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| author | Nicholas Clark <nick@ccl4.org> | 2007-09-06 09:18:41 +0000 |
|---|---|---|
| committer | Nicholas Clark <nick@ccl4.org> | 2007-09-06 09:18:41 +0000 |
| commit | c5917253cfa0ec36b4c868a1582baaaab99eb0d0 (patch) | |
| tree | 617731b471122ffb901814d1a2cec921fd95e1a9 /pp_proto.h | |
| parent | 5f0a87760bb9130fbd7579236f81db0729b54496 (diff) | |
| download | perl-c5917253cfa0ec36b4c868a1582baaaab99eb0d0.tar.gz | |
Make state $zok = slosh(); behave as the Perl 6 design with an implicit
START block. First time through, call slosh() and assign to $zok.
Subsequently neither call slosh() nor assign to $zok. Adds a new op
ONCE to control the conditonal call and assign. No change to list
context, so state ($zok) = slosh() and (state $zok) = ... etc will
still repeatedly evaluate and assign. [Can't fix that before 5.10]
Use as an RVALUE is as Larry's design - my $boff = state $zok = ...;
will evaluate, assign and return first time, and subsequently act as if
it were written my $boff = $zok;
FIXME - state $zok = ...; won't deparse - I believe op->op_last isn't
being correctly set on the sassign, but I don't know how to fix this.
This change may be backed out before 5.10.
p4raw-id: //depot/perl@31798
Diffstat (limited to 'pp_proto.h')
| -rw-r--r-- | pp_proto.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pp_proto.h b/pp_proto.h index 431992c0b0..3a96e32837 100644 --- a/pp_proto.h +++ b/pp_proto.h @@ -405,5 +405,6 @@ PERL_PPDEF(Perl_pp_egrent) PERL_PPDEF(Perl_pp_getlogin) PERL_PPDEF(Perl_pp_syscall) PERL_PPDEF(Perl_pp_lock) +PERL_PPDEF(Perl_pp_once) /* ex: set ro: */ |