From 41c7c126b2f499881982d761e086c6f0559f8225 Mon Sep 17 00:00:00 2001
From: Earlopain <14981592+Earlopain@users.noreply.github.com>
Date: Sat, 24 Jan 2026 16:51:30 +0100
Subject: [PATCH] Remove unneeded lex_compat token types

These are either fixed in prism or ruby/ripper itself.
---
 lib/prism/lex_compat.rb | 69 -----------------------------------------
 1 file changed, 69 deletions(-)

diff --git a/lib/prism/lex_compat.rb b/lib/prism/lex_compat.rb
index 597e63c73e..f2e789b6a4 100644
--- a/lib/prism/lex_compat.rb
+++ b/lib/prism/lex_compat.rb
@@ -233,50 +233,6 @@ def ==(other) # :nodoc:
       end
     end
 
-    # Ident tokens for the most part are exactly the same, except sometimes we
-    # know an ident is a local when ripper doesn't (when they are introduced
-    # through named captures in regular expressions). In that case we don't
-    # compare the state.
-    class IdentToken < Token
-      def ==(other) # :nodoc:
-        (self[0...-1] == other[0...-1]) && (
-          (other[3] == Translation::Ripper::EXPR_LABEL | Translation::Ripper::EXPR_END) ||
-          (other[3] & (Translation::Ripper::EXPR_ARG | Translation::Ripper::EXPR_CMDARG) != 0)
-        )
-      end
-    end
-
-    # Ignored newlines can occasionally have a LABEL state attached to them, so
-    # we compare the state differently here.
-    class IgnoredNewlineToken < Token
-      def ==(other) # :nodoc:
-        return false unless self[0...-1] == other[0...-1]
-
-        if self[3] == Translation::Ripper::EXPR_ARG | Translation::Ripper::EXPR_LABELED
-          other[3] & Translation::Ripper::EXPR_ARG | Translation::Ripper::EXPR_LABELED != 0
-        else
-          self[3] == other[3]
-        end
-      end
-    end
-
-    # If we have an identifier that follows a method name like:
-    #
-    #     def foo bar
-    #
-    # then Ripper will mark bar as END|LABEL if there is a local in a parent
-    # scope named bar because it hasn't pushed the local table yet. We do this
-    # more accurately, so we need to allow comparing against both END and
-    # END|LABEL.
-    class ParamToken < Token
-      def ==(other) # :nodoc:
-        (self[0...-1] == other[0...-1]) && (
-          (other[3] == Translation::Ripper::EXPR_END) ||
-          (other[3] == Translation::Ripper::EXPR_END | Translation::Ripper::EXPR_LABEL)
-        )
-      end
-    end
-
     # A heredoc in this case is a list of tokens that belong to the body of the
     # heredoc that should be appended onto the list of tokens when the heredoc
     # closes.
@@ -685,33 +641,8 @@ def result
             # want to bother comparing the state on them.
             last_heredoc_end = token.location.end_offset
             IgnoreStateToken.new([[lineno, column], event, value, lex_state])
-          when :on_ident
-            if lex_state == Translation::Ripper::EXPR_END
-              # If we have an identifier that follows a method name like:
-              #
-              #     def foo bar
-              #
-              # then Ripper will mark bar as END|LABEL if there is a local in a
-              # parent scope named bar because it hasn't pushed the local table
-              # yet. We do this more accurately, so we need to allow comparing
-              # against both END and END|LABEL.
-              ParamToken.new([[lineno, column], event, value, lex_state])
-            elsif lex_state == Translation::Ripper::EXPR_END | Translation::Ripper::EXPR_LABEL
-              # In the event that we're comparing identifiers, we're going to
-              # allow a little divergence. Ripper doesn't account for local
-              # variables introduced through named captures in regexes, and we
-              # do, which accounts for this difference.
-              IdentToken.new([[lineno, column], event, value, lex_state])
-            else
-              Token.new([[lineno, column], event, value, lex_state])
-            end
           when :on_embexpr_end
             IgnoreStateToken.new([[lineno, column], event, value, lex_state])
-          when :on_ignored_nl
-            # Ignored newlines can occasionally have a LABEL state attached to
-            # them which doesn't actually impact anything. We don't mirror that
-            # state so we ignored it.
-            IgnoredNewlineToken.new([[lineno, column], event, value, lex_state])
           when :on_regexp_end
             # On regex end, Ripper scans and then sets end state, so the ripper
             # lexed output is begin, when it should be end. prism sets lex state