From 10632eafd42479d162b31c225859f2e4927cf0ca Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Mon, 3 Nov 2014 23:00:15 +0100
Subject: [PATCH] Parsing support for the :first-of-type pseudo.

---
 lib/oga/css/parser.y                                  |  7 +++++++
 .../css/parser/pseudo_classes/first_of_type_spec.rb   | 11 +++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 spec/oga/css/parser/pseudo_classes/first_of_type_spec.rb

diff --git a/lib/oga/css/parser.y b/lib/oga/css/parser.y
index 8f6dbd9..4aaef24 100644
--- a/lib/oga/css/parser.y
+++ b/lib/oga/css/parser.y
@@ -514,6 +514,13 @@ end
     )
   end
 
+  ##
+  # @return [AST::Node]
+  #
+  def on_pseudo_class_first_of_type
+    return s(:eq, s(:call, 'position'), s(:int, 1))
+  end
+
   private
 
   ##
diff --git a/spec/oga/css/parser/pseudo_classes/first_of_type_spec.rb b/spec/oga/css/parser/pseudo_classes/first_of_type_spec.rb
new file mode 100644
index 0000000..4356bb7
--- /dev/null
+++ b/spec/oga/css/parser/pseudo_classes/first_of_type_spec.rb
@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+describe Oga::CSS::Parser do
+  context ':first-of-type pseudo class' do
+    example 'parse the :first-of-type pseudo class' do
+      parse_css(':first-of-type').should == parse_xpath(
+        'descendant-or-self::*[position() = 1]'
+      )
+    end
+  end
+end