From: Arthur Axel 'fREW' Schmidt <frioux@gmail.com>
Date: Tue, 1 Dec 2009 14:24:15 +0000 (-0600)
Subject: CSS::Declare works with arrays instead of arrayrefs
X-Git-Tag: v0.003~21^2~4
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FWeb-Simple.git;a=commitdiff_plain;h=4a610f74ec432feb55a3bb6bb1269ccbda5a3c36

CSS::Declare works with arrays instead of arrayrefs
---

diff --git a/Makefile.PL b/Makefile.PL
index 30db0fc..b8a521e 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -3,5 +3,6 @@ use warnings FATAL => 'all';
 use inc::Module::Install 0.91;
 
 all_from 'lib/Web/Simple.pm';
+requires 'Perl6::Gather';
 
 WriteAll;
diff --git a/lib/CSS/Declare.pm b/lib/CSS/Declare.pm
new file mode 100644
index 0000000..f109b8d
--- /dev/null
+++ b/lib/CSS/Declare.pm
@@ -0,0 +1,89 @@
+package CSS::Declare;
+
+use strict;
+use warnings;
+
+use Perl6::Gather;
+
+my $IN_SCOPE = 0;
+
+sub import {
+  die "Can't import CSS::Declare into a scope when already compiling one that uses it"
+    if $IN_SCOPE;
+  my ($class, @args) = @_;
+  my $opts = shift(@args) if ref($args[0]) eq 'HASH';
+  my $target = $class->_find_target(0, $opts);
+  my $unex = $class->_export_tags_into($target);
+  $class->_install_unexporter($unex);
+  $IN_SCOPE = 1;
+}
+
+sub _find_target {
+  my ($class, $extra_levels, $opts) = @_;
+  return $opts->{into} if defined($opts->{into});
+  my $level = ($opts->{into_level} || 1) + $extra_levels;
+  return (caller($level))[0];
+}
+
+my @properties = qw{
+background
+background_color
+border
+border_collapse
+border_top
+color
+float
+font_family
+font_size
+list_style_type
+margin
+padding
+};
+
+sub _export_tags_into {
+  my ($class, $into) = @_;
+   for my $property (@properties) {
+      my $property_name = $property;
+      $property_name =~ tr/_/-/;
+      no strict 'refs';
+      *{"$into\::$property"} = sub ($) { return ($property_name => $_[0]) };
+   }
+  return sub {
+    foreach my $property (@properties) {
+      no strict 'refs';
+      delete ${"${into}::"}{$property}
+    }
+    $IN_SCOPE = 0;
+  };
+}
+
+sub _install_unexporter {
+  my ($class, $unex) = @_;
+  $^H |= 0x120000; # localize %^H
+  $^H{'CSS::Declare::Unex'} = bless($unex, 'CSS::Declare::Unex');
+}
+
+sub to_css_string {
+   my @css = @_;
+   return join q{ }, gather {
+      while (my ($selector, $declarations) = splice(@css, 0, 2)) {
+         take "$selector "._generate_declarations($declarations)
+      }
+   };
+}
+
+sub _generate_declarations {
+   my $declarations = shift;
+
+   return '{'.join(q{;}, gather {
+      while (my ($property, $value) = splice(@{$declarations}, 0, 2)) {
+         take "$property:$value"
+      }
+   }).'}';
+}
+
+package CSS::Declare::Unex;
+
+sub DESTROY { local $@; eval { $_[0]->(); 1 } || warn "ARGH: $@" }
+
+1;
diff --git a/t/css_declare.t b/t/css_declare.t
index b9bcc23..1427940 100644
--- a/t/css_declare.t
+++ b/t/css_declare.t
@@ -7,11 +7,10 @@ use Test::More qw(no_plan);
 
   sub foo {
     use CSS::Declare;
-    eval "color 'red'";
-    [
+    return (
        '*' => [ color 'red' ],
        'tr, td' => [ margin '1px' ],
-    ];
+    );
   }
 }