toHtml method
Implementation
String toHtml() {
var str = '';
void _traverse(Node node) {
final shouldAddSpan = node.className != null &&
((node.value != null && node.value!.isNotEmpty) ||
(node.children != null && node.children!.isNotEmpty));
if (shouldAddSpan) {
var prefix = node.noPrefix ? '' : 'hljs-';
str += '<span class="${prefix + node.className!}">';
}
if (node.value != null) {
str += _escape(node.value!);
} else if (node.children != null) {
node.children!.forEach(_traverse);
}
if (shouldAddSpan) {
str += '</span>';
}
}
nodes!.forEach(_traverse);
return str;
}