write-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 write-insn class.

Definition

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

IN: compiler.cfg.instructions

: write-insn? ( object -- ? )
    dup tuple? [
        layout-of
        dup
        1
        slot
        11
        fixnum>=
        [
            11
            slot
            dup
            \ ##set-vm-field
            eq?
            [ drop t ]
            [
                dup \ ##set-slot-imm eq?
                [ drop t ] [ \ ##set-slot eq? ] if
            ]
            if
        ]
        [ drop f ]
        if
    ] [ drop f ] if ;