block-checksum? ( object -- ? )

Vocabulary

checksums.common

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the block-checksum class.

Definition

USING: checksums.md5 checksums.multi checksums.openssl
checksums.process checksums.ripemd checksums.sha
classes.tuple.private kernel slots.private ;

IN: checksums.common

: block-checksum? ( object -- ? )
    dup dup tuple? [
        layout-of
        7
        slot
        dup
        \ checksum-process
        eq?
        [ drop t ]
        [
            dup \ multi-checksum eq?
            [ drop t ] [ \ openssl-checksum eq? ] if
        ]
        if
    ] [ drop f ] if
    [ drop t ] [
        dup ripemd-160?
        [ drop t ] [ dup md5? [ drop t ] [ sha? ] if ] if
    ] if ;