package Devel::Declare::Context::Simple;
-use Devel::Declare ();
-use B::Hooks::EndOfScope;
use strict;
use warnings;
+use Devel::Declare ();
+use B::Hooks::EndOfScope;
+use Carp qw/confess/;
-sub DEBUG { warn "@_" }
sub new {
my $class = shift;
bless {@_}, $class;
sub init {
my $self = shift;
@{$self}{ qw(Declarator Offset) } = @_;
- $self;
+ return $self;
}
-sub offset : lvalue { shift->{Offset}; }
-sub declarator { shift->{Declarator} }
+sub offset {
+ my $self = shift;
+ return $self->{Offset}
+}
+
+sub inc_offset {
+ my $self = shift;
+ $self->{Offset} += shift;
+}
+
+sub declarator {
+ my $self = shift;
+ return $self->{Declarator}
+}
sub skip_declarator {
my $self = shift;
- $self->offset += Devel::Declare::toke_move_past_token( $self->offset );
+ my $decl = $self->declarator;
+ my $len = Devel::Declare::toke_scan_word($self->offset, 0);
+ confess "Couldn't find declarator '$decl'"
+ unless $len;
+
+ my $linestr = $self->get_linestr;
+ my $name = substr($linestr, $self->offset, $len);
+ confess "Expected declarator '$decl', got '${name}'"
+ unless $name eq $decl;
+
+ $self->inc_offset($len);
}
sub skipspace {
my $self = shift;
- $self->offset += Devel::Declare::toke_skipspace( $self->offset );
+ $self->inc_offset(Devel::Declare::toke_skipspace($self->offset));
+}
+
+sub get_linestr {
+ my $self = shift;
+ my $line = Devel::Declare::get_linestr();
+ return $line;
+}
+
+sub set_linestr {
+ my $self = shift;
+ my ($line) = @_;
+ Devel::Declare::set_linestr($line);
}
sub strip_name {
my $self = shift;
$self->skipspace;
if (my $len = Devel::Declare::toke_scan_word( $self->offset, 1 )) {
- my $linestr = Devel::Declare::get_linestr();
+ my $linestr = $self->get_linestr();
my $name = substr( $linestr, $self->offset, $len );
substr( $linestr, $self->offset, $len ) = '';
- Devel::Declare::set_linestr($linestr);
+ $self->set_linestr($linestr);
return $name;
}
return;
}
+sub strip_ident {
+ my $self = shift;
+ $self->skipspace;
+ if (my $len = Devel::Declare::toke_scan_ident( $self->offset )) {
+ my $linestr = $self->get_linestr();
+ my $ident = substr( $linestr, $self->offset, $len );
+ substr( $linestr, $self->offset, $len ) = '';
+ $self->set_linestr($linestr);
+ return $ident;
+ }
+
+ $self->skipspace;
+ return;
+}
+
sub strip_proto {
my $self = shift;
$self->skipspace;
- my $linestr = Devel::Declare::get_linestr();
+ my $linestr = $self->get_linestr();
if (substr($linestr, $self->offset, 1) eq '(') {
my $length = Devel::Declare::toke_scan_str($self->offset);
- my $proto = Devel::Declare::get_lex_stuff();
+ my $proto = Devel::Declare::get_lex_stuff();
Devel::Declare::clear_lex_stuff();
- $linestr = Devel::Declare::get_linestr();
+ $linestr = $self->get_linestr();
+
substr($linestr, $self->offset, $length) = '';
- Devel::Declare::set_linestr($linestr);
+ $self->set_linestr($linestr);
+
return $proto;
}
-
return;
}
+sub strip_names_and_args {
+ my $self = shift;
+ $self->skipspace;
+
+ my @args;
+
+ my $linestr = $self->get_linestr;
+ if (substr($linestr, $self->offset, 1) eq '(') {
+ # We had a leading paren, so we will now expect comma separated
+ # arguments
+ substr($linestr, $self->offset, 1) = '';
+ $self->set_linestr($linestr);
+ $self->skipspace;
+
+ # At this point we expect to have a comma-separated list of
+ # barewords with optional protos afterward, so loop until we
+ # run out of comma-separated values
+ while (1) {
+ # Get the bareword
+ my $thing = $self->strip_name;
+ # If there's no bareword here, bail
+ confess "failed to parse bareword. found ${linestr}"
+ unless defined $thing;
+
+ $linestr = $self->get_linestr;
+ if (substr($linestr, $self->offset, 1) eq '(') {
+ # This one had a proto, pull it out
+ push(@args, [ $thing, $self->strip_proto ]);
+ } else {
+ # This had no proto, so store it with an undef
+ push(@args, [ $thing, undef ]);
+ }
+ $self->skipspace;
+ $linestr = $self->get_linestr;
+
+ if (substr($linestr, $self->offset, 1) eq ',') {
+ # We found a comma, strip it out and set things up for
+ # another iteration
+ substr($linestr, $self->offset, 1) = '';
+ $self->set_linestr($linestr);
+ $self->skipspace;
+ } else {
+ # No comma, get outta here
+ last;
+ }
+ }
+
+ # look for the final closing paren of the list
+ if (substr($linestr, $self->offset, 1) eq ')') {
+ substr($linestr, $self->offset, 1) = '';
+ $self->set_linestr($linestr);
+ $self->skipspace;
+ }
+ else {
+ # fail if it isn't there
+ confess "couldn't find closing paren for argument. found ${linestr}"
+ }
+ } else {
+ # No parens, so expect a single arg
+ my $thing = $self->strip_name;
+ # If there's no bareword here, bail
+ confess "failed to parse bareword. found ${linestr}"
+ unless defined $thing;
+ $linestr = $self->get_linestr;
+ if (substr($linestr, $self->offset, 1) eq '(') {
+ # This one had a proto, pull it out
+ push(@args, [ $thing, $self->strip_proto ]);
+ } else {
+ # This had no proto, so store it with an undef
+ push(@args, [ $thing, undef ]);
+ }
+ }
+
+ return \@args;
+}
+
sub get_curstash_name {
return Devel::Declare::get_curstash_name;
}
sub shadow {
- my $self = shift;
+ my $self = shift;
my $pack = $self->get_curstash_name;
Devel::Declare::shadow_sub( $pack . '::' . $self->declarator, $_[0] );
}
$self->skipspace;
- my $linestr = Devel::Declare::get_linestr;
+ my $linestr = $self->get_linestr;
if (substr($linestr, $self->offset, 1) eq '{') {
substr($linestr, $self->offset + 1, 0) = $inject;
substr($linestr, $self->offset, 0) = $before;
- Devel::Declare::set_linestr($linestr);
+ $self->set_linestr($linestr);
+ return 1;
}
+ return 0;
}
sub scope_injector_call {