Dear R Core Team, I have a question related to the programming interface for namespace object creation at run-time.
This is something that I need in the rdyncall package: During the dynamic linkage binding of a shared C library, an R namespace object is created that gets populated with call wrappers, symbolic constants and type information objects. For example, > dynport(SDL) # create namespace, populated with wrappers to SDL library > search() # gives a "package:SDL" populated with all kinds of wrappers to > the C functions, etc.. [1] ".GlobalEnv" "package:SDL" I was trying various alternatives to get package-behaviour implemented in transparent manner for the end-user. The current version uses real namespace environments with all sorts of advantages such as support for search(), detach() and '::'. Namespace object have certain conventions for fields, and there is currently no public interface available in 'base' for setting up such objects; The function "makeNamespace" in src/library/base/namespace.R is defined as local function to "loadNamespace". So I go about this problem by 'copying' the code. Recently, R-2.14 introduced a new mandatory field 'lazyData' which mades rdyncall broken. (By re-synchronizing with 'makeNamespace' it has been fixed in 0.7.4.) Would it be possible and feasible to make namespace-related management functions such as makeNamespace and sealNamespace available as an public accessible interface? Or at least accessible via ':::' ? I would also appreciate any hint/idea for alternative ways to implement the above described behaviour. Here is the link to the code used for creation of dynamic C binding namespaces: http://dyncall.org/svn/dyncall/trunk/bindings/R/rdyncall/R/dynport.R best wishes, - Daniel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
