(Type))
return string.Format("typeof({0})", ((Type)Value!).FullName);
else if (ArgumentType.IsArray)
{
IList<CustomAttributeTypedArgument> array = (IList<CustomAttributeTypedArgument>)Value!;
Type elementType = ArgumentType.GetElementType()!;
string result = string.Format(@"new {0}[{1}] {{ ", elementType.IsEnum ? elementType.FullName : elementType.Name, array.Count);
for (int i = 0; i < array.Count; i++)
{
result += string.Format(i == 0 ? "{0}" : ", {0}", array[i].ToString(elementType != typeof(object)));
}
result += " }";
return result;
}
return string.Format(typed ? "{0}" : "({1}){0}", Value, ArgumentType.Name);
}
public override int GetHashCode() => base.GetHashCode();
public override bool Equals(object? obj) => obj == (object)this;
public Type ArgumentType => m_argumentType;
public object? Value => m_value;
}
}
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