internal static ConstructorInfo GetValueTypeCtor(this Type type, ref List <Expression> args)
{
var cs = type.GetConstructors(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
foreach (var item in cs)
{
var pars = item.GetParameters();
JsonDeserializeCtorAttribute jsonDeserializeCtorAttribute = item.GetCustomAttribute <JsonDeserializeCtorAttribute>();
if (jsonDeserializeCtorAttribute != null)
{
args = new List <Expression>();
for (int i = 0; i < jsonDeserializeCtorAttribute._args.Length; i++)
{
args.Add(Expression.Constant(jsonDeserializeCtorAttribute._args[i], pars[i].ParameterType));
}
return(item);
}
}
return(null);
}
internal static ConstructorInfo GetClassCtor(this Type type, ref List <Expression> args)
{
var cs = type.GetConstructors(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
ConstructorInfo attrCtor = null, publicNoArgsCtor = null, privateNoArgsCtor = null, publicArgsCtor = null, privateArgsCtor = null;
List <Expression> attrCtorArgs = null; ParameterInfo[] publicArgsCtorParas = null, privateArgsCtorParas = null;
foreach (var item in cs)
{
var pars = item.GetParameters();
JsonDeserializeCtorAttribute jsonDeserializeCtorAttribute = item.GetCustomAttribute <JsonDeserializeCtorAttribute>();
if (jsonDeserializeCtorAttribute != null)
{
attrCtorArgs = new List <Expression>();
attrCtor = item;
for (int i = 0; i < jsonDeserializeCtorAttribute._args.Length; i++)
{
attrCtorArgs.Add(Expression.Constant(jsonDeserializeCtorAttribute._args[i], pars[i].ParameterType));
}
break;
}
if (item.IsPublic)
{
if (pars.Length == 0)
{
publicNoArgsCtor = item;
}
else if (publicArgsCtor == null || pars.Length < publicArgsCtor.GetParameters().Length)
{
publicArgsCtor = item;
publicArgsCtorParas = pars;
}
}
else if (item.IsPrivate)
{
if (pars.Length == 0)
{
privateNoArgsCtor = item;
}
else if (privateArgsCtor == null || pars.Length < privateArgsCtor.GetParameters().Length)
{
privateArgsCtor = item;
privateArgsCtorParas = pars;
}
}
}
if (attrCtor != null)
{
args = attrCtorArgs;
return(attrCtor);
}
if (publicNoArgsCtor != null)
{
args = null;
return(publicNoArgsCtor);
}
if (privateNoArgsCtor != null)
{
args = null;
return(privateNoArgsCtor);
}
if (publicArgsCtor != null)
{
args = new List <Expression>();
for (int i = 0; i < publicArgsCtorParas.Length; i++)
{
object value = null;
var paraType = publicArgsCtorParas[i].ParameterType;
if (paraType.IsValueType)
{
value = Activator.CreateInstance(paraType);
}
args.Add(Expression.Constant(value, paraType));
}
return(publicArgsCtor);
}
else //(privateArgsCtor != null)
{
args = new List <Expression>();
for (int i = 0; i < publicArgsCtorParas.Length; i++)
{
object value = null;
var paraType = publicArgsCtorParas[i].ParameterType;
if (paraType.IsValueType)
{
value = Activator.CreateInstance(paraType);
}
args.Add(Expression.Constant(value, paraType));
}
return(privateArgsCtor);
}
}
