* lib/yaml.rb: reworking YAML::Stream to use the new

  emitter.

* lib/yaml/stream.rb: ditto.

* lib/yaml/rubytypes.rb: added Object#yaml_new.

* lib/yaml/tag.rb: the tag_subclasses? method now
  shows up in the class.  allow taguri to be set using an accessor.
  continue support of Object#to_yaml_type.

* ext/syck/rubyext.c: new emitter code.  yaml_new and yaml_initialize
  get called, should they be present.  consolidated all the diaspora of internal
  node types into the family below YAML::Syck::Node -- Map,
  Seq, Scalar -- all of whom are SyckNode structs pointing to
  Ruby data.  moved Object#yaml_new into the node_import and made it the
  default behavior.  the target_class is always called wih yaml_new, prepended
  a parameter, which is the klass.  loaded nodes through GenericResolver show their style.
  new Resolver#tagurize converts type ids to taguris.

* ext/syck/implicit.re: were 'y' and 'n' seriously omitted??

* ext/syck/emitter.c: renovated emitter, walks the tree in advance.
  consolidated redundant block_styles struct into
  the scalar_style struct.  (this means loaded nodes can now
  be sent back to emitter and preserve at least its very basic
  formatting.)

* ext/syck/gram.c: headless documents of any kind allowed.

* ext/syck/node.c: new syck_replace_str methods and syck_empty_*
  methods for rewriting node contents, while keeping the ID
  and other setup info.  added syck_seq_assign.

* ext/syck/syck.h: reflect block_styles and new node functions.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 11 deletions

diff --git a/lib/yaml/stream.rb b/lib/yaml/stream.rb
index 943c51526b..060fbc4200 100644
--- a/lib/yaml/stream.rb
+++ b/lib/yaml/stream.rb
@@ -24,19 +24,15 @@ module YAML
 			@documents[ doc_num ] = doc
 		end
 
-		def emit
-            opts = @options.dup
-			opts[:UseHeader] = true if @documents.length > 1
-			ct = 0
-            out = YAML::Syck::Emitter.new( opts )
+		def emit( io = nil )
+            # opts = @options.dup
+			# opts[:UseHeader] = true if @documents.length > 1
+            out = YAML.emitter
+            out.reset( io || io2 = StringIO.new )
             @documents.each { |v|
-                if ct > 0
-                    out << "\n--- " 
-                end
-                v.to_yaml( :Emitter => out )
-                ct += 1
+                v.to_yaml( out )
             }
-            out.end_object
+            io || ( io2.rewind; io2.read )
 		end
 
 	end