Vocabulary
syntax

Syntax

ERROR: class slots... ;

Inputs and outputs

class	a new tuple class to define
slots	a list of slot names

Word description
Defines a new tuple class whose class word throws a new instance of the error.

Notes
The following two snippets are equivalent:

ERROR: invalid-values x y ; TUPLE: invalid-values x y ; : invalid-values ( x y -- * ) \ invalid-values boa throw ;

Definition

USING: classes.tuple classes.tuple.parser kernel parser ;

IN: syntax

SYNTAX: ERROR:
parse-tuple-definition pick save-location
define-error-class ;