[PATCH 05/11] config: flatten each_inbox and iterate_start args

[Eric Wong <e@80x24.org>]

In Perl, we can simplify callers by passing a single array
all the way down the stack instead of a single array ref which
needs to be expanded every call.
---
 lib/PublicInbox/Config.pm     | 12 ++++++------
 lib/PublicInbox/ExtMsg.pm     |  7 +++----
 lib/PublicInbox/Watch.pm      | 13 ++++++-------
 lib/PublicInbox/WwwListing.pm | 13 +++++--------
 4 files changed, 20 insertions(+), 25 deletions(-)

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index ae9ad8de..f78115b6 100644
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -90,29 +90,29 @@ sub lookup_name ($$) {
 }
 
 sub each_inbox {
-	my ($self, $cb, $arg) = @_;
+	my ($self, $cb, @arg) = @_;
 	# may auto-vivify if config file is non-existent:
 	foreach my $section (@{$self->{-section_order}}) {
 		next if $section !~ m!\Apublicinbox\.([^/]+)\z!;
 		my $ibx = lookup_name($self, $1) or next;
-		$cb->($ibx, $arg);
+		$cb->($ibx, @arg);
 	}
 }
 
 sub iterate_start {
-	my ($self, $cb, $arg) = @_;
+	my ($self, $cb, @arg) = @_;
 	my $i = 0;
-	$self->{-iter} = [ \$i, $cb, $arg ];
+	$self->{-iter} = [ \$i, $cb, @arg ];
 }
 
 # for PublicInbox::DS::next_tick, we only call this is if
 # PublicInbox::DS is already loaded
 sub event_step {
 	my ($self) = @_;
-	my ($i, $cb, $arg) = @{$self->{-iter}};
+	my ($i, $cb, @arg) = @{$self->{-iter}};
 	my $section = $self->{-section_order}->[$$i++];
 	delete($self->{-iter}) unless defined($section);
-	eval { $cb->($self, $section, $arg) };
+	eval { $cb->($self, $section, @arg) };
 	warn "E: $@ in ${self}::event_step" if $@;
 	PublicInbox::DS::requeue($self) if defined($section);
 }
diff --git a/lib/PublicInbox/ExtMsg.pm b/lib/PublicInbox/ExtMsg.pm
index 5dffc65c..929737f1 100644
--- a/lib/PublicInbox/ExtMsg.pm
+++ b/lib/PublicInbox/ExtMsg.pm
@@ -74,8 +74,7 @@ sub search_partial ($$) {
 }
 
 sub ext_msg_i {
-	my ($other, $arg) = @_;
-	my ($cur, $mid, $ibxs, $found) = @$arg;
+	my ($other, $cur, $mid, $ibxs, $found) = @_;
 
 	return if $other->{name} eq $cur->{name} || !$other->base_url;
 
@@ -101,9 +100,9 @@ sub ext_msg {
 	eval { require PublicInbox::Msgmap };
 	my $ibxs = [];
 	my $found = [];
-	my $arg = [ $cur, $mid, $ibxs, $found ];
 
-	$ctx->{www}->{pi_config}->each_inbox(\&ext_msg_i, $arg);
+	$ctx->{www}->{pi_config}->each_inbox(\&ext_msg_i,
+						$cur, $mid, $ibxs, $found);
 
 	return exact($ctx, $found, $mid) if @$found;
 
diff --git a/lib/PublicInbox/Watch.pm b/lib/PublicInbox/Watch.pm
index 17786377..0f41dff2 100644
--- a/lib/PublicInbox/Watch.pm
+++ b/lib/PublicInbox/Watch.pm
@@ -133,8 +133,7 @@ sub _done_for_now {
 }
 
 sub remove_eml_i { # each_inbox callback
-	my ($ibx, $arg) = @_;
-	my ($self, $eml, $loc) = @$arg;
+	my ($ibx, $self, $eml, $loc) = @_;
 
 	eval {
 		# try to avoid taking a lock or unnecessary spawning
@@ -176,7 +175,7 @@ sub _remove_spam {
 	$path =~ /:2,[A-R]*S[T-Za-z]*\z/ or return;
 	my $eml = eml_from_path($path) or return;
 	local $SIG{__WARN__} = warn_ignore_cb();
-	$self->{config}->each_inbox(\&remove_eml_i, [ $self, $eml, $path ]);
+	$self->{config}->each_inbox(\&remove_eml_i, $self, $eml, $path);
 }
 
 sub import_eml ($$$) {
@@ -419,8 +418,8 @@ sub imap_import_msg ($$$$$) {
 		if ($flags =~ /\\Seen\b/) {
 			local $SIG{__WARN__} = warn_ignore_cb();
 			my $eml = PublicInbox::Eml->new($raw);
-			my $arg = [ $self, $eml, "$url UID:$uid" ];
-			$self->{config}->each_inbox(\&remove_eml_i, $arg);
+			$self->{config}->each_inbox(\&remove_eml_i,
+						$self, $eml, "$url UID:$uid");
 		}
 	} else {
 		die "BUG: destination unknown $inboxes";
@@ -967,8 +966,8 @@ sub nntp_fetch_all ($$$) {
 			}
 		} elsif ($inboxes eq 'watchspam') {
 			my $eml = PublicInbox::Eml->new(\$raw);
-			my $arg = [ $self, $eml, "$url ARTICLE $art" ];
-			$self->{config}->each_inbox(\&remove_eml_i, $arg);
+			$self->{config}->each_inbox(\&remove_eml_i,
+					$self, $eml, "$url ARTICLE $art");
 		} else {
 			die "BUG: destination unknown $inboxes";
 		}
diff --git a/lib/PublicInbox/WwwListing.pm b/lib/PublicInbox/WwwListing.pm
index 12b0d9ad..a7c7cbc1 100644
--- a/lib/PublicInbox/WwwListing.pm
+++ b/lib/PublicInbox/WwwListing.pm
@@ -12,21 +12,19 @@ use PublicInbox::ManifestJsGz;
 use bytes (); # bytes::length
 
 sub list_all_i {
-	my ($ibx, $arg) = @_;
-	my ($list, $hide_key) = @$arg;
+	my ($ibx, $list, $hide_key) = @_;
 	push @$list, $ibx unless $ibx->{-hide}->{$hide_key};
 }
 
 sub list_all ($$$) {
 	my ($self, $env, $hide_key) = @_;
 	my $list = [];
-	$self->{pi_config}->each_inbox(\&list_all_i, [ $list, $hide_key ]);
+	$self->{pi_config}->each_inbox(\&list_all_i, $list, $hide_key);
 	$list;
 }
 
 sub list_match_domain_i {
-	my ($ibx, $arg) = @_;
-	my ($list, $hide_key, $re) = @$arg;
+	my ($ibx, $list, $hide_key, $re) = @_;
 	if (!$ibx->{-hide}->{$hide_key} && grep(/$re/, @{$ibx->{url}})) {
 		push @$list, $ibx;
 	}
@@ -37,9 +35,8 @@ sub list_match_domain ($$$) {
 	my $list = [];
 	my $host = $env->{HTTP_HOST} // $env->{SERVER_NAME};
 	$host =~ s/:[0-9]+\z//;
-	my $arg = [ $list, $hide_key,
-		qr!\A(?:https?:)?//\Q$host\E(?::[0-9]+)?/!i ];
-	$self->{pi_config}->each_inbox(\&list_match_domain_i, $arg);
+	$self->{pi_config}->each_inbox(\&list_match_domain_i, $list, $hide_key,
+				qr!\A(?:https?:)?//\Q$host\E(?::[0-9]+)?/!i);
 	$list;
 }