Use 1.9 style hash syntax where possible

config/rubocop.yml

@@ -80,10 +80,6 @@ ConstantName:
 TrivialAccessors:
   Enabled: false
 
-# I like 1.8 syntax:
-HashSyntax:
-  Enabled: false
-
 # And also have a differend opinion here
 AndOr:
   Enabled: false

lib/mutant/cli.rb

@@ -58,14 +58,14 @@ module Mutant
     #
     def config
       Config.new(
-        :cache     => @cache,
-        :zombie    => @zombie,
-        :debug     => debug?,
-        :matcher   => matcher,
-        :filter    => filter,
-        :fail_fast => @fail_fast,
-        :strategy  => strategy,
-        :reporter  => reporter
+        cache:     @cache,
+        zombie:    @zombie,
+        debug:     debug?,
+        matcher:   matcher,
+        filter:    filter,
+        fail_fast: @fail_fast,
+        strategy:  strategy,
+        reporter:  reporter
       )
     end
     memoize :config

lib/mutant/cli/classifier/method.rb

@@ -50,7 +50,7 @@ module Mutant
             method.name == method_name
           end or raise NameError, "Cannot find method #{identifier}"
         end
-        memoize :method, :freezer => :noop
+        memoize :method, freezer: :noop
 
         # Return scope name
         #

lib/mutant/matcher/methods.rb

@@ -117,7 +117,7 @@ module Mutant
         def candidate_scope
           scope.singleton_class
         end
-        memoize :candidate_scope, :freezer => :noop
+        memoize :candidate_scope, freezer: :noop
 
       end # Singleton
 

lib/mutant/mutator/node/connective/binary.rb

@@ -9,8 +9,8 @@ module Mutant
         class Binary < Node
 
           INVERSE = {
-            :and => :or,
-            :or  => :and,
+            and: :or,
+            or:  :and
           }.freeze
 
           handle(*INVERSE.keys)

lib/mutant/mutator/node/literal/boolean.rb

@@ -10,8 +10,8 @@ module Mutant
         private
 
           MAP = {
-            :true  => :false,
-            :false => :true
+            true:  :false,
+            false: :true
           }.freeze
 
           handle(*MAP.keys)

lib/mutant/mutator/node/literal/range.rb

@@ -10,8 +10,8 @@ module Mutant
           include AbstractType
 
           MAP = {
-            :irange => :erange,
-            :erange => :irange
+            irange: :erange,
+            erange: :irange
           }.freeze
 
           children :start, :_end

lib/mutant/mutator/node/named_value/variable_assignment.rb

@@ -11,10 +11,10 @@ module Mutant
           children :name, :value
 
           MAP = IceNine.deep_freeze(
-            :gvasgn => '$',
-            :cvasgn => '@@',
-            :ivasgn => '@',
-            :lvasgn => ''
+            gvasgn: '$',
+            cvasgn: '@@',
+            ivasgn: '@',
+            lvasgn: ''
           )
 
           handle(*MAP.keys)

lib/mutant/mutator/node/send.rb

@@ -12,8 +12,8 @@ module Mutant
         children :receiver, :selector
 
         SELECTOR_REPLACEMENTS = {
-          :send => :public_send,
-          :gsub => :sub
+          send: :public_send,
+          gsub: :sub
         }.freeze
 
         INDEX_REFERENCE = :[]

lib/mutant/strategy/rspec.rb

@@ -33,7 +33,7 @@ module Mutant
       def configuration
         RSpec::Core::Configuration.new
       end
-      memoize :configuration, :freezer => :noop
+      memoize :configuration, freezer: :noop
 
       # Return example groups
       #
@@ -56,7 +56,7 @@ module Mutant
       def world
         RSpec.world
       end
-      memoize :world, :freezer => :noop
+      memoize :world, freezer: :noop
 
       # Return options
       #
@@ -69,7 +69,7 @@ module Mutant
         options.parse_options
         options
       end
-      memoize :options, :freezer => :noop
+      memoize :options, freezer: :noop
 
     end # Rspec
   end # Strategy