Beautifier.prototype._set_tag_position = function()

in src/beautify/esm/beautify-html.js [2403:2495]

• 72 lines of code
• 40 McCabe index (conditional complexity)

Beautifier.prototype._set_tag_position = function(printer, raw_token, parser_token, last_tag_token, last_token) {

  if (!parser_token.is_empty_element) {
    if (parser_token.is_end_tag) { //this tag is a double tag so check for tag-ending
      parser_token.start_tag_token = this._tag_stack.try_pop(parser_token.tag_name); //remove it and all ancestors
    } else { // it's a start-tag
      // check if this tag is starting an element that has optional end element
      // and do an ending needed
      if (this._do_optional_end_element(parser_token)) {
        if (!parser_token.is_inline_element) {
          printer.print_newline(false);
        }
      }

      this._tag_stack.record_tag(parser_token); //push it on the tag stack

      if ((parser_token.tag_name === 'script' || parser_token.tag_name === 'style') &&
        !(parser_token.is_unformatted || parser_token.is_content_unformatted)) {
        parser_token.custom_beautifier_name = get_custom_beautifier_name(parser_token.tag_check, raw_token);
      }
    }
  }

  if (in_array(parser_token.tag_check, this._options.extra_liners)) { //check if this double needs an extra line
    printer.print_newline(false);
    if (!printer._output.just_added_blankline()) {
      printer.print_newline(true);
    }
  }

  if (parser_token.is_empty_element) { //if this tag name is a single tag type (either in the list or has a closing /)

    // if you hit an else case, reset the indent level if you are inside an:
    // 'if', 'unless', or 'each' block.
    if (parser_token.tag_start_char === '{' && parser_token.tag_check === 'else') {
      this._tag_stack.indent_to_tag(['if', 'unless', 'each']);
      parser_token.indent_content = true;
      // Don't add a newline if opening {{#if}} tag is on the current line
      var foundIfOnCurrentLine = printer.current_line_has_match(/{{#if/);
      if (!foundIfOnCurrentLine) {
        printer.print_newline(false);
      }
    }

    // Don't add a newline before elements that should remain where they are.
    if (parser_token.tag_name === '!--' && last_token.type === TOKEN.TAG_CLOSE &&
      last_tag_token.is_end_tag && parser_token.text.indexOf('\n') === -1) {
      //Do nothing. Leave comments on same line.
    } else {
      if (!(parser_token.is_inline_element || parser_token.is_unformatted)) {
        printer.print_newline(false);
      }
      this._calcluate_parent_multiline(printer, parser_token);
    }
  } else if (parser_token.is_end_tag) { //this tag is a double tag so check for tag-ending
    var do_end_expand = false;

    // deciding whether a block is multiline should not be this hard
    do_end_expand = parser_token.start_tag_token && parser_token.start_tag_token.multiline_content;
    do_end_expand = do_end_expand || (!parser_token.is_inline_element &&
      !(last_tag_token.is_inline_element || last_tag_token.is_unformatted) &&
      !(last_token.type === TOKEN.TAG_CLOSE && parser_token.start_tag_token === last_tag_token) &&
      last_token.type !== 'TK_CONTENT'
    );

    if (parser_token.is_content_unformatted || parser_token.is_unformatted) {
      do_end_expand = false;
    }

    if (do_end_expand) {
      printer.print_newline(false);
    }
  } else { // it's a start-tag
    parser_token.indent_content = !parser_token.custom_beautifier_name;

    if (parser_token.tag_start_char === '<') {
      if (parser_token.tag_name === 'html') {
        parser_token.indent_content = this._options.indent_inner_html;
      } else if (parser_token.tag_name === 'head') {
        parser_token.indent_content = this._options.indent_head_inner_html;
      } else if (parser_token.tag_name === 'body') {
        parser_token.indent_content = this._options.indent_body_inner_html;
      }
    }

    if (!(parser_token.is_inline_element || parser_token.is_unformatted) &&
      (last_token.type !== 'TK_CONTENT' || parser_token.is_content_unformatted)) {
      printer.print_newline(false);
    }

    this._calcluate_parent_multiline(printer, parser_token);
  }
};