interpolatedString method

Implementation

Parser<ExpressionNode> interpolatedString() =>
    ref1(
      token,
      [
        string('"""')
            .seq(ref0(stringInterpolationContentMultiDouble).plus())
            .seq(string('"""')),
        string("'''")
            .seq(ref0(stringInterpolationContentMultiSingle).plus())
            .seq(string("'''")),
        char('"')
            .seq(ref0(stringInterpolationContentDouble).plus())
            .seq(char('"')),
        char("'")
            .seq(ref0(stringInterpolationContentSingle).plus())
            .seq(char("'")),
      ].toChoiceParser(),
    ).map((token) {
      final parts = (token.value as List)[1] as List;
      final nodes = <DartNode>[];
      for (final p in parts) {
        if (p is DartNode) {
          nodes.add(p);
        } else if (p is String && p.isNotEmpty) {
          nodes.add(StringLiteralNode(p));
        }
      }
      if (nodes.length == 1 && nodes.first is ExpressionNode) {
        return nodes.first as ExpressionNode;
      }
      return InterpolatedStringNode(nodes);
    });