Hide the options data structure better

Library/Homebrew/build_options.rb

@@ -30,10 +30,6 @@ class BuildOptions
     @options << Option.new(name, description)
   end
 
-  def has_option? name
-    any? { |opt| opt.name == name }
-  end
-
   def empty?
     @options.empty?
   end
@@ -57,9 +53,9 @@ class BuildOptions
       name = val
     end
 
-    if has_option? "with-#{name}"
+    if option_defined? "with-#{name}"
       include? "with-#{name}"
-    elsif has_option? "without-#{name}"
+    elsif option_defined? "without-#{name}"
       not include? "without-#{name}"
     else
       false
@@ -88,19 +84,19 @@ class BuildOptions
 
   # True if the user requested a universal build.
   def universal?
-    universal || include?("universal") && has_option?("universal")
+    universal || include?("universal") && option_defined?("universal")
   end
 
   # True if the user requested to enable C++11 mode.
   def cxx11?
-    include?("c++11") && has_option?("c++11")
+    include?("c++11") && option_defined?("c++11")
   end
 
   # Request a 32-bit only build.
   # This is needed for some use-cases though we prefer to build Universal
   # when a 32-bit version is needed.
   def build_32_bit?
-    include?("32-bit") && has_option?("32-bit")
+    include?("32-bit") && option_defined?("32-bit")
   end
 
   def used_options
@@ -110,4 +106,10 @@ class BuildOptions
   def unused_options
     Options.new(@options - @args)
   end
+
+  private
+
+  def option_defined? name
+    @options.include? name
+  end
 end

Library/Homebrew/cmd/audit.rb

@@ -136,7 +136,7 @@ class FormulaAuditor
       end
 
       dep.options.reject do |opt|
-        next true if dep_f.build.has_option?(opt.name)
+        next true if dep_f.option_defined?(opt)
         dep_f.requirements.detect do |r|
           if r.recommended?
             opt.name == "with-#{r.name}"

Library/Homebrew/formula.rb

@@ -106,6 +106,10 @@ class Formula
     active_spec.patches
   end
 
+  def option_defined?(name)
+    active_spec.option_defined?(name)
+  end
+
   # if the dir is there, but it's empty we consider it not installed
   def installed?
     (dir = installed_prefix).directory? && dir.children.length > 0

Library/Homebrew/formula_installer.rb

@@ -316,8 +316,9 @@ class FormulaInstaller
 
   def inherited_options_for(dep)
     inherited_options = Options.new
-    if (options.include?("universal") || f.build.universal?) && !dep.build? && dep.to_formula.build.has_option?("universal")
+    u = Option.new("universal")
-      inherited_options << Option.new("universal")
+    if (options.include?(u) || f.build.universal?) && !dep.build? && dep.to_formula.option_defined?(u)
+      inherited_options << u
     end
     inherited_options
   end

Library/Homebrew/software_spec.rb

@@ -71,6 +71,10 @@ class SoftwareSpec
     end
   end
 
+  def option_defined?(name)
+    options.include?(name)
+  end
+
   def option name, description=nil
     name = 'c++11' if name == :cxx11
     name = name.to_s if Symbol === name
@@ -105,9 +109,9 @@ class SoftwareSpec
   def add_dep_option(dep)
     name = dep.option_name
 
-    if dep.optional? && !options.include?("with-#{name}")
+    if dep.optional? && !option_defined?("with-#{name}")
       options << Option.new("with-#{name}", "Build with #{name} support")
-    elsif dep.recommended? && !options.include?("without-#{name}")
+    elsif dep.recommended? && !option_defined?("without-#{name}")
       options << Option.new("without-#{name}", "Build without #{name} support")
     end
   end

Library/Homebrew/test/test_build_options.rb

@@ -15,11 +15,6 @@ class BuildOptionsTests < Homebrew::TestCase
       @build.as_flags.sort
   end
 
-  def test_has_option?
-    assert @build.has_option?("with-foo")
-    assert !@build.has_option?("with-qux")
-  end
-
   def test_include
     assert_includes @build, "with-foo"
     refute_includes @build, "with-qux"

Library/Homebrew/test/test_software_spec.rb

@@ -44,7 +44,7 @@ class SoftwareSpecTests < Homebrew::TestCase
 
   def test_option
     @spec.option('foo')
-    assert @spec.build.has_option? 'foo'
+    assert @spec.option_defined?("foo")
   end
 
   def test_option_raises_when_begins_with_dashes
@@ -57,7 +57,7 @@ class SoftwareSpecTests < Homebrew::TestCase
 
   def test_option_accepts_symbols
     @spec.option(:foo)
-    assert @spec.build.has_option? 'foo'
+    assert @spec.option_defined?("foo")
   end
 
   def test_depends_on
@@ -68,8 +68,8 @@ class SoftwareSpecTests < Homebrew::TestCase
   def test_dependency_option_integration
     @spec.depends_on 'foo' => :optional
     @spec.depends_on 'bar' => :recommended
-    assert @spec.build.has_option?('with-foo')
+    assert @spec.option_defined?("with-foo")
-    assert @spec.build.has_option?('without-bar')
+    assert @spec.option_defined?("without-bar")
   end
 
   def test_explicit_options_override_default_dep_option_description