The R Project SVN R

Last modification

• Rev 50609 2009-11-30 01:05:43
• Author: jmc

• Log message:

  Changes to fix efficiency in dispatch, potential recursive loops, and
  incorrect signatures, all for S4 methods for primitive functions.
  
  1. A bug in get_primitive_methods prevented all quick dispatch of primitives from
  working. Fixing this exposed a problem in quickDispatch in methods
  that prevented matching methods with traiiling "missing" in the
  signature.
  
  2. A mechanism was added to temporarily turn off all dispatch of methods for
  primitives. The code for findInheritedMethods activates the
  mechanism. At the moment, this is just for efficiency, but in
  principle it could be needed to avoid recursive calls to
  findInheritedMethods.
  
  3. The signatures for "$" and "$<-" were modified to remove "name",
  since the grammar prevents general objects for this argument.
  
  Some additional changes were tested but not installed to allow a
  general signature in methods for "[", "[[" and their replacement
  versions. Problems found with the Matrix package for this change. See
  the commented calls to DiispatchAnyOrEval in src/main.