Fix parsing of multiple methods on the same line

When a two class methods existed on the same line the second method
would be omitted and the remainder of the file may experience other
parsing mistakes.

This occurred when the second method required altering the lex state in
a way read_directive didn't reproduce.  This would cause incorrect
parsing of tokens as when tokens are ungotten the tokens are not
re-lexed.

Now when read_directive encounters a "def" token it assumes no
directives are present (as only one directive is allowed per line).

Fixes ruby#221

History.rdoc

@@ -43,6 +43,7 @@
   * Fixed text that is missing whitespace for TomDoc.  Bug #248 by Noel Cower.
   * The RDoc methods now store the method they are aliased to.  Bug #206 by
     Jeremy Stephens.
+  * Fixed parsing of multiple methods on the same line.  Bug #221 by derula.
 
 === 4.0.1 / 2013-03-27
 

lib/rdoc/parser/ruby.rb

@@ -1796,7 +1796,8 @@ def read_directive allowed
       tokens << tk
 
       case tk
-      when TkNL      then return
+      when TkNL, TkDEF then
+        return
       when TkCOMMENT then
         return unless tk.text =~ /\s*:?([\w-]+):\s*(.*)/
 

test/test_rdoc_parser_ruby.rb

@@ -2980,6 +2980,32 @@ def z
     assert_equal 2, @top_level.classes.first.method_list.length
   end
 
+  def test_scan_method_semi_method
+    content = <<-CONTENT
+class A
+  def self.m() end; def self.m=() end
+end
+
+class B
+  def self.m() end
+end
+    CONTENT
+
+    util_parser content
+
+    @parser.scan
+
+    a = @store.find_class_named 'A'
+    assert a, 'missing A'
+
+    assert_equal 2, a.method_list.length
+
+    b = @store.find_class_named 'B'
+    assert b, 'missing B'
+
+    assert_equal 1, b.method_list.length
+  end
+
   def test_scan_markup_override
     content = <<-CONTENT
 # *awesome*