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ObjectExtensions.cs
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ObjectExtensions.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using ObjectToTest.Arguments;
using ObjectToTest.Constructors;
namespace ObjectToTest
{
public static class ObjectExtensions
{
public static string ToTest(this object @object)
{
return new ObjectAsConstructor(
@object ?? throw new ArgumentNullException(nameof(@object))
).ToString();
}
/*
* @todo #80 60m/DEV Define approach for formatting.
* Possible option:
* IDecompiledCodeAsString|string object.ToString(IFormat), where IFormat can be abstract interface with implementation for each formatting rule.
*/
public static string ToTestWellFormatted(this object @object)
{
throw new NotImplementedException();
}
internal static string ToStringForInitialization(this object? @object)
{
string valueStr;
if (@object is null)
{
valueStr = "null";
}
else if (@object.IsPrimitive())
{
if (@object is string)
{
return $"\"{@object}\"";
}
if (@object is Enum)
{
return $"{@object.GetType().Name}.{@object}";
}
valueStr = @object.ToString();
}
else
{
valueStr = @object.ToTest();
}
return valueStr;
}
internal static IConstructor Constructor(
this object? @object,
IArguments sharedArguments)
{
if (@object == null)
{
return new NullConstructor();
}
if (@object.IsDelegate())
{
return new DelegateConstructor(@object);
}
if (@object.IsPrimitive())
{
return new ValueTypeConstructor(@object);
}
if (@object.IsCollection())
{
return new CollectionConstructor(@object);
}
if (@object.IsSingleton())
{
return new SingletonConstructor(@object);
}
return @object
.Constructors(sharedArguments)
.FirstOrDefault(c => c.IsValid)
?? new InvalidConstructor(@object);
}
internal static IEnumerable<IConstructor> Constructors(
this object @object,
IArguments sharedArguments)
{
return @object.Constructors(
constructor =>
constructor.GetParameters().Any()
? new ParametrizedConstructor(@object, constructor, sharedArguments)
: new DefaultConstructor(@object, sharedArguments)
);
}
internal static IEnumerable<IConstructor> Constructors(
this object @object,
Func<ConstructorInfo, IConstructor> map)
{
return @object
.Constructors()
.Select(ctorInfo => map(ctorInfo));
}
internal static IArgument AsSharedArgument(this object @object, IArguments sharedArguments)
{
return new SharedArgument(
new Argument(
VariableName(@object),
@object,
@object.Constructor(sharedArguments)
)
);
}
internal static List<object> SharedObjects(this object @object)
{
return new SharedObjects(@object).ToList();
}
internal static bool HasCircularReference(this object @object)
{
if (!@object.IsSingleton())
{
foreach (var value in @object.Values())
{
if (value != null && value.ContainsDeep(@object))
{
return true;
}
}
}
return false;
}
internal static bool IsDelegate(this object @object)
{
return @object is Delegate;
}
internal static bool IsSingleton(this object? @object)
{
if (@object != null)
{
var objectType = @object.GetType();
if (!objectType.IsValueType && !objectType.Constructors().Any(c => c.IsPublic))
{
return objectType
.GetProperties(BindingFlags.Static | BindingFlags.Public)
.Any(p => p.PropertyType == objectType && p.CanRead);
}
}
return false;
}
private static string VariableName(object @object)
{
return Char.ToLower(@object.GetType().Name[0]) + @object.GetType().Name.Substring(1);
}
}
}