X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSelfLoader.pm;h=40c92db6b7a3b41c15bc17f6dff61aa5d2162d4c;hb=8af3c3489f0c9ca8d37ebae27991ac4f34dfdb2f;hp=c4e9175a79fa6d836fae43f6b17c72005f0df371;hpb=e3d0cac0c3bf9ec77cb3e2fc362639f009d309e4;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/SelfLoader.pm b/lib/SelfLoader.pm
index c4e9175..40c92db 100644
--- a/lib/SelfLoader.pm
+++ b/lib/SelfLoader.pm
@@ -3,17 +3,26 @@ package SelfLoader;
 require Exporter;
 @ISA = qw(Exporter);
 @EXPORT = qw(AUTOLOAD);
-$VERSION = "1.08";
+$VERSION = "1.0904";
 sub Version {$VERSION}
 $DEBUG = 0;
 
 my %Cache;      # private cache for all SelfLoader's client packages
 
+# allow checking for valid ': attrlist' attachments
+# (we use 'our' rather than 'my' here, due to the rather complex and buggy
+# behaviour of lexicals with qr// and (??{$lex}) )
+our $nested;
+$nested = qr{ \( (?: (?> [^()]+ ) | (??{ $nested }) )* \) }x;
+our $one_attr = qr{ (?> (?! \d) \w+ (?:$nested)? ) (?:\s*\:\s*|\s+(?!\:)) }x;
+our $attr_list = qr{ \s* : \s* (?: $one_attr )* }x;
+
 sub croak { require Carp; goto &Carp::croak }
 
 AUTOLOAD {
     print STDERR "SelfLoader::AUTOLOAD for $AUTOLOAD\n" if $DEBUG;
     my $SL_code = $Cache{$AUTOLOAD};
+    my $save = $@; # evals in both AUTOLOAD and _load_stubs can corrupt $@
     unless ($SL_code) {
         # Maybe this pack had stubs before __DATA__, and never initialized.
         # Or, this maybe an automatic DESTROY method call when none exists.
@@ -25,11 +34,13 @@ AUTOLOAD {
         croak "Undefined subroutine $AUTOLOAD" unless $SL_code;
     }
     print STDERR "SelfLoader::AUTOLOAD eval: $SL_code\n" if $DEBUG;
+
     eval $SL_code;
     if ($@) {
         $@ =~ s/ at .*\n//;
         croak $@;
     }
+    $@ = $save;
     defined(&$AUTOLOAD) || die "SelfLoader inconsistency error";
     delete $Cache{$AUTOLOAD};
     goto &$AUTOLOAD
@@ -38,7 +49,8 @@ AUTOLOAD {
 sub load_stubs { shift->_load_stubs((caller)[0]) }
 
 sub _load_stubs {
-    my($self, $callpack) = @_;
+    # $endlines is used by Devel::SelfStubber to capture lines after __END__
+    my($self, $callpack, $endlines) = @_;
     my $fh = \*{"${callpack}::DATA"};
     my $currpack = $callpack;
     my($line,$name,@lines, @stubs, $protoype);
@@ -50,7 +62,7 @@ sub _load_stubs {
 
     local($/) = "\n";
     while(defined($line = <$fh>) and $line !~ m/^__END__/) {
-        if ($line =~ m/^sub\s+([\w:]+)\s*(\([\\\$\@\%\&\*\;]*\))?/) {
+	if ($line =~ m/^sub\s+([\w:]+)\s*((?:\([\\\$\@\%\&\*\;]*\))?(?:$attr_list)?)/) {
             push(@stubs, $self->_add_to_cache($name, $currpack, \@lines, $protoype));
             $protoype = $2;
             @lines = ($line);
@@ -85,7 +97,16 @@ sub _load_stubs {
             push(@lines,$line);
         }
     }
-    close($fh) unless defined($line) && $line =~ /^__END__\s*DATA/;     # __END__
+    if (defined($line) && $line =~ /^__END__/) { # __END__
+        unless ($line =~ /^__END__\s*DATA/) {
+            if ($endlines) {
+                # Devel::SelfStubber would like us to capture the lines after
+                # __END__ so it can write out the entire file
+                @$endlines = <$fh>;
+            }
+            close($fh);
+        }
+    }
     push(@stubs, $self->_add_to_cache($name, $currpack, \@lines, $protoype));
     eval join('', @stubs) if @stubs;
 }
@@ -115,9 +136,9 @@ SelfLoader - load functions only on demand
 
     package FOOBAR;
     use SelfLoader;
-    
+
     ... (initializing code)
-    
+
     __DATA__
     sub {....