Better ripper event tests / handful of compatibility fixes

lib/prism/translation/ripper.rb

@@ -513,7 +513,12 @@ def parse
           bounds(location)
 
           if comment.is_a?(InlineComment)
-            on_comment(comment.slice)
+            # Inline comments always contain a newline if the line itself contains it
+            if result.source.source.bytesize > comment.location.end_offset
+              on_comment("#{comment.slice}\n")
+            else
+              on_comment(comment.slice)
+            end
           else
             offset = location.start_offset
             lines = comment.slice.lines
@@ -1577,7 +1582,6 @@ def visit_constant_path_write_node(node)
       # ^^^^^^^^^^^^^^^
       def visit_constant_path_operator_write_node(node)
         target = visit_constant_path_write_node_target(node.target)
-        value = visit(node.value)
 
         bounds(node.binary_operator_loc)
         operator = on_op("#{node.binary_operator}=")
@@ -1591,7 +1595,6 @@ def visit_constant_path_operator_write_node(node)
       # ^^^^^^^^^^^^^^^^
       def visit_constant_path_and_write_node(node)
         target = visit_constant_path_write_node_target(node.target)
-        value = visit(node.value)
 
         bounds(node.operator_loc)
         operator = on_op("&&=")
@@ -1605,7 +1608,6 @@ def visit_constant_path_and_write_node(node)
       # ^^^^^^^^^^^^^^^^
       def visit_constant_path_or_write_node(node)
         target = visit_constant_path_write_node_target(node.target)
-        value = visit(node.value)
 
         bounds(node.operator_loc)
         operator = on_op("||=")
@@ -2357,6 +2359,8 @@ def visit_lambda_node(node)
                 visit(node.parameters.parameters)
               end
 
+            visit_all(node.parameters.locals)
+
             if node.parameters.opening_loc.nil?
               params
             else

test/prism/ruby/ripper_test.rb

@@ -82,6 +82,41 @@ class RipperTest < TestCase
       "whitequark/procarg0.txt",
     ]
 
+    omitted_scan = [
+      "dos_endings.txt",
+      "heredocs_with_fake_newlines.txt",
+      "rescue_modifier.txt",
+      "seattlerb/block_call_dot_op2_brace_block.txt",
+      "seattlerb/block_command_operation_colon.txt",
+      "seattlerb/block_command_operation_dot.txt",
+      "seattlerb/case_in.txt",
+      "seattlerb/heredoc__backslash_dos_format.txt",
+      "seattlerb/heredoc_backslash_nl.txt",
+      "seattlerb/heredoc_nested.txt",
+      "seattlerb/heredoc_squiggly_blank_line_plus_interpolation.txt",
+      "seattlerb/heredoc_squiggly_empty.txt",
+      "seattlerb/masgn_command_call.txt",
+      "seattlerb/messy_op_asgn_lineno.txt",
+      "seattlerb/op_asgn_primary_colon_const_command_call.txt",
+      "seattlerb/parse_pattern_076.txt",
+      "tilde_heredocs.txt",
+      "unparser/corpus/literal/assignment.txt",
+      "unparser/corpus/literal/pattern.txt",
+      "unparser/corpus/semantic/dstr.txt",
+      "variables.txt",
+      "whitequark/dedenting_heredoc.txt",
+      "whitequark/masgn_nested.txt",
+      "whitequark/numparam_ruby_bug_19025.txt",
+      "whitequark/op_asgn_cmd.txt",
+      "whitequark/parser_drops_truncated_parts_of_squiggly_heredoc.txt",
+      "whitequark/parser_slash_slash_n_escaping_in_literals.txt",
+      "whitequark/pattern_matching_nil_pattern.txt",
+      "whitequark/ruby_bug_12402.txt",
+      "whitequark/ruby_bug_18878.txt",
+      "whitequark/send_block_chain_cmd.txt",
+      "whitequark/slash_newline_in_heredocs.txt",
+    ]
+
     Fixture.each_for_current_ruby(except: incorrect | omitted_sexp_raw) do |fixture|
       define_method("#{fixture.test_name}_sexp_raw") { assert_ripper_sexp_raw(fixture.read) }
     end
@@ -100,6 +135,9 @@ def test_lex_ignored_missing_heredoc_end
       end
     end
 
+    UNSUPPORTED_EVENTS = %i[backtick comma heredoc_beg heredoc_end ignored_nl kw label_end lbrace lbracket lparen nl op rbrace rbracket rparen semicolon sp symbeg tstring_beg tstring_end words_sep ignored_sp]
+    SUPPORTED_EVENTS = Translation::Ripper::EVENTS - UNSUPPORTED_EVENTS
+
     module Events
       attr_reader :events
 
@@ -108,9 +146,9 @@ def initialize(...)
         @events = []
       end
 
-      Prism::Translation::Ripper::PARSER_EVENTS.each do |event|
+      SUPPORTED_EVENTS.each do |event|
         define_method(:"on_#{event}") do |*args|
-          @events << [event, *args]
+          @events << [event, *args.map(&:to_s)]
           super(*args)
         end
       end
@@ -126,28 +164,25 @@ class PrismEvents < Translation::Ripper
 
     class ObjectEvents < Translation::Ripper
       OBJECT = BasicObject.new
-      Prism::Translation::Ripper::PARSER_EVENTS.each do |event|
+      SUPPORTED_EVENTS.each do |event|
         define_method(:"on_#{event}") { |*args| OBJECT }
       end
     end
 
-    Fixture.each_for_current_ruby(except: incorrect) do |fixture|
+    Fixture.each_for_current_ruby(except: incorrect | omitted_scan) do |fixture|
       define_method("#{fixture.test_name}_events") do
         source = fixture.read
         # Similar to test/ripper/assert_parse_files.rb in CRuby
         object_events = ObjectEvents.new(source)
         assert_nothing_raised { object_events.parse }
-      end
-    end
 
-    def test_events
-      source = "1 rescue 2"
-      ripper = RipperEvents.new(source)
-      prism = PrismEvents.new(source)
-      ripper.parse
-      prism.parse
-      # This makes sure that the content is the same. Ordering is not correct for now.
-      assert_equal(ripper.events.sort, prism.events.sort)
+        ripper = RipperEvents.new(source)
+        prism = PrismEvents.new(source)
+        ripper.parse
+        prism.parse
+        # This makes sure that the content is the same. Ordering is not correct for now.
+        assert_equal(ripper.events.sort, prism.events.sort)
+      end
     end
 
     def test_lexer