diff options
Diffstat (limited to 'contrib/perl5/ext/B/ramblings/flip-flop')
| -rw-r--r-- | contrib/perl5/ext/B/ramblings/flip-flop | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/contrib/perl5/ext/B/ramblings/flip-flop b/contrib/perl5/ext/B/ramblings/flip-flop index 183d541..e0cb8ff 100644 --- a/contrib/perl5/ext/B/ramblings/flip-flop +++ b/contrib/perl5/ext/B/ramblings/flip-flop @@ -1,21 +1,24 @@ PP(pp_range) { if (GIMME == G_ARRAY) - return cCONDOP->op_true; - return SvTRUEx(PAD_SV(op->op_targ)) ? cCONDOP->op_false : cCONDOP->op_true; + return NORMAL; + if (SvTRUEx(PAD_SV(PL_op->op_targ))) + return cLOGOP->op_other; + else + return NORMAL; } -pp_range is a CONDOP. -In array context, it just returns op_true. +pp_range is a LOGOP. +In array context, it just returns op_next. In scalar context it checks the truth of targ and returns -op_false if true, op_true if false. +op_other if true, op_next if false. flip is an UNOP. -It "looks after" its child which is always a pp_range CONDOP. -In array context, it just returns the child's op_false. +It "looks after" its child which is always a pp_range LOGOP. +In array context, it just returns the child's op_other. In scalar context, there are three possible outcomes: (1) set child's targ to 1, our targ to 1 and return op_next. - (2) set child's targ to 1, our targ to 0, sp-- and return child's op_false. + (2) set child's targ to 1, our targ to 0, sp-- and return child's op_other. (3) Blank targ and TOPs and return op_next. Case 1 happens for a "..." with a matching lineno... or true TOPs. Case 2 happens for a ".." with a matching lineno... or true TOPs. @@ -37,14 +40,14 @@ Case 3 happens for a non-matching lineno or false TOPs. /* range */ if (SvTRUE(curpad[op->op_targ])) - goto label(op_false); -/* op_true */ + goto label(op_other); +/* op_next */ ... /* flip */ -/* For "..." returns op_next. For ".." returns op_next or op_first->op_false */ +/* For "..." returns op_next. For ".." returns op_next or op_first->op_other */ /* end of basic block */ goto out; -label(range op_false): +label(range op_other): ... /* flop */ out: |
