protected virtual ParameterExpression GetParameter(Type type, string name)
{
var key = KeyMaker.GetHashCode(type, name);
ParameterExpression result = null;
if (!_params.TryGetValue(key, out result))
{
result = Expression.Parameter(type, name);
_params[key] = result;
}
return(result);
}
protected void AddHash(object item)
{
if (item is TypeInfo type)
{
var h = type.Name.GetHashCode();
var hashType = type.UnderlyingSystemType;
if (hashType != null && hashType.AssemblyQualifiedName != null)
{
h = KeyMaker.AddHashCode(h, hashType.AssemblyQualifiedName.GetHashCode());
}
Hash = KeyMaker.AddHashCode(Hash, h);
}
if (item is MemberInfo member)
{
var h = member.Name.GetHashCode();
var hashType = member.DeclaringType;
if (hashType != null && hashType.AssemblyQualifiedName != null)
{
h = KeyMaker.AddHashCode(h, hashType.AssemblyQualifiedName.GetHashCode());
}
Hash = KeyMaker.AddHashCode(Hash, h);
return;
}
if (item == null)
{
Hash = KeyMaker.AddHashCode(Hash, NullHashCode);
}
else
{
Hash = KeyMaker.AddHashCode(Hash, KeyMaker.GetHashCode(item));
}
}
