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using System;
using System.Reflection;
namespace System.Runtime.Serialization
{
static class CodeInterpreter
{
internal static object ConvertValue(object arg, Type source, Type target)
{
return InternalConvert(arg, source, target, false);
}
static bool CanConvert (TypeCode typeCode)
{
switch (typeCode)
{
case TypeCode.Boolean:
case TypeCode.Char:
case TypeCode.SByte:
case TypeCode.Byte:
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Int32:
case TypeCode.UInt32:
case TypeCode.Int64:
case TypeCode.UInt64:
case TypeCode.Single:
case TypeCode.Double:
return true;
}
return false;
}
static object InternalConvert(object arg, Type source, Type target, bool isAddress)
{
if (target == source)
return arg;
if (target.IsValueType)
{
if (source.IsValueType)
{
if (!CanConvert (Type.GetTypeCode (target)))
throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.NoConversionPossibleTo, DataContract.GetClrTypeFullName(target))));
else
return target;
}
else if (source.IsAssignableFrom(target))
return arg;
else
throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.IsNotAssignableFrom, DataContract.GetClrTypeFullName(target), DataContract.GetClrTypeFullName(source))));
}
else if (target.IsAssignableFrom(source))
return arg;
else if (source.IsAssignableFrom(target))
return arg;
else if (target.IsInterface || source.IsInterface)
return arg;
else
throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.IsNotAssignableFrom, DataContract.GetClrTypeFullName(target), DataContract.GetClrTypeFullName(source))));
}
public static object GetMember (MemberInfo memberInfo, object instance)
{
var pi = memberInfo as PropertyInfo;
if (pi != null)
return pi.GetValue (instance);
else
return ((FieldInfo) memberInfo).GetValue (instance);
}
public static void SetMember (MemberInfo memberInfo, object instance, object value)
{
var pi = memberInfo as PropertyInfo;
if (pi != null)
pi.SetValue (instance, value);
else
((FieldInfo) memberInfo).SetValue (instance, value);
}
}
}
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