B::Deparse can help:
$ perl -wMstrict -MO=Deparse
sub find_symbol {
got to here today
}
__END__
BEGIN { $^W = 1; }
use strict;
sub find_symbol {
'to'->got('today'->here);
}
- syntax OK
$ perl -wMstrict -MO=Deparse
sub find_symbol {
I got to here today
}
__END__
Bareword "today" not allowed while "strict subs" in use at - line 2.
- had compilation errors.
BEGIN { $^W = 1; }
use strict;
sub find_symbol {
'got'->I('here'->to('today'));
}
So the first one is just the Indirect Object Syntax, twice, while the second one assumes an extra parameter, and when that's a number it's fine; when it's a bareword it's not (under strict, at least). It just depends on whether the number of barewords is even or odd :-)
$ perl -wMstrict -MO=Deparse -e 'sub x { foo bar }'
BEGIN { $^W = 1; }
use strict;
sub x {
'bar'->foo;
}
-e syntax OK
$ perl -wMstrict -MO=Deparse -e 'sub x { foo bar quz }'
Bareword "quz" not allowed while "strict subs" in use at -e line 1.
-e had compilation errors.
BEGIN { $^W = 1; }
use strict;
sub x {
'bar'->foo('quz');
}
$ perl -wMstrict -MO=Deparse -e 'sub x { foo bar quz baz }'
BEGIN { $^W = 1; }
use strict;
sub x {
'bar'->foo('baz'->quz);
}
-e syntax OK
$ perl -wMstrict -MO=Deparse -e 'sub x { foo bar quz baz bleep }'
Bareword "bleep" not allowed while "strict subs" in use at -e line 1.
-e had compilation errors.
BEGIN { $^W = 1; }
use strict;
sub x {
'bar'->foo('baz'->quz('bleep'));
}
None of the code actually runs, of course :-)
BTW, maybe you want to use the "Yada Yada operator" (...) for unfinished code? (Perl v5.12 and up)
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