class RuboCop::Cop::Layout::SpaceInsideStringInterpolation

var = “This is the #{ space } example”
# good
var = “This is the #{no_space} example”
# bad
@example EnforcedStyle: space
var = “This is the #{no_space} example”
# good
var = “This is the #{ space } example”
# bad
@example EnforcedStyle: no_space (default)
This cop checks for whitespace within string interpolations.

def autocorrect(node) 

def autocorrect(node)
  new_source = style == :no_space ? node.source : " #{node.source} "
  lambda do |corrector|
    corrector.replace(
      range_with_surrounding_space(range: node.source_range),
      new_source
    )
  end
end

def each_style_violation(node) 

def each_style_violation(node)
  node.each_child_node(:begin) do |begin_node|
    final_node = begin_node.children.last
    next unless final_node
    if style == :no_space && space_on_any_side?(final_node)
      yield final_node
    elsif style == :space && !space_on_each_side?(final_node)
      yield final_node
    end
  end
end

def message(_node) 

def message(_node)
  style == :no_space ? NO_SPACE_MSG : SPACE_MSG
end

def on_dstr(node) 

def on_dstr(node)
  each_style_violation(node) do |final_node|
    add_offense(final_node)
  end
end

def space_on_any_side?(node) 

def space_on_any_side?(node)
  interp = node.source_range
  interp_with_surrounding_space =
    range_with_surrounding_space(range: interp)
  interp_with_surrounding_space != interp
end

def space_on_each_side?(node) 

def space_on_each_side?(node)
  interp = node.source_range
  interp_with_surrounding_space =
    range_with_surrounding_space(range: interp)
  interp_with_surrounding_space.source == " #{interp.source} "
end