1 files changed, 0 insertions, 163 deletions
diff --git a/lib/prism/debug.rb b/lib/prism/debug.rb
deleted file mode 100644
index 6cc0feb9b8..0000000000
--- a/lib/prism/debug.rb
+++ /dev/null
@@ -1,163 +0,0 @@
-# frozen_string_literal: true
-
-module Prism
-  # This module is used for testing and debugging and is not meant to be used by
-  # consumers of this library.
-  module Debug
-    class ISeq
-      attr_reader :parts
-
-      def initialize(parts)
-        @parts = parts
-      end
-
-      def type
-        parts[0]
-      end
-
-      def local_table
-        parts[10]
-      end
-
-      def instructions
-        parts[13]
-      end
-
-      def each_child
-        instructions.each do |instruction|
-          # Only look at arrays. Other instructions are line numbers or
-          # tracepoint events.
-          next unless instruction.is_a?(Array)
-
-          instruction.each do |opnd|
-            # Only look at arrays. Other operands are literals.
-            next unless opnd.is_a?(Array)
-
-            # Only look at instruction sequences. Other operands are literals.
-            next unless opnd[0] == "YARVInstructionSequence/SimpleDataFormat"
-
-            yield ISeq.new(opnd)
-          end
-        end
-      end
-    end
-
-    # For the given source, compiles with CRuby and returns a list of all of the
-    # sets of local variables that were encountered.
-    def self.cruby_locals(source)
-      verbose, $VERBOSE = $VERBOSE, nil
-
-      begin
-        locals = []
-        stack = [ISeq.new(RubyVM::InstructionSequence.compile(source).to_a)]
-
-        while (iseq = stack.pop)
-          # For some reason, CRuby occasionally pushes this special local
-          # variable when there are splat arguments. We get rid of that here.
-          locals << (iseq.local_table - [:"#arg_rest"])
-          iseq.each_child { |child| stack << child }
-        end
-
-        locals
-      ensure
-        $VERBOSE = verbose
-      end
-    end
-
-    AnonymousLocal = Object.new
-
-    # For the given source, parses with prism and returns a list of all of the
-    # sets of local variables that were encountered.
-    def self.prism_locals(source)
-      check_to_debug = ENV["RUBY_ISEQ_DUMP_DEBUG"] == "to_binary"
-
-      locals = []
-      stack = [Prism.parse(source).value]
-
-      while (node = stack.pop)
-        case node
-        when BlockNode, DefNode, LambdaNode
-          names = node.locals
-
-          params = node.parameters
-          params = params&.parameters unless node.is_a?(DefNode)
-
-          # prism places parameters in the same order that they appear in the
-          # source. CRuby places them in the order that they need to appear
-          # according to their own internal calling convention. We mimic that
-          # order here so that we can compare properly.
-          if params
-            sorted = [
-              *params.requireds.map do |required|
-                if required.is_a?(RequiredParameterNode)
-                  required.name
-                else
-                  AnonymousLocal
-                end
-              end,
-              *params.optionals.map(&:name),
-              *((params.rest.name || :*) if params.rest && params.rest.operator != ","),
-              *params.posts.map do |post|
-                if post.is_a?(RequiredParameterNode)
-                  post.name
-                else
-                  AnonymousLocal
-                end
-              end,
-              *params.keywords.reject(&:value).map(&:name),
-              *params.keywords.select(&:value).map(&:name)
-            ]
-
-            sorted << AnonymousLocal if params.keywords.any? && !check_to_debug
-
-            # Recurse down the parameter tree to find any destructured
-            # parameters and add them after the other parameters.
-            param_stack = params.requireds.concat(params.posts).grep(RequiredDestructuredParameterNode).reverse
-            while (param = param_stack.pop)
-              case param
-              when RequiredDestructuredParameterNode
-                param_stack.concat(param.parameters.reverse)
-              when RequiredParameterNode
-                sorted << param.name
-              when SplatNode
-                sorted << param.expression.name if param.expression
-              end
-            end
-
-            names = sorted.concat(names - sorted)
-          end
-
-          names.map!.with_index do |name, index|
-            if name == AnonymousLocal
-              names.length - index + 1 unless check_to_debug
-            else
-              name
-            end
-          end
-
-          locals << names.compact
-        when ClassNode, ModuleNode, ProgramNode, SingletonClassNode
-          locals << node.locals
-        when ForNode
-          locals << (check_to_debug ? [] : [2])
-        when PostExecutionNode
-          locals.push([], [])
-        when InterpolatedRegularExpressionNode
-          locals << [] if node.once?
-        end
-
-        stack.concat(node.compact_child_nodes)
-      end
-
-      locals
-    end
-
-    def self.newlines(source)
-      Prism.parse(source).source.offsets
-    end
-
-    def self.parse_serialize_file(filepath)
-      parse_serialize_file_metadata(filepath, [filepath.bytesize, filepath.b, 0].pack("LA*L"))
-    end
-  end
-end