wrapped-sequence? ( object -- ? )

Vocabulary

sequences

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the wrapped-sequence class.

Definition

USING: classes.tuple.private gap-buffer grouping kernel
sequences.extras slots.private ;

IN: sequences

: wrapped-sequence? ( object -- ? )
    dup tuple? [
        layout-of
        7
        slot
        dup
        \ gb
        eq?
        [ drop t ]
        [
            dup \ step-slice eq?
            [ drop t ] [
                dup \ circular-slice eq?
                [ drop t ] [
                    dup \ slice eq?
                    [ drop t ] [ \ sequence-view eq? ] if
                ] if
            ] if
        ]
        if
    ] [ drop f ] if ;