package Devel::Declare::Context::Simple;
-use Devel::Declare ();
-use Scope::Guard;
use strict;
use warnings;
+use Devel::Declare ();
+use B::Hooks::EndOfScope;
+use Carp qw/confess/;
+
+our $VERSION = '0.006016';
sub new {
- my $class = shift;
- bless {@_}, $class;
+ my $class = shift;
+ bless {@_}, $class;
}
sub init {
- my $ctx = shift;
- @{$ctx}{ qw(Declarator Offset) } = @_;
- $ctx;
+ my $self = shift;
+ @{$self}{ qw(Declarator Offset WarningOnRedefined) } = @_;
+ return $self;
+}
+
+sub offset {
+ my $self = shift;
+ return $self->{Offset}
+}
+
+sub inc_offset {
+ my $self = shift;
+ $self->{Offset} += shift;
}
-sub offset : lvalue { shift->{Offset}; }
-sub declarator { shift->{Declarator} }
+sub declarator {
+ my $self = shift;
+ return $self->{Declarator}
+}
+
+sub warning_on_redefine {
+ my $self = shift;
+ return $self->{WarningOnRedefined}
+}
sub skip_declarator {
- my $ctx = shift;
- $ctx->offset += Devel::Declare::toke_move_past_token( $ctx->offset );
+ my $self = shift;
+ 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 $ctx = shift;
- $ctx->offset += Devel::Declare::toke_skipspace( $ctx->offset );
+ my $self = shift;
+ $self->inc_offset(Devel::Declare::toke_skipspace($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 $ctx = shift;
- $ctx->skipspace;
- if( my $len = Devel::Declare::toke_scan_word( $ctx->offset, 1 ) ) {
- my $linestr = Devel::Declare::get_linestr();
- my $name = substr( $linestr, $ctx->offset, $len );
- substr( $linestr, $ctx->offset, $len ) = '';
- Devel::Declare::set_linestr($linestr);
- return $name;
- }
- return;
+ my $self = shift;
+ $self->skipspace;
+ if (my $len = Devel::Declare::toke_scan_word( $self->offset, 1 )) {
+ my $linestr = $self->get_linestr();
+ my $name = substr( $linestr, $self->offset, $len );
+ substr( $linestr, $self->offset, $len ) = '';
+ $self->set_linestr($linestr);
+ return $name;
+ }
+
+ $self->skipspace;
+ 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 $ctx = shift;
- $ctx->skipspace;
-
- my $linestr = Devel::Declare::get_linestr();
- if( substr( $linestr, $ctx->offset, 1 ) eq '(' ) {
- my $length = Devel::Declare::toke_scan_str( $ctx->offset );
- my $proto = Devel::Declare::get_lex_stuff();
- Devel::Declare::clear_lex_stuff();
- $linestr = Devel::Declare::get_linestr();
- substr( $linestr, $ctx->offset, $length ) = '';
+ my $self = shift;
+ $self->skipspace;
+
+ 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();
+ Devel::Declare::clear_lex_stuff();
+ $linestr = $self->get_linestr();
+
+ substr($linestr, $self->offset,
+ defined($length) ? $length : length($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 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);
- return $proto;
+
+ $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})";
+ }
+ }
}
- return;
+
+ $linestr = Devel::Declare::get_linestr();
+ }
+
+ return $attrs;
}
+
sub get_curstash_name {
- return Devel::Declare::get_curstash_name;
+ return Devel::Declare::get_curstash_name;
}
sub shadow {
- my $ctx = shift;
- my $pack = $ctx->get_curstash_name;
- Devel::Declare::shadow_sub( $pack . '::' . $ctx->declarator, $_[0] );
+ my $self = shift;
+ my $pack = $self->get_curstash_name;
+ Devel::Declare::shadow_sub( $pack . '::' . $self->declarator, $_[0] );
}
sub inject_if_block {
- my $ctx = shift;
- my $inject = shift;
- $ctx->skipspace;
- my $linestr = Devel::Declare::get_linestr;
- if( substr( $linestr, $ctx->offset, 1 ) eq '{' ) {
- substr( $linestr, $ctx->offset + 1, 0 ) = $inject;
- Devel::Declare::set_linestr($linestr);
- }
+ my $self = shift;
+ my $inject = shift;
+ my $before = shift || '';
+
+ $self->skipspace;
+
+ 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;
+ $self->set_linestr($linestr);
+ return 1;
+ }
+ return 0;
}
sub scope_injector_call {
- return ' BEGIN { ' . __PACKAGE__ . '::inject_scope }; ';
+ my $self = shift;
+ my $inject = shift || '';
+ return ' BEGIN { ' . ref($self) . "->inject_scope('${inject}') }; ";
}
sub inject_scope {
- my $ctx = shift;
- $^H |= 0x120000;
- $^H{DD_METHODHANDLERS} = Scope::Guard->new(
- sub {
- my $linestr = Devel::Declare::get_linestr;
- my $offset = Devel::Declare::get_linestr_offset;
- substr( $linestr, $offset, 0 ) = ';';
- Devel::Declare::set_linestr($linestr);
- }
- );
+ my $class = shift;
+ my $inject = shift;
+ on_scope_end {
+ my $linestr = Devel::Declare::get_linestr;
+ return unless defined $linestr;
+ my $offset = Devel::Declare::get_linestr_offset;
+ substr( $linestr, $offset, 0 ) = ';' . $inject;
+ Devel::Declare::set_linestr($linestr);
+ };
}
1;
-
+# vi:sw=2 ts=2
projects / p5sagit/Devel-Declare.git / blobdiff