support scalar cmd_aliases, so that singular aliases are not so clunky to type

[gitmo/MooseX-Getopt.git] / lib / MooseX / Getopt / Meta / Attribute.pm

diff --git a/lib/MooseX/Getopt/Meta/Attribute.pm b/lib/MooseX/Getopt/Meta/Attribute.pm
index 634bbbb..55d1750 100644 (file)
--- a/lib/MooseX/Getopt/Meta/Attribute.pm
+++ b/lib/MooseX/Getopt/Meta/Attribute.pm
@@ -1,6 +1,7 @@
 
 package MooseX::Getopt::Meta::Attribute;
 use Moose;
+use Moose::Util::TypeConstraints;
 
 our $VERSION   = '0.01';
 our $AUTHORITY = 'cpan:STEVAN';
@@ -13,10 +14,20 @@ has 'cmd_flag' => (
     predicate => 'has_cmd_flag',
 );
 
+# This subtype is to support scalar -> arrayref coercion
+#  without polluting the built-in types
+subtype '_MooseX_Getopt_CmdAliases'
+    => as 'ArrayRef'
+        => where { 1 };
+coerce '_MooseX_Getopt_CmdAliases'
+    => from 'Value'
+        => via { [$_] };
+
 has 'cmd_aliases' => (
     is        => 'rw',
-    isa       => 'ArrayRef',
+    isa       => '_MooseX_Getopt_CmdAliases',
     predicate => 'has_cmd_aliases',
+    coerce    => 1,
 );
 
 no Moose; 1;
@@ -42,14 +53,19 @@ MooseX::Getopt::Meta::Attribute - Optional meta attribute for custom option name
       is        => 'ro',
       isa       => 'Str',
       default   => 'file.dat',
+
       # tells MooseX::Getopt to use --somedata as the 
       # command line flag instead of the normal 
       # autogenerated one (--data)
       cmd_flag  => 'somedata',
+
       # tells MooseX::Getopt to also allow --moosedata,
       # -m, and -d as aliases for this same option on
       # the commandline.
       cmd_aliases => [qw/ moosedata m d /],
+
+      # Or, you can use a plain scalar for a single alias:
+      cmd_aliases => 'm',
   );
 
 =head1 DESCRIPTION