reflection: Reflection operations

GetMember(instance, id)

Return a member of an instance. The id argument must be a Str object. Raise MemberError if the member is not defined. Example:

var range = 2 to 5
GetMember(range, "start")  -- 2

SetMember(instance, id, value)

Set the value of a member of an instance. The id argument must be a Str object. Raise MemberError if the member is not defined or if it is a method or a constant.

HasMember(instance, id)

Return a boolean indicating whether an instance has a specific member. The id argument must be a Str object.

TypeOf(instance)

Return a type object representing the type of the argument. TypeOf works for all values except nil; if the argument is nil, raise a ValueError exception. The returned object is a type object bound to the relevant class definition. Examples:

TypeOf(1)        -- std::Int
TypeOf([1, 2])   -- std::Array