package HTML::Zoom::FilterBuilder;
-use Devel::Dwarn;
-
use strict;
use warnings FATAL => 'all';
+use base qw(HTML::Zoom::SubObject);
use HTML::Zoom::CodeStream;
-sub new { bless({}, shift) }
-
sub _stream_from_code {
- HTML::Zoom::CodeStream->new({ code => $_[1] })
+ shift->_zconfig->stream_utils->stream_from_code(@_)
}
sub _stream_from_array {
- shift; # lose $self
- HTML::Zoom::CodeStream->from_array(@_)
+ shift->_zconfig->stream_utils->stream_from_array(@_)
}
sub _stream_from_proto {
- my ($self, $proto) = @_;
- my $ref = ref $proto;
- if (not $ref) {
- return $self->_stream_from_array({ type => 'TEXT', raw => $proto });
- } elsif ($ref eq 'ARRAY') {
- return $self->_stream_from_array(@$proto);
- } elsif ($ref eq 'CODE') {
- return $proto->();
- } elsif ($ref eq 'SCALAR') {
- require HTML::Zoom::Parser::BuiltIn;
- return HTML::Zoom::Parser::BuiltIn->html_to_stream($$proto);
- }
- die "What the hell is $proto and how should I turn a $ref into a stream?";
+ shift->_zconfig->stream_utils->stream_from_proto(@_)
}
sub _stream_concat {
- shift->_stream_from_array(@_)->flatten;
+ shift->_zconfig->stream_utils->stream_concat(@_)
+}
+
+sub _flatten_stream_of_streams {
+ shift->_zconfig->stream_utils->flatten_stream_of_streams(@_)
}
sub set_attribute {
sub collect {
my ($self, $options) = @_;
- my ($into, $passthrough, $inside) = @{$options}{qw(into passthrough inside)};
+ my ($into, $passthrough, $content, $filter) =
+ @{$options}{qw(into passthrough content filter)};
sub {
my ($evt, $stream) = @_;
# We wipe the contents of @$into here so that other actions depending
# I -suspect- it's better for that state reset to be managed here; if it
# ever becomes painful the decision should be revisited
if ($into) {
- @$into = $inside ? () : ($evt);
+ @$into = $content ? () : ($evt);
}
if ($evt->{is_in_place_close}) {
- return $evt if $passthrough || $inside;
+ return $evt if $passthrough || $content;
return;
}
my $name = $evt->{name};
my $depth = 1;
- my $_next = $inside ? 'peek' : 'next';
+ my $_next = $content ? 'peek' : 'next';
+ $stream = do { local $_ = $stream; $filter->($stream) } if $filter;
my $collector = $self->_stream_from_code(sub {
return unless $stream;
while (my ($evt) = $stream->$_next) {
$depth-- if ($evt->{type} eq 'CLOSE');
unless ($depth) {
undef $stream;
- return if $inside;
+ return if $content;
push(@$into, $evt) if $into;
return $evt if $passthrough;
return;
}
push(@$into, $evt) if $into;
- $stream->next if $inside;
+ $stream->next if $content;
return $evt if $passthrough;
}
die "Never saw closing </${name}> before end of source";
});
- return ($passthrough||$inside) ? [ $evt, $collector ] : $collector;
+ return ($passthrough||$content) ? [ $evt, $collector ] : $collector;
};
}
+sub collect_content {
+ my ($self, $options) = @_;
+ $self->collect({ %{$options||{}}, content => 1 })
+}
+
sub add_before {
my ($self, $events) = @_;
sub { return $self->_stream_from_array(@$events, $_[0]) };
};
}
-sub prepend_inside {
+sub prepend_content {
my ($self, $events) = @_;
sub {
my ($evt) = @_;
};
}
-sub append_inside {
+sub append_content {
my ($self, $events) = @_;
- my $coll_proto = $self->collect({ passthrough => 1, inside => 1 });
+ my $coll_proto = $self->collect({ passthrough => 1, content => 1 });
sub {
my ($evt) = @_;
if ($evt->{is_in_place_close}) {
};
}
+sub replace_content {
+ my ($self, $replace_with, $options) = @_;
+ $self->replace($replace_with, { %{$options||{}}, content => 1 })
+}
+
sub repeat {
my ($self, $repeat_for, $options) = @_;
$options->{into} = \my @into;
- my $map_repeat = sub {
- local $_ = $self->_stream_from_array(@into);
- $_[0]->($_)
- };
+ my @between;
+ my $repeat_between = delete $options->{repeat_between};
+ if ($repeat_between) {
+ $options->{filter} = sub {
+ $_->select($repeat_between)->collect({ into => \@between })
+ };
+ }
my $repeater = sub {
- $self->_stream_from_proto($repeat_for)
- ->map($map_repeat)
- ->flatten
+ my $s = $self->_stream_from_proto($repeat_for);
+ # We have to test $repeat_between not @between here because
+ # at the point we're constructing our return stream @between
+ # hasn't been populated yet - but we can test @between in the
+ # map routine because it has been by then and that saves us doing
+ # the extra stream construction if we don't need it.
+ $self->_flatten_stream_of_streams(do {
+ if ($repeat_between) {
+ $s->map(sub {
+ local $_ = $self->_stream_from_array(@into);
+ (@between && $s->peek)
+ ? $self->_stream_concat(
+ $_[0]->($_), $self->_stream_from_array(@between)
+ )
+ : $_[0]->($_)
+ })
+ } else {
+ $s->map(sub {
+ local $_ = $self->_stream_from_array(@into);
+ $_[0]->($_)
+ })
+ }
+ })
};
$self->replace($repeater, $options);
}
+sub repeat_content {
+ my ($self, $repeat_for, $options) = @_;
+ $self->repeat($repeat_for, { %{$options||{}}, content => 1 })
+}
+
1;