diff options
Diffstat (limited to 'doc/ref/vm.texi')
-rw-r--r-- | doc/ref/vm.texi | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/doc/ref/vm.texi b/doc/ref/vm.texi index 03356c724..9936ad97d 100644 --- a/doc/ref/vm.texi +++ b/doc/ref/vm.texi @@ -1,6 +1,6 @@ @c -*-texinfo-*- @c This is part of the GNU Guile Reference Manual. -@c Copyright (C) 2008,2009,2010 +@c Copyright (C) 2008,2009,2010,2013 @c Free Software Foundation, Inc. @c See the file guile.texi for copying conditions. @@ -772,6 +772,7 @@ list. The list is then assigned to the @var{idx}th local variable. @end deffn @deffn Instruction bind-optionals/shuffle nreq nreq-and-opt ntotal +@deffnx Instruction bind-optionals/shuffle-or-br nreq nreq-and-opt ntotal offset Shuffle keyword arguments to the top of the stack, filling in the holes with @code{SCM_UNDEFINED}. Each argument is encoded over two bytes. @@ -783,6 +784,11 @@ the @var{nreq}th argument up to the @var{nreq-and-opt}th, and start shuffling when it sees the first keyword argument or runs out of positional arguments. +@code{bind-optionals/shuffle-or-br} does the same, except that it checks +if there are too many positional arguments before shuffling. If this is +the case, it jumps to @var{offset}, encoded using the normal three-byte +encoding. + Shuffling simply moves the keyword arguments past the total number of arguments, @var{ntotal}, which includes keyword and rest arguments. The free slots created by the shuffle are filled in with |