Handle numbered parameters in ripper translation

Author: kddnewton

lib/prism/translation/ripper.rb

@@ -1791,10 +1791,7 @@ def visit_keyword_rest_parameter_node(node)
       # -> {}
       def visit_lambda_node(node)
         parameters =
-          if node.parameters.nil?
-            bounds(node.location)
-            on_params(nil, nil, nil, nil, nil, nil, nil)
-          else
+          if node.parameters.is_a?(BlockParametersNode)
             # Ripper does not track block-locals within lambdas, so we skip
             # directly to the parameters here.
             params = visit(node.parameters.parameters)
@@ -1805,6 +1802,9 @@ def visit_lambda_node(node)
               bounds(node.parameters.opening_loc)
               on_paren(params)
             end
+          else
+            bounds(node.location)
+            on_params(nil, nil, nil, nil, nil, nil, nil)
           end
 
         braces = node.opening == "{"

test/prism/ripper_test.rb

@@ -11,17 +11,14 @@ class RipperTest < TestCase
     relatives = ENV["FOCUS"] ? [ENV["FOCUS"]] : Dir["**/*.txt", base: base]
 
     incorrect = [
-      # Ripper incorrectly attributes the block to the `break` statement.
+      # Ripper incorrectly attributes the block to the keyword.
+      "seattlerb/block_break.txt",
       "whitequark/break_block.txt",
-
-      # Ripper cannot handle named capture groups in regular expressions.
-      "whitequark/lvar_injecting_match.txt",
-
-      # Ripper incorrectly attributes the block to the `next` statement.
       "whitequark/next_block.txt",
+      "whitequark/return_block.txt",
 
-      # Ripper incorrectly attributes the block to the `return` statement.
-      "whitequark/return_block.txt"
+      # Ripper cannot handle named capture groups in regular expressions.
+      "whitequark/lvar_injecting_match.txt"
     ]
 
     skips = incorrect | %w[
@@ -39,7 +36,6 @@ class RipperTest < TestCase
       regex_char_width.txt
       rescue.txt
       seattlerb/TestRubyParserShared.txt
-      seattlerb/block_break.txt
       seattlerb/block_call_dot_op2_brace_block.txt
       seattlerb/block_command_operation_colon.txt
       seattlerb/block_command_operation_dot.txt
@@ -89,7 +85,6 @@ class RipperTest < TestCase
       unparser/corpus/literal/module.txt
       unparser/corpus/literal/pattern.txt
       unparser/corpus/literal/send.txt
-      unparser/corpus/literal/since/27.txt
       unparser/corpus/literal/while.txt
       unparser/corpus/semantic/dstr.txt
       unparser/corpus/semantic/while.txt
@@ -102,13 +97,11 @@ class RipperTest < TestCase
       whitequark/empty_stmt.txt
       whitequark/if_elsif.txt
       whitequark/masgn_splat.txt
-      whitequark/numbered_args_after_27.txt
       whitequark/parser_bug_640.txt
       whitequark/parser_drops_truncated_parts_of_squiggly_heredoc.txt
       whitequark/parser_slash_slash_n_escaping_in_literals.txt
       whitequark/ruby_bug_11107.txt
       whitequark/ruby_bug_11990.txt
-      whitequark/ruby_bug_15789.txt
       whitequark/send_block_chain_cmd.txt
       whitequark/slash_newline_in_heredocs.txt
       whitequark/string_concat.txt