class RuboCop::Cop::Style::HashExcept


{foo: 1, bar: 2, baz: 3}.except(:bar)
# good
{foo: 1, bar: 2, baz: 3}.filter {|k, v| !%i[foo bar].include?(k) }
{foo: 1, bar: 2, baz: 3}.select {|k, v| !%i[foo bar].include?(k) }
{foo: 1, bar: 2, baz: 3}.reject {|k, v| %i[foo bar].include?(k) }
{foo: 1, bar: 2, baz: 3}.filter {|k, v| k != :bar }
{foo: 1, bar: 2, baz: 3}.select {|k, v| k != :bar }
{foo: 1, bar: 2, baz: 3}.reject {|k, v| k == :bar }
# bad
@example
is a ‘Hash` or responds to the replacement method.
This cop is unsafe because it cannot be guaranteed that the receiver
@safety
And do not check `Hash#delete_if` and `Hash#keep_if` to change receiver object.
when used `==`.
For safe detection, it is limited to commonly used string and symbol comparisons
(`Hash#except` was added in Ruby 3.0.)
This cop should only be enabled on Ruby version 3.0 or higher.
that can be replaced with `Hash#except` method.
Checks for usages of `Hash#reject`, `Hash#select`, and `Hash#filter` methods

def bad_method?(block)

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity 
def bad_method?(block)
  if active_support_extensions_enabled?
    bad_method_with_active_support?(block) do |key_arg, send_node|
      if send_node.method?(:in?) && send_node.receiver&.source != key_arg.source
        return false
      end
      return true if !send_node.method?(:include?) && !send_node.method?(:exclude?)
      send_node.first_argument&.source == key_arg.source
    end
  else
    bad_method_with_poro?(block) do |key_arg, send_node|
      !send_node.method?(:include?) || send_node.first_argument&.source == key_arg.source
    end
  end
end

def decorate_source(value) 

def decorate_source(value)
  return ":\"#{value.source}\"" if value.dsym_type?
  return "\"#{value.source}\"" if value.dstr_type?
  return ":#{value.source}" if value.sym_type?
  "'#{value.source}'"
end

def except_key(node) 

def except_key(node)
  key_argument = node.argument_list.first.source
  body = extract_body_if_negated(node.body)
  lhs, _method_name, rhs = *body
  return if [lhs, rhs].map(&:source).none?(key_argument)
  [lhs, rhs].find { |operand| operand.source != key_argument }
end

def except_key_source(key) 

def except_key_source(key)
  if key.array_type?
    key = if key.percent_literal?
            key.each_value.map { |v| decorate_source(v) }
          else
            key.each_value.map(&:source)
          end
    return key.join(', ')
  end
  key.literal? ? key.source : "*#{key.source}"
end

def extract_body_if_negated(body) 

def extract_body_if_negated(body)
  return body unless body.method?('!')
  body.receiver
end

def included?(negated, body) 

def included?(negated, body)
  body.method?('include?') || body.method?('in?') || (negated && body.method?('exclude?'))
end

def not_included?(negated, body) 

def not_included?(negated, body)
  body.method?('exclude?') || (negated && (body.method?('include?') || body.method?('in?')))
end

def offense_range(node) 

def offense_range(node)
  range_between(node.loc.selector.begin_pos, node.parent.loc.end.end_pos)
end

def on_send(node) 

def on_send(node)
  block = node.parent
  return unless bad_method?(block) && semantically_except_method?(node, block)
  except_key = except_key(block)
  return if except_key.nil? || !safe_to_register_offense?(block, except_key)
  range = offense_range(node)
  preferred_method = "except(#{except_key_source(except_key)})"
  add_offense(range, message: format(MSG, prefer: preferred_method)) do |corrector|
    corrector.replace(range, preferred_method)
  end
end

def safe_to_register_offense?(block, except_key) 

def safe_to_register_offense?(block, except_key)
  extracted = extract_body_if_negated(block.body)
  if extracted.method?('in?') || extracted.method?('include?') ||
     extracted.method?('exclude?')
    return true
  end
  return true if block.body.method?('eql?')
  except_key.sym_type? || except_key.str_type?
end

def semantically_except_method?(send, block) 

def semantically_except_method?(send, block)
  body = block.body
  negated = body.method?('!')
  body = body.receiver if negated
  case send.method_name
  when :reject
    body.method?('==') || body.method?('eql?') || included?(negated, body)
  when :select, :filter
    body.method?('!=') || not_included?(negated, body)
  else
    false
  end
end