* lib/pp.rb (PP.singleline_pp): new method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3110 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Dec  3 01:13:41 2002  Tanaka Akira  <akr@m17n.org>
+
+	* lib/pp.rb (PP.singleline_pp): new method.
+
 Sun Dec  1 23:04:03 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
 
 	* lib/optparse.rb (OptionParser::new): same as OptionParser#on but

lib/pp.rb

@@ -78,6 +78,12 @@ PP#pp to print the object.
 
     PP.pp returns ((|out|)).
 
+--- PP.singleline_pp(obj[, out])
+    outputs ((|obj|)) to ((|out|)) like (({PP.pp})) but with no indent and
+    newline.
+
+    PP.singleline_pp returns ((|out|)).
+
 --- PP.sharing_detection
     returns the sharing detection flag as a boolean value.
     It is false by default.
@@ -148,20 +154,19 @@ class PP < PrettyPrint
     out << "\n"
   end
 
-  @@sharing_detection = false
-  def PP.sharing_detection
-    return @@sharing_detection
+  def PP.singleline_pp(obj, out=$>)
+    pp = SingleLine.new(out)
+    pp.guard_inspect_key {pp.pp obj}
+    pp.flush
+    out
   end
 
-  def PP.sharing_detection=(val)
-    @@sharing_detection = val
-  end
-
-  def initialize(out, width=79)
-    super
-    @sharing_detection = @@sharing_detection
+  @sharing_detection = false
+  class << self
+    attr_accessor :sharing_detection
   end
 
+  module PPMethods
     InspectKey = :__inspect_key__
 
     def guard_inspect_key
@@ -191,7 +196,7 @@ class PP < PrettyPrint
         Thread.current[InspectKey] << id
         group {obj.pretty_print self}
       ensure
-      Thread.current[InspectKey].pop unless @sharing_detection
+        Thread.current[InspectKey].pop unless PP.sharing_detection
       end
     end
 
@@ -239,6 +244,13 @@ class PP < PrettyPrint
         }
       }
     end
+  end
+
+  include PPMethods
+
+  class SingleLine < PrettyPrint::SingleLine
+    include PPMethods
+  end
 
   module ObjectMixin
     # 1. specific pretty_print