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Function INVOKE-RESTART-INTERACTIVELY

Syntax

  • invoke-restart-interactively restartresult*

Arguments and Values

Description

invoke-restart-interactively calls the function associated with restart, prompting for any necessary arguments. If restart is a name, it must be valid in the current dynamic environment.

invoke-restart-interactively prompts for arguments by executing the code provided in the :interactive keyword to restart-case or :interactive-function keyword to restart-bind.

If no such options have been supplied in the corresponding restart-bind or restart-case, then the consequences are undefined if the restart takes required arguments. If the arguments are optional, an argument list of nil is used.

Once the arguments have been determined, invoke-restart-interactively executes the following:

(apply #'invoke-restart restart arguments)

Examples

(defun add3 (x) (check-type x number) (+ x 3))

ADD3

(add3 'seven)

Error: The value SEVEN was not of type NUMBER. To continue, type :CONTINUE followed by an option number: 1: Specify a different value to use. 2: Return to Lisp Toplevel. Debug> (invoke-restart-interactively 'store-value) Type a form to evaluate and use: 7

10

Side Effects

If prompting for arguments is necesary, some typeout may occur (on query I/O).

A non-local transfer of control might be done by the restart.

Affected By

Exceptional Situations

If restart is not valid, an error of type control-error is signaled.

See Also

Notes

invoke-restart-interactively is used internally by the debugger and may also be useful in implementing other portable, interactive debugging tools.