From a59a8c0fc75f6c0339facdd90302eb352e9d8ea6 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Sat, 26 Sep 2009 23:40:46 -0700
Subject: supporting scalar tags

---
 ext/psych/parser.c          |  7 ++++++-
 lib/psych/parser/handler.rb |  2 +-
 test/psych/test_parser.rb   | 11 +++++++++--
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/ext/psych/parser.c b/ext/psych/parser.c
index 698eb37..6fd6cb4 100644
--- a/ext/psych/parser.c
+++ b/ext/psych/parser.c
@@ -78,7 +78,12 @@ static VALUE parse_string(VALUE self, VALUE string)
               (const char *)event.data.scalar.value,
               (long)event.data.scalar.length
           );
-          rb_funcall(handler, rb_intern("scalar"), 1, val);
+
+          VALUE tag = event.data.scalar.tag ?
+            rb_str_new2((const char *)event.data.scalar.tag) :
+            Qnil;
+
+          rb_funcall(handler, rb_intern("scalar"), 2, tag, val);
         }
         break;
       case YAML_STREAM_END_EVENT:
diff --git a/lib/psych/parser/handler.rb b/lib/psych/parser/handler.rb
index 599dfe2..a36e8fa 100644
--- a/lib/psych/parser/handler.rb
+++ b/lib/psych/parser/handler.rb
@@ -26,7 +26,7 @@ module Psych
 
       ###
       # Called when a scalar +value+ is found
-      def scalar value
+      def scalar tag, value
       end
 
       ###
diff --git a/test/psych/test_parser.rb b/test/psych/test_parser.rb
index 7d6335b..90c19b2 100644
--- a/test/psych/test_parser.rb
+++ b/test/psych/test_parser.rb
@@ -28,6 +28,11 @@ module Psych
       assert_called :scalar, ['foo']
     end
 
+    def test_scalar_with_tag
+      @parser.parse("---\n!!str foo\n")
+      assert_called :scalar, ['tag:yaml.org,2002:str', 'foo']
+    end
+
     def test_alias
       @parser.parse(<<-eoyml)
 %YAML 1.1
@@ -75,8 +80,10 @@ module Psych
 
     def assert_called call, with = nil, parser = @parser
       if with
-        assert(
-          parser.handler.calls.any? { |x| x.compact == [call, with] },
+        call = parser.handler.calls.find { |x|
+          x.first == call && x.last.compact == with
+        }
+        assert(call,
           "#{[call,with].inspect} not in #{parser.handler.calls.inspect}"
         )
       else
-- 
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