Merge pull request #2 from dv/acts-as-regexp

Acts as regexp

lib/hexpress.rb

@@ -1,4 +1,7 @@
 class Hexpress
+  extend Forwardable
+  def_delegators :to_regexp, :=~, :===, :match
+
   CHARACTERS = [:word, :digit, :space]
   attr_reader :expressions
 
@@ -66,9 +69,10 @@ def line
   end
 
   # This method returns the regular hexpression form of this object.
-  def to_r
+  def to_regexp
     Regexp.new(to_s)
   end
+  alias_method :to_r, :to_regexp
 
   # This method returns the string version of the regexp.
   def to_s

spec/lib/hexpress_spec.rb

@@ -86,4 +86,32 @@
       expect(pattern4.to_r).to eq(/foobarbang/)
     end
   end
+
+  describe "#to_regexp" do
+    it "should return a Regexp object" do
+      expect(Hexpress.new.to_regexp).to be_a(Regexp)
+    end
+  end
+
+  describe "acts as a Regexp" do
+    it "should work for Regexp#try_convert" do
+      expect(Regexp.try_convert(Hexpress.new)).not_to be_nil
+    end
+
+    it "should be able to match" do
+      expect(Hexpress.new.with("foo").match("foo")).to_not be_nil
+    end
+
+    it "should match using #=~" do
+      expect(Hexpress.new.with("foo") =~ "foo").to eq(0)
+    end
+
+    it "should match using ===" do
+      expect(Hexpress.new.with("foo") === "foo").to be_true
+    end
+
+    it "should be able to be matched by strings using =~" do
+      expect("foo" =~ Hexpress.new.with("foo")).to be_true
+    end
+  end
 end