But second calling `wg_input` causes error: ```ats #include "share/atspre_define.hats" #include "share/atspre_staload.hats"
typedef sockaddr_in = @{ sin_port = int, sin_addr = int, sin_zero = int } typedef sockaddr_in6 = @{ sin6_port = int, sin6_flowinfo = int, sin6_addr = int, sin6_scope_id = int } datatype sockaddr = | Af_inet of sockaddr_in | Af_inet6 of sockaddr_in6 vtypedef wg_endpoint = @{ e_remote = sockaddr } fun wg_input {l1,l2:addr} (pfe: !wg_endpoint? @ l1 >> wg_endpoint @ l1, pfso: !sockaddr@l2 | e: ptr l1, so: ptr l2): void = let val () = !e.e_remote := !so in () end implement main0 () = { var e: wg_endpoint var so: sockaddr = Af_inet @{ sin_port = 1, sin_addr = 2, sin_zero = 3 } var so6: sockaddr = Af_inet6 @{ sin6_port = 1, sin6_flowinfo = 2, sin6_addr = 3, sin6_scope_id = 4 } prval pre = view@e prval prso = view@so val () = wg_input(pre, prso | addr@e, addr@so) prval () = view@e := pre prval () = view@so := prso prval pre = view@e prval prso6 = view@so6 val () = wg_input(pre, prso6 | addr@e, addr@so6) prval () = view@e := pre prval () = view@so6 := prso6 } ``` ``` $ patscc -o a.out main.dats -DATS_MEMALLOC_LIBC /home/kiwamu/src/practice-ats/tagged_union/main.dats: 1042(line=56, offs=21) -- 1045(line=56, offs=24): error(3): the dynamic expression cannot be assigned the type [S2Eat(S2Etyrec(flt0; npf=-1; e_remote=S2Etop(knd=0; S2Ecst(sockaddr))), S2EVar(5246))]. /home/kiwamu/src/practice-ats/tagged_union/main.dats: 1042(line=56, offs=21) -- 1045(line=56, offs=24): error(3): mismatch of static terms (tyleq): The actual term is: S2Ecst(sockaddr) The needed term is: S2Ecst(ptr_type) /home/kiwamu/src/practice-ats/tagged_union/main.dats: 1042(line=56, offs=21) -- 1045(line=56, offs=24): error(3): mismatch of static terms (tyleq): The actual term is: S2Etyrec(flt0; npf=-1; e_remote=S2Ecst(sockaddr)) The needed term is: S2Etyrec(flt0; npf=-1; e_remote=S2Etop(knd=0; S2Ecst(sockaddr))) /home/kiwamu/src/practice-ats/tagged_union/main.dats: 1042(line=56, offs=21) -- 1045(line=56, offs=24): error(3): mismatch of static terms (tyleq): The actual term is: S2Eat(S2Etyrec(flt0; npf=-1; e_remote=S2Ecst(sockaddr)); S2Evar(e(8482))) The needed term is: S2Eat(S2Etyrec(flt0; npf=-1; e_remote=S2Etop(knd=0; S2Ecst(sockaddr))); S2EVar(5246->S2Evar(e(8482)))) ``` Following patch does fix the error: ```diff --- a/tagged_union/main.dats +++ b/tagged_union/main.dats @@ -51,6 +51,7 @@ implement main0 () = { prval () = view@e := pre prval () = view@so := prso + var e: wg_endpoint prval pre = view@e prval prso6 = view@so6 val () = wg_input(pre, prso6 | addr@e, addr@so6) ``` How to re-use initialized argument on `wg_input` function? Best regards, -- Kiwamu Okabe -- You received this message because you are subscribed to the Google Groups "ats-lang-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to ats-lang-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/ats-lang-users/CAEvX6d%3Dzhbz4Oxtu1vTLjRBjov0pnxDKDrF16hoOmrADz0hoQg%40mail.gmail.com.