From f47e43aa2ba6ff772b13db62ea2c321ea513516f Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Mon, 6 May 2013 16:08:49 -0500
Subject: [PATCH] Extract string and class logic from parse_spec

---
 Library/Homebrew/dependency_collector.rb | 28 +++++++++++++++---------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/Library/Homebrew/dependency_collector.rb b/Library/Homebrew/dependency_collector.rb
index e53b8da0a4..69e5978c3c 100644
--- a/Library/Homebrew/dependency_collector.rb
+++ b/Library/Homebrew/dependency_collector.rb
@@ -51,26 +51,26 @@ class DependencyCollector
   def parse_spec spec, tag
     case spec
     when String
-      if tag && LANGUAGE_MODULES.include?(tag)
-        LanguageModuleDependency.new(tag, spec)
-      else
-        Dependency.new(spec, tag)
-      end
+      parse_string_spec(spec, tag)
     when Symbol
       parse_symbol_spec(spec, tag)
     when Dependency, Requirement
       spec
     when Class
-      if spec < Requirement
-        spec.new(tag)
-      else
-        raise "#{spec} is not a Requirement subclass"
-      end
+      parse_class_spec(spec, tag)
     else
       raise "Unsupported type #{spec.class} for #{spec}"
     end
   end
 
+  def parse_string_spec(spec, tag)
+    if tag && LANGUAGE_MODULES.include?(tag)
+      LanguageModuleDependency.new(tag, spec)
+    else
+      Dependency.new(spec, tag)
+    end
+  end
+
   def parse_symbol_spec spec, tag
     case spec
     when :autoconf, :automake, :bsdmake, :libtool, :libltdl
@@ -95,6 +95,14 @@ class DependencyCollector
     end
   end
 
+  def parse_class_spec(spec, tag)
+    if spec < Requirement
+      spec.new(tag)
+    else
+      raise "#{spec} is not a Requirement subclass"
+    end
+  end
+
   def x11_dep(spec, tag)
     if MacOS.version >= :mountain_lion
       Dependency.new(spec.to_s, tag)