Use the prism ripper translator if available

lib/power_assert/parser.rb

@@ -1,9 +1,18 @@
-require 'ripper'
-
 module PowerAssert
   class Parser
     Ident = Struct.new(:type, :name, :column)
 
+    # Prism is the default parser since Ruby 3.4. It contains a compatibility layer
+    # with ripper that returns data in the same format that ripper would.
+    RipperImplementation = begin
+      gem "prism", ">= 1.0.0"
+      require "prism"
+      Prism::Translation::Ripper
+    rescue LoadError
+      require "ripper"
+      Ripper
+    end
+
     attr_reader :line, :path, :lineno, :binding
 
     def initialize(line, path, lineno, binding, assertion_method_name = nil, assertion_proc = nil)
@@ -18,7 +27,7 @@ def initialize(line, path, lineno, binding, assertion_method_name = nil, asserti
     end
 
     def idents
-      @idents ||= extract_idents(Ripper.sexp(@line_for_parsing))
+      @idents ||= extract_idents(RipperImplementation.sexp(@line_for_parsing))
     end
 
     def call_paths

test/test_helper.rb

@@ -14,7 +14,6 @@
 
 require 'test/unit'
 require 'power_assert'
-require 'ripper'
 
 module PowerAssertTestHelper
   class << self