1 files changed, 101 insertions, 0 deletions
diff --git a/trunk/lib/rdoc/markup/inline.rb b/trunk/lib/rdoc/markup/inline.rb
new file mode 100644
index 0000000000..ee77679a11
--- /dev/null
+++ b/trunk/lib/rdoc/markup/inline.rb
@@ -0,0 +1,101 @@
+require 'rdoc/markup'
+
+class RDoc::Markup
+
+  ##
+  # We manage a set of attributes. Each attribute has a symbol name and a bit
+  # value.
+
+  class Attribute
+    SPECIAL = 1
+
+    @@name_to_bitmap = { :_SPECIAL_ => SPECIAL }
+    @@next_bitmap = 2
+
+    def self.bitmap_for(name)
+      bitmap = @@name_to_bitmap[name]
+      unless bitmap then
+        bitmap = @@next_bitmap
+        @@next_bitmap <<= 1
+        @@name_to_bitmap[name] = bitmap
+      end
+      bitmap
+    end
+
+    def self.as_string(bitmap)
+      return "none" if bitmap.zero?
+      res = []
+      @@name_to_bitmap.each do |name, bit|
+        res << name if (bitmap & bit) != 0
+      end
+      res.join(",")
+    end
+
+    def self.each_name_of(bitmap)
+      @@name_to_bitmap.each do |name, bit|
+        next if bit == SPECIAL
+        yield name.to_s if (bitmap & bit) != 0
+      end
+    end
+  end
+
+  AttrChanger = Struct.new(:turn_on, :turn_off)
+
+  ##
+  # An AttrChanger records a change in attributes. It contains a bitmap of the
+  # attributes to turn on, and a bitmap of those to turn off.
+
+  class AttrChanger
+    def to_s
+      "Attr: +#{Attribute.as_string(@turn_on)}/-#{Attribute.as_string(@turn_on)}"
+    end
+  end
+
+  ##
+  # An array of attributes which parallels the characters in a string.
+
+  class AttrSpan
+    def initialize(length)
+      @attrs = Array.new(length, 0)
+    end
+
+    def set_attrs(start, length, bits)
+      for i in start ... (start+length)
+        @attrs[i] |= bits
+      end
+    end
+
+    def [](n)
+      @attrs[n]
+    end
+  end
+
+  ##
+  # Hold details of a special sequence
+
+  class Special
+    attr_reader   :type
+    attr_accessor :text
+
+    def initialize(type, text)
+      @type, @text = type, text
+    end
+
+    def ==(o)
+      self.text == o.text && self.type == o.type
+    end
+
+    def inspect
+      "#<RDoc::Markup::Special:0x%x @type=%p, name=%p @text=%p>" % [
+        object_id, @type, RDoc::Markup::Attribute.as_string(type), text.dump]
+    end
+
+    def to_s
+      "Special: type=#{type}, name=#{RDoc::Markup::Attribute.as_string type}, text=#{text.dump}"
+    end
+
+  end
+
+end
+
+require 'rdoc/markup/attribute_manager'