Simplify node patterns

Author: pirj

lib/rubocop/cop/rspec/around_block.rb

@@ -31,7 +31,7 @@ class AroundBlock < Base
                          'or `%<arg>s.run`.'
 
         def_node_matcher :hook, <<-PATTERN
-          (block {(send nil? :around) (send nil? :around sym)} (args $...) ...)
+          (block (send nil? :around sym ?) (args $...) ...)
         PATTERN
 
         def_node_search :find_arg_usage, <<-PATTERN

lib/rubocop/cop/rspec/implicit_block_expectation.rb

@@ -22,8 +22,7 @@ class ImplicitBlockExpectation < Base
         def_node_matcher :lambda?, <<-PATTERN
           {
             (send (const nil? :Proc) :new)
-            (send nil? :proc)
-            (send nil? :lambda)
+            (send nil? {:proc :lambda})
           }
         PATTERN
 

lib/rubocop/rspec/hook.rb

@@ -6,11 +6,7 @@ module RSpec
     class Hook < Concept
       def_node_matcher :extract_metadata, <<~PATTERN
         (block
-          {
-            (send _ _ #valid_scope? $...)
-            (send _ _ $...)
-          }
-          ...
+          (send _ _ #valid_scope? ? $...) ...
         )
       PATTERN