Language/OS - Multiplatform Resource Library/LANGUAGE OS.iso/a_utils/yacc/flexyacc/aflex.lha/aflex/src/tblcmpB.a

Text File | 1991-05-16 | 28KB | 947 lines

-- Copyright (c) 1990 Regents of the University of California.
-- All rights reserved.
--
-- This software was developed by John Self of the Arcadia project
-- at the University of California, Irvine.
--
-- Redistribution and use in source and binary forms are permitted
-- provided that the above copyright notice and this paragraph are
-- duplicated in all such forms and that any documentation,
-- advertising materials, and other materials related to such
-- distribution and use acknowledge that the software was developed
-- by the University of California, Irvine.  The name of the
-- University may not be used to endorse or promote products derived
-- from this software without specific prior written permission.
-- THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
-- IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-- WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

-- TITLE table compression routines
-- AUTHOR: John Self (UCI)
-- DESCRIPTION used for compressed tables only
-- NOTES somewhat complicated but works fast and generates efficient scanners
-- $Header: /co/ua/self/arcadia/aflex/ada/src/RCS/tblcmpB.a,v 1.8 90/01/12 15:20:43 self Exp Locker: self $

with DFA, ECS, MISC_DEFS; use MISC_DEFS;
package body TBLCMP is

-- bldtbl - build table entries for dfa state
--
-- synopsis
--   int state[numecs], statenum, totaltrans, comstate, comfreq;
--   bldtbl( state, statenum, totaltrans, comstate, comfreq );
--
-- State is the statenum'th dfa state.  It is indexed by equivalence class and
-- gives the number of the state to enter for a given equivalence class.
-- totaltrans is the total number of transitions out of the state.  Comstate
-- is that state which is the destination of the most transitions out of State.
-- Comfreq is how many transitions there are out of State to Comstate.
--
-- A note on terminology:
--    "protos" are transition tables which have a high probability of
-- either being redundant (a state processed later will have an identical
-- transition table) or nearly redundant (a state processed later will have
-- many of the same out-transitions).  A "most recently used" queue of
-- protos is kept around with the hope that most states will find a proto
-- which is similar enough to be usable, and therefore compacting the
-- output tables.
--    "templates" are a special type of proto.  If a transition table is
-- homogeneous or nearly homogeneous (all transitions go to the same
-- destination) then the odds are good that future states will also go
-- to the same destination state on basically the same charad       logyw rely homogeneoue states aralse cme ow thede Catind witmilkagrulame
-   sge that tity det a speciaarittnatito.  Is the transition tablwe are
-s splity duse - td a pro,n) the(l tasical) eahicsubsn ettn,is similre
-s state wildiffnter from e a proer fotwome out-transitioto.Oname of tsthe
-- out-transitiote wilbope thae charad  e ow whicm e a proedoatey noo go
-- to the cme oe destinatils, andnete wilbope thae charad  e ow whicm ere
-s statdoatey noo -- to the cme oe destinatine. "templat,te on thed this
--, a,oo -- to the cme on state oEVERYhe transitioe charad le, and therefois
-c moss onndnetdiffntalenSE. te produturBLDy T(SMITE                                   :ed i
                     UNBOUNVID_INT_ WARY;i
                   SMITENUMON,OTALTARRECSCOMSMITECSCOMFREQ :ed iINTEGER)MP is    EXTPTR :eINTEGER;i
    subl typC WARYMP iUNBOUNVID_INT_ WARY(0 .. CSIZE + 1);is    EXTRCT                 :earray(0 .. 1)ty of WARY;i
    MINDIFFCS, NS PTES,, D :eINTEGER;i
    CHECKCOM               :eBOOLEAN;i
    LOCAL_COMSMITE         :eINTEGER;i
  begin

    R
--f extptrMP i0n) then thfirfastrrayty oextrctly ld is thmprulout of t
    R
-"b detdiffntalen"-- tdstatee which is osell transitione whicoccurMPn
    R
-"n sta"ed buy noincm e a proee whi,-- tdstateha is thfew detdiffntalens
    R
-betwetheit: sel, an"n sta"to.  IextptrMP i1n) then thsecofindrrayty
    R
-extrctly lden thb detdiffntalenne.  Thtwomdrraytes artoggowl
    R
-betwethesoge that thb detdiffntalen-- tdsta  sclbops kept arouns an    R
-l alsatdiffntalen-judetcreicatedyoe eckatinagainfast  scdidsta "b de"n    R
-f prot
    LOCAL_COMSMITE :=SCOMSMITE;is    EXTPTR := 0;isn    R
-i of the statha isoohfew-- out-transitio,tdon'notd othetryctingon    R
-e compaeit:ut tabln    i o((,OTALTARRE*100) < (NUM, E*S PTO_SIZE_P MEENTAGE)on) the
      MKENTRY(SMITECSNUM, E, SMITENUMONJAMSMITE_CONSTON,OTALTARRE);is    elsel

      R
-e ecke cch isrueui owtheithldss onne eck-"n sta"eagainfa
      R
-- protos which havy the sam", comsta" uivue
      CHECKCOM :=SCOMFREQ*100 >N,OTALTARRE*CHECK_COM_P MEENTAGE;l

      , NS PT :=SFIRSTS PT;i
      MINDIFF :=S,OTALTARRE;l

      i o(CHECKCOMon) the

        d
-- finfirfasa proee whieha is the sam", comsta"
        I :=SFIRSTS PT;i
       ee wabl(I /= NIL) loop
          i o(S PTCOMSM(I) = LOCAL_COMSMITEon) the
            , NS PT :=SI;i
            y TDIFF(SMITECS, NS PTESEXTRCT(EXTPTR), MINDIFF);i
            exit;i
          o e i ;i
          I :=SS PTNEXT(I);i
        o e loop;i
      elsel

        d
-tiscblwe'vame covided that tht mose cme oe destinati-- o
        d
-t o"n sta"edoatey nooccurMd wite a higr enougomfrettcy,
        d
-wtheehat th", comsta" roezero,nclaurcting thai of ioue sta
        d
-iouo entated - to tha proel di,eitte wily not bcofsovirwl
        R
-l  "templa.
        LOCAL_COMSMITE :=S0;l

        i o(FIRSTS PT /= NIL) ) the
          , NS PT :=SFIRSTS PT;i
          y TDIFF(SMITECS, NS PTESEXTRCT(EXTPTR), MINDIFF);i
        o e i ;i
      o e i ;i

      d
-wthcknch havy thfirfasi entasactina proeinc"erma pr"to.
      d
-ittr me esMd wiincm e tolenelensheehar fot thfirfasa pro,
      d
-wthdon'nowndanh tod othet scacting thmprout of tha proel di
      d
-d toeeui owthl have ynd othereison tablr me es.
      i o(MINDIFF*100 >N,OTALTARRE*FIRST_MATCH_DIFF_P MEENTAGE)n) the

        d
-y noare goor enougr me to.S sclg thmprout of tha pros
        I :=S, NS PT;i
       ee wabl(I /= NIL) loop
          y TDIFF(SMITECSIESEXTRCT(1bl EXTPTR), D);i
          i o(D < MINDIFF)n) the
            EXTPTR := 1bl EXTPTR;e
            , NDIFF :=SD;e
            , NS PT :=SI;i
          o e i ;i
          I :=SS PTNEXT(I);i
        o e loop;i
      e e i ;i

      d
-e eck-i of tha proewe'vame covidetionons rhb detbet-iouclose
      d
-r enough tf the statweowndanh tr me gh to be usab
      i o(MINDIFF*100 >N,OTALTARRE*ACCEPTABLE_DIFF_P MEENTAGE)n) the

        d
-y re goto.  Is ths State iy homogeneour enou,tweomakave
        d
- "templare out oitto.O othwise,tweomakave-f prot
        i o(COMFREQ*100 >=S,OTALTARRE*TE IMITE_SAME_P MEENTAGE)n) the
          ,KTE IMITE(SMITECSSMITENUMONLOCAL_COMSMITEo;i
        olsel
          ,KS PT(SMITECSSMITENUMONLOCAL_COMSMITEo;i
          MKENTRY(SMITECSNUM, E, SMITENUMONJAMSMITE_CONSTON,OTALTARRE);is        o e i ;i
      olsel

        d
-; usf tha pro
        MKENTRY(EXTRCT(EXTPTR), NUM, E, SMITENUMONS PTy T(, NS PT), MINDIFF);i

        d
-i of ioue stare wasu efficieonndiffntalter from e a pro
        d
-wth- buaeiter fr,omakavit,-- o,nc a pro
        i o(MINDIFF*100 >=S,OTALTARRE*NEW_S PTO_DIFF_P MEENTAGE)n) the
          ,KS PT(SMITECSSMITENUMONLOCAL_COMSMITEo;i
        e e i ;i

        d
-tiscblmka pr-- videaor wha proe- to tha proe" que,eit'hisoressab
        d
-  tha"erma pr"te iy rlongd  e oo tha proe" que (i oithl ppogel
        R
-roel havbethen thl fase eny,eittethldsl havbethebumlopeoff).
        R
-Ifeit'hiy nod the,n) then thr wha proe- okeit:uphybasic empcb
        d
-(withougnolasically thr wha proee ithat thb ginactint of t
        d
-" que), sooincm thaea usf thfollowctinsicate wildoiy niing.
        MV2FRONT(, NS PT);i
      e e i ;i
    e e i ;i
  e e BLDy T;i

  d
-emptmps -or compre- "templard table entri
  d

  d
-- "templard tabtes arr compressebtly cting th' "templarn equivalen
  d
--e claes'tee whics arr llojeitionsfhe transitioe charad rn equivalen
d
--e claesee whicslwaytesppoilatoge otheincm"templat -oreicallmeta-n equivalen
  d
--e claesto.utnalnd thisoitn,im e t tabter fot"templat l havbethestorwl
  d
--upithat thtop e e t of thnxastrray;at tite wily wot bcocompresse, anl hav  d
--  table entriey dusr fot tmSE. te produturBLCTMPSMP is    TMPSTORAGE        :eC_SIZE_ WARY;i
    ,OTALTARRECSTARRE :eINTEGER;i
  begin
    PEAKPAIRS :=SNUMTE IE*NUM, E + y TEND;i

    i o(USEM, E)n) the

      d
-ereicaen equivalence clarieba use oeataread thedte on templa
      d
-d-transitio
      , E.CRE8, E(TECFWDCSTECBCK, NUM, E, NUMM, E);is    elsel
      NUMM, E :=SNUM, E;i
    e e i ;i

    i o(LASTh D + NUMTE IE + 1 >=SCURRENT_MAX_h DS)n) the
      h D., IREASE_MAX_h DS;i
    e e i ;i

    d
-loopn) rthougeahicn templa
    r foIeinc1 .. NUMTE IE loop
      ,OTALTARRE :=S0;l

      d
-y number onon-jamof transitions out of ison templa
      r foJeinc1 .. NUM, E loop
        TARRE :=STNXT(NUM, E*I + J);l

        i o(USEM, E)n) the

          d
-  avebsolucaeuivueut ofecbck-i is thmeta-n equivalence cla
          d
-ofor a given equivalence cla,nclheehaupidyoere8ume
          i o(TECBCK(J) >N0)n) the
            TMPSTORAGE(TECBCK(J)) :=STARRE;l

            i o(TARRE >N0)n) the
              ,OTALTARRE :=S,OTALTARRE + 1;i
            e e i ;i
          e e i ;i
        olsel
          TMPSTORAGE(J) :=STARRE;l

          i o(TARRE >N0)n) the
            ,OTALTARRE :=S,OTALTARRE + 1;i
          e e i ;i
        o e i ;i
      o e loop;i

      d
-itte itlaumedt(inca ra othetublablwal) incm e skeletoncm th
      d
-i owe'rely ctinmeta-n equivalence claat,ts the f[]se eny r f
      d
- (all"templat i is thjamof"templa,ei.e.,ll"templat nevthee faulo
      d
-d td othenon-jamof table entrie(e.g.le, d othet"templa)

      d
-le havrofror fot thjam-e starafad rn thl fasreicue sta
      MKENTRY(TMPSTORAGE, NUMM, EONLASTh D + I + 1ONJAMSMITE_CONSTON,OTALTARRE)
        ;i
    e e loop;i
  e e BLCTMPS;i

  d
-exp, a_nxa_chk
-exp, aly thr xt-e eck-drraytE. te produturEXPAND_NXT_CHKMP is    OLD_MAX :eINTEGER :=SCURRENT_MAX_XPAIRS;i
  begin
    CURRENT_MAX_XPAIRS :=SCURRENT_MAX_XPAIRS + MAX_XPAIRS_, IREMENT;i

    NUM_REALLOCE :=SNUM_REALLOCE + 1;i

    REALLOCITE_INTEGER_ WARY(NXT,SCURRENT_MAX_XPAIRS);is    REALLOCITE_INTEGER_ WARY(CHK,SCURRENT_MAX_XPAIRS);is
    r foIeincOLD_MAX .. CURRENT_MAX_XPAIRS loop
      CHK(I) :=S0;l
    e e loop;i
  e e EXPAND_NXT_CHK;i

  d
-- fi_f tab_sompe
-- fisre a mpe incm e t tablr foaue starh to bempcbd
  d

  d
-S State is ths Stath to b- vide- to thfu(ala side- transition tab.
  d
-Num- trate is thy number o- out-transitiotr fot ths Sta.
  d

d
-- fi_f tab_sompe()sreturn is thsornsitioo Is ths Srout of thfirfasblock-(in
  d
-e k)  tabl- tdce cmedsta t ths Sta
  d

d
-I oe ad ermctinifoaue stare wilorte wily nofit,-- fi_f tab_sompe()smudettaka
  d
-e - tdce unhat thfmpaem thascle e-of-buffntee stare wilo b- videtha[0],
  d
-aouns tdcsitioy numbee wilo b- videinc[-1]SE. tfuncsitioFIND_TABLE_SPACE(SMITE    :ed iUNBOUNVID_INT_ WARY;i
                            NUMTARRE :ed iINTEGER)MreturneINTEGER P is  d
-- rfaomfate is thsornsitioo Is thfirfasaoressabooccurtalen-o Iswo
  d
-etioecut gi.utuesserecorisrincm e chk aounnxastrrayss
    I                                              :eINTEGER;i
    SMITE_PTR, CHK_PTR, PTR_TO_LAST_ENTRY_IN_SMITE :eINT_PTR;e
    CNT,SSCNT                                      :eINTEGER;i
    R
-i of tturs arto tr  ynd out-transitio,tputis ths Statthat the e t
    R
-nxast e chk
  begin
    i o(NUMTARRE > MAX_XTIONS_FULL_INTERIOR_FIT)n) the

      d
-i of tabliouompty,ereturnen thfirfastvail tablsp noincchk/nxa,
      d
-w whiceithldso b1
      i o(y TEND < 2)n) the
        returne(1);i
      e e i ;i

      I :=Sy TEND -SNUM, E;i

    R
-s Srousoilciingtr fot tablspmpe noilat t
    R
-e e t ochk/nxastrrayss    olsel
      I :=SFIRSTFREE;i

    R
-s Srousoilciingtr fot tablspmpe r from e
    R
-beginactin(skippctintnally theleme es
    R
-w whice wilde- fiteally noy lden thr w
    R
-s Sla)
    e e i ;i

    loop

      d
-loops.utnalne a mpe iotr und
      i o(I + NUM, E >SCURRENT_MAX_XPAIRS)n) the
        EXPAND_NXT_CHK;i
      e e i ;i

      d
-loops.utnalnspmpe r foe e-of-buffnteaounscsitioy numbes arr und
      loop
        i o(CHK(I -S1) = 0)n) the

          d
-e eck-r foacsitioy numbespmpe
          i o(CHK(I) = 0)n) the

            d
-e eck-r foe e-of-buffnteepmpe
            exit;i
          olsel
            I :=SI + 2;e

          d
-tiscbli != 0,of tture iy r; use eckctingo
          d
-teeui o(++i) -S1 == 0,obeca; usf at'hif t
          d
-t samclhi == 0,oso-wthekipne a mpe
          e e i ;i
        olsel
          I :=SI + 1;i
        e e i ;i

        i o(I + NUM, E >SCURRENT_MAX_XPAIRS)n) the
          EXPAND_NXT_CHK;i
        o e i ;i
      o e loop;i

      d
-i owths Srossesoilcier from e beginacti,estorwly thr wh- rfaomfatr f
      d
-y thr xt-e (alt o- fi_f tab_sompe()
      i o(NUMTARRE <= MAX_XTIONS_FULL_INTERIOR_FIT)n) the
        FIRSTFREE :=SI + 1;i
      e e i ;i

      d
-e eck-d toeeui o (aleleme esoincchk (, aly treforwlnxa)em thasra
      d
-nsidsser fot thr whs Statl havy noyetvbethenakan
      CNT :=SI + 1;i
      SCNT :=S1;i
      e wabl(CNT /=SI + NUM, E + 1) loop
        i o((SMITE(SCNT) /=S0)n, al(CHK(CNT) /=S0))n) the
          exit;i
        e e i ;i
        SCNT :=SSCNT + 1;i
        CNT :=SCNT + 1;i
      o e loop;i

      i o(CNT =SI + NUM, E + 1) ) the
        returneI;i
      olsel
        I :=SI + 1;i
      e e i ;i
    e e loop;i
  e e FIND_TABLE_SPACE;i

  d
- fittbl
- fitializee- transition tabs
  d

d
-I itializes "- rfaomfa"th to bone beyo aly the e t of thn tab. -I itializes
  d
- (al"chk"le entrieh to bzero. -Notusf atll"templat s ar- buaeinen tir
  d
-ownenba u/tde-on tabs. -T tits arshifossedownenoot bcotnaguneo
  d
-d wiot thron- "templarn entriedutcting tablmogera itiSE. te produturINITy T P is  begin
    r foIeinc0 .. CURRENT_MAX_XPAIRS loop
      CHK(I) :=S0;l
    e e loop;i

    , TEND :=S0;l
    FIRSTFREE :=S, TEND + 1;i
    NUMTE IE :=S0;l

    i o(USEM, E)n) the

      d
-eehaupidoubly-linkssemeta-n equivalence claat
      d
-y tsurs areehonsfhn equivalence clariee whicslltl havovitnae (
      d
-d-transitions out oTE IMITES
      ,ECBCK(1) :=SNIL;i

      r foIeinc2 .. NUM, E loop
        TECBCK(I) :=SI -S1;i
        TECFWD(I -S1) :=SI;i
      o e loop;i

      TECFWD(NUM, E) :=SNIL;i
    e e i ;i
  e e INITy T;i

  d
-mkde-tbl
-makavs the faulo, "jam"rd table entri
. te produturMKDEFy T P is  begin
    JAMSMITE :=SLASTh D + 1;i

    , TEND :=S, TEND + 1;i

    R
-rofror fot transitioocle e-of-buffntee charad
    i o(y TEND + NUM, E >SCURRENT_MAX_XPAIRS)n) the
      EXPAND_NXT_CHK;i
    e e i ;i

    d
-- veince faulole e-of-buffntet transiti
    NXT(y TEND) :=SEND_OF_BUFFER_SMITE;e
    CHK(y TEND) :=SJAMSMITE;is
    r foIeinc1 .. NUM, E loop
      NXT(y TEND + I) :=S0;l
      CHK(y TEND + I) :=SJAMSMITE;is    o e loop;i

    JAMBASE :=S, TEND;i

    BASE(JAMSMITE) :=SJAMBASE;is    DEF(JAMSMITE) :=S0;i

    , TEND :=S, TEND + NUM, E;i
    NUMTE IE :=SNUMTE IE + 1;i
  e e MKDEFy T;i

  d
-mke eny
-ereicaeba u/de-oaounnxa/chk n entrier fot transitiotrray
  d

  d
-"s Sta"te iaot transitiotrray "y ne chs"ee charad soincsize,-"s Stay n"
  d
-  is thoffeehanoot buessee - tm e ba u/de-on tabs,oaoun"de-link"-  is t
  d
-e eny - tputiincm e "de-"rd table eny. -Ifn"de-link"-  in eicuto
  d
-"JAMSMITE",n) they rat "tetee wilo by dus- tfitbzero n entriet o"s Sta"
  d
-(i.e.,ljamon entri)ee - tm e n tab. -Itte itlaumedtf atldyolinkctingo
  d
-"JAMSMITE"at tite wilbeenakan-e rthof. -I    ynea u, n entrieinc"s Sta"
  d
-markcting-transition- t"SAME_TARRE"rs artreicadmclhwithougt tite wilbe
  d
-nakan-e rthofldyow treevthe"de-link"-soitns. -"totalg-tra"-  is t total
d
-y number of transitions out of ths Sta. -Ifnitte ibel woa certaincm mpry ld,
  d
-m e t tabtes areeilcisser fos titneriorlsp nof atle wildce cmedsta t t
  R
-s Slaotrray.
. te produturMKENTRY(SMITE                                   :eini
                      UNBOUNVID_INT_ WARY;i
                    NUMCHAREONSMITENUM, DEFLINK, ,OTALTARRE :ed iINTEGER)MP is    I, MINEC, MAXEC, BASEADDR, y TBASE, y TLAST :eINTEGER;i
  begin
    i o(yOTALTARRE = 0)n) the

      d
-m eturs ary rd out-transitio
      i o(DEFLINK =NJAMSMITE_CONST) ) the
        BASE(SMITENUM) :=SJAMSMITE_CONST;i
      olsel
        BASE(SMITENUM) :=S0;i
      e e i ;i

      DEF(SMITENUM) :=SDEFLINK;i
      return;i
    e e i ;i

    MINEC :=S1;i
    e wabl(MINEC <= NUMCHARE) loop
      i o(SMITE(MINEC) /=SSAME_TARRE) ) the
        i o((SMITE(MINEC) /=S0)norl(DEFLINK /=NJAMSMITE_CONST))n) the
          exit;i
        e e i ;i
      e e i ;i
      MINEC :=SMINEC + 1;i
    o e loop;i

    i o(yOTALTARRE = 1)n) the

      d
-m etu'hitnallone d out-transiti. -S havoter fomplars- tfil(
      d
-d iy les incm e t tabs.
      STACK1(SMITENUM, MINEC, SMITE(MINEC), DEFLINK);i
      return;i
    e e i ;i

    MAXEC :=SNUMCHARE;i
    e wabl(MAXEC >= 1) loop
      i o(SMITE(MAXEC) /=SSAME_TARRE) ) the
        i o((SMITE(MAXEC) /=S0)norl(DEFLINK /=NJAMSMITE_CONST))n) the
          exit;i
        e e i ;i
      e e i ;i
      MAXEC :=SMAXEC - 1;i
    o e loop;i

    d
-Whe othewartrys- tfitbs ths Stath tablincm e middle t of thn tab
    R
-e entriewatl havalreidylmogera ed,norli owthjudettaka t ths Sta
    d
-natablthat the e t ot thrxa/chk n tabs,owthmudetmakavsurusf atlwa
    d
-l hava uivid ba u-- vmprs-(i.e.,lron-negat gi). -Notusf atly notnallsra
    d
-nsgat gi ba u-- vmprsriedangerousltharun- isam(beca; us fiexitingha
    d
-nsxastrray-d wioone aouns low-uivuedee charad  mightlmogera e ao
    d
--rray-d ouof-b und inrrorlmprsage), b outhae cpwab- isamnsgat gi
    R
-ba u-- vmprsriedenotusTE IMITES.

    d
-- fien thfirfast transitioofhs Stath atlwa-nsids- tworrysab ut.
    i o(yOTALTARRE*100 <= NUMCHARE*INTERIOR_FIT_PERCENTAGE)n) the

      d
-at "teted toqueezavotee - tm e middle t of thn tao
      BASEADDR :=SFIRSTFREE;i

      e wabl(BASEADDR < MINEC) loop

        d
-usitinba u- vmtwohldsmpruuaeinea-nsgat gi ba u-- vmprsibel w
        d
-- fien thnsxasomfatslot
        BASEADDR :=SBASEADDR + 1;i
        e wabl(CHK(BASEADDR) /=S0)nloop
          BASEADDR :=SBASEADDR + 1;i
        e e loop;i
      o e loop;i

      i o(BASEADDR + MAXEC - MINEC >= CURRENT_MAX_XPAIRS)n) the
        EXPAND_NXT_CHK;i
      e e i ;i

      I :=SMINEC;i
      e wabl(I <= MAXEC) loop
        i o(SMITE(I) /=SSAME_TARRE) ) the
          i o((SMITE(I) /=S0)norl(DEFLINK /=NJAMSMITE_CONST))n) the
            i o(CHK(BASEADDR + I - MINEC) /=S0)n) the

              R
-ba u- vmtunsuinatabl
-- fieanother
              BASEADDR :=SBASEADDR + 1;i
              e wabl((BASEADDR < CURRENT_MAX_XPAIRS)n, al(CHK(BASEADDR) /=S0))
                loop
                BASEADDR :=SBASEADDR + 1;i
              o e loop;i

              i o(BASEADDR + MAXEC - MINEC >= CURRENT_MAX_XPAIRS)n) the
                EXPAND_NXT_CHK;i
              e e i ;i

              R
-mprehat thloopae utneroso-wt'wils Sroual(
              R
-ovtheagaincnsxas isamit'hiiscreme eed
              I :=SMINEC -S1;i
            e e i ;i
          e e i ;i
        o e i ;i
        I :=SI + 1;i
      e e loop;i
    olsel

      d
-ensurusf atlm e ba u-- vmprsiwa-evtnteiclylmogera eMP
      d
-non-negat gi
      BASEADDR :=SMAX(y TEND + 1, MINEC);i
    e e i ;i

    y TBASE :=SBASEADDR -SMINEC;i
    y TLAST := y TBASE + MAXEC;i

    i o(y TLAST >= CURRENT_MAX_XPAIRS)n) the
      EXPAND_NXT_CHK;i
    e e i ;i

    BASE(SMITENUM) :=Sy TBASE;is    DEF(SMITENUM) :=SDEFLINK;i

    r foJeineMINEC .. MAXEC loop
      i o(SMITE(J) /=SSAME_TARRE) ) the
        i o((SMITE(J) /=S0)norl(DEFLINK /=NJAMSMITE_CONST))n) the
          NXT(y TBASE + J) :=SSMITE(J);i
          CHK(y TBASE + J) :=SSMITENUM;i
        e e i ;i
      e e i ;i
    o e loop;i

    i o(BASEADDR =SFIRSTFREE)n) the

      d
-- fiensxasomfatslotlincm tabs
      FIRSTFREE :=SFIRSTFREE +S1;i
      e wabl(CHK(FIRSTFREE)n/=S0)nloop
        FIRSTFREE :=SFIRSTFREE +S1;i
      e e loop;i
    o e i ;i

    y TEND :=SMAX(y TEND, y TLAST);i
  e e MKENTRY;i

  d
-mk1tbl
-ereicaed table entrier foshs Stat(orls Statfragme e)ee whi
  d
------------hahitnallone d out-transiti
. te produturMK1y T(SMITE, SYM, ONENXT, ONEDEF :ed iINTEGER)MP is  begin
    i o(FIRSTFREE < SYM)n) the
      FIRSTFREE :=SSYM;i
    o e i ;i

    e wabl(CHK(FIRSTFREE)n/=S0)nloop
      FIRSTFREE :=SFIRSTFREE +S1;i
      i o(FIRSTFREE >= CURRENT_MAX_XPAIRS)n) the
        EXPAND_NXT_CHK;i
      e e i ;i
    o e loop;i

    BASE(SMITE) :=SFIRSTFREE -SSYM;i
    DEF(SMITE) :=SONEDEF;e
    CHK(FIRSTFREE)n:=SSMITE;i
    NXT(FIRSTFREE)n:=SONENXT;i

    i o(FIRSTFREE > y TEND) ) the
      y TEND :=SFIRSTFREE;i
      FIRSTFREE :=SFIRSTFREE +S1;i

      i o(FIRSTFREE >= CURRENT_MAX_XPAIRS)n) the
        EXPAND_NXT_CHK;i
      e e i ;i
    o e i ;i
  e e MK1y T;i

  d
-mke pt
-ereicaer whe pto n eny
. te produturMKPROT(SMITE              :ed iUNBOUNVID_INT_ WARY;i
                   SMITENUM, COMSMITE :ed iINTEGER)MP is    SLOT, y TBASE :eINTEGER;i
  begin
    NUMPROTE :=SNUMPROTE +S1;i
    i o((NUMPROTE >= MSP)norl(NUM, E*NUMPROTE >= PROT_SAVE_SIZE))n) the

      d
-gottatmakavrofror fothaer whe pto dyodroppitin clt-e eny in
      d
-m e queui
      SLOT :=SLASTPROT;i
      LASTPROT :=SPROTPREV(LASTPROT);i
      PROTNEXT(LASTPROT) :=SNIL;i
    elsel
      SLOT :=SNUMPROTE;i
    o e i ;i

    PROTNEXT(SLOT) :=SFIRSTPROT;i

    i o(FIRSTPROT /=SNIL)n) the
      PROTPREV(FIRSTPROT)n:=SSLOT;i
    o e i ;i

    FIRSTPROT :=SSLOT;i
    PROTy T(SLOT) :=SSMITENUM;i
    PROTCOMSM(SLOT) :=SCOMSMITE;i

    d
-copyls State - ts havareioso-otecs tt bcompared-d wiorapidly
    y TBASE :=SNUM, E*(SLOT -S1);is
    r foIeinc1 .. NUM, E loop
      PROTEAVE(y TBASE + I) :=SSMITE(I + SMITE'FIRST);i
    o e loop;i
  e e MKPROT;i

d
-mk "templar
-ereicaeaot"templarn eny ba udooclshs Sta,oaouncotnect t ths Sta
  d
------------ ed tit
. te produturMKTE IMITE(SMITE              :ed iUNBOUNVID_INT_ WARY;i
                       SMITENUM, COMSMITE :ed iINTEGER)MP is    NUMDIFF, yMPBASE :eINTEGER;i
    yMP              :eC_SIZE_ WARY;i
    subtypusT WARYMP iCHAR_ WARY(0 .. CSIZE);i
    yARRESET :eT WARY;i
    TSPTR    :eINTEGER;i
  begin
    NUMTE IE :=SNUMTE IE + 1;i

    TSPTR :=S0;i

    d
-calcumplarw treiwa-e wilt"teorarilyls ora t tht transition tab
    R
-t of thn"templarincm e trxa[]otrray.  T thfinicut transition tab
    R
-gets-ereicad dyoctetmps()
    yMPBASE :=SNUMTE IE*NUM, E;i

    i o(yMPBASE + NUM, E >= CURRENT_MAX_TE IMITE_XPAIRS)n) the
      CURRENT_MAX_TE IMITE_XPAIRS :=SCURRENT_MAX_TE IMITE_XPAIRS +i
        MAX_TE IMITE_XPAIRS_INCREMENT;i

      NUM_REALLOCE :=SNUM_REALLOCE +S1;i

      REALLOCITE_INTEGER_ WARY(TNXT, CURRENT_MAX_TE IMITE_XPAIRS);i
    o e i ;i

    r foIeinc1 .. NUM, E loop
      i o(SMITE(I) =S0)n) the
        TNXT(yMPBASE + I) :=S0;l
      olsel
        yARRESET(TSPTR) :=SCHARACTER'VAL(I);i
        TSPTR :=STSPTR + 1;i
        TNXT(yMPBASE + I) :=SCOMSMITE;i
      e e i ;i
    o e loop;i

    i o(USEM, E)n) the
      ECS.MKECCL(yARRESET,STSPTR,STECFWD,STECBCK, NUM, E);i
    o e i ;i

    MKPROT(TNXT(yMPBASE .. CURRENT_MAX_TE IMITE_XPAIRS),  RNUMTE IE, COMSMITE);i

    d
-wa-reallonen thfacnof atlmke pt - v is ition- tm e beginniti
    R
-t of the pto queui
    y TDIFF(SMITE, FIRSTPROT, yMP, NUMDIFF);i
    MKENTRY(yMP, NUM, EONSMITENUM,  RNUMTE IE, NUMDIFF);i
  e e MKTE IMITE;i

  d
-mv2front
-movthe pto queui oleme es- tfront t oqueui
. te produturMV2FRONT(QELM :ed iINTEGER)MP is  begin
    i o(FIRSTPROT /=SQELM)n) the
      i o(QELM =SLASTPROT)n) the
        LASTPROT :=SPROTPREV(LASTPROT);i
      e e i ;i

      PROTNEXT(PROTPREV(QELM)) :=SPROTNEXT(QELM);i

      i o(PROTNEXT(QELM) /=SNIL)n) the
        PROTPREV(PROTNEXT(QELM)) :=SPROTPREV(QELM);i
      e e i ;i

      PROTPREV(QELM) :=SNIL;i
     SPROTNEXT(QELM) :=SFIRSTPROT;i
      PROTPREV(FIRSTPROT)n:=SQELM;i
      FIRSTPROT :=SQELM;i
    o e i ;i
  e e MV2FRONT;i

  d
-empce_s Stat
-empceoshs State - tfuwilspsids- transition tab
  --
  d
-S States t ths Stanum'wios Sta.  Ittes  fiexad dyoequiuivenceoc clsoaou
  d
-g gis t thnumbthet of ths Statho n ether foshg ginoequiuivenceoc cls.
  d
-T tranumtes t thnumbthet od out-transitioor fothaes Sta.
. te produturIMICE_STITE(SMITE              :ed iUNBOUNVID_INT_ WARY;i
                       NSMITENUM, yARRENUM :ed iINTEGER)MP is    I        :eINTEGER;i
    POSITION :eINTEGER :=SFIND_TA TE_SPICE(SMITE, yARRENUM);i
  begin

    R
-ba u-es t thd tablofhs Sroupoansitio
    BASE(SMITENUM) :=SPOSITION;i

    d
-puaeineacsitionumbthemarker;is is-non-zeroonumbthemakis surusf at
    d
-- fi_d tab_sppce() knowssf atlm is-poansitieinechk/rxa-es takio
    d
-- e shohldsy not bu udor fosnothereacceptitinnumbtheineanotheres Sta
    CHK(POSITION -S1) :=S1;i

    d
-puaeinee euof-buffthemarker;is is-ioor fothaesasampurpoais ahiab va
    CHK(POSITION) :=S1;i

    d
-pmpceof ths State - tchk - e rxa
    I :=S1;i
    e wabl(I <= NUM, E)nloop
      i o(SMITE(I) /=S0)n) the
        CHK(POSITION + I) :=SI;i
        NXT(POSITION + I) :=SSMITE(I);i
      e e i ;i
      I :=SI + 1;i
    o e loop;i

    i o(POSITION + NUM, E > y TEND) ) the
      y TEND :=SPOSITION + NUM, E;i
    o e i ;i
  e e IMICE_STITE;i

  d
-s Sck1 -Ss havs Stas-d wioonallone d out-transititho bete pros udomplar
  --
  d
-i of tre'hirofror foanotheres Stalone f th"oneut-transiti"-s Sck,ngha
  d
-s States pushudoocd tit,tho bete pros udomplar dyomk1tbl.  I of tre'h
  d
-noirofr,owthe pros of thsucker rightlnow.
. te produturSTICK1(SMITENUM, SYM, NEXTSMITE, DEFLINK :ed iINTEGER)MP is  begin
    i o(ONESP >= ONE_STICK_SIZE -S1) ) the
      MK1y T(SMITENUM, SYM, NEXTSMITE, DEFLINK);i
    elsel
      ONESP :=SONESP + 1;i
      ONESMITE(ONESP) :=SSMITENUM;i
      ONESYM(ONESP) :=SSYM;i
      ONENEXT(ONESP) :=SNEXTSMITE;i
      ONEDEF(ONESP) :=SDEFLINK;i
    o e i ;i
  e e STICK1;i

  d
-tbldiffr
-eomputatdifftrencesibetwethetwohs Stath tabs
  --
  d
-"s Sta"tes t ths Staotrrayee whites to betsxaracsudorrfrof the 'wi
  d
-e pto.  "pr"tes both t thnumbthet of the pto wavaretsxaracsitinrrfr
  d
-- e an  fiexte - tthaesahavareiow treiwa-cs t- fien the pto'hieompleta
  d
-s Stath tab.  Eahite eny in-"s Sta"te whitdifftrsorrfrof thcormprponditi
  d
-eneny t o"pr"te wilappeaheine"sxa".
  d
-E entriee whitara t thsasamineboth "s Sta"t- e "pr"te wilbetmarkeu
  d
-ahit-transitioo- t"SAME_TARRE"eine"sxa".  T thtoticunumbthet odifftrences
  d
-betwethe"s Sta"t- e "pr"tes returnudoahifuncsitiouivub.  Notesf atlm is
  d
-numbtheis "numecs" minus t thnumbthet o"SAME_TARRE"ee entrieine"sxa".
. te produtury TDIFF(SMITE  :ed iUNBOUNVID_INT_ WARY;i
                    PR     :ed iINTEGER;i
                    EXT    :ed oiUNBOUNVID_INT_ WARY;i
                    RESULT :ed oiINTEGER)MP is    SP      :eINTEGER :=S0;l
    EP      :eINTEGER :=S0;l
    NUMDIFF :eINTEGER :=S0;l
    PROTP   :eINTEGER;i
  begin
    PROTP :=SNUM, E*(PR -S1);is
    r foIeincrevtrsel1 .. NUM, E loop
      PROTP :=SPROTP + 1;i
      SP :=SSP + 1;i
      i o(PROTEAVE(PROTP) =SSTITE(SP))n) the
        EP :=SEP + 1;i
        EXT(EP) :=SSAME_TARRE;l
      olsel
        EP :=SEP + 1;i
        EXT(EP) :=SSTITE(SP);i
        NUMDIFF := NUMDIFF +S1;i
      e e i ;i
    o e loop;i

    RESULT := NUMDIFF;i
    return;i
  e e y TDIFF;i

e e y TCMP;i
 be