class RuboCop::Cop::Layout::SpaceInsideParens


y()
g = ( a + 3 )
f( 3 )
# good
y( )
g = (a + 3)
f(3)
# bad
# Note: Empty parentheses should not have spaces.
# beginning and end.
# The ‘space` style enforces that parentheses have a space at the
@example EnforcedStyle: space
g = (a + 3)
f(3)
# good
g = (a + 3 )
f( 3)
# bad
# The `no_space` style enforces that parentheses do not have spaces.
@example EnforcedStyle: no_space (default)
Checks for spaces inside ordinary round parentheses.

def autocorrect(range) 

def autocorrect(range)
  lambda do |corrector|
    if style == :space
      corrector.insert_before(range, ' ')
    else
      corrector.remove(range)
    end
  end
end

def can_be_ignored?(token1, token2) 

def can_be_ignored?(token1, token2)
  return true unless parens?(token1, token2)
  # If the second token is a comment, that means that a line break
  # follows, and that the rules for space inside don't apply.
  return true if token2.comment?
  return true unless same_line?(token1, token2) && !token1.space_after?
end

def each_extraneous_space(tokens) 

def each_extraneous_space(tokens)
  tokens.each_cons(2) do |token1, token2|
    next unless parens?(token1, token2)
    # If the second token is a comment, that means that a line break
    # follows, and that the rules for space inside don't apply.
    next if token2.comment?
    next unless same_line?(token1, token2) && token1.space_after?
    yield range_between(token1.end_pos, token2.begin_pos)
  end
end

def each_missing_space(tokens) 

def each_missing_space(tokens)
  tokens.each_cons(2) do |token1, token2|
    next if can_be_ignored?(token1, token2)
    if token1.left_parens?
      yield range_between(token2.begin_pos, token2.begin_pos + 1)
    elsif token2.right_parens?
      yield range_between(token2.begin_pos, token2.end_pos)
    end
  end
end

def investigate(processed_source) 

def investigate(processed_source)
  @processed_source = processed_source
  if style == :space
    each_missing_space(processed_source.tokens) do |range|
      add_offense(range, location: range, message: MSG_SPACE)
    end
  else
    each_extraneous_space(processed_source.tokens) do |range|
      add_offense(range, location: range)
    end
  end
end

def parens?(token1, token2) 

def parens?(token1, token2)
  token1.left_parens? || token2.right_parens?
end

def same_line?(token1, token2) 

def same_line?(token1, token2)
  token1.line == token2.line
end