package Devel::Declare::MethodInstaller::Simple;
use base 'Devel::Declare::Context::Simple';
use Devel::Declare ();
use Sub::Name;
use strict;
use warnings;
our $VERSION = '0.003005';
sub install_methodhandler {
my $class = shift;
my %args = @_;
{
no strict 'refs';
*{$args{into}.'::'.$args{name}} = sub (&) {};
}
my $ctx = $class->new(%args);
Devel::Declare->setup_for(
$args{into},
{ $args{name} => { const => sub { $ctx->parser(@_) } } }
);
}
sub strip_attrs {
my $self = shift;
$self->skipspace;
my $linestr = Devel::Declare::get_linestr;
my $attrs = '';
if (substr($linestr, $self->offset, 1) eq ':') {
while (substr($linestr, $self->offset, 1) ne '{') {
if (substr($linestr, $self->offset, 1) eq ':') {
substr($linestr, $self->offset, 1) = '';
Devel::Declare::set_linestr($linestr);
$attrs .= ':';
}
$self->skipspace;
$linestr = Devel::Declare::get_linestr();
if (my $len = Devel::Declare::toke_scan_word($self->offset, 0)) {
my $name = substr($linestr, $self->offset, $len);
substr($linestr, $self->offset, $len) = '';
Devel::Declare::set_linestr($linestr);
$attrs .= " ${name}";
if (substr($linestr, $self->offset, 1) eq '(') {
my $length = Devel::Declare::toke_scan_str($self->offset);
my $arg = Devel::Declare::get_lex_stuff();
Devel::Declare::clear_lex_stuff();
$linestr = Devel::Declare::get_linestr();
substr($linestr, $self->offset, $length) = '';
Devel::Declare::set_linestr($linestr);
$attrs .= "(${arg})";
}
}
}
$linestr = Devel::Declare::get_linestr();
}
return $attrs;
}
sub code_for {
my ($self, $name) = @_;
if (defined $name) {
my $pkg = $self->get_curstash_name;
$name = join( '::', $pkg, $name )
unless( $name =~ /::/ );
return sub (&) {
my $code = shift;
# So caller() gets the subroutine name
no strict 'refs';
*{$name} = subname $name => $code;
return;
};
} else {
return sub (&) { shift };
}
}
sub install {
my ($self, $name ) = @_;
$self->shadow( $self->code_for($name) );
}
sub parser {
my $self = shift;
$self->init(@_);
$self->skip_declarator;
my $name = $self->strip_name;
my $proto = $self->strip_proto;
my $attrs = $self->strip_attrs;
my @decl = $self->parse_proto($proto);
my $inject = $self->inject_parsed_proto(@decl);
if (defined $name) {
$inject = $self->scope_injector_call() . $inject;
}
$self->inject_if_block($inject, $attrs ? "sub ${attrs} " : '');
$self->install( $name );
return;
}
sub parse_proto { '' }
sub inject_parsed_proto {
return $_[1];
}
1;