X-Git-Url: http://git.vpit.fr/?a=blobdiff_plain;f=lib%2FLexical%2FTypes.pm;h=112c04236baa6956ca9fe48215b7e82f33178e1f;hb=418197898e73f85448f28aa1236f205f6a3cff5d;hp=c5bca1e792a0621ea31e10916e0c60f68476cf8d;hpb=7a753d187ec273e873d5d8a8afb9e48fed7d1955;p=perl%2Fmodules%2FLexical-Types.git

diff --git a/lib/Lexical/Types.pm b/lib/Lexical/Types.pm
index c5bca1e..112c042 100644
--- a/lib/Lexical/Types.pm
+++ b/lib/Lexical/Types.pm
@@ -13,13 +13,13 @@ Lexical::Types - Extend the semantics of typed lexicals.
 
 =head1 VERSION
 
-Version 0.03
+Version 0.07
 
 =cut
 
 our $VERSION;
 BEGIN {
- $VERSION = '0.03';
+ $VERSION = '0.07';
 }
 
 =head1 SYNOPSIS
@@ -155,7 +155,7 @@ sub import {
    croak "Invalid $r reference for 'as'";
   }
  } else {
-  $hint = _tag(0);
+  $hint = _tag(sub { @_ });
  }
 
  $^H |= 0x020000;
@@ -214,26 +214,54 @@ You can integrate L<Lexical::Types> in your module so that using it will provide
 
     sub new_int { ... }
 
-=head1 CAVEATS
+If you prefer to use constants rather than creating empty packages, you can replace the previous example with something like this :
 
-For C<perl> to be able to parse C<my Str $x>, you need :
+    package MyTypes;
 
-=over 4
+    BEGIN { require Lexical::Types; }
 
-=item *
+    sub import {
+     my $pkg = caller;
+     for (qw/Str Int/) {
+      my $type = __PACKAGE__ . '::' . $_;
+      no strict 'refs';
+      no warnings 'redefine';
+      *{$pkg.'::'.$_} = eval "sub () { '$type' }";
+     }
+     Lexical::Types->import(
+      as => sub { $_[0] => 'new' }
+     );
+    }
 
-either the C<Str> package to be defined ;
+    sub unimport {
+     Lexical::Types->unimport;
+    }
 
-=item *
+    package MyTypes::Str;
 
-or for C<Str> to be a constant sub returning a valid defined package.
+    sub new { ... }
 
-=back
+    package MyTypes::Int;
+
+    sub new { ... }
+
+=head1 CONSTANTS
+
+=head2 C<LT_THREADSAFE>
+
+True iff the module could have been built with thread-safety features enabled.
+
+=head1 CAVEATS
 
 The restrictions on the type (being either a defined package name or a constant) apply even if you use the C<'as'> option to redirect to another package, and are unlikely to find a workaround as this happens deep inside the lexer - far from the reach of an extension.
 
 Only one mangler or prefix can be in use at the same time in a given scope.
 
+The implementation was tweaked to work around several limitations of vanilla C<perl> pragmas : it's thread safe, and doesn't suffer from a C<perl 5.8.x-5.10.0> bug that causes all pragmas to propagate into C<require>d scopes.
+
+With 5.8 perls, the pragma does not propagate into C<eval STRING>.
+This is due to a shortcoming in the way perl handles the hints hash, which is addressed in perl 5.10.
+
 =head1 DEPENDENCIES
 
 L<perl> 5.8, L<XSLoader>.