Message messageFromMethodInvocation()

in lib/extract_messages.dart [599:655]
54 lines of code
8 McCabe index (conditional complexity)

  Message messageFromMethodInvocation(MethodInvocation node) {
    var message;
    switch (node.methodName.name) {
      case "gender":
        message = new Gender();
        break;
      case "plural":
        message = new Plural();
        break;
      case "select":
        message = new Select();
        break;
      default:
        throw new IntlMessageExtractionException(
            "Invalid plural/gender/select message ${node.methodName.name} "
            "in $node");
    }
    message.parent = parent;

    var arguments = message.argumentsOfInterestFor(node);
    arguments.forEach((key, value) {
      try {
        var interpolation = new InterpolationVisitor(message, extraction);
        value.accept(interpolation);
        // Might be null due to previous errors.
        // Continue collecting errors, but don't build message.
        if (message != null) {
          message[key] = interpolation.pieces;
        }
      } on IntlMessageExtractionException catch (e) {
        message = null;
        var err = new StringBuffer()
          ..writeAll(["Error ", e, "\nProcessing <", node, ">"])
          ..write(extraction._reportErrorLocation(node));
        var errString = err.toString();
        extraction.onMessage(errString);
        extraction.warnings.add(errString);
      }
    });
    var mainArg = node.argumentList.arguments
        .firstWhere((each) => each is! NamedExpression);
    if (mainArg is SimpleStringLiteral) {
      message.mainArgument = mainArg.toString();
    } else if (mainArg is SimpleIdentifier) {
      message.mainArgument = mainArg.name;
    } else {
      var err = new StringBuffer()
        ..write("Error (Invalid argument to plural/gender/select, "
            "must be simple variable reference) "
            "\nProcessing <$node>")
        ..write(extraction._reportErrorLocation(node));
      var errString = err.toString();
      extraction.onMessage(errString);
      extraction.warnings.add(errString);
    }
    return message;
  }