class-constraint? ( object -- ? ) (original) (raw)

class-constraint? ( object -- ? )

Vocabulary
compiler.tree.propagation.constraints

Inputs and outputs

Word description
Tests if the object is an instance of the class-constraint class.

Definition

USING: classes.tuple.private kernel slots.private ;

IN: compiler.tree.propagation.constraints

: class-constraint? ( object -- ? )
dup tuple?
[ layout-of 7 slot \ class-constraint eq? ] [ drop f ] if ;