read-insn? ( object -- ? )

Vocabulary

compiler.cfg.instructions

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the read-insn class.

Definition

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

IN: compiler.cfg.instructions

: read-insn? ( object -- ? )
    dup tuple? [
        layout-of
        dup
        1
        slot
        13
        fixnum>=
        [
            13
            slot
            dup
            \ ##alien-global
            eq?
            [ drop t ]
            [
                dup \ ##vm-field eq?
                [ drop t ] [
                    dup \ ##slot-imm eq?
                    [ drop t ] [ \ ##slot eq? ] if
                ] if
            ]
            if
        ]
        [ drop f ]
        if
    ] [ drop f ] if ;