Method recordUnparsed

packages/compiler/test/expression_parser/utils/unparser.ts:286–291

(ast: any, spanKey: string, unparsedList: UnparsedWithSpan[])

  const source = ast.source!;
  const recursiveSpanUnparser = new (class extends RecursiveAstVisitor {
    private recordUnparsed(ast: any, spanKey: string, unparsedList: UnparsedWithSpan[]) {
      const span = ast[spanKey];
      const prefix = spanKey === 'span' ? '' : `[${spanKey}] `;
      const src = source.substring(span.start, span.end);
      unparsedList.push([unparse(ast), prefix + src]);
    }

    override visit(ast: AST, unparsedList: UnparsedWithSpan[]) {
      this.recordUnparsed(ast, 'span', unparsedList);