Remove Lexer#reset method

Resolves https://github.com/YorickPeterse/oga/issues/153.

lib/oga/xml/lexer.rb

@@ -112,19 +112,8 @@ module Oga
         @data   = data
         @html   = options[:html]
         @strict = options[:strict] || false
-
-        reset
-      end
-
-      # Resets the internal state of the lexer. Typically you don't need to
-      # call this method yourself as its called by #lex after lexing a given
-      # String.
-      def reset
         @line     = 1
         @elements = []
-
-        @data.rewind if @data.respond_to?(:rewind)
-
         reset_native
       end
 
@@ -149,9 +138,6 @@ module Oga
 
       # Gathers all the tokens for the input and returns them as an Array.
       #
-      # This method resets the internal state of the lexer after consuming the
-      # input.
-      #
       # @see #advance
       # @return [Array]
       def lex
@@ -161,7 +147,7 @@ module Oga
           tokens << [type, value, line]
         end
 
-        reset
+        reset_native
 
         tokens
       end
@@ -178,8 +164,6 @@ module Oga
       # This method stores the supplied block in `@block` and resets it after
       # the lexer loop has finished.
       #
-      # This method does *not* reset the internal state of the lexer.
-      #
       # @yieldparam [Symbol] type
       # @yieldparam [String] value
       # @yieldparam [Fixnum] line

lib/oga/xml/parser.rll

@@ -245,7 +245,7 @@ string_body
   def reset
     @line = 1
 
-    @lexer.reset
+    @lexer.reset_native
   end
 
   # Yields the next token from the lexer.

spec/oga/xml/lexer/io_spec.rb

@@ -17,14 +17,6 @@ describe Oga::XML::Lexer do
       ]
     end
 
-    it 'rewinds input when resetting the lexer' do
-      io    = StringIO.new("<p class='foo'>\nHello</p>")
-      lexer = described_class.new(io)
-
-      lexer.lex.empty?.should == false
-      lexer.lex.empty?.should == false
-    end
-
     it 'lexes an attribute value starting with a newline' do
       io    = StringIO.new("<foo bar='\n10'></foo>")
       lexer = described_class.new(io)