DelegateValidator

Validates input based on delegate.

Delegate receives all arguments that IValidator.validate receives, that is information about entry being checked and an array of values to perform check on.

For less verbose usage, check validateWith and validateEachWith helper functions.

class DelegateValidator : IValidator {

alias ValidatorFunc = void delegate(IEntry, string[]);

ValidatorFunc validator;

this(ValidatorFunc validator);

void validate(IEntry entry, string[] args);

}

Constructors

this this(ValidatorFunc validator): Creates instance of DelegateValidator

Members

Aliases

ValidatorFunc alias ValidatorFunc = void delegate(IEntry, string[]): Validator function type

Functions

validate void validate(IEntry entry, string[] args): Validates input

Variables

validator ValidatorFunc validator;: Validator function

Inherited Members

From IValidator

validate void validate(IEntry entry, string[] values): Checks whenever specified input is valid.

Examples

1 new Program("rm")
2     .add(new Argument("target", "target to remove")
3         .validate(new DelegateValidator((entry, args) {
4              foreach (arg; args) {
5                  if (arg == "foo") throw new ValidationException("invalid number"); // would throw with "invalid number"
6              }
7         }))
8         // or
9         .validateEachWith((entry, arg) {
10              if (arg == "5") throw new ValidationException("invalid number"); // would throw with "invalid number"
11         })
12         // or
13         .validateEachWith(arg => isGood(arg), "must be good") // would throw with "flag a must be good"
14     )