class HamlLint::Linter::SpaceBeforeScript

def missing_space?(node)
  text = node.script
  !ALLOWED_SEPARATORS.include?(text[0]) if text
end

def visit_script(node)
  # Plain text nodes with interpolation are converted to script nodes, so we
  # need to ignore them here.
  return unless document.source_lines[node.line - 1].lstrip.start_with?('=')
  record_lint(node, MESSAGE_FORMAT % '=') if missing_space?(node)
end

def visit_silent_script(node)
  record_lint(node, MESSAGE_FORMAT % '-') if missing_space?(node)
end

def visit_tag(node) # rubocop:disable Metrics/CyclomaticComplexity
  # If this tag has inline script
  return unless node.contains_script?
  text = node.script.strip
  return if text.empty?
  tag_with_text = tag_with_inline_text(node)
  # For tags with inline text that contain interpolation, the parser
  # converts them to inline script by surrounding them in string quotes,
  # e.g. `%p Hello #{name}` becomes `%p= "Hello #{name}"`, causing the
  # above search to fail. Check for this case by removing added quotes.
  if !(index = tag_with_text.rindex(text)) && !((text_without_quotes = strip_surrounding_quotes(text)) &&
                 (index = tag_with_text.rindex(text_without_quotes)))
    return
  end
  return if tag_with_text[index] == '#' # Ignore code comments
  # Check if the character before the start of the script is a space
  # (need to do it this way as the parser strips whitespace from node)
  return unless tag_with_text[index - 1] != ' '
  record_lint(node, MESSAGE_FORMAT % '=')
end