Function luaK_dischargevars

src/Chain/libraries/glua/lcode.cpp:407–436

void luaK_dischargevars(FuncState *fs, expdesc *e) {
    switch (e->k) {
    case VLOCAL: {
        e->k = VNONRELOC;
        break;
    }
    case VUPVAL: {
        e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0);
        e->k = VRELOCABLE;
        break;
    }
    case VINDEXED: {
        OpCode op = OP_GETTABUP;  /* assume 't' is in an upvalue */
        freereg(fs, e->u.ind.idx);
        if (e->u.ind.vt == VLOCAL) {  /* 't' is in a register? */
            freereg(fs, e->u.ind.t);
            op = OP_GETTABLE;
        }
        e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx);
        e->k = VRELOCABLE;
        break;
    }
    case VVARARG:
    case VCALL: {
        luaK_setoneret(fs, e);
        break;
    }
    default: break;  /* there is one value available (somewhere) */
    }
}


static int code_label(FuncState *fs, int A, int b, int jump) {