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|
#!perl -w
use strict;
use Test::More tests => 4;
use Data::Dumper;
use Text::Balanced 'extract_multiple', 'extract_quotelike';
require Filter::signatures;
# Mimic parts of the setup of Filter::Simple
my $extractor =
$Filter::Simple::placeholder = $Filter::Simple::placeholder
= qr/\Q$;\E(.{4})\Q$;\E/s;
# Anonymous
$_ = <<'SUB';
sub (
$name
, $value
) {
return "'$name' is '$value'"
};
SUB
Filter::signatures::transform_arguments();
is $_, <<'RESULT', "Multiline signatures get converted for anonymous subs";
sub { my ($name,$value)=@_;();
return "'$name' is '$value'"
};
RESULT
# Named
$_ = <<'SUB';
sub foo
(
$name
, $value
) {
return "'$name' is '$value'"
};
SUB
Filter::signatures::transform_arguments();
is $_, <<'RESULT', "Multiline signatures get converted for named subroutines";
sub foo { my ($name,$value)=@_;();
return "'$name' is '$value'"
};
RESULT
# Multiline defaults
$_ = <<'SUB';
sub (
$name
, $value
='bar'
) {
return "'$name' is '$value'"
};
SUB
Filter::signatures::transform_arguments();
is $_, <<'RESULT', "Multiline default values";
sub { my ($name,$value)=@_;$value = 'bar' if @_ <= 1;();
return "'$name' is '$value'"
};
RESULT
# Weirdo comments
# Filter::Simple resp. Text::Balanced do that filtering for us
$_ = <<'SUB';
sub foo
(
$name # foo
, $value # bar
) {
return "'$name' is '$value'"
};
SUB
# Replicate the setup that Filter::Simple does for us:
our @components;
no warnings 'once';
local *components = \@Filter::Simple::components;
my $comment = qr/(?<![\$\@%])#.*/;
my $ncws = qr/\s+/;
my $EOP = qr/\n\n|\Z/;
my $CUT = qr/\n=cut.*$EOP/;
my $pod_or_DATA = qr/
^=(?:head[1-4]|item) .*? $CUT
| ^=pod .*? $CUT
| ^=for .*? $CUT
| ^=begin .*? $CUT
| ^__(DATA|END)__\r?\n.*
/smx;
my $id = qr/\b(?!([ysm]|q[rqxw]?|tr)\b)\w+/;
my $variable = qr{
[\$*\@%]\s*
\{\s*(?!::)(?:\d+|[][&`'#+*./|,";%=~:?!\@<>()-]|\^[A-Z]?)\}
| (?:\$#?|[*\@\%]|\\&)\$*\s*
(?: \{\s*(?:\^(?=[A-Z_]))?(?:\w|::|'\w)*\s*\}
| (?:\^(?=[A-Z_]))?(?:\w|::|'\w)*
| (?=\{) # ${ block }
)
)
| \$\s*(?!::)(?:\d+|[][&`'#+*./|,";%=~:?!\@<>()-]|\^[A-Z]?)
}x;
my $code_no_comments = [ { DONT_MATCH => $comment },
$ncws, { DONT_MATCH => $pod_or_DATA }, $variable,
$id, { DONT_MATCH => \&extract_quotelike } ];
my $instr;
for (Text::Balanced::extract_multiple($_,$code_no_comments)) {
if (ref()) { push @components, $_; $instr=0 }
elsif ($instr) { $components[-1] .= $_ }
else { push @components, $_; $instr=1 }
};
my $count = 0;
$_ = join "",
map { ref $_ ? $;.pack('N',$count++).$; : $_ }
@components;
@components = grep { ref $_ } @components;
Filter::signatures::transform_arguments();
# Now restore all the surviving placeholders:
s/$extractor/${$components[unpack('N',$1)]}/g;
is $_, <<'RESULT', "Multiline signatures with comments get converted";
sub foo { my ($name,$value)=@_;();
return "'$name' is '$value'"
};
RESULT
|
