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r35/src/gentran.red
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— Some historical releases purely for archival purposes
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module gentran; % Header module for gentran package. % Author: Barbara L. Gates. % Modifications by: Michael C. Dewar. create!-package('(gentran utils intrfc templt pre gparser redlsp segmnt lspfor lsprat lspc lsppasc goutput), '(contrib gentran)); symbolic smacro procedure smallfloatp u; % Returns true if <structure> is a small rounded. atom u; endmodule; module util; %% GENTRAN Utility Functions %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Points: ALL FUNCTIONS symbolic$ % User-Accessible Primitive Function % operator genstmtnum$ % User-Accessible Global Variables % global '(genstmtincr!* genstmtnum!* tablen!*)$ share genstmtincr!*, genstmtnum!*, tablen!*$ genstmtincr!* := 1$ genstmtnum!* := 25000$ tablen!* := 4$ % GENTRAN Global Variables % global '(!*lisparithexpops!* !*lispdefops!* !*lisplogexpops!* !*lispstmtgpops!* !*lispstmtops!* !*symboltable!*)$ !*lisparithexpops!* := '(expt minus plus quotient times)$ %LISP arithmetic expression operators !*lispdefops!* := '(defun)$ %LISP function definition operator !*lisplogexpops!* := '(and equal geq greaterp leq lessp neq not or)$ %LISP logical & relational exp operators !*lispstmtgpops!* := '(prog progn)$ %LISP statement group operators !*lispstmtops!* := '(break cond end for go read repeat return setq stop while write)$ %LISP statement operators !*symboltable!* := '(!*main!*)$ %symbol table global '(!*for!*)$ %% %% %% Statement Number Generation Function %% %% %% procedure genstmtnum; genstmtnum!* := genstmtnum!* + genstmtincr!*$ %% %% %% Symbol Table Insertion, Retrieval & Deletion Functions %% %% %% procedure symtabput(name, type, value); % % % CALL INSERTS % % SymTabPut(subprogname, NIL, NIL ) subprogram name % % SymTabPut(subprogname, '!*Type!*, subprogtype ) subprogram type % % SymTabPut(subprogname, '!*Params!*, paramlist ) parameter list % % SymTabPut(subprogname, vname, '(type d1 d2 ...)) type & dimensions % % for variable, % % variable range, % % if subprogname=NIL parameter, or % % then subprogname <-- Car symboltable function name % % % << name := name or car !*symboltable!*; !*symboltable!* := name . delete(name, !*symboltable!*); if type memq '(!*type!* !*params!*) then put(name, type, value) else if type then begin scalar v, vtype, vdims, dec, decs; v := type; vtype := car value; vdims := cdr value; decs := get(name, '!*decs!*); dec := assoc(v, decs); decs := delete(dec, decs); vtype := vtype or (if length dec > 1 then cadr dec); vdims := vdims or (if length dec > 2 then cddr dec); dec := v . vtype . vdims; put(name, '!*decs!*, append(decs, list dec)) end >>$ procedure symtabget(name, type); % % % CALL RETRIEVES % % SymTabGet(NIL, NIL ) all subprogram names % % SymTabGet(subprogname, '!*Type!* ) subprogram type % % SymTabGet(subprogname, '!*Params!*) parameter list % % SymTabGet(subprogname, vname ) type & dimensions for variable, % % variable range, parameter, or % % function name % % SymTabGet(subprogname, '!*Decs!* ) all types & dimensions % % % % if subprogname=NIL & 2nd arg is non-NIL % % then subprogname <-- Car symboltable % % % << if type then name := name or car !*symboltable!*; if null name then !*symboltable!* else if type memq '(!*type!* !*params!* !*decs!*) then get(name, type) else assoc(type, get(name, '!*decs!*)) >>$ symbolic procedure declared!-as!-float u; begin scalar decs; return (decs := symtabget(nil,u)) and memq(cadr decs, '(real real!*8 real!*16 double! precision double float) )$ end$ procedure symtabrem(name, type); % % % CALL DELETES % % SymTabRem(subprogname, NIL ) subprogram name % % SymTabRem(subprogname, '!*Type!* ) subprogram type % % SymTabRem(subprogname, '!*Params!*) parameter list % % SymTabRem(subprogname, vname ) type & dimensions for variable, % % variable range, parameter, or % % function name % % SymTabRem(subprogname, '!*Decs!* ) all types & dimensions % % % % if subprogname=NIL % % then subprogname <-- Car symboltable % % % << name := name or car !*symboltable!*; if null type then !*symboltable!* := delete(name, !*symboltable!*) or '(!*main!*) else if type memq '(!*type!* !*params!* !*decs!*) then remprop(name, type) else begin scalar v, dec, decs; v := type; decs := get(name, '!*decs!*); dec := assoc(v, decs); decs := delete(dec, decs); put(name, '!*decs!*, decs) end >>$ procedure getvartype var; begin scalar type; if pairp var then var := car var; type := symtabget(nil, var); if type and length type >= 2 then type := cadr type else type := nil; return type end$ procedure arrayeltp exp; length symtabget(nil, car exp) > 2$ %% %% %% Functions for Making LISP Forms %% %% %% procedure mkassign(var, exp); list('setq, var, exp)$ procedure mkcond pairs; 'cond . pairs$ procedure mkdef(name, params, body); append(list('defun, name, params), body)$ procedure mkreturn exp; list('return, exp)$ procedure mkstmtgp(vars, stmts); if numberp vars then 'progn . stmts else 'prog . vars . stmts$ %% LISP Form Predicates %% procedure lispassignp stmt; eqcar(stmt,'setq)$ procedure lispbreakp form; eqcar(form, 'break)$ procedure lispcallp form; pairp form$ procedure lispcondp stmt; eqcar(stmt, 'cond)$ procedure lispdefp form; pairp form and car form memq !*lispdefops!*$ procedure lispexpp form; atom form or car form memq !*lisparithexpops!* or car form memq !*lisplogexpops!* or not (car form memq !*lispstmtops!*) and not (car form memq !*lispstmtgpops!*) and not (car form memq !*lispdefops!*)$ procedure lispendp form; eqcar( form, 'end)$ procedure lispforp form; eqcar( form, !*for!*)$ procedure lispgop form; eqcar( form, 'go)$ procedure lisplabelp form; atom form$ procedure lispprintp form; eqcar( form, 'write)$ procedure lispreadp form; eqcar( form, 'read)$ procedure lisprepeatp form; eqcar(form, 'repeat)$ procedure lispreturnp stmt; eqcar( stmt, 'return)$ procedure lispstmtp form; atom form or car form memq !*lispstmtops!* or ( atom car form and not (car form memq !*lisparithexpops!* or car form memq !*lisplogexpops!* or car form memq !*lispstmtgpops!* or car form memq !*lispdefops!*) )$ procedure lispstmtgpp form; pairp form and car form memq !*lispstmtgpops!*$ procedure lispstopp form; eqcar(form, 'stop)$ procedure lispwhilep form; eqcar(form, 'while)$ %% %% %% Type Predicates & Type List Forming Functions %% %% %% procedure formtypelists varlists; % ( (var TYPE d1 d2...) ( (TYPE (var d1 d2...) ...) % % : ==> : % % (var TYPE d1 d2...) ) (TYPE (var d1 d2...) ...) ) % begin scalar type, typelists, tl; for each vl in varlists do << type := cadr vl; if onep length(vl := delete(type, vl)) then vl := car vl; if (tl := assoc(type, typelists)) then typelists := delete(tl, typelists) else tl := list type; typelists := append(typelists, list append(tl, list vl)) >>; return typelists end$ procedure functionformp(stmt, name); % Does stmt contain an assignment which assigns a value to name? % % Does it contain a RETURN exp; stmt? % % (i.e., (SETQ name exp) -or- (RETURN exp) % if null stmt or atom stmt then nil else if car stmt eq 'setq and cadr stmt eq name then t else if car stmt eq 'return and cdr stmt then t else lispeval('or . for each st in stmt collect functionformp(st, name))$ procedure implicitp type; begin scalar xtype, ximp, r; xtype := explode2 type; ximp := explode2 'implicit; r := t; repeat r := r and (car xtype eq car ximp) until null(xtype := cdr xtype) or null(ximp := cdr ximp); return r end$ %% %% %% Misc. Functions %% %% %% procedure insertcommas lst; begin scalar result; if null lst then return nil; result := list car lst; while lst := cdr lst do result := car lst . '!, . result; return reverse result end$ procedure insertparens exp; '!( . append(exp, list '!))$ procedure optype op; get(op, '!*optype!*)$ put('minus, '!*optype!*, 'unary )$ put('not, '!*optype!*, 'unary )$ put('quotient, '!*optype!*, 'binary)$ put('expt, '!*optype!*, 'binary)$ put('equal, '!*optype!*, 'binary)$ put('neq, '!*optype!*, 'binary)$ put('greaterp, '!*optype!*, 'binary)$ put('geq, '!*optype!*, 'binary)$ put('lessp, '!*optype!*, 'binary)$ put('leq, '!*optype!*, 'binary)$ put('plus, '!*optype!*, 'nary )$ put('times, '!*optype!*, 'nary )$ put('and, '!*optype!*, 'nary )$ put('or, '!*optype!*, 'nary )$ procedure seqtogp lst; if null lst or atom lst or lispstmtp lst or lispstmtgpp lst then lst else if onep length lst and pairp car lst then seqtogp car lst else mkstmtgp(nil, for each st in lst collect seqtogp st)$ procedure stringtoatom a; intern compress foreach c in append('!" . explode2 a, list '!") conc list('!!, c)$ procedure stripquotes a; if atom a then intern compress for each c in explode2 a conc list('!!, c) else if car a eq 'quote then stripquotes cadr a else a$ symbolic procedure flushspaces c; << while seprp c do << if c eq !$eol!$ then pterpri() else pprin2 c; c := readch() >>; c >>; symbolic procedure flushspacescommas c; << while seprp c or c eq '!, do << if c eq !$eol!$ then pterpri() else pprin2 c; c := readch() >>; c >>; endmodule; module intrfc; %% GENTRAN Parsing Routines & Control Functions %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Points: % DeclareStat, GENDECS, GenInStat (GentranIn), GenOutStat % (GentranOutPush), GenPopStat (GentranPop), GenPushStat, GenShutStat % (GentranShut), GenStat (Gentran), (GENTRANPAIRS), % LiteralStat, SYM!-GENTRAN, SYM!-GENTRANIN, SYM!-GENTRANOUT, % SYM!-GENTRANSHUT, % SYM!-GENTRANPUSH, SYM!-GENTRANPOP fluid '(!*getdecs); % GENTRAN Commands % put('gentran, 'stat, 'genstat )$ put('gentranin, 'stat, 'geninstat )$ put('gentranout, 'stat, 'genoutstat )$ put('gentranshut, 'stat, 'genshutstat)$ put('gentranpush, 'stat, 'genpushstat)$ put('gentranpop, 'stat, 'genpopstat )$ % Form Analysis Function % put('gentran, 'formfn, 'formgentran)$ put('gentranin, 'formfn, 'formgentran)$ put('gentranoutpush, 'formfn, 'formgentran)$ put('gentranshut, 'formfn, 'formgentran)$ put('gentranpop, 'formfn, 'formgentran)$ % GENTRAN Functions % put('declare, 'stat, 'declarestat)$ put('literal, 'stat, 'literalstat)$ % GENTRAN Operators % newtok '((!: !: !=) lsetq )$ infix ::= $ newtok '((!: != !:) rsetq )$ infix :=: $ newtok '((!: !: != !:) lrsetq)$ infix ::=:$ % User-Accessible Primitive Function % operator gendecs$ % GENTRAN Mode Switches % fluid '(!*gendecs)$ !*gendecs := t$ put('gendecs, 'simpfg, '((nil) (t (gendecs nil))))$ switch gendecs$ %See procedure gendecs: fluid '(!*keepdecs)$ !*keepdecs := nil$ switch keepdecs$ % GENTRAN Flags % fluid '(!*gentranopt !*gentranseg !*period); !*gentranseg := t$ switch gentranseg$ % User-Accessible Global Variable % global '(gentranlang!*)$ share gentranlang!*$ gentranlang!* := 'fortran$ % GENTRAN Global Variable % global '(!*term!* !*stdin!* !*stdout!* !*instk!* !*currin!* !*outstk!* !*currout!* !*outchanl!*)$ !*term!* := (t . nil)$ %terminal filepair !*stdin!* := !*term!*$ %standard input filepair !*stdout!* := !*term!*$ %standard output filepair !*instk!* := list !*stdin!*$ %template file stack !*currin!* := car !*instk!*$ %current input filepair !*outstk!* := list !*stdout!*$ %output file stack !*currout!* := car !*outstk!*$ %current output filepair !*outchanl!* := list cdr !*currout!*$ %current output channel list global '(!*do!* !*for!*)$ off quotenewnam$ !*do!* := 'do$ !*for!* := 'for$ on quotenewnam$ % REDUCE Variables % global '(cursym!* !*vars!*)$ fluid '(!*mode)$ %% %% %% PARSING ROUTINES %% %% %% %% GENTRAN Command Parsers %% procedure genstat; % % % GENTRAN % % stmt % % [OUT f1,f2,...,fn]; % % % begin scalar stmt; flag('(out), 'delim); stmt := xread t; remflag('(out), 'delim); if cursym!* eq 'out then return list('gentran, stmt, readfargs()) else if endofstmtp() then return list('gentran, stmt, nil) else gentranerr('e, nil, "INVALID SYNTAX", nil) end$ procedure geninstat; % % % GENTRANIN % % f1,f2,...,fm % % [OUT f1,f2,...,fn]; % % % begin scalar f1, f2; flag('(out), 'delim); f1 := xread nil; if atom f1 then f1 := list f1 else f1 := cdr f1; remflag('(out), 'delim); if cursym!* eq 'out then f2 := readfargs(); return list('gentranin, f1, f2) end$ procedure genoutstat; % % % GENTRANOUT f1,f2,...,fn; % % % list('gentranoutpush, readfargs())$ procedure genshutstat; % % % GENTRANSHUT f1,f2,...,fn; % % % list('gentranshut, readfargs())$ procedure genpushstat; % % % GENTRANPUSH f1,f2,...,fn; % % % list('gentranoutpush, readfargs())$ procedure genpopstat; % % % GENTRANPOP f1,f2,...,fn; % % % list('gentranpop, readfargs())$ %% GENTRAN Function Parsers %% newtok '((!: !:) range); % Used for declarations with lower and upper bounds; procedure declarestat; % % % DECLARE v1,v2,...,vn : type; % % % % DECLARE % % << % % v1,v2,...,vn1 : type1; % % v1,v2,...,vn2 : type2; % % . % % . % % v1,v2,...,vnn : typen % % >>; % % % begin scalar res, varlst, type; scan(); put('range,'infix,4); put('range,'op,'((4 4))); if cursym!* eq '!*lsqbkt!* then << scan(); while cursym!* neq '!*rsqbkt!* do << varlst := list xread1 'for; while cursym!* neq '!*colon!* do varlst := append(varlst, list xread 'for); type := declarestat1(); res := append(res, list(type . varlst)); if cursym!* eq '!*semicol!* then scan() >>; scan() >> else << varlst := list xread1 'for; while cursym!* neq '!*colon!* do varlst := append(varlst, list xread 'for); type := declarestat1(); res := list (type . varlst); >>; if not endofstmtp() then gentranerr('e, nil, "INVALID SYNTAX", nil); remprop('range,'infix); remprop('range,'op); return ('declare . res) end$ procedure declarestat1; begin scalar res; scan(); if endofstmtp() then return nil; if cursym!* eq 'implicit then << scan(); res := intern compress append(explode 'implicit! , explode cursym!*) >> else res := cursym!*; scan(); if cursym!* eq 'times then << scan(); if numberp cursym!* then << res := intern compress append(append(explode res, explode '!*), explode cursym!*); scan() >> else gentranerr('e, nil, "INVALID SYNTAX", nil) >>; return res end$ procedure literalstat; % % % LITERAL arg1,arg2,...,argn; % % % begin scalar res; repeat res := append(res, list xread t) until endofstmtp(); if atom res then return list('literal, res) else if car res eq '!*comma!* then return rplaca(res, 'literal) else return('literal . res) end$ %% %% %% Symbolic Mode Functions %% %% %% procedure sym!-gentran form; lispeval formgentran(list('gentran, form, nil), !*vars!*, !*mode)$ procedure sym!-gentranin flist; if flist then lispeval formgentran(list('gentranin, (if atom flist then list flist else flist), nil), !*vars!*, !*mode)$ procedure sym!-gentranout flist; lispeval formgentran(list('gentranoutpush, if atom flist then list flist else flist), !*vars!*, !*mode)$ procedure sym!-gentranshut flist; lispeval formgentran(list('gentranshut, if atom flist then list flist else flist), !*vars!*, !*mode)$ procedure sym!-gentranpush flist; lispeval formgentran(list('gentranoutpush, if atom flist then list flist else flist), !*vars!*, !*mode)$ procedure sym!-gentranpop flist; lispeval formgentran(list('gentranpop, if atom flist then list flist else flist), !*vars!*, !*mode)$ %% %% %% Form Analysis Functions %% %% %% procedure formgentran(u, vars, mode); (car u) . foreach arg in cdr u collect formgentran1(arg, vars, mode)$ symbolic procedure formgentran1(u, vars, mode); if pairp u and car u eq '!:dn!: then mkquote <<precmsg length explode abs car(u := cdr u); decimal2internal(car u,cdr u)>> else if pairp u and car u eq '!:rd!: then mkquote u else if pairp u and not listp u then if !*getdecs then formgentran1(list ('declare,list(cdr u,car u)),vars,mode) % Amended mcd 13/11/87 to allow local definitions. else gentranerr('e,u, "Scalar definitions cannot be translated",nil) else if atom u then mkquote u else if car u eq 'eval then if mode eq 'algebraic then list('aeval, form1(cadr u, vars, mode)) else form1(cadr u, vars, mode) else if car u memq '(lsetq rsetq lrsetq) then % (LSETQ (var s1 s2 ... sn) exp) % % -> (SETQ (var (EVAL s1) (EVAL s2) ... (EVAL sn)) exp) % % (RSETQ var exp) % % -> (SETQ var (EVAL exp)) % % (LRSETQ (var s1 s2 ... sn) exp) % % -> (SETQ (var (EVAL s1) (EVAL s2) ... (EVAL sn)) (EVAL exp)) % begin scalar op, lhs, rhs; op := car u; lhs := cadr u; rhs := caddr u; if op memq '(lsetq lrsetq) and listp lhs then lhs := car lhs . foreach s in cdr lhs collect list('eval, s); if op memq '(rsetq lrsetq) then rhs := list('eval, rhs); return formgentran1(list('setq, lhs, rhs), vars, mode) end else 'list . foreach elt in u collect formgentran1(elt, vars, mode)$ %% %% %% Control Functions %% %% %% %% Command Control Functions %% symbolic procedure gentran(forms, flist); begin if flist then lispeval list('gentranoutpush, list('quote, flist)); forms := preproc list forms; gentranparse forms; forms := lispcode forms; if !*gentranopt then forms := opt forms; if !*gentranseg then forms := seg forms; apply1(get(gentranlang!*,'formatter) or get('fortran,'formatter), apply1(get(gentranlang!*,'codegen) or get('fortran,'codegen), forms)); %if gentranlang!* eq 'ratfor then % formatrat ratcode forms %else if gentranlang!* eq 'c then % formatc ccode forms %else % formatfort fortcode forms; if flist then << flist := car !*currout!* or ('list . cdr !*currout!*); lispeval '(gentranpop '(nil)); return flist >> else return car !*currout!* or ('list . cdr !*currout!*) end$ procedure gentranin(inlist, outlist); begin scalar ich; foreach f in inlist do if pairp f then gentranerr('e, f, "Wrong Type of Arg", nil) else if not !*filep!* f and f neq car !*stdin!* then gentranerr('e, f, "Nonexistent Input File", nil); if outlist then lispeval list('gentranoutpush, mkquote outlist); ich := rds nil; foreach f in inlist do << if f = car !*stdin!* then pushinputstack !*stdin!* else if retrieveinputfilepair f then gentranerr('e, f, "Template File Already Open for Input", nil) else pushinputstack makeinputfilepair f; rds cdr !*currin!*; lispapply(get(gentranlang!*,'proctem) or get('fortran,'proctem), nil); % if gentranlang!* eq 'ratfor then % procrattem() % else if gentranlang!* eq 'c then % procctem() % else % procforttem(); rds ich; popinputstack() >>; if outlist then << outlist := car !*currout!* or ('list . cdr !*currout!*); lispeval '(gentranpop '(nil)); return outlist >> else return car !*currout!* or ('list . cdr !*currout!*) end$ procedure gentranoutpush flist; << if onep length (flist := fargstonames(flist, t)) then flist := car flist; pushoutputstack (retrieveoutputfilepair flist or makeoutputfilepair flist); car !*currout!* or ('list . cdr !*currout!*) >>$ procedure gentranshut flist; % close, delete, [output to T] % begin scalar trm; flist := fargstonames(flist, nil); trm := if onep length flist then (car flist = car !*currout!*) else if car !*currout!* then (if car !*currout!* member flist then t) else lispeval('and . foreach f in cdr !*currout!* collect (if f member flist then t)); deletefromoutputstack flist; if trm and !*currout!* neq !*stdout!* then pushoutputstack !*stdout!*; return car !*currout!* or ('list . cdr !*currout!*) end$ procedure gentranpop flist; << if 'all!* member flist then while !*outstk!* neq list !*stdout!* do lispeval '(gentranpop '(nil)) else << flist := fargstonames(flist,nil); if onep length flist then flist := car flist; popoutputstack flist >>; car !*currout!* or ('list . cdr !*currout!*) >>$ %% Mode Switch Control Function %% procedure gendecs name; % Hacked 15/11/88 to make it actually tidy up symbol table properly. % KEEPDECS also added. mcd. %%%%%%%%%%%%%%%%%%%%%%%% % % % ON/OFF GENDECS; % % % % GENDECS subprogname; % % % %%%%%%%%%%%%%%%%%%%%%%%% << if name equal 0 then name := nil; apply1(get(gentranlang!*,'formatter) or get('fortran,'formatter), apply1(get(gentranlang!*,'gendecs) or get('fortran,'gendecs), symtabget(name, '!*decs!*))); % if gentranlang!* eq 'ratfor then % formatrat ratdecs symtabget(name, '!*decs!*) % else if gentranlang!* eq 'c then % formatc cdecs symtabget(name, '!*decs!*) % else % formatfort fortdecs symtabget(name, '!*decs!*); % Sometimes it would be handy to know just what we've generated. % If the switch KEEPDECS is on (usually off) this is done. if null !*keepdecs then << symtabrem(name, '!*decs!*); symtabrem(name, '!*type!*); >>; symtabrem(name, nil); >>$ %% Misc. Control Functions %% procedure gentranpairs prs; % % % GENTRANPAIRS dottedpairlist; % % % begin scalar formatfn,assignfn; formatfn:=get(gentranlang!*,'formatter) or get('fortran,'formatter); assignfn:=get(gentranlang!*,'assigner) or get('fortran,'assigner); return for each pr in prs do apply1(formatfn,apply2(assignfn,lispcodeexp(car pr, !*period), lispcodeexp(cdr pr, !*period))) end; %procedure gentranpairs prs; %% % %% GENTRANPAIRS dottedpairlist; % %% % %if gentranlang!* eq 'ratfor then % for each pr in prs do % formatrat mkfratassign(lispcodeexp(car pr, !*period), % lispcodeexp(cdr pr, !*period)) %else if gentranlang!* eq 'c then % for each pr in prs do % formatc mkfcassign(lispcodeexp(car pr, !*period), % lispcodeexp(cdr pr, !*period)) %else % for each pr in prs do % formatfort mkffortassign(lispcodeexp(car pr, !*period), % lispcodeexp(cdr pr, !*period))$ %% %% %% Input & Output File Stack Manipulation Functions %% %% %% %% Input Stack Manipulation Functions %% procedure makeinputfilepair fname; (fname . open(mkfil fname, 'input))$ procedure retrieveinputfilepair fname; retrievefilepair(fname, !*instk!*)$ procedure pushinputstack pr; << !*instk!* := pr . !*instk!*; !*currin!* := car !*instk!*; !*instk!* >>$ procedure popinputstack; begin scalar x; x := !*currin!*; if cdr !*currin!* then close cdr !*currin!*; !*instk!* := cdr !*instk!* or list !*stdin!*; !*currin!* := car !*instk!*; return x end$ %% Output File Stack Manipulation Functions %% procedure makeoutputfilepair f; if atom f then (f . open(mkfil f, 'output)) else aconc((nil . f) . foreach fn in f conc if not retrieveoutputfilepair fn then list makeoutputfilepair fn, (nil . nil))$ procedure retrieveoutputfilepair f; if atom f then retrievefilepair(f, !*outstk!*) else retrievepfilepair(f, !*outstk!*)$ procedure pushoutputstack pr; << !*outstk!* := if atom cdr pr then (pr . !*outstk!*) else append(pr, !*outstk!*); !*currout!* := car !*outstk!*; !*outchanl!* := if car !*currout!* then list cdr !*currout!* else foreach f in cdr !*currout!* collect cdr retrieveoutputfilepair f; !*outstk!* >>$ procedure popoutputstack f; % [close], remove top-most exact occurrence, reset vars % begin scalar pr, s; if atom f then << pr := retrieveoutputfilepair f; while !*outstk!* and car !*outstk!* neq pr do if caar !*outstk!* then <<s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!*>> else << while car !*outstk!* neq (nil . nil) do << s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >>; s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >>; if !*outstk!* then s := append(s, cdr !*outstk!*); !*outstk!* := s; if not retrieveoutputfilepair f then close cdr pr >> else << pr := foreach fn in f collect retrieveoutputfilepair fn; while !*outstk!* and not filelistequivp(cdar !*outstk!*, f) do if caar !*outstk!* then << s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >> else << while car !*outstk!* neq (nil . nil) do << s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >>; s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >>; if !*outstk!* then << while car !*outstk!* neq (nil . nil) do !*outstk!* := cdr !*outstk!*; s := append(s, cdr !*outstk!*) >>; !*outstk!* := s; foreach fn in f do pr := delete(retrieveoutputfilepair fn, pr); foreach p in pr do close cdr p >>; !*outstk!* := !*outstk!* or list !*stdout!*; !*currout!* := car !*outstk!*; !*outchanl!* := if car !*currout!* then list cdr !*currout!* else foreach fn in cdr !*currout!* collect cdr retrieveoutputfilepair fn; return f end$ procedure deletefromoutputstack f; begin scalar s, pr; if atom f then << pr := retrieveoutputfilepair f; while retrieveoutputfilepair f do !*outstk!* := delete(pr, !*outstk!*); close cdr pr; foreach pr in !*outstk!* do if listp cdr pr and pairp cdr pr and f member cdr pr then rplacd(pr, delete(f, cdr pr)) % Fixed 26-2-88 mcd >> else << foreach fn in f do deletefromoutputstack fn; foreach fn in f do foreach pr in !*outstk!* do if pairp cdr pr and fn member cdr pr then rplacd(pr, delete(fn, cdr pr)) >>; while !*outstk!* do if caar !*outstk!* and caar !*outstk!* neq 't then << s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >> else if cdar !*outstk!* and cdar !*outstk!* neq '(t) then << while car !*outstk!* neq (nil . nil) do << s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >>; s := aconc(s, car !*outstk!*); !*outstk!* := cdr !*outstk!* >> else if cdr !*outstk!* then !*outstk!* := cddr !*outstk!* else !*outstk!*:=nil; !*outstk!* := s or list !*stdout!*; !*currout!* := car !*outstk!*; !*outchanl!* := if car !*currout!* then list cdr !*currout!* else foreach fn in cdr !*currout!* collect cdr retrieveoutputfilepair fn; return f end$ procedure retrievefilepair(fname, stk); if null stk then nil else if caar stk and mkfil fname = mkfil caar stk then car stk else retrievefilepair(fname, cdr stk)$ procedure retrievepfilepair(f, stk); if null stk then nil else if null caar stk and filelistequivp(f, cdar stk) then list(car stk, (nil . nil)) else retrievepfilepair(f, cdr stk)$ procedure filelistequivp(f1, f2); if pairp f1 and pairp f2 then << f1 := foreach f in f1 collect mkfil f; f2 := foreach f in f2 collect mkfil f; while (car f1 member f2) do << f2 := delete(car f1, f2); f1 := cdr f1 >>; null f1 and null f2 >>$ %% procedure !*filep!* f; not errorp errorset(list('close, list('open,list('mkfil,mkquote f),''input)), nil,nil)$ %% %% %% Scanning & Arg-Conversion Functions %% %% %% procedure endofstmtp; if cursym!* member '(!*semicol!* !*rsqbkt!* end) then t$ procedure fargstonames(fargs, openp); begin scalar names; fargs := for each a in fargs conc if a memq '(nil 0) then if car !*currout!* then list car !*currout!* else cdr !*currout!* else if a eq 't then list car !*stdout!* else if a eq 'all!* then for each fp in !*outstk!* conc (if car fp and not(fp equal !*stdout!*) then list car fp) else if atom a then if openp then << if null getd 'bpsmove and % That essentially disables the test on IBM SLISP % where it causes chaos with the PDS management. !*filep!* a and null assoc(a, !*outstk!*) then gentranerr('w, a, "OUTPUT FILE ALREADY EXISTS", "CONTINUE?"); list a >> else if retrieveoutputfilepair a then list a else gentranerr('w, a, "File not Open for Output", nil) else gentranerr('e, a, "WRONG TYPE OF ARG", nil); repeat if not (car fargs member names) then names := append(names, list car fargs) until null (fargs := cdr fargs); return names end$ procedure readfargs; begin scalar f; while not endofstmtp() do f := append(f, list xread t); return f or list nil end$ endmodule; module templt; %% GENTRAN Template Processing Routines %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Points: ProcCTem, ProcFortTem, ProcRatTem % Moved to separate language modules - JHD December 1987 symbolic$ % User-Accessible Global Variables % global '(gentranlang!* !$!#)$ fluid '(!*gendecs)$ share gentranlang!*, !$!#$ gentranlang!* := 'fortran$ !$!# := 0$ switch gendecs$ global '(!*space!* !*stdout!* !$eof!$ !$eol!$)$ % GENTRAN Global Variables % !*space!* := '! $ fluid '(!*mode)$ %% %% %% Text Processing Routines %% %% %% %% %% %% Template File Active Part Handler %% %% %% procedure procactive; % active parts: ;BEGIN; ... ;END; % % eof markers: ;END; % begin scalar c, buf, mode, och, !*int; % By turning INT off we avoid some excess blank lines, and avoid trouble % with END being caught by BEGIN1. c := readch(); if c eq 'e then if (c := readch()) eq 'n then if (c := readch()) eq 'd then if (c := readch()) eq '!; then return !$eof!$ else buf := '!;end else buf := '!;en else buf := '!;e else if c eq 'b then if (c := readch()) eq 'e then if (c := readch()) eq 'g then if (c := readch()) eq 'i then if (c := readch()) eq 'n then if (c := readch()) eq '!; then << mode := !*mode; !*mode := 'algebraic; och := wrs cdr !*stdout!*; begin1(); wrs och; !*mode := mode; linelength 150; return if (c := readch()) eq !$eol!$ then readch() else c >> else buf := '!;begin else buf := '!;begi else buf := '!;beg else buf := '!;be else buf := '!;b else buf := '!;; pprin2 buf; return c end$ endmodule; module pre; %% GENTRAN Preprocessing Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Point: Preproc symbolic$ procedure preproc exp; begin scalar r; r := preproc1 exp; if r then return car r else return r end$ % This switch causes gentran to attempt to automatically generate type % declarations, without use of the 'declare' statement. mcd 12/11/87. fluid '(!*getdecs)$ !*getdecs := nil$ switch getdecs$ % This global variable is the default type given when 'getdecs' is on: global '(deftype!*)$ share deftype!*$ deftype!* := 'real$ symbolic procedure bfloat x; if floatp x then fl2bf x else normbf(if atom x then read!:num x else x); symbolic procedure preproc1 exp; % Amended mcd 12/11/87,13/11/87,14/10/91. if atom exp then list exp else if car exp = '!:rd!: then list if smallfloatp cdr exp then bfloat cdr exp else exp else if car exp = '!:dn!: then preproc1 decimal2internal(cadr exp,cddr exp) else if car exp eq '!*sq then % (!*SQ dpexp) --> (PREPSQ dpexp) % preproc1 prepsq cadr exp else if car exp eq 'procedure then << % Store subprogram name & parameters in symbol table % symtabput(cadr exp, '!*params!*, car cddddr exp); % Store subprogram type and parameters types in symbol table % if !*getdecs switch is on. Use default type unless % procedure is declared as either: % INTEGER PROCEDURE ... or REAL PROCEDURE ... if !*getdecs then if caddr exp memq '(real integer) then << symtabput(cadr exp,cadr exp,list caddr exp); for each v in car cddddr exp do symtabput(cadr exp,v,list caddr exp); list nconc(list ('procedure,cadr exp,'nil), for each e in cdddr exp conc preproc1 e) >> else << for each v in car cddddr exp do symtabput(cadr exp,v,list deftype!*); list for each e in exp conc preproc1 e >> else list for each e in exp conc preproc1 e >> else if car exp eq 'declare then << % Store type declarations in symbol table % exp := car preproc1 cdr exp; exp := preprocdec exp; for each dec in exp do for each var in cdr dec do if car dec memq '(subroutine function) then symtabput(var, '!*type!*, car dec) else symtabput(nil, if atom var then var else car var, if atom var then list car dec else (car dec . cdr var)); nil >> else if car exp eq 'setq and listp caddr exp and memq(caaddr exp,'(cond progn) ) then migrate!-setqs exp else if memq(car exp, '(plus times difference quotient minus) ) then begin scalar simp_exp; return if pairp numr (simp_exp:=simp!* exp) and memq(car numr simp_exp,'(!:cr!: !:crn!: !:gi!:)) then if onep denr simp_exp then list numr simp_exp else list list('quotient,numr simp_exp, car preproc1 prepsq !*f2q denr simp_exp) else list for each e in exp conc preproc1 e; end else << % The next statement stores the index of a for loop in the symbol % table, assigning them the type integer, % if the switch 'getdecs' is on. if !*getdecs and (car exp memq '(!~for for)) then symtabput(nil,cadr exp, '(integer)); list for each e in exp conc preproc1 e >>$ symbolic procedure preprocdec arg; % (TIMES type int) --> type!*int % % (IMPLICIT type) --> IMPLICIT! type % % (DIFFERENCE v1 v2) --> v1!-v2 % if atom arg then arg else if car arg eq 'times then if equal(length arg,3) and fixp(caddr arg) then intern compress append( append( explode cadr arg, explode '!* ), explode caddr arg ) else begin scalar result; for i:=1:length(arg) do result := append(result, if equal(nth(arg,i),'times) then '(!*) else explode nth(arg,i)); return intern compress result; end else if car arg eq 'implicit then intern compress append( explode 'implicit! , explode preprocdec cadr arg ) else if car arg eq 'difference then intern compress append( append( explode cadr arg, explode '!- ), explode caddr arg ) else for each a in arg collect preprocdec a$ symbolic procedure migrate!-setqs exp; % Move setq's within a progn or cond so that we can translate things % like gentran x := if ... then ... list migrate!-setqs1(cadr exp,caddr exp)$ symbolic procedure migrate!-setqs1(var,exp); if atom exp then list('setq,var,exp) else if eqcar(exp,'cond) then ('cond . for each u in cdr exp collect list (car u,migrate!-setqs1(var,cadr u)) ) else if eqcar(exp,'progn) then reverse rplaca(exp := reverse exp,migrate!-setqs1(var,car exp)) else list('setq,var,exp)$ endmodule; module gparser; %% GENTRAN Parser Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Point: GentranParse symbolic$ % GENTRAN Global Variable % global '(!*reservedops!*)$ !*reservedops!* := '(and block cond difference equal expt for geq go greaterp leq lessp mat minus neq not or plus procedure progn quotient read recip repeat return setq times while write)$ %reserved operators procedure gentranparse forms; for each f in forms do if not(gpstmtp f or gpexpp f or gpdefnp f) then gentranerr('e, f, "CANNOT BE TRANSLATED", nil)$ procedure gpexpp exp; % exp ::= id | number | (PLUS exp exp') | (MINUS exp) | % % (DIFFERENCE exp exp) | (TIMES exp exp exp') | % % (RECIP exp) |(QUOTIENT exp exp) | (EXPT exp exp) | (id arg') % if atom exp then idp exp or numberp exp else if car exp memq '(!:rd!: !:cr!: !:crn!: !:gi!:) then t else if car exp eq 'plus then length exp >= 2 and gpexpp cadr exp and gpexp1p cddr exp else if car exp memq '(minus recip) then length exp=2 and gpexpp cadr exp else if car exp memq '(difference quotient expt) then length exp=3 and gpexpp cadr exp and gpexpp caddr exp else if car exp eq 'times then length exp >= 3 and gpexpp cadr exp and gpexpp caddr exp and gpexp1p cdddr exp else if car exp eq '!:rd!: then t else if car exp memq '(!:cr!: !:crn!: !:gi!:) then t else if unresidp car exp then gparg1p cdr exp$ procedure gpexp1p exp; % exp' ::= exp exp' | eps % null exp or (gpexpp car exp and gpexp1p cdr exp)$ procedure gplogexpp exp; % logexp ::= id | (EQUAL exp exp) | (NEQ exp exp) | % % (GREATERP exp exp) |(GEQ exp exp) | (LESSP exp exp) | % % (LEQ exp exp) | (NOT logexp) | (AND logexp logexp logexp')% % | (OR logexp logexp logexp') | (id arg') % if atom exp then idp exp else if car exp memq '(equal neq greaterp geq lessp leq) then length exp=3 and gpexpp cadr exp and gpexpp caddr exp else if car exp eq 'not then length exp=2 and gplogexpp cadr exp else if car exp memq '(and or) then length exp >= 3 and gplogexpp cadr exp and gplogexpp caddr exp and gplogexp1p cdddr exp else if unresidp car exp then gparg1p cdr exp$ procedure gplogexp1p exp; % logexp' ::= logexp logexp' | eps % null exp or (gplogexpp car exp and gplogexp1p cdr exp)$ procedure gpargp exp; % arg ::= string | exp | logexp % stringp exp or gpexpp exp or gplogexpp exp$ procedure gparg1p exp; % arg' ::= arg arg' | eps % null exp or (gpargp car exp and gparg1p cdr exp)$ procedure gpvarp exp; % var ::= id | (id exp exp') % if atom exp then idp exp else if unresidp car exp then length exp >= 2 and gpexpp cadr exp and gpexp1p cddr exp$ procedure gplistp exp; % list ::= (exp exp') % if pairp exp then length exp >= 1 and gpexpp car exp and gpexp1p cdr exp$ procedure gplist1p exp; % list' ::= list list' | eps % null exp or (gplistp car exp and gplist1p cdr exp)$ procedure gpid1p exp; % id' ::= id id' | eps % null exp or (idp car exp and gpid1p cdr exp)$ procedure gpstmtp exp; % stmt ::= id | (SETQ setq') | (COND cond') | (WHILE logexp stmt) | % % (REPEAT stmt logexp) | (FOR var (exp exp exp) DO stmt) | % % (GO id) | (RETURN arg) | (WRITE arg arg') | % % (PROGN stmt stmt') | (BLOCK (id') stmt') | (id arg') % if atom exp then idp exp else if car exp memq '(!:rd!: !:cr!: !:crn!: !:gi!:) then nil else if car exp eq 'setq then gpsetq1p cdr exp else if car exp eq 'cond then gpcond1p cdr exp else if car exp eq 'while then length exp=3 and gplogexpp cadr exp and gpstmtp caddr exp else if car exp eq 'repeat then length exp=3 and gpstmtp cadr exp and gplogexpp caddr exp else if car exp eq 'for then length exp=5 and gpvarp cadr exp and pairp caddr exp and (length caddr exp=3 and gpexpp car caddr exp and gpexpp cadr caddr exp and gpexpp caddr caddr exp) and cadddr exp eq 'do and gpstmtp car cddddr exp else if car exp eq 'go then length exp=2 and idp cadr exp else if car exp eq 'return then length exp=2 and gpargp cadr exp else if car exp eq 'write then length exp >= 2 and gpargp cadr exp and gparg1p cddr exp else if car exp eq 'progn then length exp >= 2 and gpstmtp cadr exp and gpstmt1p cddr exp else if car exp eq 'block then length exp >= 2 and gpid1p cadr exp and gpstmt1p cddr exp else if unresidp car exp then gparg1p cdr exp$ procedure gpsetq1p exp; % setq' ::= id setq'' | (id exp exp') setq''' % if exp and length exp=2 then if atom car exp then idp car exp and gpsetq2p cdr exp else (length car exp >= 2 and idp car car exp and unresidp car car exp and gpexpp cadr car exp and gpexp1p cddr car exp) and gpsetq3p cdr exp$ procedure gpsetq2p exp; % setq'' ::= (MAT list list') | setq''' % if exp then if eqcar(car exp, 'mat) then onep length exp and (gplistp cadar exp and gplist1p cddar exp) else gpsetq3p exp$ procedure gpsetq3p exp; % setq''' ::= (FOR var (exp exp exp) forop exp) | (READ) | exp | logexp if exp and onep length exp then gpexpp car exp or gplogexpp car exp or (if caar exp eq 'for then length car exp=5 and gpvarp cadar exp and (pairp caddar exp and length caddar exp=3 and gpexpp car caddar exp and gpexpp cadr caddar exp and gpexpp caddr caddar exp) and gpforopp car cdddar exp and gpexpp cadr cdddar exp else if caar exp eq 'read then onep length car exp)$ procedure gpforopp exp; % forop ::= SUM | PRODUCT % exp memq '(sum product)$ procedure gpcond1p exp; % cond' ::= (logexp stmt) cond' | eps % null exp or (pairp car exp and length car exp=2 and gplogexpp caar exp and gpstmtp cadar exp and gpcond1p cdr exp)$ procedure gpstmt1p exp; % stmt' ::= stmt stmt' | eps % null exp or (gpstmtp car exp and gpstmt1p cdr exp)$ procedure gpdefnp exp; % defn ::= (PROCEDURE id NIL EXPR (id') stmt) % eqcar(exp, 'procedure) and length exp=6 and idp cadr exp and null caddr exp and atom cadddr exp and gpid1p car cddddr exp and gpstmtp cadr cddddr exp and not idp cadr cddddr exp$ %% %% %% Predicates %% %% %% procedure unresidp id; not (id memq !*reservedops!*)$ endmodule; module redlsp; %% GENTRAN LISP Code Generation Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Point: LispCode symbolic$ % GENTRAN Global Variables % global '(!*lisparithexpops!* !*lisplogexpops!* !*redarithexpops!* !*redlogexpops!* !*redreswds!* !*redstmtgpops!* !*redstmtops!*)$ !*redarithexpops!*:= '(difference expt minus plus quotient recip times)$ !*redlogexpops!* := '(and equal geq greaterp leq lessp neq not or)$ !*redreswds!* := '(and block cond de difference end equal expt !~for for geq getel go greaterp leq lessp list minus neq not or plus plus2 prog progn procedure quotient read recip repeat return setel setk setq stop times times2 while write)$ %REDUCE reserved words !*redstmtgpops!* := '(block progn)$ !*redstmtops!* := '(cond end !~for for go repeat return setq stop while write)$ % REDUCE Non-local Variable % fluid '(!*period); global '(deftype!*)$ global '(!*do!* !*for!*)$ % Irena variable referenced here. global '(irena!-constants)$ irena!-constants := nil$ procedure lispcode forms; for each f in forms collect if redexpp f then lispcodeexp(f, !*period) else if redstmtp f or redstmtgpp f then lispcodestmt f else if reddefp f then lispcodedef f else if pairp f then for each e in f collect lispcode e$ symbolic procedure check!-for!-irena!-constants form; if listp form and memq(car form,!*redarithexpops!*) then for each u in cdr form do check!-for!-irena!-constants(u) else if pairp form and car form memq '( !:cr!: !:crn!: !:gi!: )then repeat << form := cdr form; check!-for!-irena!-constants(if atom form then form else car form); >> until atom form else if form and atom form then if memq(form,irena!-constants) then set(get(form,'!*found!-flag),t)$ symbolic procedure lispcodeexp(form, fp); % (RECIP exp) ==> (QUOTIENT 1.0 exp) % % (DIFFERENCE exp1 exp2) ==> (PLUS exp1 (MINUS exp2)) % % integer ==> floating point iff PERIOD flag is ON & % % not exponent & % % not subscript & % % not loop index % % The above is a little simplistic. We have problems % With expressions like x**(1/2) % Now believed fixed. JHD 14.5.88 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % mcd 16-11-88. Added code to spot certain variables which irena % needs to generate values for. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% begin return if numberp form then if fp then float form else form % Substitute (EXP 1) for e - mcd 29/4/88 % else if form eq 'e then lispcodeexp(list('exp,1.0),fp) else if atom form or car form memq '( !:rd!: !:cr!: !:crn!: !:gi!: )then << if irena!-constants and form and not stringp form then check!-for!-irena!-constants form; form >> else if car form eq 'expt then % Changes (EXPT E X) to (EXP X). mcd 29/4/88 % if cadr form eq 'e then lispcodeexp(list('exp,caddr form),fp) else if caddr form = '(quotient 1 2) then lispcodeexp(list('sqrt,cadr form),fp) else if eqcar(caddr form,'!:rd!:) then begin scalar r; r := realrat caddr form; return if r = '(1 . 2) then {'sqrt,lispcodeexp(cadr form, fp)} else {'expt,lispcodeexp(cadr form, fp), lispcodeexp({'quotient,car r,cdr r},nil)} end else list('expt,lispcodeexp(cadr form,fp),lispcodeexp(caddr form,nil)) else if car form eq 'quotient then % re-instate periods if necessary %e.g. in expressions like **(1/3) list('quotient, lispcodeexp(cadr form, t), lispcodeexp(caddr form, t)) else if car form eq 'recip then if !*period then % test this not FP, for same reason as above list('quotient, 1.0, lispcodeexp(cadr form, fp)) else list('quotient, 1, lispcodeexp(cadr form, fp)) else if car form eq 'difference then list('plus, lispcodeexp(cadr form, fp), list('minus, lispcodeexp(caddr form, fp))) else if not car form memq !*lisparithexpops!* and not car form memq !*lisplogexpops!* then for each elt in form collect lispcodeexp(elt, nil) else for each elt in form collect lispcodeexp(elt, fp)$ end$ procedure lispcodestmt form; if atom form then form else if redassignp form then lispcodeassign form else if redreadp form then lispcoderead form else if redprintp form then lispcodeprint form else if redwhilep form then lispcodewhile form else if redrepeatp form then lispcoderepeat form else if redforp form then lispcodefor form else if redcondp form then lispcodecond form else if redreturnp form then lispcodereturn form else if redstmtgpp form then lispcodestmtgp form else if reddefp form then lispcodedef form else if car form eq 'literal then for each elt in form collect lispcodeexp(elt, nil) else for each elt in form collect lispcodeexp(elt, !*period)$ symbolic procedure lispcodeassign form; % Modified mcd 27/11/87 to prevent coercing things already declared as % integers to reals when the PERIOD flag is on. % % (SETQ var (MAT lst lst')) --> (PROGN (SETQ (var 1 1) exp11) % % (SETQ (var 1 2) exp12) % % . % % . % % (SETQ (var m n) expmn)) % if eqcar( caddr form, 'mat) then begin scalar name, r, c, relts, result,ftype; name := cadr form; form := caddr form; r := c := 1; ftype := symtabget(nil,name); if null ftype then ftype := !*period else << ftype := cadr ftype; ftype := if ftype equal 'integer or (ftype equal 'scalar and deftype!* equal 'integer) then nil else !*period; >>; while form := cdr form do << relts := car form; repeat << result := mkassign(list(name, r, c), lispcodeexp(car relts, ftype)) . result; c := add1 c >> until null(relts := cdr relts); r := add1 r; c := 1 >>; return mkstmtgp(nil, reverse result) end else begin scalar ftype,name; name := cadr form; if pairp name then name := car name; ftype := symtabget(nil,name); if null ftype then ftype := !*period else << ftype := cadr ftype; ftype := if ftype equal 'integer or (ftype equal 'scalar and deftype!* equal 'integer) then nil else !*period; >>; if cadr form eq 'e then % To prevent an 'e on the lhs % being changed to exp(1) by lispcodeexp % mcd 29/4/88 return mkassign('e,lispcodeexp(caddr form, ftype)) else return mkassign(lispcodeexp(cadr form, ftype), lispcodeexp(caddr form, ftype)) end$ procedure lispcoderead form; % (SETQ var (READ)) --> (READ var) % list('read, lispcodeexp(cadr form, nil))$ procedure lispcodeprint form; 'write . for each elt in cdr form collect lispcodeexp(elt, !*period)$ procedure lispcodewhile form; 'while . lispcodeexp(cadr form, !*period) . foreach st in cddr form collect lispcodestmt st$ procedure lispcoderepeat form; begin scalar body, logexp; body := reverse cdr form; logexp := car body; body := reverse cdr body; return 'repeat . append(foreach st in body collect lispcodestmt st, list lispcodeexp(logexp, !*period)) end$ procedure lispcodefor form; % (SETQ var1 (FOR var (exp1 exp2 exp3) SUM exp)) % --> (PROGN (SETQ var1 0/0.0) % (FOR var (exp1 exp2 exp3) DO (SETQ var1 (PLUS var1 exp)))) % (SETQ var1 (FOR var (exp1 exp2 exp3) PRODUCT exp)) % --> (PROGN (SETQ var1 1/1.0) % (FOR var (exp1 exp2 exp3) DO (SETQ var1 (TIMES var1 exp)))) if car form eq 'for then begin scalar explst, stmtlst; explst := list(cadr form, caddr form); stmtlst := cddddr form; return append(!*for!* . foreach exp in explst collect lispcodeexp(exp, nil), !*do!* . foreach st in stmtlst collect lispcodestmt st) end else begin scalar var1, var, explst, op, exp; var1 := cadr form; form := caddr form; var := cadr form; explst := caddr form; if cadddr form eq 'sum then op := 'plus else op := 'times; exp := car cddddr form; form := list('prog, nil, list('setq, var1, if op eq 'plus then 0 else 1), list(!*for!*, var, explst, !*do!*, list('setq, var1, list(op, var1, exp)))); return lispcodestmt form end$ procedure lispcodecond form; begin scalar result, pr; while form := cdr form do << pr := car form; pr := lispcodeexp(car pr, !*period) . for each stmt in cdr pr collect lispcodestmt stmt; result := pr . result >>; return mkcond reverse result end$ procedure lispcodereturn form; % (RETURN NIL) --> (RETURN) % if form member '((return) (return nil)) then list 'return else mkreturn lispcodeexp(cadr form, !*period)$ procedure lispcodestmtgp form; % (BLOCK () stmt1 stmt2 .. stmtm) % % --> (PROG () stmt1 stmt2 .. stmtm) % if car form memq '(prog block) then mkstmtgp(cadr form, for each stmt in cddr form collect lispcodestmt stmt) else mkstmtgp(0, for each stmt in cdr form collect lispcodestmt stmt)$ procedure lispcodedef form; % (PROCEDURE id NIL EXPR (p1 p2 .. pn) stmt') % % --> (DEFUN id (p1 p2 .. pn) stmt') % if car form eq 'procedure then mkdef(cadr form, car cddddr form, for each stmt in cdr cddddr form collect lispcodestmt stmt) else mkdef(cadr form, caddr form, for each stmt in cdddr form collect lispcodestmt stmt)$ %% REDUCE Form Predicates %% procedure redassignp form; eqcar(form, 'setq) and redassign1p caddr form$ procedure redassign1p form; if atom form then t else if car form eq 'setq then redassign1p caddr form else if car form memq '(read for) then nil else t$ procedure redcondp form; eqcar(form, 'cond)$ procedure reddefp form; eqcar(form, 'procedure)$ procedure redexpp form; atom form or car form memq !*redarithexpops!* or car form memq !*redlogexpops!* or not(car form memq !*redreswds!*)$ procedure redforp form; if pairp form then if car form eq 'for then t else if car form eq 'setq then redfor1p caddr form$ procedure redfor1p form; if atom form then nil else if car form eq 'setq then redfor1p caddr form else if car form eq 'for then t$ procedure redprintp form; eqcar(form, 'write)$ procedure redreadp form; eqcar(form, 'setq) and redread1p caddr form$ procedure redread1p form; if atom form then nil else if car form eq 'setq then redread1p caddr form else if car form eq 'read then t$ procedure redrepeatp form; eqcar(form, 'repeat)$ procedure redreturnp form; eqcar(form, 'return)$ procedure redstmtp form; atom form or car form memq !*redstmtops!* or atom car form and not(car form memq !*redreswds!*)$ procedure redstmtgpp form; pairp form and car form memq !*redstmtgpops!*$ procedure redwhilep form; eqcar(form, 'while)$ endmodule; module segmnt; %% Segmentation Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry points: Seg, MARKEDVARP, MARKVAR, TEMPVAR, UNMARKVAR symbolic$ % User-Accessible Global Variables % global '(gentranlang!* maxexpprintlen!* tempvarname!* tempvarnum!* tempvartype!*)$ share gentranlang!*, maxexpprintlen!*, tempvarname!*, tempvarnum!*, tempvartype!*$ maxexpprintlen!* := 800$ tempvarname!* := 't$ tempvarnum!* := 0$ tempvartype!* := nil$ % User-Accessible Primitive Functions % operator markedvarp, markvar, tempvar, unmarkvar$ global '(!*do!* !*for!*)$ %% %% %% Segmentation Routines %% %% %% procedure seg forms; % exp --+--> exp % % +--> (assign assign ... assign exp ) % % (1) (2) (n-1) (n) % % stmt --+--> stmt % % +--> stmtgp % % stmtgp --> stmtgp % % def --> def % for each f in forms collect if lispexpp f then if toolongexpp f then segexp(f, 'unknown) else f else if lispstmtp f then segstmt f else if lispstmtgpp f then if toolongstmtgpp f then seggroup f else f else if lispdefp f then if toolongdefp f then segdef f else f else f$ procedure segexp(exp, type); % exp --> (assign assign ... assign exp ) % % (1) (2) (n-1) (n) % reverse segexp1(exp, type)$ procedure segexp1(exp, type); % exp --> (exp assign assign ... assign ) % % (n) (n-1) (n-2) (1) % begin scalar res; res := segexp2(exp, type); unmarkvar res; if car res = cadadr res then << res := cdr res; rplaca(res, caddar res) >>; return res end$ procedure segexp2(exp, type); % exp --> (exp assign assign ... assign ) % % (n) (n-1) (n-2) (1) % begin scalar expn, assigns, newassigns, unops, op, termlist, var, tmp; expn := exp; while length expn=2 do << unops := car expn . unops; expn := cadr expn >>; op := car expn; for each term in cdr expn do << if toolongexpp term then << tmp := segexp2(term, type); term := car tmp; newassigns := cdr tmp >> else newassigns := '(); if toolongexpp (op . term . termlist) and termlist and (length termlist > 1 or pairp car termlist) then << unmarkvar termlist; var := var or tempvar type; markvar var; assigns := mkassign(var, if onep length termlist then car termlist else op . termlist) . assigns; termlist := list(var, term) >> else termlist := append(termlist, list term); assigns := append(newassigns, assigns) >>; expn := if onep length termlist then car termlist else op . termlist; while unops do << expn := list(car unops, expn); unops := cdr unops >>; if expn = exp then << unmarkvar expn; var := var or tempvar type; markvar var; assigns := list mkassign(var, expn); expn := var >>; return expn . assigns end$ procedure segstmt stmt; % assign --+--> assign % % +--> stmtgp % % cond --+--> cond % % +--> stmtgp % % while --+--> while % % +--> stmtgp % % repeat --> repeat % % for --+--> for % % +--> stmtgp % % return --+--> return % % +--> stmtgp % if lispassignp stmt then if toolongassignp stmt then segassign stmt else stmt else if lispcondp stmt then if toolongcondp stmt then segcond stmt else stmt else if lispwhilep stmt then if toolongwhilep stmt then segwhile stmt else stmt else if lisprepeatp stmt then if toolongrepeatp stmt then segrepeat stmt else stmt else if lispforp stmt then if toolongforp stmt then segfor stmt else stmt else if lispreturnp stmt then if toolongreturnp stmt then segreturn stmt else stmt else stmt$ procedure segassign stmt; % assign --> stmtgp % begin scalar var, exp, type; var := cadr stmt; type := getvartype var; exp := caddr stmt; stmt := segexp1(exp, type); rplaca(stmt, mkassign(var, car stmt)); return mkstmtgp(nil, reverse stmt) end$ procedure segcond condd; % cond --+--> cond % % +--> stmtgp % begin scalar tassigns, res, markedvars, type; %if gentranlang!* eq 'c % then type := 'int % else type := 'logical; type:=get(gentranlang!*,'boolean!-type) or get('fortran,'boolean!-type); while condd := cdr condd do begin scalar exp, stmt; if toolongexpp(exp := caar condd) then << exp := segexp1(exp, type); tassigns := append(cdr exp, tassigns); exp := car exp; markvar exp; markedvars := exp . markedvars >>; stmt := for each st in cdar condd conc seg list st; res := (exp . stmt) . res end; unmarkvar markedvars; return if tassigns then mkstmtgp(nil, reverse(mkcond reverse res . tassigns)) else mkcond reverse res end$ procedure segwhile stmt; % while --+--> while % % +--> stmtgp % begin scalar logexp, stmtlst, tassigns, type, res; logexp := cadr stmt; stmtlst := cddr stmt; if toolongexpp logexp then << type:=get(gentranlang!*,'boolean!-type) or get('fortran,'boolean!-type); % if gentranlang!* eq 'c % then type := 'int % else type := 'logical; tassigns := segexp1(logexp, type); logexp := car tassigns; tassigns := cdr tassigns >>; stmtlst := foreach st in stmtlst conc seg list st; res := 'while . logexp . stmtlst; if tassigns then << res := append(res, reverse tassigns); res := 'progn . append(reverse tassigns, list res) >>; return res end$ procedure segrepeat stmt; % repeat --> repeat % begin scalar stmtlst, logexp, type; stmt := reverse cdr stmt; logexp := car stmt; stmtlst := reverse cdr stmt; stmtlst := foreach st in stmtlst conc seg list st; if toolongexpp logexp then << type:=get(gentranlang!*,'boolean!-type) or get('fortran,'boolean!-type); % if gentranlang!* eq 'c % then type := 'int % else type := 'logical; logexp := segexp1(logexp, type); stmtlst := append(stmtlst, reverse cdr logexp); logexp := car logexp >>; return 'repeat . append(stmtlst, list logexp) end$ procedure segfor stmt; % for --+--> for % % +--> stmtgp % begin scalar var, loexp, stepexp, hiexp, stmtlst, tassigns1, tassigns2, type, markedvars, res; var := cadr stmt; type := getvartype var; stmt := cddr stmt; loexp := caar stmt; stepexp := cadar stmt; hiexp := caddar stmt; stmtlst := cddr stmt; if toolongexpp loexp then << loexp := segexp1(loexp, type); tassigns1 := reverse cdr loexp; loexp := car loexp; markvar loexp; markedvars := loexp . markedvars >>; if toolongexpp stepexp then << stepexp := segexp1(stepexp, type); tassigns2 := reverse cdr stepexp; stepexp := car stepexp; markvar stepexp; markedvars := stepexp . markedvars >>; if toolongexpp hiexp then << hiexp := segexp1(hiexp, type); tassigns1 := append(tassigns1, reverse cdr hiexp); tassigns2 := append(tassigns2, reverse cdr hiexp); hiexp := car hiexp >>; unmarkvar markedvars; stmtlst := foreach st in stmtlst conc seg list st; stmtlst := append(stmtlst, tassigns2); res := !*for!* . var . list(loexp, stepexp, hiexp) . !*do!* . stmtlst; if tassigns1 then return mkstmtgp(nil, append(tassigns1, list res)) else return res end$ procedure segreturn ret; % return --> stmtgp % << ret := segexp1(cadr ret, 'unknown); rplaca(ret, mkreturn car ret); mkstmtgp(nil, reverse ret) >>$ procedure seggroup stmtgp; % stmtgp --> stmtgp % begin scalar locvars, res; if car stmtgp eq 'prog then << locvars := cadr stmtgp; stmtgp := cdr stmtgp >> else locvars := 0; while stmtgp := cdr stmtgp do res := append(seg list car stmtgp, res); return mkstmtgp(locvars, reverse res) end$ procedure segdef deff; % def --> def % mkdef(cadr deff, caddr deff, for each stmt in cdddr deff conc seg list stmt)$ %% %% %% Long Statement & Expression Predicates %% %% %% procedure toolongexpp exp; numprintlen exp > maxexpprintlen!*$ procedure toolongstmtp stmt; if atom stmt then nil else if lispstmtp stmt then if lispcondp stmt then toolongcondp stmt else if lispassignp stmt then toolongassignp stmt else if lispreturnp stmt then toolongreturnp stmt else if lispwhilep stmt then toolongwhilep stmt else if lisprepeatp stmt then toolongrepeatp stmt else if lispforp stmt then toolongforp stmt else lispeval('or . for each exp in stmt collect toolongexpp exp) else toolongstmtgpp stmt$ procedure toolongassignp assign; toolongexpp caddr assign$ procedure toolongcondp condd; begin scalar toolong; while condd := cdr condd do if toolongexpp caar condd or toolongstmtp cadar condd then toolong := t; return toolong end$ procedure toolongwhilep stmt; toolongexpp cadr stmt or lispeval('or . foreach st in cddr stmt collect toolongstmtp st)$ procedure toolongrepeatp stmt; << stmt := reverse cdr stmt; toolongexpp car stmt or lispeval('or . foreach st in cdr stmt collect toolongstmtp st) >>$ procedure toolongforp stmt; lispeval('or . foreach exp in caddr stmt collect toolongexpp exp ) or lispeval('or . foreach st in cddddr stmt collect toolongstmtp st )$ procedure toolongreturnp ret; toolongexpp cadr ret$ procedure toolongstmtgpp stmtgp; lispeval('or . for each stmt in cdr stmtgp collect toolongstmtp stmt )$ procedure toolongdefp deff; if lispstmtgpp cadddr deff then toolongstmtgpp cadddr deff else lispeval('or . for each stmt in cdddr deff collect toolongstmtp stmt)$ %% %% %% Print Length Function %% %% %% symbolic procedure numprintlen exp; if atom exp then length explode exp else if onep length exp then numprintlen car exp else if car exp = '!:rd!: then % 2+length explode cadr exp + length explode cddr exp %else if car exp memq '( !:cr!: !:crn!: !:gi!: ) then % 8+length explode cadr exp + length explode cddr exp << exp := rd!:explode exp; 2+length car exp + length explode cadr exp >> else if car exp memq '( !:cr!: !:crn!: !:gi!: ) then << exp := cons (rd!:explode('!:rd!: . cadr exp), rd!:explode('!:rd!: . cddr exp)); 12 + length caar exp + length explode cdar exp + length cadr exp + length explode cddr exp >> else length exp + lispeval('plus . for each elt in cdr exp collect numprintlen elt )$ %% %% %% Temporary Variable Generation, Marking & Unmarking Functions %% %% %% procedure tempvar type; % % % IF type Member '(NIL 0) THEN type <- TEMPVARTYPE!* % % % % IF type Neq 'NIL And type Neq 'UNKNOWN THEN % % var <- 1st unmarked tvar of VType type or of VType NIL % % which isn't in the symbol table % % put type on var's VType property list % % put declaration in symbol table % % ELSE IF type = NIL THEN % % var <- 1st unmarked tvar of type NIL which isn't in the % % symbol table % % ELSE type = 'UNKNOWN % % var <- 1st unmarked tvar of type NIL which isn't in the % % symbol table % % put 'UNKNOWN on var's VType property list % % print warning - "undeclared" % % % % RETURN var % % % begin scalar tvar, xname, num; if type memq '(nil 0) then type := tempvartype!*; xname := explode tempvarname!*; num := tempvarnum!*; if type memq '(nil unknown) then repeat << tvar := intern compress append(xname, explode num); num := add1 num >> until not markedvarp tvar and not get(tvar, '!*vtype!*) and not getvartype tvar else repeat << tvar := intern compress append(xname, explode num); num := add1 num >> until not markedvarp tvar and (get(tvar, '!*vtype!*) eq type or not get(tvar, '!*vtype!*) and not getvartype tvar); put(tvar, '!*vtype!*, type); if type eq 'unknown then gentranerr('w, tvar, "UNDECLARED VARIABLE", nil) else if type then symtabput(nil, tvar, list type); return tvar end$ symbolic procedure isnumber u; numberp(u) or (pairp(u) and memq(car u,domainlist!*) )$ symbolic procedure markvar var; if isnumber var then var else if atom var then << flag(list var, '!*marked!*); var >> else << for each v in var do markvar v; var >>$ symbolic procedure markedvarp var; flagp(var, '!*marked!*)$ symbolic procedure unmarkvar var; if isnumber var then var else if atom var then remflag(list var, '!*marked!*) else foreach elt in var do unmarkvar elt$ endmodule; module lspfor; %% GENTRAN LISP-to-FORTRAN Translation Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Updates: % M. Warns 7 Oct 89 Patch in FORTEXP1 for negative constant exponents % and integer arguments of functions like SQRT added. % M.C. Dewar and J.H. Davenport 8 Jan 88 Double precision etc. added. % Entry Point: FortCode symbolic$ % To allow Fortran-90 Extensions: fluid '(!*f90)$ switch f90$ fluid '(!*gendecs)$ switch gendecs$ fluid '(!*getdecs)$ fluid '(!*makecalls)$ switch makecalls$ !*makecalls := t$ % User-Accessible Global Variables % global '(gentranlang!* fortlinelen!* minfortlinelen!* fortcurrind!* !*fortcurrind!* tablen!*)$ share fortcurrind!*, fortlinelen!*, minfortlinelen!*, tablen!*$ fortcurrind!* := 0$ !*fortcurrind!* := 6$ %current level of indentation for FORTRAN code fortlinelen!* := 72$ minfortlinelen!* := 40$ % Double Precision Switch (defaults to OFF) - mcd 13/1/88 % fluid '(!*double); % !*double := t; switch double; % GENTRAN Global Variables % global '(!*notfortranfuns!* !*endofloopstack!* !*subprogname!*)$ !*notfortranfuns!*:= '(acosh asinh atanh cot dilog erf expint sec)$ %mcd 10/11/87 !*endofloopstack!* := nil$ !*subprogname!* := nil$ %name of subprogram being generated global '(!*do!* deftype!*)$ % The following ought to be all the legal Fortran types mcd 19/11/87. global '(!*legalforttypes!*); !*legalforttypes!* := '(real integer complex real!*8 complex!*16 logical implicit! integer implicit! real implicit! complex implicit! real!*8 implicit! complex!*16 implicit! logical)$ global '(!*stdout!*)$ global '(!*posn!* !$!#); %% %% %% LISP-to-FORTRAN Translation Functions %% %% %% put('fortran,'formatter,'formatfort); put('fortran,'codegen,'fortcode); put('fortran,'proctem,'procforttem); put('fortran,'gendecs,'fortdecs); put('fortran,'assigner,'mkffortassign); put('fortran,'boolean!-type,'logical); %% Control Function %% symbolic procedure fortcode forms; for each f in forms conc if atom f then fortexp f else if car f memq '(!:rd!: !:cr!: !:crn!: !:gi!:) then fortexp f else if lispstmtp f or lispstmtgpp f then if !*gendecs then begin scalar r; r := append(fortdecs symtabget('!*main!*, '!*decs!*), fortstmt f); symtabrem('!*main!*, '!*decs!*); return r end else fortstmt f else if lispdefp f then fortsubprog f else fortexp f$ %% Subprogram Translation %% symbolic procedure fortsubprog deff; begin scalar type, stype, name, params, body, lastst, r; name := !*subprogname!* := cadr deff; if onep length (body := cdddr deff) and lispstmtgpp car body then << body := cdar body; if null car body then body := cdr body >>; if lispreturnp (lastst := car reverse body) then body := append(body, list '(end)) else if not lispendp lastst then body := append(body, list('(return), '(end))); type := symtabget(name, name); if type then type := cadr type; stype := symtabget(name, '!*type!*) or ( if type or functionformp(body, name) then 'function else 'subroutine ); symtabrem(name, '!*type!*); params := symtabget(name, '!*params!*) or caddr deff; symtabrem(name, '!*params!*); if !*getdecs and null type and stype eq 'function then type := deftype!*; if type then << symtabrem(name, name); % Generate the correct double precision type name - mcd 28/1/88 % if !*double then if type memq '(real real*8) then type := 'double! precision else if type eq 'complex then type := 'complex!*16; >>; r := mkffortsubprogdec(type, stype, name, params); if !*gendecs then r := append(r, fortdecs symtabget(name, '!*decs!*)); r := append(r, for each s in body conc fortstmt s); if !*gendecs then << symtabrem(name, nil); symtabrem(name, '!*decs!*) >>; return r end$ %% Generation of Declarations %% symbolic procedure fortdecs decs; for each tl in formtypelists decs conc mkffortdec(car tl, cdr tl)$ %% Expression Translation %% procedure fortexp exp; fortexp1(exp, 0)$ symbolic procedure fortexp1(exp, wtin); if atom exp then list fortranname exp else if listp exp and onep length exp then fortranname exp else if optype car exp then begin scalar wt, op, res; wt := fortranprecedence car exp; op := fortranop car exp; exp := cdr exp; if onep length exp then res := op . fortexp1(car exp, wt) else << res := fortexp1(car exp, wt); if op eq '!+ then while exp := cdr exp do << if atom car exp or caar exp neq 'minus then res := append(res, list op); res := append(res, fortexp1(car exp, wt)) >> else if op eq '!*!* then while exp := cdr exp do begin if numberp car exp and lessp(car exp, 0) then res := append(append(res, list op), insertparens fortexp1(car exp, wt)) else res := append(append(res, list op), fortexp1(car exp, wt)) end else while exp := cdr exp do res := append(append(res, list op), fortexp1(car exp, wt)) >>; if wtin >= wt then res := insertparens res; return res end else if car exp eq 'literal then fortliteral exp else if car exp eq 'range then append(fortexp cadr exp,'!: . fortexp caddr exp) else if car exp eq '!:rd!: then if smallfloatp cdr exp then list cdr exp else begin scalar mt; % Print bigfloats more naturally. MCD 26/2/90 integer dotpos,!:lower!-sci!:,!:upper!-sci!:; % This forces most numbers to exponential format. mt := rd!:explode exp; exp := car mt; mt := cadr mt + caddr mt - 1; exp := append(list('literal,car exp, '!.),cdr exp); if null (mt = 0) then exp := append(exp, list(if !*double then '!D else '!E,mt)) else if !*double then exp := append(exp,'(!D 0)); return fortliteral exp; end else if car exp eq '!:crn!: then fortexp1(!*crn2cr exp,wtin) else if car exp eq '!:gi!: then fortexp1(!*gi2cr exp,wtin) else if car exp eq '!:cr!: then if !*double and !*f90 then ('cmplx!().append(fortexp1(cons('!:rd!:,cadr exp),wtin), ('!,).append(fortexp1(cons('!:rd!:,cddr exp),wtin), list( '!, , 'kind!(!1!.!0!D!0!) , '!) )) ) else ('cmplx!().append(fortexp1(cons('!:rd!:,cadr exp),wtin), ('!,).append(fortexp1(cons('!:rd!:,cddr exp),wtin), list '!))) % We must make this list up at run time, since there's % a CONC loop that relies on being able to RPLAC into it. % Yuck. JHD/MCD 19.6.89 else begin scalar op, res, intrinsic; intrinsic := get(car exp, '!*fortranname!*); op := fortranname car exp; exp := cdr exp; % Make the arguments of intrinsic functions real if we aren't % sure. Note that we can't simply evaluate the argument and % test that, unless it is a constant. MCD 7/11/89. res := cdr foreach u in exp conc '!, . if not intrinsic then fortexp1(u,0) else if fixp u then list float u else if isfloat u or memq(op,'(real dble)) then fortexp1(u,0) else (fortranname 'real . insertparens fortexp1(u,0)); return op . insertparens res end; symbolic procedure isfloat u; % Returns T if u is a float or a list whose car is an intrinsic % function name. MCD 7/11/89. floatp(u) or (idp u and declared!-as!-float(u) ) or pairp(u) and (car u eq '!:rd!: or get(car u,'!*fortranname!*) or declared!-as!-float(car u) ); procedure fortranop op; get(op, '!*fortranop!*) or op$ put('or, '!*fortranop!*, '!.or!. )$ put('and, '!*fortranop!*, '!.and!.)$ put('not, '!*fortranop!*, '!.not!.)$ put('equal, '!*fortranop!*, '!.eq!. )$ put('neq, '!*fortranop!*, '!.ne!. )$ put('greaterp, '!*fortranop!*, '!.gt!. )$ put('geq, '!*fortranop!*, '!.ge!. )$ put('lessp, '!*fortranop!*, '!.lt!. )$ put('leq, '!*fortranop!*, '!.le!. )$ put('plus, '!*fortranop!*, '!+ )$ put('times, '!*fortranop!*, '!* )$ put('quotient, '!*fortranop!*, '/ )$ put('minus, '!*fortranop!*, '!- )$ put('expt, '!*fortranop!*, '!*!* )$ % This procedure (and FORTRANNAME, RATFORNAME properties, and % the DOUBLE flag) are shared between FORTRAN and RATFOR procedure fortranname a; % Amended mcd 10/11/87 if stringp a then stringtoatom a % convert a to atom containing "'s else << if a memq !*notfortranfuns!* then << wrs cdr !*stdout!*; prin2 "** WARNING: "; prin1 a; prin2t " is not an intrinsic Fortran function"; >>$ if !*double then get(a, '!*doublename!*) or a else get(a, '!*fortranname!*) or a >>$ put(t, '!*fortranname!*, '!.true!. )$ put(nil, '!*fortranname!*, '!.false!.)$ %% mcd 10/11/87 %% Reduce functions' equivalent Fortran 77 real function names put('abs,'!*fortranname!*, 'abs)$ put('sqrt,'!*fortranname!*, 'sqrt)$ put('exp,'!*fortranname!*, 'exp)$ put('log,'!*fortranname!*, 'alog)$ put('ln,'!*fortranname!*, 'alog)$ put('sin,'!*fortranname!*, 'sin)$ put('cos,'!*fortranname!*, 'cos)$ put('tan,'!*fortranname!*, 'tan)$ put('acos,'!*fortranname!*, 'acos)$ put('asin,'!*fortranname!*, 'asin)$ put('atan,'!*fortranname!*, 'atan)$ put('sinh,'!*fortranname!*, 'sinh)$ put('cosh,'!*fortranname!*, 'cosh)$ put('tanh,'!*fortranname!*, 'tanh)$ put('real,'!*fortranname!*, 'real)$ put('max,'!*fortranname!*, 'amax1)$ put('min,'!*fortranname!*, 'amin1)$ %% Reduce function's equivalent Fortran 77 double-precision names put('abs,'!*doublename!*, 'dabs)$ put('sqrt,'!*doublename!*, 'dsqrt)$ put('exp,'!*doublename!*, 'dexp)$ put('log,'!*doublename!*, 'dlog)$ put('ln,'!*doublename!*, 'dlog)$ put('sin,'!*doublename!*, 'dsin)$ put('cos,'!*doublename!*, 'dcos)$ put('tan,'!*doublename!*, 'dtan)$ put('acos,'!*doublename!*, 'dacos)$ put('asin,'!*doublename!*, 'dasin)$ put('atan,'!*doublename!*, 'datan)$ put('sinh,'!*doublename!*, 'dsinh)$ put('cosh,'!*doublename!*, 'dcosh)$ put('tanh,'!*doublename!*, 'dtanh)$ put(t, '!*doublename!*, '!.true!. )$ put(nil, '!*doublename!*, '!.false!.)$ put('real,'!*doublename!*, 'dble)$ put('max,' !*doublename!*, 'dmax1)$ put('min, '!*doublename!*, 'dmin1)$ %% end of mcd procedure fortranprecedence op; get(op, '!*fortranprecedence!*) or 9$ put('or, '!*fortranprecedence!*, 1)$ put('and, '!*fortranprecedence!*, 2)$ put('not, '!*fortranprecedence!*, 3)$ put('equal, '!*fortranprecedence!*, 4)$ put('neq, '!*fortranprecedence!*, 4)$ put('greaterp, '!*fortranprecedence!*, 4)$ put('geq, '!*fortranprecedence!*, 4)$ put('lessp, '!*fortranprecedence!*, 4)$ put('leq, '!*fortranprecedence!*, 4)$ put('plus, '!*fortranprecedence!*, 5)$ put('times, '!*fortranprecedence!*, 6)$ put('quotient, '!*fortranprecedence!*, 6)$ put('minus, '!*fortranprecedence!*, 7)$ put('expt, '!*fortranprecedence!*, 8)$ %% Statement Translation %% procedure fortstmt stmt; if null stmt then nil else if lisplabelp stmt then fortstmtnum stmt else if car stmt eq 'literal then fortliteral stmt else if lispreadp stmt then fortread stmt else if lispassignp stmt then fortassign stmt else if lispprintp stmt then fortwrite stmt else if lispcondp stmt then fortif stmt else if lispbreakp stmt then fortbreak stmt else if lispgop stmt then fortgoto stmt else if lispreturnp stmt then fortreturn stmt else if lispstopp stmt then fortstop stmt else if lispendp stmt then fortend stmt else if lispwhilep stmt then fortwhile stmt else if lisprepeatp stmt then fortrepeat stmt else if lispforp stmt then fortfor stmt else if lispstmtgpp stmt then fortstmtgp stmt else if lispdefp stmt then fortsubprog stmt else if lispcallp stmt then fortcall stmt$ procedure fortassign stmt; mkffortassign(cadr stmt, caddr stmt)$ procedure fortbreak stmt; if null !*endofloopstack!* then gentranerr('e, nil, "BREAK NOT INSIDE LOOP - CANNOT BE TRANSLATED", nil) else if atom car !*endofloopstack!* then begin scalar n1; n1 := genstmtnum(); rplaca(!*endofloopstack!*, list(car !*endofloopstack!*, n1)); return mkffortgo n1 end else mkffortgo cadar !*endofloopstack!*$ procedure fortcall stmt; mkffortcall(car stmt, cdr stmt)$ procedure fortfor stmt; begin scalar n1, result, var, loexp, stepexp, hiexp, stmtlst; var := cadr stmt; stmt := cddr stmt; loexp := caar stmt; stepexp := cadar stmt; hiexp := caddar stmt; stmtlst := cddr stmt; n1 := genstmtnum(); !*endofloopstack!* := n1 . !*endofloopstack!*; result := mkffortdo(n1, var, loexp, hiexp, stepexp); indentfortlevel(+1); result := append(result, for each st in stmtlst conc fortstmt st); indentfortlevel(-1); result := append(result, mkffortcontinue n1); if pairp car !*endofloopstack!* then result := append(result, mkffortcontinue cadar !*endofloopstack!*); !*endofloopstack!* := cdr !*endofloopstack!*; return result end$ procedure fortend stmt; mkffortend()$ procedure fortgoto stmt; begin scalar stmtnum; if not ( stmtnum := get(cadr stmt, '!*stmtnum!*) ) then stmtnum := put(cadr stmt, '!*stmtnum!*, genstmtnum()); return mkffortgo stmtnum end$ symbolic procedure fortif stmt; begin scalar r, st; r := mkffortif caadr stmt; indentfortlevel(+1); st := seqtogp cdadr stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, fortstmt st); indentfortlevel(-1); stmt := cdr stmt; while (stmt := cdr stmt) and caar stmt neq t do << r := append(r, mkffortelseif caar stmt); indentfortlevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, fortstmt st); indentfortlevel(-1) >>; if stmt then << r := append(r, mkffortelse()); indentfortlevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, fortstmt st); indentfortlevel(-1) >>; return append(r,mkffortendif()); end$ symbolic procedure mkffortif exp; append(append(list(mkforttab(), 'if, '! , '!(), fortexp exp), list('!),'! , 'then , mkfortterpri()))$ symbolic procedure mkffortelseif exp; append(append(list(mkforttab(), 'else, '! , 'if, '! , '!(), fortexp exp), list('!), 'then, mkcterpri()))$ symbolic procedure mkffortelse(); list(mkforttab(), 'else, mkfortterpri())$ symbolic procedure mkffortendif(); list(mkforttab(), 'endif, mkfortterpri())$ procedure fortliteral stmt; mkffortliteral cdr stmt$ procedure fortread stmt; mkffortread cadr stmt$ procedure fortrepeat stmt; begin scalar n, result, stmtlst, logexp; stmtlst := reverse cdr stmt; logexp := car stmtlst; stmtlst := reverse cdr stmtlst; n := genstmtnum(); !*endofloopstack!* := 'dummy . !*endofloopstack!*; result := mkffortcontinue n; indentfortlevel(+1); result := append(result, for each st in stmtlst conc fortstmt st); indentfortlevel(-1); result := append(result, mkffortifgo(list('not, logexp), n)); if pairp car !*endofloopstack!* then result := append(result, mkffortcontinue cadar !*endofloopstack!*); !*endofloopstack!* := cdr !*endofloopstack!*; return result end$ procedure fortreturn stmt; if onep length stmt then mkffortreturn() else if !*subprogname!* then append(mkffortassign(!*subprogname!*, cadr stmt), mkffortreturn()) else gentranerr('e, nil, "RETURN NOT INSIDE FUNCTION - CANNOT BE TRANSLATED", nil)$ procedure fortstmtgp stmtgp; << if car stmtgp eq 'progn then stmtgp := cdr stmtgp else stmtgp := cddr stmtgp; for each stmt in stmtgp conc fortstmt stmt >>$ procedure fortstmtnum label; begin scalar stmtnum; if not ( stmtnum := get(label, '!*stmtnum!*) ) then stmtnum := put(label, '!*stmtnum!*, genstmtnum()); return mkffortcontinue stmtnum end$ procedure fortstop stmt; mkffortstop()$ procedure fortwhile stmt; begin scalar n1, n2, result, logexp, stmtlst; logexp := cadr stmt; stmtlst := cddr stmt; n1 := genstmtnum(); n2 := genstmtnum(); !*endofloopstack!* := n2 . !*endofloopstack!*; result := append(list(n1, '! ), mkffortifgo(list('not, logexp), n2)); indentfortlevel(+1); result := append(result, for each st in stmtlst conc fortstmt st); result := append(result, mkffortgo n1); indentfortlevel(-1); result := append(result, mkffortcontinue n2); if pairp car !*endofloopstack!* then result := append(result, mkffortcontinue cadar !*endofloopstack!*); !*endofloopstack!* := cdr !*endofloopstack!*; return result end$ procedure fortwrite stmt; mkffortwrite cdr stmt$ %% %% %% FORTRAN Code Formatting Functions %% %% %% %% Statement Formatting %% procedure mkffortassign(lhs, rhs); append(append(mkforttab() . fortexp lhs, '!= . fortexp rhs), list mkfortterpri())$ symbolic procedure mkffortcall(fname, params); % Installed the switch makecalls 18/11/88 mcd. << if params then params := append(append(list '!(, for each p in insertcommas params conc fortexp p), list '!)); % If we want to generate bits of statements, then what might % appear a subroutine call may in fact be a function reference. if !*makecalls then append(append(list(mkforttab(), 'call, '! ), fortexp fname), append(params, list mkfortterpri())) else append(fortexp fname,params) >>$ procedure mkffortcontinue stmtnum; list(stmtnum, '! , mkforttab(), 'continue, mkfortterpri())$ symbolic procedure mkffortdec(type, varlist); %Ammended mcd 13/11/87 << if type equal 'scalar then type := deftype!*; if type and null (type memq !*legalforttypes!*) then gentranerr('e,type,"Illegal Fortran type. ",nil); type := type or 'dimension; % Generate the correct double precision type name - mcd 14/1/88 % if !*double then if type memq '(real real*8) then type := 'double! precision else if type memq '(implicit! real implicit! real*8) then type := 'implicit! double! precision else if type eq 'complex then type := 'complex!*16 else if type eq 'implicit! complex then type := 'implicit! complex!*16; varlist := for each v in insertcommas varlist conc fortexp v; if implicitp type then append(list(mkforttab(), type, '! , '!(), append(varlist, list('!), mkfortterpri()))) else append(list(mkforttab(), type, '! ), append(varlist,list mkfortterpri())) >>$ procedure mkffortdo(stmtnum, var, lo, hi, incr); << if onep incr then incr := nil else if incr then incr := '!, . fortexp incr; append(append(append(list(mkforttab(), !*do!*, '! , stmtnum, '! ), fortexp var), append('!= . fortexp lo, '!, . fortexp hi)), append(incr, list mkfortterpri())) >>$ procedure mkffortend; list(mkforttab(), 'end, mkfortterpri())$ procedure mkffortgo stmtnum; list(mkforttab(), 'goto, '! , stmtnum, mkfortterpri())$ procedure mkffortifgo(exp, stmtnum); append(append(list(mkforttab(), 'if, '! , '!(), fortexp exp), list('!), '! , 'goto, '! , stmtnum, mkfortterpri()))$ procedure mkffortliteral args; for each a in args conc if a eq 'tab!* then list mkforttab() else if a eq 'cr!* then list mkfortterpri() else if pairp a then fortexp a else list stripquotes a$ procedure mkffortread var; append(list(mkforttab(), 'read, '!(!*!,!*!), '! ), append(fortexp var, list mkfortterpri()))$ procedure mkffortreturn; list(mkforttab(), 'return, mkfortterpri())$ procedure mkffortstop; list(mkforttab(), 'stop, mkfortterpri())$ procedure mkffortsubprogdec(type, stype, name, params); << if params then params := append('!( . for each p in insertcommas params conc fortexp p, list '!)); if type then type := list(mkforttab(), type, '! , stype, '! ) else type := list(mkforttab(), stype, '! ); append(append(type, fortexp name), append(params, list mkfortterpri())) >>$ procedure mkffortwrite arglist; append(append(list(mkforttab(), 'write, '!(!*!,!*!), '! ), for each arg in insertcommas arglist conc fortexp arg), list mkfortterpri())$ %% Indentation Control %% procedure mkforttab; list('forttab, fortcurrind!* + 6)$ procedure indentfortlevel n; fortcurrind!* := fortcurrind!* + n * tablen!*$ procedure mkfortterpri; list 'fortterpri$ %% FORTRAN Code Formatting & Printing Functions %% fluid '(maxint); maxint := 2**31-1; symbolic procedure formatfort lst; begin scalar linelen,str; linelen := linelength 300; !*posn!* := 0; for each elt in lst do if pairp elt then lispeval elt else << if fixp elt and (elt>maxint or elt<-maxint) then elt := cdr i2rd!* elt; str:=explode2 elt; if floatp elt then if !*double then if memq('!e,str) then str:=subst('d,'!e,str) else if memq('e,str) % some LISPs use E not e then str:=subst('d,'e,str) else str:=append(str,'(d !0)) else if memq('!e,str) then str:=subst('e,'!e,str); % get the casing conventions correct if !*posn!* + length str > fortlinelen!* then fortcontline(); for each u in str do pprin2 u >>; linelength linelen end$ procedure fortcontline; << fortterpri(); pprin2 " ."; forttab !*fortcurrind!*; pprin2 " " >>$ procedure fortterpri; pterpri()$ procedure forttab n; << !*fortcurrind!* := max(min0(n, fortlinelen!* - minfortlinelen!*),6); if (n := !*fortcurrind!* - !*posn!*) > 0 then pprin2 nspaces n >>$ %% FORTRAN Template routines%% procedure procforttem; begin scalar c, linelen; linelen := linelength 150; c := procfortcomm(); while c neq !$eof!$ do if c memq '(!F !f !S !s) then << pprin2 c; c := procsubprogheading c >> else if c eq !$eol!$ then << pterpri(); c := procfortcomm() >> else if c eq '!; then c := procactive() else << pprin2 c; c := readch() >>; linelength linelen end$ procedure procfortcomm; % <col 1>C ... <cr> % % <col 1>c ... <cr> % begin scalar c; while (c := readch()) memq '(!C !c) do << pprin2 c; repeat if (c := readch()) neq !$eol!$ then pprin2 c until c eq !$eol!$; pterpri() >>; return c end$ %% This function is shared between FORTRAN and RATFOR %% procedure procsubprogheading c; % Altered to allow an active statement to be included in a subprogram % heading. This is more flexible than forbidding it as in the previous % version, although it does mean that where such a statement occurs the % value of !$!# may be incorrect. MCD 21/11/90 begin scalar lst, name, i, propname; lst := if c memq '(!F !f) then '((!U !u) (!N !n) (!C !c) (!T !t) (!I !i) (!O !o) (!N !n)) else '((!U !u) (!B !b) (!R !r) (!O !o) (!U !u) (!T !t) (!I !i) (!N !n) (!E !e)); while lst and (c := readch()) memq car lst do << pprin2 c; lst := cdr lst >>; if lst then return c; c:=flushspaces readch(); while not(seprp c or c eq '!() do << name := aconc(name, c); pprin2 c; c := readch() >>; name := intern compress name; if not !*gendecs then symtabput(name, nil, nil); propname := if gentranlang!* eq 'fortran then '!*fortranname!* else '!*ratforname!*; put('!$0, propname, name); c:=flushspaces c; if c neq '!( then return c; i := 1; pprin2 c; c := readch(); while c neq '!) and c neq '!; do << while c neq '!; and (seprp c or c eq '!,) do << if c eq !$eol!$ then pterpri() else pprin2 c; c := readch() >>; if c neq '!; then << name := list c; pprin2 c; while not (seprp (c := readch()) or c memq list('!,,'!;, '!))) do << name := aconc(name, c); pprin2 c >>; put(intern compress append(explode2 '!$, explode2 i), propname, intern compress name); i := add1 i; c:=flushspaces c; >>; >>; !$!# := sub1 i; while get(name := intern compress append(explode2 '!$, explode2 i), propname) do remprop(name, propname); return c end$ endmodule; module lsprat; %% GENTRAN LISP-to-RATFOR Translation Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Updates: % M.C. Dewar and J.H. Davenport 8 Jan 88 Double precision check added. % Entry Point: RatCode symbolic$ fluid '(!*double !*gendecs !*getdecs); switch gendecs$ fluid '(!*makecalls)$ switch makecalls$ !*makecalls := t$ % User-Accessible Global Variables % global '(minratlinelen!* ratlinelen!* !*ratcurrind!* ratcurrind!* tablen!*)$ share ratcurrind!*, minratlinelen!*, ratlinelen!*, tablen!*$ ratcurrind!* := 0$ minratlinelen!* := 40$ ratlinelen!* := 80$ !*ratcurrind!* := 0$ %current level of indentation for RATFOR code global '(deftype!* !*do!* !*notfortranfuns!* !*legalforttypes!*)$ global '(!*stdout!*)$ global '(!*posn!* !$!#)$ %% %% %% LISP-to-RATFOR Translation Functions %% %% %% put('ratfor,'formatter,'formatrat); put('ratfor,'codegen,'ratcode); put('ratfor,'proctem,'procrattem); put('ratfor,'gendecs,'ratdecs); put('ratfor,'assigner,'mkfratassign); put('ratfor,'boolean!-type,'logical); %% Control Function %% procedure ratcode forms; for each f in forms conc if atom f then ratexp f else if car f memq '(!:rd!: !:cr!: !:crn!: !:gi!:) then ratexp f else if lispstmtp f or lispstmtgpp f then if !*gendecs then begin scalar r; r := append(ratdecs symtabget('!*main!*, '!*decs!*), ratstmt f); symtabrem('!*main!*, '!*decs!*); return r end else ratstmt f else if lispdefp f then ratsubprog f else ratexp f$ %% Subprogram Translation %% symbolic procedure ratsubprog deff; begin scalar type, stype, name, params, body, lastst, r; name := cadr deff; if onep length(body := cdddr deff) and lispstmtgpp car body then << body := cdar body; if null car body then body := cdr body >>; if lispreturnp (lastst := car reverse body) then body := append(body, list '(end)) else if not lispendp lastst then body := append(body, list('(return), '(end))); type := cadr symtabget(name, name); stype := symtabget(name, '!*type!*) or ( if type or functionformp(body, name) then 'function else 'subroutine ); symtabrem(name, '!*type!*); params := symtabget(name, '!*params!*) or caddr deff; symtabrem(name, '!*params!*); if !*getdecs and null type and stype eq 'function then type := deftype!*; if type then << symtabrem(name, name); % Generate the correct double precision type name - mcd 28/1/88 % if !*double then if type memq '(real real*8) then type := 'double! precision else if type eq 'complex then type := 'complex!*16; >>; r := mkfratsubprogdec(type, stype, name, params); if !*gendecs then r := append(r, ratdecs symtabget(name, '!*decs!*)); r := append(r, for each s in body conc ratstmt s); if !*gendecs then << symtabrem(name, nil); symtabrem(name, '!*decs!*) >>; return r end$ %% Generation of Declarations %% procedure ratdecs decs; for each tl in formtypelists decs conc mkfratdec(car tl, cdr tl)$ %% Expression Translation %% procedure ratexp exp; ratexp1(exp, 0)$ procedure ratexp1(exp, wtin); if atom exp then list fortranname exp else if onep length exp then fortranname exp else if optype car exp then begin scalar wt, op, res; wt := ratforprecedence car exp; op := ratforop car exp; exp := cdr exp; if onep length exp then res := op . ratexp1(car exp, wt) else << res := ratexp1(car exp, wt); if op eq '!+ then while exp := cdr exp do << if atom car exp or caar exp neq 'minus then res := append(res, list op); res := append(res, ratexp1(car exp, wt)) >> else while exp := cdr exp do res := append(append(res, list op), ratexp1(car exp, wt)) >>; if wtin >= wt then res := insertparens res; return res end else if car exp eq 'literal then ratliteral exp else if car exp eq 'range then append(fortexp cadr exp,'!: . fortexp caddr exp) else if car exp eq '!:rd!: then begin scalar mt; integer dotpos,!:lower!-sci!:,!:upper!-sci!:; % this forces most % numbers to exponential format mt := rd!:explode exp; exp := car mt; mt := cadr mt + caddr mt - 1; exp := append(list('literal,car exp, '!.),cdr exp); if null (mt = 0) then exp := append(exp, list(if !*double then '!d else '!e,mt)) else if !*double then exp := append(exp,'(!e 0)); return ratliteral exp; end else if car exp memq '(!:cr!: !:crn!: !:gi!:) then begin scalar re,im; re := explode if smallfloatp cadr exp then cadr exp else caadr exp; re := if memq ('!e, re) then subst('d,'!e,re) else if memq ('!e, re) then subst('d,'!e,re) else if !*double then append(re,'(d 0)) else append(re,'(e 0)); im := explode if smallfloatp cddr exp then cddr exp else caddr exp; im := if memq ('!e, im) then subst('d,'!e,im) else if memq ('!e, im) then subst('d,'!e,im) else if !*double then append(im,'(d 0)) else append(im,'(e 0)); return ('!().append(re,('!,).append(im,'(!)))); end else begin scalar op, res; op := fortranname car exp; exp := cdr exp; res := ratexp1(car exp, 0); while exp := cdr exp do res := append(append(res, list '!,), ratexp1(car exp, 0)); return op . insertparens res end$ procedure ratforop op; get(op, '!*ratforop!*) or op$ put('or, '!*ratforop!*, '| )$ put('and, '!*ratforop!*, '& )$ put('not, '!*ratforop!*, '!! )$ put('equal, '!*ratforop!*, '!=!=)$ put('neq, '!*ratforop!*, '!!!=)$ put('greaterp, '!*ratforop!*, '> )$ put('geq, '!*ratforop!*, '!>!=)$ put('lessp, '!*ratforop!*, '< )$ put('leq, '!*ratforop!*, '!<!=)$ put('plus, '!*ratforop!*, '!+ )$ put('times, '!*ratforop!*, '* )$ put('quotient, '!*ratforop!*, '/ )$ put('minus, '!*ratforop!*, '!- )$ put('expt, '!*ratforop!*, '!*!*)$ procedure ratforprecedence op; get(op, '!*ratforprecedence!*) or 9$ put('or, '!*ratforprecedence!*, 1)$ put('and, '!*ratforprecedence!*, 2)$ put('not, '!*ratforprecedence!*, 3)$ put('equal, '!*ratforprecedence!*, 4)$ put('neq, '!*ratforprecedence!*, 4)$ put('greaterp, '!*ratforprecedence!*, 4)$ put('geq, '!*ratforprecedence!*, 4)$ put('lessp, '!*ratforprecedence!*, 4)$ put('leq, '!*ratforprecedence!*, 4)$ put('plus, '!*ratforprecedence!*, 5)$ put('times, '!*ratforprecedence!*, 6)$ put('quotient, '!*ratforprecedence!*, 6)$ put('minus, '!*ratforprecedence!*, 7)$ put('expt, '!*ratforprecedence!*, 8)$ %% Statement Translation %% procedure ratstmt stmt; if null stmt then nil else if lisplabelp stmt then ratstmtnum stmt else if car stmt eq 'literal then ratliteral stmt else if lispreadp stmt then ratread stmt else if lispassignp stmt then ratassign stmt else if lispprintp stmt then ratwrite stmt else if lispcondp stmt then ratif stmt else if lispbreakp stmt then ratbreak stmt else if lispgop stmt then ratgoto stmt else if lispreturnp stmt then ratreturn stmt else if lispstopp stmt then ratstop stmt else if lispendp stmt then ratend stmt else if lisprepeatp stmt then ratrepeat stmt else if lispwhilep stmt then ratwhile stmt else if lispforp stmt then ratforfor stmt else if lispstmtgpp stmt then ratstmtgp stmt else if lispdefp stmt then ratsubprog stmt else if lispcallp stmt then ratcall stmt$ procedure ratassign stmt; mkfratassign(cadr stmt, caddr stmt)$ procedure ratbreak stmt; mkfratbreak()$ procedure ratcall stmt; mkfratcall(car stmt, cdr stmt)$ procedure ratforfor stmt; begin scalar r, var, loexp, stepexp, hiexp, stmtlst; var := cadr stmt; stmt := cddr stmt; loexp := caar stmt; stepexp := cadar stmt; hiexp := caddar stmt; stmtlst := cddr stmt; r := mkfratdo(var, loexp, hiexp, stepexp); indentratlevel(+1); r := append(r, foreach st in stmtlst conc ratstmt st); indentratlevel(-1); return r end$ procedure ratend stmt; mkfratend()$ procedure ratgoto stmt; begin scalar stmtnum; stmtnum := get(cadr stmt, '!*stmtnum!*) or put(cadr stmt, '!*stmtnum!*, genstmtnum()); return mkfratgo stmtnum end$ procedure ratif stmt; begin scalar r, st; r := mkfratif caadr stmt; indentratlevel(+1); st := seqtogp cdadr stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, ratstmt st); indentratlevel(-1); stmt := cdr stmt; while (stmt := cdr stmt) and caar stmt neq t do << r := append(r, mkfratelseif caar stmt); indentratlevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, ratstmt st); indentratlevel(-1) >>; if stmt then << r := append(r, mkfratelse()); indentratlevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, ratstmt st); indentratlevel(-1) >>; return r end$ procedure ratliteral stmt; mkfratliteral cdr stmt$ procedure ratread stmt; mkfratread cadr stmt$ procedure ratrepeat stmt; begin scalar r, stmtlst, logexp; stmt := reverse cdr stmt; logexp := car stmt; stmtlst := reverse cdr stmt; r := mkfratrepeat(); indentratlevel(+1); r := append(r, foreach st in stmtlst conc ratstmt st); indentratlevel(-1); return append(r, mkfratuntil logexp) end$ procedure ratreturn stmt; if cdr stmt then mkfratreturn cadr stmt else mkfratreturn nil$ procedure ratstmtgp stmtgp; begin scalar r; if car stmtgp eq 'progn then stmtgp := cdr stmtgp else stmtgp := cddr stmtgp; r := mkfratbegingp(); indentratlevel(+1); r := append(r, for each stmt in stmtgp conc ratstmt stmt); indentratlevel(-1); return append(r, mkfratendgp()) end$ procedure ratstmtnum label; begin scalar stmtnum; stmtnum := get(label, '!*stmtnum!*) or put(label, '!*stmtnum!*, genstmtnum()); return mkfratcontinue stmtnum end$ procedure ratstop stmt; mkfratstop()$ procedure ratwhile stmt; begin scalar r, logexp, stmtlst; logexp := cadr stmt; stmtlst := cddr stmt; r := mkfratwhile logexp; indentratlevel(+1); r := append(r, foreach st in stmtlst conc ratstmt st); indentratlevel(-1); return r end$ procedure ratwrite stmt; mkfratwrite cdr stmt$ %% %% %% RATFOR Code Formatting Functions %% %% %% %% Statement Formatting %% procedure mkfratassign(lhs, rhs); append(append(mkrattab() . ratexp lhs, '!= . ratexp rhs), list mkratterpri())$ procedure mkfratbegingp; list(mkrattab(), '!{, mkratterpri())$ procedure mkfratbreak; list(mkrattab(), 'break, mkratterpri())$ procedure mkfratcall(fname, params); % Installed the switch makecalls 18/11/88 mcd. << if params then params := append(append(list '!(, for each p in insertcommas params conc ratexp p), list '!)); % If we want to generate bits of statements, then what might % appear a subroutine call may in fact be a function reference. if !*makecalls then append(append(list(mkrattab(), 'call, '! ), ratexp fname), append(params, list mkratterpri())) else append(ratexp fname,params) >>$ procedure mkfratcontinue stmtnum; list(stmtnum, '! , mkrattab(), 'continue, mkratterpri())$ symbolic procedure mkfratdec(type, varlist); %Ammended mcd 3/12/87 << if type equal 'scalar then type := deftype!*; if type and null (type memq !*legalforttypes!*) then gentranerr('e,type,"Illegal Ratfor type. ",nil); type := type or 'dimension; % Generate the correct double precision type name - mcd 14/1/88 % if !*double then if type memq '(real real*8) then type := 'double! precision else if type memq '(implicit! real implicit! real*8) then type := 'implicit! double! precision else if type eq 'complex then type := 'complex!*16 else if type eq 'implicit! complex then type := 'implicit! complex!*16; varlist := for each v in insertcommas varlist conc ratexp v; if implicitp type then append(list(mkrattab(), type, '! , '!(), append(varlist, list('!), mkratterpri()))) else append(list(mkrattab(), type, '! ), append(varlist, list mkratterpri())) >>$ procedure mkfratdo(var, lo, hi, incr); << if onep incr then incr := nil else if incr then incr := '!, . ratexp incr; append(append(append(list(mkrattab(), !*do!*, '! ), ratexp var), append('!= . ratexp lo, '!, . ratexp hi)), append(incr, list mkratterpri())) >>$ procedure mkfratelse; list(mkrattab(), 'else, mkratterpri())$ procedure mkfratelseif exp; append(append(list(mkrattab(), 'else, '! , 'if, '! , '!(), ratexp exp), list('!), mkratterpri()))$ procedure mkfratend; list(mkrattab(), 'end, mkratterpri())$ procedure mkfratendgp; list(mkrattab(), '!}, mkratterpri())$ procedure mkfratgo stmtnum; list(mkrattab(), 'goto, '! , stmtnum, mkratterpri())$ procedure mkfratif exp; append(append(list(mkrattab(), 'if, '! , '!(), ratexp exp), list('!), mkratterpri()))$ procedure mkfratliteral args; for each a in args conc if a eq 'tab!* then list mkrattab() else if a eq 'cr!* then list mkratterpri() else if pairp a then ratexp a else list stripquotes a$ procedure mkfratread var; append(list(mkrattab(), 'read, '!(!*!,!*!), '! ), append(ratexp var, list mkratterpri()))$ procedure mkfratrepeat; list(mkrattab(), 'repeat, mkratterpri())$ procedure mkfratreturn exp; if exp then append(append(list(mkrattab(), 'return, '!(), ratexp exp), list('!), mkratterpri())) else list(mkrattab(), 'return, mkratterpri())$ procedure mkfratstop; list(mkrattab(), 'stop, mkratterpri())$ procedure mkfratsubprogdec(type, stype, name, params); << if params then params := append('!( . for each p in insertcommas params conc ratexp p, list '!)); if type then type := list(mkrattab(), type, '! , stype, '! ) else type := list(mkrattab(), stype, '! ); append(append(type, ratexp name), append(params,list mkratterpri())) >>$ procedure mkfratuntil logexp; append(list(mkrattab(), 'until, '! , '!(), append(ratexp logexp, list('!), mkratterpri())))$ procedure mkfratwhile exp; append(append(list(mkrattab(), 'while, '! , '!(), ratexp exp), list('!), mkratterpri()))$ procedure mkfratwrite arglist; append(append(list(mkrattab(), 'write, '!(!*!,!*!), '! ), for each arg in insertcommas arglist conc ratexp arg), list mkratterpri())$ %% Indentation Control %% procedure mkrattab; list('rattab, ratcurrind!*)$ procedure indentratlevel n; ratcurrind!* := ratcurrind!* + n * tablen!*$ procedure mkratterpri; list 'ratterpri$ %% RATFOR Code Formatting & Printing Functions %% procedure formatrat lst; begin scalar linelen,str; linelen := linelength 300; !*posn!* := 0; for each elt in lst do if pairp elt then lispeval elt else << str:=explode2 elt; if floatp elt then if !*double then if memq('!e,str) then str:=subst('d,'!e,str) else if memq('e,str) % Some LISPs use E not e then str:=subst('d,'e,str) else str:=append(str,'(d !0)) else str:=subst('e,'!e,str); % get the casing conventions correct if !*posn!* + length str > ratlinelen!* then ratcontline(); for each u in str do pprin2 u >>; linelength linelen end$ procedure ratcontline; << ratterpri(); rattab !*ratcurrind!*; pprin2 " " >>$ procedure ratterpri; pterpri()$ procedure rattab n; << !*ratcurrind!* := min0(n, ratlinelen!* - minratlinelen!*); if (n := !*ratcurrind!* - !*posn!*) > 0 then pprin2 nspaces n >>$ %% RATFOR template processing %% procedure procrattem; begin scalar c, linelen; linelen := linelength 150; c := readch(); while c neq !$eof!$ do if c memq '(!F !f !S !s) then << pprin2 c; c := procsubprogheading c >> else if c eq '!# then c := procratcomm() else if c eq '!; then c := procactive() else if c eq !$eol!$ then << pterpri(); c := readch() >> else << pprin2 c; c := readch() >>; linelength linelen end$ procedure procratcomm; % # ... <cr> % begin scalar c; pprin2 '!#; while (c := readch()) neq !$eol!$ do pprin2 c; pterpri(); return readch() end$ endmodule; module lspc; %% GENTRAN LISP-to-C Translation Module %% %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Point: CCode symbolic$ fluid '(!*double !*gendecs)$ switch gendecs$ % User-Accessible Global Variables % global '(clinelen!* minclinelen!* !*ccurrind!* ccurrind!* tablen!*)$ share clinelen!*, minclinelen!*, ccurrind!*, tablen!*$ ccurrind!* := 0$ clinelen!* := 80$ minclinelen!* := 40$ !*ccurrind!* := 0$ %current level of indentation for C code global '(deftype!* !*c!-functions!*)$ global '(!*posn!* !$!#); !*c!-functions!* := '(sin cos tan asin acos atan atan2 sinh cosh tanh asinh acosh atanh sincos sinpi cospi tanpi asinpi acospi atanpi exp expm1 exp2 exp10 log log1p log2 log10 pow compound annuity abs fabs fmod sqrt cbrt)$ flag( '(abs),'!*int!-args!*)$ % Intrinsic function with integer arg. %% %% %% LISP-to-C Translation Functions %% %% %% put('c,'formatter,'formatc); put('c,'codegen,'ccode); put('c,'proctem,'procctem); put('c,'gendecs,'cdecs); put('c,'assigner,'mkfcassign); put('c,'boolean!-type,'!i!n!t); %% Control Function %% symbolic procedure ccode forms; for each f in forms conc if atom f then cexp f else if car f memq '(!:rd!: !:cr!: !:crn!: !:gi!:) then cexp f else if lispstmtp f or lispstmtgpp f then if !*gendecs then begin scalar r; r := append(cdecs symtabget('!*main!*, '!*decs!*), cstmt f); symtabrem('!*main!*, '!*decs!*); return r end else cstmt f else if lispdefp f then cproc f else cexp f$ %% Procedure Translation %% symbolic procedure cproc deff; % Type details amended mcd 3/3/88 begin scalar type, name, params, paramtypes, vartypes, body, r; name := cadr deff; if onep length (body := cdddr deff) and lispstmtgpp car body then << body := cdar body; if null car body then body := cdr body >>; if (type := symtabget(name, name)) then << type := cadr type; % Convert reduce types to c types if type equal 'real then type := '!f!l!o!a!t else if type equal 'integer then type := '!i!n!t; if !*double then if type equal '!f!l!o!a!t then type := '!d!o!u!b!l!e else if type equal '!i!n!t then type := '!l!o!n!g; symtabrem(name, name) >>; params := symtabget(name, '!*params!*) or caddr deff; symtabrem(name, '!*params!*); for each dec in symtabget(name, '!*decs!*) do if car dec memq params then paramtypes := append(paramtypes, list dec) else vartypes := append(vartypes, list dec); r := append( append( mkfcprocdec(type, name, params), cdecs paramtypes ), mkfcbegingp() ); indentclevel(+1); if !*gendecs then r := append(r, cdecs vartypes); r := append(r, for each s in body conc cstmt s); indentclevel(-1); r := append(r, mkfcendgp()); if !*gendecs then << symtabrem(name, nil); symtabrem(name, '!*decs!*) >>; return r end$ %% Generation of Declarations %% symbolic procedure cdecs decs; for each tl in formtypelists decs conc mkfcdec(car tl, cdr tl)$ %% Expression Translation %% symbolic procedure cexp exp; cexp1(exp, 0)$ symbolic procedure cexp1(exp, wtin); if atom exp then list cname exp else if onep length exp then append(cname exp, insertparens(())) else if car exp eq 'expt then if caddr exp = 2 then cexp1 (list('times, cadr exp, cadr exp), wtin) else if caddr exp = 3 then cexp1 (list('times, cadr exp, cadr exp, cadr exp), wtin) else if caddr exp = 4 then cexp1(list('times,cadr exp,cadr exp,cadr exp,cadr exp),wtin) else if caddr exp = '(quotient 1 2) then cexp1 (list('sqrt, cadr exp), wtin) else cexp1 ('pow . cdr exp,wtin) else if optype car exp then begin scalar wt, op, res; wt := cprecedence car exp; op := cop car exp; exp := cdr exp; if onep length exp then res := op . cexp1(car exp, wt) else << res := cexp1(car exp, wt); if op eq '!+ then while exp := cdr exp do << if atom car exp or caar exp neq 'minus then res := append(res, list op); res := append(res, cexp1(car exp, wt)) >> else while exp := cdr exp do res := append(append(res, list op), cexp1(car exp, wt)) >>; if wtin >= wt then res := insertparens res; return res end else if car exp eq 'literal then cliteral exp else if car exp eq 'range then if cadr exp = 0 then cexp caddr exp else gentranerr('e,exp, "C does not support non-zero lower bounds",nil) else if car exp eq '!:rd!: then if smallfloatp cdr exp then list cdr exp else begin scalar mt; % Print bigfloats more naturally. integer dotpos,!:lower!-sci!:,!:upper!-sci!:; % This forces most numbers to exponential format. mt := rd!:explode exp; exp := car mt; mt := cadr mt + caddr mt - 1; exp := append(list('literal,car exp, '!.),cdr exp); if null (mt = 0) then exp := append(exp, list('!e,mt)); return cliteral exp; end else if car exp memq '(!:cr!: !:crn!: !:gi!:) then gentranerr('e,exp,"C doesn't support complex data type",nil) else if arrayeltp exp then cname car exp . foreach s in cdr exp conc insertbrackets cexp1(s, 0) else if memq(car exp,!*c!-functions!*) then begin scalar op,res,dblp; dblp := not get(car exp,'!*int!-args!*); op := cname car exp; res := '!( . list op ; while exp := cdr exp do << op := cexp1(car exp, 0); if dblp and not (is!-c!-float(op) or is!-c!-float(car exp)) then op := if fixp car op then (float car op) . (cdr op) else append(list('!(,'!d!o!u!b!l!e,'!),'!(), append(op,list '!))); res := if cdr exp then append('!, . reversip op,res) else append(reversip op,res); >>; return reversip ( '!) . res ) end else if cfunctcallp exp then begin scalar op, res; op := cname car exp; exp := cdr exp; res := '!( . cexp1(car exp, 0); while exp := cdr exp do res := append(res, '!, . cexp1(car exp, 0)); return op . append(res, list('!)) ) end else begin scalar op, res; op := cname car exp; exp := cdr exp; res := append( '![ . cexp1(car exp, 0),list('!]) ); % Changed to generate proper C arrays - mcd 25/9/89 while exp := cdr exp do res := append(res, append('![ . cexp1(car exp, 0) ,list('!]) ) ); return op . res end$ symbolic procedure string2id str; intern compress reversip cdr reversip cdr explode str$ symbolic procedure is!-c!-float u; % Returns T if u is a float or a list whose car is an intrinsic % function name with a floating point result. floatp(u) or (idp u and declared!-as!-float(u) ) or pairp(u) and (car u eq '!:rd!: or stringp car u and memq(string2id car u,!*c!-functions!*) and not flagp(string2id car u, '!*int!-args!*) or declared!-as!-float(car u) )$ symbolic procedure cfunctcallp exp; symtabget(car exp,'!*type!*)$ symbolic procedure cop op; get(op, '!*cop!*) or op$ put('or, '!*cop!*, '!|!|)$ put('and, '!*cop!*, '!&!&)$ put('not, '!*cop!*, '!! )$ put('equal, '!*cop!*, '!=!=)$ put('neq, '!*cop!*, '!!!=)$ put('greaterp, '!*cop!*, '> )$ put('geq, '!*cop!*, '!>!=)$ put('lessp, '!*cop!*, '< )$ put('leq, '!*cop!*, '!<!=)$ put('plus, '!*cop!*, '!+ )$ put('times, '!*cop!*, '* )$ put('quotient, '!*cop!*, '/ )$ put('minus, '!*cop!*, '!- )$ symbolic procedure cname a; if stringp a then stringtoatom a % convert a to atom containing "'s else if memq(a,!*c!-functions!*) then string!-downcase a else get(a, '!*cname!*) or a$ put(t, '!*cname!*, 1)$ put(nil, '!*cname!*, 0)$ symbolic procedure cprecedence op; get(op, '!*cprecedence!*) or 8$ put('or, '!*cprecedence!*, 1)$ put('and, '!*cprecedence!*, 2)$ put('equal, '!*cprecedence!*, 3)$ put('neq, '!*cprecedence!*, 3)$ put('greaterp, '!*cprecedence!*, 4)$ put('geq, '!*cprecedence!*, 4)$ put('lessp, '!*cprecedence!*, 4)$ put('leq, '!*cprecedence!*, 4)$ put('plus, '!*cprecedence!*, 5)$ put('times, '!*cprecedence!*, 6)$ put('quotient, '!*cprecedence!*, 6)$ put('not, '!*cprecedence!*, 7)$ put('minus, '!*cprecedence!*, 7)$ %% Statement Translation %% symbolic procedure cstmt stmt; if null stmt then nil else if lisplabelp stmt then clabel stmt else if car stmt eq 'literal then cliteral stmt else if lispassignp stmt then cassign stmt else if lispcondp stmt then cif stmt else if lispbreakp stmt then cbreak stmt else if lispgop stmt then cgoto stmt else if lispreturnp stmt then creturn stmt else if lispstopp stmt then cexit stmt else if lisprepeatp stmt then crepeat stmt else if lispwhilep stmt then cwhile stmt else if lispforp stmt then cfor stmt else if lispstmtgpp stmt then cstmtgp stmt else if lispdefp stmt then cproc stmt else cexpstmt stmt$ symbolic procedure cassign stmt; mkfcassign(cadr stmt, caddr stmt)$ symbolic procedure cbreak stmt; mkfcbreak()$ symbolic procedure cexit stmt; mkfcexit()$ symbolic procedure cexpstmt exp; append(mkctab() . cexp exp, list('!;, mkcterpri()))$ symbolic procedure cfor stmt; begin scalar r, var, loexp, stepexp, hiexp, stmtlst; var := cadr stmt; stmt := cddr stmt; loexp := caar stmt; stepexp := cadar stmt; hiexp := caddar stmt; stmtlst := cddr stmt; r := mkfcfor(var, loexp, list(if (numberp stepexp and stepexp < 0) or eqcar(stepexp,'minus) then 'geq else 'leq, var, hiexp), var, list('plus, var, stepexp)); indentclevel(+1); r := append(r, foreach st in stmtlst conc cstmt st); indentclevel(-1); return r end$ symbolic procedure cgoto stmt; mkfcgo cadr stmt$ symbolic procedure cif stmt; begin scalar r, st; r := mkfcif caadr stmt; indentclevel(+1); st := seqtogp cdadr stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, cstmt st); indentclevel(-1); stmt := cdr stmt; while (stmt := cdr stmt) and caar stmt neq t do << r := append(r, mkfcelseif caar stmt); indentclevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, cstmt st); indentclevel(-1) >>; if stmt then << r := append(r, mkfcelse()); indentclevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, cstmt st); indentclevel(-1) >>; return r end$ symbolic procedure clabel label; mkfclabel label$ symbolic procedure cliteral stmt; mkfcliteral cdr stmt$ symbolic procedure crepeat stmt; begin scalar r, stmtlst, logexp; stmt := reverse cdr stmt; logexp := car stmt; stmtlst := reverse cdr stmt; r := mkfcdo(); indentclevel(+1); r := append(r, foreach st in stmtlst conc cstmt st); indentclevel(-1); return append(r, mkfcdowhile list('not, logexp)) end$ symbolic procedure creturn stmt; if cdr stmt then mkfcreturn cadr stmt else mkfcreturn nil$ symbolic procedure cstmtgp stmtgp; begin scalar r; if car stmtgp eq 'progn then stmtgp := cdr stmtgp else stmtgp :=cddr stmtgp; r := mkfcbegingp(); indentclevel(+1); r := append(r, for each stmt in stmtgp conc cstmt stmt); indentclevel(-1); return append(r, mkfcendgp()) end$ symbolic procedure cwhile stmt; begin scalar r, logexp, stmtlst; logexp := cadr stmt; stmtlst := cddr stmt; r := mkfcwhile logexp; indentclevel(+1); r := append(r, foreach st in stmtlst conc cstmt st); indentclevel(-1); return r end$ %% %% %% C Code Formatting Functions %% %% %% %% Statement Formatting %% symbolic procedure mkfcassign(lhs, rhs); begin scalar st; if length rhs = 3 and lhs member rhs then begin scalar op, exp1, exp2; op := car rhs; exp1 := cadr rhs; exp2 := caddr rhs; if op = 'plus then if onep exp1 or onep exp2 then st := ('!+!+ . cexp lhs) else if exp1 member '(-1 (minus 1)) or exp2 member '(-1 (minus 1)) then st := ('!-!- . cexp lhs) else if eqcar(exp1, 'minus) then st := append(cexp lhs, '!-!= . cexp cadr exp1) else if eqcar(exp2, 'minus) then st := append(cexp lhs, '!-!= . cexp cadr exp2) else if exp1 = lhs then st := append(cexp lhs, '!+!= . cexp exp2) else st := append(cexp lhs, '!+!= . cexp exp1) else if op = 'difference and onep exp2 then st := ('!-!- . cexp lhs) else if op = 'difference and exp1 = lhs then st := append(cexp lhs, '!-!= . cexp exp2) else if op = 'times and exp1 = lhs then st := append(cexp lhs, '!*!= . cexp exp2) else if op = 'times then st := append(cexp lhs, '!*!= . cexp exp1) else if op = 'quotient and exp1 = lhs then st := append(cexp lhs, '!/!= . cexp exp2) else st := append(cexp lhs, '!= . cexp rhs) end else st := append(cexp lhs, '!= . cexp rhs); return append(mkctab() . st, list('!;, mkcterpri())) end$ symbolic procedure mkfcbegingp; list(mkctab(), '!{, mkcterpri())$ symbolic procedure mkfcbreak; list(mkctab(), '!b!r!e!a!k, '!;, mkcterpri())$ symbolic procedure mkfcdec(type, varlist); %Amended mcd 13/11/87,3/3/88 << if type equal 'scalar then type := deftype!*; % Convert Reduce types to C types. if type equal 'real then type := '!f!l!o!a!t else if type equal 'integer then type := '!i!n!t; % Deal with precision. if !*double then if type equal '!f!l!o!a!t then type := '!d!o!u!b!l!e else if type equal '!i!n!t then type := '!l!o!n!g; varlist := for each v in varlist collect if atom v then v else car v . for each dim in cdr v collect if dim eq 'times then '! % else if numberp dim then add1 dim else if eqcar (dim, 'range) and cadr dim = 0 then add1 caddr dim else gentranerr('e,dim,"Not C dimension",nil); append(mkctab() . type . '! . for each v in insertcommas varlist conc cexp v, list('!;, mkcterpri())) >>$ symbolic procedure mkfcdo; list(mkctab(), '!d!o, mkcterpri())$ symbolic procedure mkfcdowhile exp; append(append(list(mkctab(), '!w!h!i!l!e, '! , '!(), cexp exp), list('!), '!;, mkcterpri()))$ symbolic procedure mkfcelse; list(mkctab(), '!e!l!s!e, mkcterpri())$ symbolic procedure mkfcelseif exp; append(append(list(mkctab(), '!e!l!s!e, '! , '!i!f, '! , '!(), cexp exp), list('!), mkcterpri()))$ symbolic procedure mkfcendgp; list(mkctab(), '!}, mkcterpri())$ symbolic procedure mkfcexit; list(mkctab(), '!e!x!i!t, '!(, 0, '!), '!;, mkcterpri())$ symbolic procedure mkfcfor(var1, lo, cond, var2, nextexp); << if var1 then var1 := append(cexp var1, '!= . cexp lo); if cond then cond := cexp cond; if var2 then << var2 := cdr mkfcassign(var2, nextexp); var2 := reverse cddr reverse var2 >>; append(append(append(list(mkctab(), '!f!o!r, '! , '!(), var1), '!; . cond), append('!; . var2, list('!), mkcterpri()))) >>$ symbolic procedure mkfcgo label; list(mkctab(), '!g!o!t!o, '! , label, '!;, mkcterpri())$ symbolic procedure mkfcif exp; append(append(list(mkctab(), '!i!f, '! , '!(), cexp exp), list('!), mkcterpri()))$ symbolic procedure mkfclabel label; list(label, '!:, mkcterpri())$ symbolic procedure mkfcliteral args; for each a in args conc if a eq 'tab!* then list mkctab() else if a eq 'cr!* then list mkcterpri() else if pairp a then cexp a else list stripquotes a$ symbolic procedure mkfcprocdec(type, name, params); << params := append('!( . for each p in insertcommas params conc cexp p, list '!)); if type then append(mkctab() . type . '! . cexp name, append(params,list mkcterpri())) else append(mkctab() . cexp name, append(params, list mkcterpri())) >>$ symbolic procedure mkfcreturn exp; if exp then append(append(list(mkctab(), '!r!e!t!u!r!n, '!(), cexp exp), list('!), '!;, mkcterpri())) else list(mkctab(), '!r!e!t!u!r!n, '!;, mkcterpri())$ symbolic procedure mkfcwhile exp; append(append(list(mkctab(), '!w!h!i!l!e, '! , '!(), cexp exp), list('!), mkcterpri()))$ %% Indentation Control %% symbolic procedure mkctab; list('ctab, ccurrind!*)$ symbolic procedure indentclevel n; ccurrind!* := ccurrind!* + n * tablen!*$ symbolic procedure mkcterpri; list 'cterpri$ %% %% %% Misc. Functions %% %% %% symbolic procedure insertbrackets exp; '![ . append(exp, list '!])$ %% C Code Formatting & Printing Functions %% symbolic procedure formatc lst; begin scalar linelen; linelen := linelength 300; !*posn!* := 0; for each elt in lst do if pairp elt then lispeval elt else << if !*posn!* + length explode2 elt > clinelen!* then ccontline(); pprin2 elt >>; linelength linelen end$ symbolic procedure ccontline; << cterpri(); ctab !*ccurrind!*; pprin2 " " >>$ symbolic procedure cterpri; pterpri()$ symbolic procedure ctab n; << !*ccurrind!* := min0(n, clinelen!* - minclinelen!*); if (n := !*ccurrind!* - !*posn!*) > 0 then pprin2 nspaces n >>$ %% C template processing %% symbolic procedure procctem; begin scalar c, linelen; linelen := linelength 150; c := readch(); if c eq '!# then c := procc!#line c; while c neq !$eof!$ do if c eq !$eol!$ then c := procc!#line c else if c eq '!/ then c := procccomm() else if c eq '!; then c := procactive() else c := proccheader(c); linelength linelen end$ symbolic procedure procc!#line c; % # ... <cr> % begin if c eq !$eol!$ then << pterpri(); c := readch() >>; if c eq '!# then repeat << pprin2 c; c := readch() >> until c eq !$eol!$; return c end$ symbolic procedure procccomm; % /* ... */ % begin scalar c; pprin2 '!/; c := readch(); if c eq '!* then << pprin2 c; c := readch(); repeat << while c neq '!* do << if c eq !$eol!$ then pterpri() else pprin2 c; c := readch() >>; pprin2 c; c := readch() >> until c eq '!/; pprin2 c; c := readch() >>; return c end$ symbolic procedure proccheader c; begin scalar name, i; while seprp c and c neq !$eol!$ do << pprin2 c; c := readch() >>; while not(seprp c or c memq list('!/, '!;, '!()) do << name := aconc(name, c); pprin2 c; c := readch() >>; if c memq list(!$eol!$, '!/, '!;) then return c; while seprp c and c neq !$eol!$ do << pprin2 c; c := readch() >>; if c neq '!( then return c; name := intern compress name; if not !*gendecs then symtabput(name, nil, nil); put('!$0, '!*cname!*, name); pprin2 c; i := 1; c := readch(); while c neq '!) do << while seprp c or c eq '!, do << if c eq !$eol!$ then pterpri() else pprin2 c; c := readch() >>; name := list c; pprin2 c; while not(seprp (c := readch()) or c memq list('!,, '!))) do << name := aconc(name, c); pprin2 c >>; put(intern compress append(explode2 '!$, explode2 i), '!*cname!*, intern compress name); i := add1 i; c:=flushspaces c >>; !$!# := sub1 i; while get(name := intern compress append(explode2 '!$, explode2 i), '!*cname!*) do remprop(name, '!*cname!*); return proccfunction c end$ symbolic procedure proccfunction c; begin scalar !{!}count; while c neq '!{ do if c eq '!/ then c := procccomm() else if c eq '!; then c := procactive() else if c eq !$eol!$ then << pterpri(); c := readch() >> else << pprin2 c; c := readch() >>; pprin2 c; !{!}count := 1; c := readch(); while !{!}count > 0 do if c eq '!{ then << !{!}count := add1 !{!}count; pprin2 c; c := readch() >> else if c eq '!} then << !{!}count := sub1 !{!}count; pprin2 c; c := readch() >> else if c eq '!/ then c := procccomm() else if c eq '!; then c := procactive() else if c eq !$eol!$ then << pterpri(); c := readch() >> else << pprin2 c; c := readch() >>; return c end$ endmodule; module lsppasc; %% GENTRAN LISP-to-PASCAL Translation Module %% %% Author: John Fitch and James Davenport after Barbara L. Gates %% %% November 1987 %% % Entry Point: PASCCode symbolic$ fluid '(!*gendecs)$ switch gendecs$ % User-Accessible Global Variables % global '(pasclinelen!* minpasclinelen!* !*pasccurrind!* pasccurrind!* tablen!* pascfuncname!*)$ share pasclinelen!*, minpasclinelen!*, pasccurrind!*, tablen!*, pascfuncname!*$ pasccurrind!* := 0$ minpasclinelen!* := 40$ pasclinelen!* := 70$ !*pasccurrind!* := 0$ %current level of indentation for PASCAL code global '(!*do!* !*for!*)$ global '(!*posn!* !$!#)$ %% %% %% LISP-to-PASCAL Translation Functions %% %% %% put('pascal,'formatter,'formatpasc); put('pascal,'codegen,'pasccode); put('pascal,'proctem,'procpasctem); put('pascal,'gendecs,'pascdecs); put('pascal,'assigner,'mkfpascassign); put('pascal,'boolean!-type,'boolean); symbolic procedure pasc!-symtabput(name,type,value); % Like symtabput, but indirects through TYPE declarations. % has to be recursive begin scalar basetype, origtype, wastypedecl; basetype:=car value; if basetype = 'type then << wastypedecl:=t; value:=cdr value; basetype:=car value >>; origtype:=symtabget(name,basetype) or symtabget('!*main!*,basetype); if pairp origtype then origtype:=cdr origtype; % strip off name; if pairp origtype and car origtype = 'type then value:= (cadr origtype). append(cdr value,cddr origtype); if wastypedecl then symtabput(name,type,'type . value) else symtabput(name,type,value); end; %% Control Function %% procedure pasccode forms; for each f in forms conc if atom f then pascexp f else if car f memq '(!:rd!: !:cr!: !:crn!: !:gi!:) then pascexp f else if lispstmtp f or lispstmtgpp f then if !*gendecs then begin scalar r; r := append(pascdecs symtabget('!*main!*, '!*decs!*), pascstmt f); symtabrem('!*main!*, '!*decs!*); return r end else pascstmt f else if lispdefp f then pascproc f else pascexp f$ %% Procedure Translation %% procedure pascproc deff; begin scalar type, name, params, paramtypes, vartypes, body, r; name := cadr deff; if onep length (body := cdddr deff) and lispstmtgpp car body then << body := cdar body; if null car body then body := cdr body >>; if (type := symtabget(name, name)) then << type := cadr type; symtabrem(name, name) >>; params := symtabget(name, '!*params!*) or caddr deff; symtabrem(name, '!*params!*); for each dec in symtabget(name, '!*decs!*) do if car dec memq params then paramtypes := append(paramtypes, list dec) else if cadr dec neq 'type then vartypes := append(vartypes, list dec); r := mkfpascprocdec(type, name, params, paramtypes); if !*gendecs then << r:= append(r,list(mkpasctab(),'label,mkpascterpri())); indentpasclevel(+1); r:= append(r,list(mkpasctab(),'99999, '!;, mkpascterpri())); indentpasclevel(-1); r := append(r, pascdecs vartypes) >>; r:= append(r, mkfpascbegingp() ); indentpasclevel(+1); r := append(r, for each s in body conc pascstmt s); indentpasclevel(-1); r:=append(r,list(mkpasctab(), 99999, '!:, mkpascterpri())); r := append(r, mkfpascendgp()); if !*gendecs then << symtabrem(name, nil); symtabrem(name, '!*decs!*) >>; return r end$ %% Generation of Declarations %% procedure pascdecs decs; begin scalar r; decs:=for each r in decs conc if cadr r eq 'type then nil else list r; if decs then << indentpasclevel(+1); decs:=for each tl in formtypelists decs conc mkfpascdec(car tl, cdr tl); indentpasclevel(-1); r:=append(list(mkpasctab(),'var, mkpascterpri()), decs) >>; return r end$ %% Expression Translation %% procedure pascexp exp; pascexp1(exp, 0)$ procedure pascexp1(exp, wtin); if atom exp then list pascname exp else if onep length exp then pascname exp else if optype car exp then begin scalar wt, op, res; wt := pascprecedence car exp; op := pascop car exp; exp := cdr exp; if onep length exp then res := op . pascexp1(car exp, wt) else << res := pascexp1(car exp, wt); if op eq '!+ then while exp := cdr exp do << if atom car exp or caar exp neq 'minus then res := append(res, list op); res := append(res, pascexp1(car exp, wt)) >> else while exp := cdr exp do res := append(append(res, list op), pascexp1(car exp, wt)) >>; if wtin >= wt then res := insertparens res; return res end else if car exp eq 'literal then pascliteral exp else if car exp eq 'range then append(pascexp cadr exp, '!.!. . pascexp caddr exp) else if car exp eq '!:rd!: then begin scalar mt; integer dotpos,!:lower!-sci!:,!:upper!-sci!:; % this forces most % numbers to exponential format mt := rd!:explode exp; exp := car mt; mt := cadr mt + caddr mt - 1; exp := append(list('literal,car exp, '!.),cdr exp); if null (mt = 0) then exp := append(exp, list('!e,mt)); return pascliteral exp; end else if car exp memq '(!:cr!: !:crn!: !:gi!:) then gentranerr('e,exp,"Pascal doesn't support complex data",nil) else if arrayeltp exp then if cddr exp and ((caddr exp) equal '!.!.) then pascname car exp . pascinsertbrackets cdr exp else pascname car exp . pascinsertbrackets cdr foreach s in cdr exp conc '!, . pascexp1(s, 0) else begin scalar op, res; op := pascname car exp; exp := cdr exp; res := pascexp1(car exp, 0); while exp := cdr exp do res := append(append(res, list '!,), pascexp1(car exp, 0)); return op . insertparens res end$ procedure pascop op; get(op, '!*pascop!*) or op$ put('or, '!*pascop!*, 'or )$ put('and, '!*pascop!*, 'and )$ put('not, '!*pascop!*, 'not )$ put('equal, '!*pascop!*, '!= )$ put('neq, '!*pascop!*, '!<!>)$ put('greaterp, '!*pascop!*, '!> )$ put('geq, '!*pascop!*, '!>!=)$ put('lessp, '!*pascop!*, '!< )$ put('leq, '!*pascop!*, '!<!=)$ put('plus, '!*pascop!*, '!+ )$ put('times, '!*pascop!*, '!* )$ put('quotient, '!*pascop!*, '!/ )$ put('minus, '!*pascop!*, '!- )$ put('expt, '!*pascop!*, '!*!*)$ procedure pascname a; if stringp a then stringtopascatom a % convert a to atom containing ''s else get(a, '!*pascname!*) or a$ procedure stringtopascatom a; intern compress foreach c in append('!' . explode2 a, list '!') conc list('!!, c)$ put(t, '!*pascname!*, 'true)$ put(nil, '!*pascname!*, 'false)$ procedure pascprecedence op; get(op, '!*pascprecedence!*) or 9$ put('or, '!*pascprecedence!*, 1)$ put('and, '!*pascprecedence!*, 2)$ put('equal, '!*pascprecedence!*, 3)$ put('neq, '!*pascprecedence!*, 3)$ put('greaterp, '!*pascprecedence!*, 4)$ put('geq, '!*pascprecedence!*, 4)$ put('lessp, '!*pascprecedence!*, 4)$ put('leq, '!*pascprecedence!*, 4)$ put('plus, '!*pascprecedence!*, 5)$ put('times, '!*pascprecedence!*, 6)$ put('quotient, '!*pascprecedence!*, 6)$ put('expt, '!*pascprecedence!*, 7)$ put('not, '!*pascprecedence!*, 8)$ put('minus, '!*pascprecedence!*, 8)$ %% Statement Translation %% procedure pascstmt stmt; if null stmt then nil else if lisplabelp stmt then pasclabel stmt % Are there labels? else if car stmt eq 'literal then pascliteral stmt else if lispassignp stmt then pascassign stmt else if lispcondp stmt then pascif stmt else if lispgop stmt then % Is there a go? pascgoto stmt else if lispreturnp stmt then pascreturn stmt else if lispstopp stmt then pascstop stmt else if lisprepeatp stmt then pascrepeat stmt else if lispwhilep stmt then pascwhile stmt else if lispforp stmt then pascfor stmt else if lispstmtgpp stmt then pascstmtgp stmt else if lispdefp stmt then pascproc stmt else pascexpstmt stmt$ procedure pascassign stmt; mkfpascassign(cadr stmt, caddr stmt)$ procedure pascstop stmt; mkfpascstop()$ procedure pascexpstmt exp; append(mkpasctab() . pascexp exp, list('!;, mkpascterpri()))$ procedure pascfor stmt; begin scalar r, variable, loexp, stepexp, hiexp, stmtlst; variable := cadr stmt; stmt := cddr stmt; loexp := caar stmt; stepexp := cadar stmt; hiexp := caddar stmt; stmtlst := cddr stmt; r := mkfpascfor(variable, loexp, hiexp, stepexp); indentpasclevel(+1); %% ?? Should not the stmtlst have only one member?? r := append(r, foreach st in stmtlst conc pascstmt st); indentpasclevel(-1); return r end$ procedure pascgoto stmt; begin scalar stmtnum; if not ( stmtnum := get(cadr stmt, '!*stmtnum!*) ) then stmtnum := put(cadr stmt, '!*stmtnum!*, genstmtnum()); return mkfpascgo stmtnum end$ procedure pascif stmt; begin scalar r, st; r := mkfpascif caadr stmt; indentpasclevel(+1); st := seqtogp cdadr stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, pascstmt st); indentpasclevel(-1); stmt := cddr stmt; if stmt then << r := append(r, mkfpascelse()); indentpasclevel(+1); st := seqtogp cdar stmt; if eqcar(st, 'cond) and length st=2 then st := mkstmtgp(0, list st); r := append(r, pascstmt st); indentpasclevel(-1) >>; return r end$ procedure pasclabel label; mkfpasclabel label$ procedure pascliteral stmt; mkfpascliteral cdr stmt$ procedure pascrepeat stmt; begin scalar r, stmtlst, logexp; stmt := reverse cdr stmt; logexp := car stmt; stmtlst := reverse cdr stmt; r := mkfpascrepeat(); indentpasclevel(+1); r := append(r, foreach st in stmtlst conc pascstmt st); r:=removefinalsemicolon(r); % Remove final semicolon indentpasclevel(-1); return append(r, mkfpascuntil logexp) end$ procedure pascreturn stmt; if cdr stmt then begin scalar r; r := mkfpascbegingp(); indentpasclevel(+1); r := append(r, mkfpascassign(pascfuncname!*, cadr stmt)); r := append(r, mkfpascreturn()); r := removefinalsemicolon(r); % Remove final semicolon indentpasclevel(-1); return append(r, mkfpascendgp()) end else mkfpascreturn()$ procedure pascstmtgp stmtgp; begin scalar r; if car stmtgp eq 'progn then stmtgp := cdr stmtgp else stmtgp :=cddr stmtgp; r := mkfpascbegingp(); indentpasclevel(+1); r := append(r, for each stmt in stmtgp conc pascstmt stmt); r:=removefinalsemicolon(r); % Remove final semicolon indentpasclevel(-1); return append(r, mkfpascendgp()) end$ procedure pascwhile stmt; begin scalar r, logexp, stmtlst; logexp := cadr stmt; stmtlst := cddr stmt; r := mkfpascwhile logexp; indentpasclevel(+1); r := append(r, foreach st in stmtlst conc pascstmt st); indentpasclevel(-1); return r end$ procedure removefinalsemicolon r; begin scalar rr; r:=reversip r; if car r eq '!; then return reversip cdr r; if not ('!; memq r) then return reversip r; rr:=r; while not (cadr rr eq '!;) do << rr := cdr rr >>; rplacd(rr, cddr rr); return reversip r end$ %% %% %% Pascal Code Formatting Functions %% %% %% %% Statement Formatting %% procedure mkfpascassign(lhs, rhs); begin scalar st; st := append(pascexp lhs, '!:!= . pascexp rhs); return append(mkpasctab() . st, list('!;, mkpascterpri())) end$ procedure mkfpascbegingp; list(mkpasctab(), 'begin, mkpascterpri())$ symbolic procedure mkfpascdec (type, varlist); begin scalar simplet, arrayt; varlist := for each v in varlist do if atom v then simplet := v . simplet else arrayt := (car v . cdr for each dim in cdr v conc if eqcar(dim,'range) then list ('!, , cadr dim, '!.!., caddr dim ) else list ('!, , 0, '!.!., dim )) . arrayt; return append(if simplet then append(mkpasctab() . for each v in insertcommas simplet conc pascexp v, (list('!:! , type, '!;, mkpascterpri()))), for each v in arrayt conc append(mkpasctab() . car pascexp car v. '!:! . 'array . insertbrackets cdr v, list('! of! , type, '!;, mkpascterpri()))) end; procedure mkfpascdo; list(mkpasctab(), !*do!*, mkpascterpri())$ procedure mkfpascuntil exp; append(append(list(mkpasctab(), 'until, '! ), pascexp exp), list('!;, mkpascterpri() )); procedure mkfpascelse; list(mkpasctab(), 'else, mkpascterpri())$ procedure mkfpascendgp; list(mkpasctab(), 'end, '!;, mkpascterpri())$ procedure mkfpascstop; list(mkpasctab(), 'svr, '!(, '!0, '!), '!;, mkpascterpri())$ procedure mkfpascfor(var1, lo, hi, stepexp); << stepexp := if stepexp = 1 then list('! , 'to, '! ) else if (stepexp = -1) or (stepexp = '(minus 1)) then list('! , 'downto, '! ) else list('error); hi:=append(pascexp hi,list('! , !*do!*, mkpascterpri())); hi:=append(pascexp lo, nconc(stepexp, hi)); append(list(mkpasctab(), !*for!*, '! , var1, '!:!=), hi) >>$ procedure mkfpascgo label; list(mkpasctab(), 'goto, '! , label, '!;, mkpascterpri())$ procedure mkfpascif exp; append(append(list(mkpasctab(), 'if, '! ), pascexp exp), list('! , 'then, mkpascterpri()))$ procedure mkfpasclabel label; list(label, '!:, mkpascterpri())$ procedure mkfpascliteral args; for each a in args conc if a eq 'tab!* then list mkpasctab() else if a eq 'cr!* then list mkpascterpri() else if pairp a then pascexp a else list stripquotes a$ procedure mkfpascprocdec(type, name, params, paramtypes); << pascfuncname!* := name; params := append('!( . cdr for each p in params conc '!, . pascdum(p, paramtypes), list '!)); if type then append(mkpasctab() . 'function . '! . pascexp name, append(params,list( '!:, type, '!;, mkpascterpri()))) else append(mkpasctab() . 'procedure . '! . pascexp name, append(params, list('!;, mkpascterpri()))) >>$ symbolic procedure pascdum (p,types); begin scalar type; type := pascgettype(p,types); type := if atom type then list type else if null cdr type then type else append('array . insertbrackets cdr for each dim in cdr type conc if eqcar(dim,'range) then list('!,,cadr dim,'!.!.,caddr dim) else list ('!, , 0, '!.!., dim ), list ('! of! , car type)); return p . '!: . type end; symbolic procedure pascgettype(p,types); if null types then 'default else if p memq car types then cdr car types else pascgettype(p,cdr types); procedure mkfpascrepeat; list(mkpasctab(), 'repeat, mkpascterpri())$ procedure mkfpascreturn; list(mkpasctab(), 'goto, '! , 99999, '!;, '!{return!}, mkpascterpri())$ procedure mkfpascwhile exp; append(append(list(mkpasctab(), 'while, '! , '!(), pascexp exp), list('!), mkpascterpri()))$ %% Indentation Control %% procedure mkpasctab; list('pasctab, pasccurrind!*)$ procedure indentpasclevel n; pasccurrind!* := pasccurrind!* + n * tablen!*$ procedure mkpascterpri; list 'pascterpri$ %% %% %% Misc. Functions %% %% %% procedure pascinsertbrackets exp; '![ . append(exp, list '!] )$ %% PASCAL Code Formatting & Printing Functions %% procedure formatpasc lst; begin scalar linelen; linelen := linelength 300; !*posn!* := 0; for each elt in lst do if pairp elt then lispeval elt else << if !*posn!* + length explode2 elt > pasclinelen!* then pasccontline(); pprin2 elt >>; linelength linelen end$ procedure pasccontline; << pascterpri(); pasctab !*pasccurrind!*; pprin2 " " >>$ procedure pascterpri; pterpri()$ procedure pasctab n; << !*pasccurrind!* := min0(n, pasclinelen!* - minpasclinelen!*); if (n := !*pasccurrind!* - !*posn!*) > 0 then pprin2 nspaces n >>$ %% PASCAL %% %% John Fitch %% global '(pascfuncname!*)$ share pascfuncname!*$ symbolic procedure procpasctem; begin scalar c; c:=flushspaces readch(); while not (c eq !$eof!$ or c eq '!.) do c:=flushspaces procpasctem1(c); end; symbolic procedure procpasctem1 c; begin scalar l,w, linelen; linelen := linelength 150; pprin2 c; while c neq !$eof!$ and w neq 'end do << if c eq !$eol!$ then << pterpri(); c := readch() >> else if c eq '!{ then << c := procpasccomm(); w:= nil >> else if c eq '!; then << c := procactive(); pprin2 c; w:=nil >>; if null w then << if liter c then l:= list c; c := readch(); while liter c or digit c or c eq '!_ do << pprin2 c; l:=c . l; c := readch() >>; w:=intern compress reverse l; l:=nil >>; if w eq 'var then c:=procpascvar c else if w eq 'const then c:=procpascconst c else if w eq 'type then c:=procpasctype c else if w memq '(function procedure operator) then c:=procfuncoperheading(w,c) else if w eq 'begin then c:= nil . procpasctem1 c else if w neq 'end then << while c neq '!; do << if c eq '!{ then c := procpasccomm() else << pprin2 c; c := readch() >> >>; pprin2 c; c:=nil . readch() >>; % recursive, since PASCAL is if w eq 'end then << c:=flushspaces c; if not ( c memq '(!; !.)) then gentranerr('e,nil,"END not followed by ; or .",nil); pprin2 c; c:=readch() >> else << w:=car c; c:=flushspaces cdr c; >> >>; linelength linelen; return c; end$ symbolic procedure procpasctype c; % TYPE ...; ...; ... % begin scalar w,l; next: while not liter c do << if c eq !$eol!$ then pterpri() else pprin2 c; c:=readch() >>; l:=nil; while liter c or digit c or c eq '!_ do << pprin2 c; l:=c . l; c := readch() >>; w:=intern compress reverse l; if w memq '(function procedure operator const var) then return w . c; c:=flushspaces c; if c neq '!= then gentranerr('e,nil,"Malformed TYPE declaration", nil); l:=readpascaltype c; c:=car l; pasc!-symtabput(pascfuncname!*,w,'type . cdr l); goto next; end; symbolic procedure procpascvar c; % VAR ...; ...; ... % begin scalar name,l,namelist; next: while not liter c do << if c eq !$eol!$ then pterpri() else pprin2 c; c:=readch() >>; l:=nil; while liter c or digit c or c eq '!_ do << pprin2 c; l:=c . l; c := readch() >>; name:=intern compress reverse l; if name memq '(function procedure operator const var begin) then return name . c; c:=flushspaces c; namelist:=list name; while (c = '!, ) do << pprin2 c; c:=flushspaces readch(); l:=nil; while liter c or digit c or c eq '!_ do << pprin2 c; l:=c . l; c := readch() >>; name:=intern compress reverse l; namelist:= name . namelist; c:=flushspaces c >>; if c neq '!: then gentranerr('e,nil,"Malformed VAR declaration", nil); l:=readpascaltype c; c:=car l; for each name in namelist do pasc!-symtabput(pascfuncname!*,name, cdr l); goto next; end; symbolic procedure procpasccomm; % { ... } % begin scalar c; pprin2 '!{; c := readch(); while c neq '!} do << if c eq !$eol!$ then pterpri() else pprin2 c; c := readch() >>; pprin2 c; c := readch(); return c end$ symbolic procedure procfuncoperheading(keyword,c); % returns the word after the procedure, and the character delimiting it begin scalar lst, name, i, ty, args, myargs; c:=flushspaces c; while not(seprp c or c eq '!( or c eq '!: ) do << name := aconc(name, c); pprin2 c; c := readch() >>; name := intern compress name; put('!$0, '!*pascalname!*, name); symtabput(name,'!*type!*,keyword); pascfuncname!*:=name; c:=flushspaces c; if c eq '!( then << i := 1; pprin2 c; c := readch(); while c neq '!) do << c:=flushspacescommas c; name := list c; pprin2 c; while not (seprp (c := readch()) or c memq list('!,, '!), '!:)) do << name := aconc(name, c); pprin2 c >>; put(intern compress append(explode2 '!$, explode2 i), '!*pascalname!*, name:=intern compress name); myargs := name . myargs; i := add1 i; if c eq '!: then << ty:=readpascaltype(c); c:=car ty; ty:=cdr ty; foreach n in myargs do pasc!-symtabput(pascfuncname!*,n,ty); args:=append(myargs,args); myargs:=nil; if (c eq '!;) then << pprin2 c; c:=readch() >> >>; c:=flushspaces c >>; !$!# := sub1 i; >> else !$!# :=0; if c neq '!: then << pprin2 c; while not (((c := readch()) eq '!:) or (c eq !$eol!$)) do pprin2 c >>; if c eq '!: then << ty := readpascaltype c; pasc!-symtabput(name,name,cdr ty); c:=car ty >>; if numberp i then while get(name := intern compress append(explode2 '!$, explode2 i), '!*pascalname!*) do << remprop(name, '!*pascalname!*); i:=sub1 i >>; lst:=nil; c:=flushspaces c; while liter c or digit c or c eq '!_ do << pprin2 c; lst:=c . lst; c := readch() >>; if lst then lst:=intern compress reverse lst; return lst . c end$ symbolic procedure readpascaltype(c); begin scalar ty; pprin2 c; c := flushspaces readch(); ty := list c; pprin2 c; while not (seprp (c := readch()) or c memq list('!;, '!), '![ )) do << ty := aconc(ty, c); pprin2 c >>; ty := intern compress ty; if ty eq 'array then return readpascalarraydeclaration(c) else return c . list ty; end; symbolic procedure readpascalarraydeclaration (c); begin scalar lo,hi,ty; ty:= nil; c:=flushspaces c; if not (c eq '![) then gentranerr(c,nil,"invalid pascal array declaration",nil); pprin2 c; l: c:=flushspaces readch(); lo:= list c; pprin2 c; while not (seprp (c := readch()) or c eq '!.) do << lo:=aconc(lo,c); pprin2 c >>; lo := compress lo; c:=flushspaces c; if not numberp lo then lo:=intern lo; pprin2 c; c:=readch(); if not (c eq '!.) then gentranerr (c,nil,".. not found in array declaration",nil); pprin2 c; c:=flushspaces readch(); hi:= list c; pprin2 c; while not (seprp (c := readch()) or c memq list('!,, '!])) do << hi:=aconc(hi,c); pprin2 c >>; hi := compress hi; if not numberp hi then hi:=intern hi; ty:= hi . ty; pprin2 c; c:=flushspaces c; if c eq '!] then << ty:= reverse ty; c:=flushspaces readch(); if not c memq '( !o !O) then gentranerr(c,nil,"not 'of'",nil); pprin2 c; c:=readch(); if not c memq '( !f !F) then gentranerr(c,nil,"not 'of'",nil); pprin2 c; c:=readpascaltype(readch()); return car c . append(cdr c,ty) >>; goto l; end; procedure procpascheader c; begin scalar name, i; while seprp c and c neq !$eol!$ do << pprin2 c; c := readch() >>; while not(seprp c or c memq list('!{, '!;, '!()) do << name := aconc(name, c); pprin2 c; c := readch() >>; if c memq list(!$eol!$, '!{, '!;) then return c; while seprp c and c neq !$eol!$ do << pprin2 c; c := readch() >>; if c neq '!( then return c; name := intern compress name; if not !*gendecs then pasc!-symtabput(name, nil, nil); put('!$0, '!*cname!*, name); pprin2 c; i := 1; c := readch(); while c neq '!) do << c:=flushspacescommas c; name := list c; pprin2 c; while not(seprp (c := readch()) or c memq list('!,, '!))) do << name := aconc(name, c); pprin2 c >>; put(intern compress append(explode2 '!$, explode2 i), '!*cname!*, intern compress name); i := add1 i; c:=flushspaces c; >>; !$!# := sub1 i; while get(name := intern compress append(explode2 '!$, explode2 i), '!*cname!*) do remprop(name, '!*cname!*); return procpascfunction c end$ procedure procpascfunction c; begin scalar block!-count; while c neq '!{ do if c eq '!; then c := procactive() else if c eq !$eol!$ then << pterpri(); c := readch() >> else << pprin2 c; c := readch() >>; pprin2 c; block!-count := 1; c := readch(); while block!-count > 0 do if c eq 'begin then << block!-count := add1 block!-count; pprin2 c; c := readch() >> else if c eq 'end then << block!-count := sub1 block!-count; pprin2 c; c := readch() >> else if c eq '!{ then c := procpasccomm() else if c eq '!; then c := procactive() else if c eq !$eol!$ then << pterpri(); c := readch() >> else << pprin2 c; c := readch() >>; return c end$ % misc routines - JHD 15.12.87 endmodule; module goutput; % GENTRAN Code Formatting & Printing and Error Handler %% Author: Barbara L. Gates %% %% December 1986 %% % Entry Points: FormatC, FormatFort, FormatRat, GentranErr, FormatPasc % All format routines moved to individual language modules % JHD December 1987 symbolic$ % GENTRAN Global Variables % global '(!*errchan!* !*outchanl!* !*posn!* !*stdin!* !*stdout!* !$eol!$)$ !*errchan!* := nil$ %error channel number !*posn!* := 0$ %current position on output line %% %% %% General Printing Functions %% %% %% % Pprin2 and pterpri changed by F.Kako. % Original did not work in SLISP/370, since output must be buffered. global '(!*pprinbuf!*); procedure pprin2 arg; begin !*pprinbuf!* := arg . !*pprinbuf!*; !*posn!* := !*posn!* + length explode2 arg; end$ procedure pterpri; begin scalar ch,pbuf; ch := wrs nil; pbuf := reversip !*pprinbuf!*; for each c in !*outchanl!* do <<wrs c; for each a in pbuf do prin2 a; terpri()>>; !*posn!* := 0; !*pprinbuf!* := nil; wrs ch end$ %% %% %% Error Handler %% %% %% %% Error & Warning Message Printing Routine %% procedure gentranerr(msgtype, exp, msg1, msg2); begin scalar holdich, holdoch, resp; holdich := rds !*errchan!*; holdoch := wrs !*errchan!*; terpri(); if exp then prettyprint exp; if msgtype eq 'e then << rds cdr !*stdin!*; wrs cdr !*stdout!*; rederr msg1 >>; prin2 "*** "; prin2t msg1; if msg2 then resp := yesp msg2; wrs holdoch; rds holdich; if not resp then error1() end$ %% %% %% Misc. Functions %% %% %% procedure min0(n1, n2); max(min(n1, n2), 0)$ procedure nspaces n; % Note n is assumed > 0 here. begin scalar s; for i := 1:n do s := ('!! . '! . s); return intern compress s end$ endmodule; end;