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fpcross_cleaned_03.pas
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PROGRAM fpcross_cleaned_03(input, output) ;
(*$N+ ***********
PCROSS is a cross-referencing program for PASCAL source files,
useful also to reformat programs (indentation, upper-lower case)
and to find omitted or excessive BEGINS and ENDS.
comments, gripes and bugs to A.ARMANDO
subtopics:
INPUT AND OUTPUT
HOW TO USE IT
SWITCHES
READING THE OUTPUT
<INPUT AND OUTPUT>
INPUT:
-----
through the file OLDSOURCE, a PASCAL source program file.
OUTPUT:
------
through NEWSOURCE:
a copy of your input file, unnumbered, prettyprinted
(proper indentation according to the statement nesting,
newline on standard places in the program, management of upper
and lower case according to the list of reserved words, etc.)
and trough CROSSLIST:
(a) a prettyprinted version of the program, showing in the left
margin the relations between BEGIN..END pairs,THEN..ELSE
pairs, etc.
(b) a cross reference of all the identifiers
(c) a report of procedure and function declaration nesting.
By default, PCROSS will change all reserved words and strings to upper
case, comments and everything else to lower case. There are switches
available to change this condition.
<HOW TO USE IT>
You can:
(a) use the /CREF switch when @EXECUTEing your program
or calling @PASCAL, or
(b) call it directly by typing @PCROSS.
In the first case, PCROSS will be called immediately after compilation;
You will have to type the file names, though. We are working to fix
that detail soon. Two sample calls are:
@pcross AND @exec myprog/cref
OLDSOURCE= myprog.pas/nocross (*COMPILER STUFF HERE*)
NEWSOURCE= myprog.pas OLDSOURCE= myprog.pas
CROSSLIST= NEWSOURCE=
CROSSLIST=
The left one calls it directly. The effect is the prettyprinting of the
program file itself. The right one is a call through the compiler, which
will use the default options.
The program parameters all have dafault values, but they can be modified
if desired, by the use of switches. See the subtopic SWITCHES.
See the subtopic SWITCHES.
<SWITCHES>
Brackets indicate optional.
<n> stands for an integer number.
<L> stands for a letter.
Switch Meaning Default.
FILES.
<n> is the sum of:
1 source program listing
2 listing of identifiers
4 listing of proc-func
declaration nesting.
8 listing of proc-func call nesting.
PAGE AND LINE FORMAT
margin every fifth line on
STATEMENT FORMAT
begin..end block is indented n spaces further.
if it is there, the block will not be indented,
but the begin and end statements will be
exdented n spaces. 0
after begin, end, then, else, repeat, etc.) off
comment from old standards to
'('-'*' and '*'-')' on
UPPER AND LOWER CASE
note: the possible values for <l> are:
u means upper case
l means lower case.
<READING THE OUTPUT>
The cross-reference file CROSSLIST contains 4 parts:
1. THE PROGRAM LISTING:
the letters and numbers in the left margin indicate the presence
of reserved words which have to match. (BEGIN-END, etc.) The two
words that match accorde with the scope rules will have the
same number. The first one (e. g., BEGIN) will appear at left, and
the second one (e.g., END) at right, inside the margin. The meaning
of the letters is:
B Begin E end
I If T Then S Else
L Loop X Exit E End
C Case E End
R Repeat U Until
2. THE CROSS REFERENCE LISTING OF IDENTIFIERS:
It is ordered alphabetically. For each identifier it contains:
a. A 'P' or 'F' if it is a procedure or function, respectively.
b. The name of the identifier, up to 10 symbols.
c. The line numbers in which it occur. Those lines in which
it is declared are marked with a D; those in which it
occurs more than once are marked with an M (Multiple).
3. THE NESTING OF PROCEDURE-FUNCTION DECLARATION:
It describes the static links. The scope is shown by indentation.
Each line describes a procedure or function and contains:
a. The name.
b. an (M), (P) or (F) if it is the main program, a procedure
or a function, respectively.
c. If there are more than one procedure-function with the same
name (in different scopes, which is perfectly valid, but
a horrible thing to do), a D (for DOUBLE) appears next,
and the rest of the information in this and the next part
of the listing contains data on both (or all of them, if
there are more than one.).
d. If it is an external procedure, an E will appear next.
e. The line number where the header appeared.
f. The line number of the BEGIN statement.
g. The line number of the END statement.
4. THE NESTING OF PROCEDURE-FUNCTION CALLS:
It describes the dynamic links. Calling depth is indicated by
indenting. The format of each line is the same as in the previous
report, except for the following:
a. Lines are numbered.
b. A procedure can be called from more than one place. To avoid
repeating the list of proc-funcs called by it,an asterisk
is printed after the name to indicate that it has already
been 'described'. Instead of the line numbers for its
appearence in the program, that for its appearence in this
part of the listing is given, so that you can refer to it.
*************)
(******************************************************************************)
(*$T-,R100 *)
(*PROGRAM WHICH CREATES A CROSS REFERENCE LISTING WITH SIMULTANEOUS
FORMATTING OF A PASCAL PROGRAM. WRITTEN BY MANUEL MALL.*)
(* INDEX *)
(**) (*DECLARATIONS*)
(**) (*INITPROCEDURES*)
(**) (*CHECKOPTIONS[*) (*SETSWITCH*)
(**) (*PAGE AND LINE CONTROL*) (*HEADER*) (*NEWPAGE*) (*NEWLINE*)
(**) (*BLOCK[*) (*OUTPUT PROCEDURES:*) (*ERROR*) (*WRITELINE[*) (*USETABS*)
(*]*) (*SETLASTSPACES*)
(**) (*INPUT PROCEDURES:*) (*INSYMBOL[*) (*READBUFFER*)
(**) (*RESWORD*) (*FINDNAME*) (*PARENTHESE*)
(**) (*DOCOMMENT*) (*]INSYMBOL*)
(**) (*"PARSING" PROCEDURES:*) (*RECDEF[*) (*CASEDEF*) (*PARENTHESE*) (*]
*)
(**) (*STATEMENT[*) (*AND ITS PARTS*) (*]*)
(**) (*]BLOCK*)
(**) (*PRINT_XREF_LIST[*) (*CHECKPAGE*) (*WRITEPROCNAME*) (*WRITELINENR*) (*
DUMPCALL*)
(**) (*]PRINT_XREF_LIST*)
(**) (*MAIN PROGRAM*)
(*DECLARATIONS*)
(**********************************************************************
*
*
* PROGRAM WHICH CREATES A CROSS REFERENCE LISTING
* AND A NEW, REFORMATTED VERSION OF A PASCAL PROGRAM.
*
* INPUT: PASCAL SOURCE FILE.
* OUTPUT: NEW REFORMATTED SOURCE FILE AND
* CROSS-REFERENCE LISTING.
*
* AUTHOR: MANUEL MALL (1974).
*
* MODIFIED AT STANFORD UNIVERSITY BY LARRY PAULSON.
* + NOT AS MANY FORCED NEWLINES.
* + THE REPORT ON PROCEDURE CALLS WAS CANCELLED.
*
* MODIFIED AT STANFORD UNIVERSITY BY ARMANDO R. RODRIGUEZ. 24-MAR-78.
* + A NEW SET OF SWITCH OPTIONS.
* + SOME NEW ERRORS ARE REPORTED.
*
* SEE THE PROCEDURE CHECKOPTIONS FOR THE AVAILABLE SWITCHES.
*
* MODIFIED AT STANFORD UNIVERSITY BY ARMANDO R. RODRIGUEZ. 6-JUL-88.
* + ACCEPT COMMENTS BETWEEN '%' AND BACKLASH AND BETWEEN '/*
' AND '*/'.
* + MARK 'P' OR 'F' IN FRONT OF THE PROC-FUNC NAMES.
* + MARK 'D' FOR DECLARATIONS AND 'M' FOR MULTIPLE OCCURRENCE
S.
* + SWITCH CLEAN/NOCLEAN TO STANDARIZE COMMENTS.
* + LISTING OF PROC-FUNC CALL NESTING.
* + REPORT THE LINE NUMBERS OF BEGIN AND END OF BODY OF PROCE
DURES.
* THINGS TO BE FIXED, OR DOCUMENTED:
* + IF THERE ARE TWO PROCS WITH ONE NAME, IT MIXES THEM.
* + IF A PROC NAME IS USED AS A VAR LATER, IT WILL BE SEEN
* AS A PROC FOR CALL-NESTING.
* + MAKE IT SMART ENOUGH TO AVOID CREATING STRUCTURES
* THAT WON'T BE USED, WHEN CROSS IS NOT 15.
* + MAKE IT RUN FASTER IN GENERAL. (TRY SPECIFICALLY I/O).
*
*
***********************************************************************)
{**********************************************************************
* *
* *
* PCROSS is now modified to run under the Stanford PASCAL *
* system. The various option switches for the program should *
* now be specified in special comments of the following form: *
* *
* (*%X+,F+,N-,R+,I-,C+,... other comments *) *
* *
* where: *
* *
* X+/- --> generate/do not generate a cross reference table, *
* F+/- --> generate/do not generate a reformatted listing, *
* N+/- --> allow/do not allow nesing of comments, *
* R+/- --> use upper/lower case in printing the reserved words , *
* I+/- --> use upper/lower case in printing the identifieres, *
* C+/- --> use upper/lower case in printing comments. *
* *
* *
* *
* PCROSS in general, and its reformating function in particular, *
* can be fairly time consuming and it is known to have some *
* problems. *
* *
* *
* *
* Sassan Hazeghi *
* *
* Stanford Linear Accelerator Center *
* P. O. Box 4349 *
* Stanfor, CA 94305. *
* *
* Jan. 22 1979. *
* *
* *
**********************************************************************}
LABEL 444;
CONST
version ='PCROSS: VERSION OF 4-aug-78 AT STANFORD UNIVERSITY';
maxline = 55; (*MAXIMUM NUMBER OF LINES PER PAGE, IG
NORING HEADER*)
oldwidth =200; (*MAXIMUM LENGTH OF INPUT LINES*)
max_line_count = 7777(*B*); (*LIMIT OF LINES/EDIT-PAGE*)
max_page_count = 77(*B*); (*LIMIT OF EDIT-PAGES*)
(* MAX_LINE_COUNT AND MAX_PAGE_COUNT SHOULD NOT NEED MORE THAN 18 B
ITS TOTAL*)
ht = 9 (*11B*); (*ASCII HORIZONTAL TAB*)
ff = 12 (*14B*); (*ASCII FORM FEED*)
cr = 13 (*15B*); (*ASCII CARRIAGE RETURN*)
blanks = ' '; (*FOR EDITING PURPOSES*)
dots = ' . . . . . . . . . .';
(*' . . . . . . . . . . . . . .'; *)
TYPE
pack6 = PACKED ARRAY[1..6] OF char;
pack9 = PACKED ARRAY[1..9] OF char;
errkinds = (begerrinblkstr,enderrinblkstr,missgenduntil,missgthen,missgof,
missgexit,
missgrpar,missgquote,linetoolong,missgmain,missgpoint);
lineptrty = @line;
listptrty = @list;
procstructy = @procstruc;
calledty = @called;
linenrty = 0..max_line_count;
pagenrty = 0..max_page_count;
symbol = (labelsy,constsy,typesy,varsy,programsy, (*DECSYM*)
functionsy,proceduresy,initprocsy, (*PROSYM*)
endsy,untilsy,elsesy,thensy,exitsy,ofsy,dosy,eobsy, (*ENDSYMBOLS*)
beginsy,casesy,loopsy,repeatsy,ifsy, (*BEGSYM*)
recordsy,forwardsy,gotosy,othersy,intconst,ident,strgconst,
externsy,langsy,forsy,whilesy,
rbracket,rparent,semicolon,point,lparent,lbracket,colon,eqlsy,
otherssy(*DELIMITER*),
letterup, letterlo, digit,quotech, dquotech, spacech,
dollarch, undsch, skipch ) ;
line = PACKED RECORD
(*DESCRIPTION OF THE LINE NUMBER*)
linenr : linenrty; (*LINE NUMBER*)
pagenr : pagenrty; (*PAGE NUMBER*)
contlink : lineptrty; (*NEXT LINE NUMBER RECORD*)
declflag: char; (*'D' IF DECLARATION, 'M' IF
MULTIPLE OCCURRENCE, BLANK OTHERWISE*)
END;
list = PACKED RECORD
(*DESCRIPTION OF IDENTIFIERS*)
name : alfa; (*NAME OF THE IDENTIFIER*)
llink , (*LEFT SUCCESSOR IN TREE*)
rlink : listptrty; (*RIGHT SUCCESSOR IN TREE*)
first , (*POINTER TO FIRST LINE NUMB
ER RECORD*)
last : lineptrty; (*POINTER TO LAST LINE NUMBE
R RECORD*)
externflag: char; (*'E' IF EXTERNAL, 'F' IF FO
RWARD,
'D' IF TWO PROCS WITH THE S
AME NAME, BLANK OTHERWISE*)
profunflag : char; (*'P' IF PROCEDURE NAME, 'F'
IF FUNCTION, BLANK OTHERWISE*)
procdata: procstructy;
END;
procstruc = PACKED RECORD
(*DESCRIPTION OF THE PROCEDURE NESTING*)
procname : listptrty; (*POINTER TO THE APPROPRIATE
IDENTIFIER*)
nextproc : procstructy; (*POINTER TO THE NEXT ELEMEN
T*)
linenr, (*LINE NUMBER OF THE PROCEDU
RE DEFINITION*)
begline, (*LINE NUMBER OF THE BEGIN S
TATEMENT*)
endline: linenrty; (*LINENUMBER OF THE END STAT
EMENT*)
pagenr , (*PAGE NUMBER OF THE PROCEDU
RE DEFINITION*)
begpage, (*PAGE NUMBER OF THE BEGIN S
TATEMENT*)
endpage, (*PAGE NUMBER OF THE END STA
TEMENT*)
proclevel: pagenrty; (*NESTING DEPTH OF THE PROCE
DURE*)
firstcall: calledty; (*LIST OF PROCEDURES CALLED
BY THIS ONE*)
printed: boolean; (*TO AVOID LOOPS IN THE CALL
-NEST LIST*)
END;
called = PACKED RECORD
nextcall : calledty;
whom : procstructy;
END;
VAR
(* INPUT CONTROL*)
i, (*INDEX VARIABLE*)
bufflen, (*LENGTH OF THE CURRENT LINE IN THE IN
PUT BUFFER*)
buffmark, (*LENGTH OF THE ALREADY PRINTED PART O
F THE BUFFER*)
bufferptr, (*POINTER TO THE NEXT CHARACTER IN THE
BUFFER*)
syleng, (*LENGTH OF THE LAST READ IDENTIFIER O
R LABEL*)
(* NESTING AND MATCHING CONTROL*)
bmarknr, (*NUMBER FOR MARKING OF 'BEGIN', 'LOOP
' ETC.*)
emarknr, (*NUMBER FOR MARKING OF 'END', 'UNTIL'
ETC.*)
level, (*NESTING DEPTH OF THE CURRENT PROCEDU
RE*)
variant_level, (*NESTING DEPTH OF VARIANTS*)
blocknr, (*COUNTS THE STATEMENTS 'BEGIN', 'CASE
', 'LOOP', 'REPEAT', 'IF'*)
errcount, (*COUNTS THE ERRORS ENCOUNTERED*)
(* FORMATTING*)
maxch, (*PAGE WIDTH IN COLS FOR CROSSLIST*)
increment, (*LINE NUMBER INCREMENT*)
indentbegin, (*INDENTATION AFTER A BEGIN*)
begexd, (*EXDENTATION FOR BEGIN-END PAIRS*)
feed, (*INDENTATION BY PROCEDURES AND BLOCKS
*)
spaces, (*INDENTATION FOR THE FORMATTING*)
lastspaces, (*ONE-TIME OVERRIDING VALUE FOR SPACES
*)
goodversion, (*keeps the value of the version optio
n*)
pagecnt, (*COUNTS THE FILE PAGES*)
pagecnt2, (*COUNTS THE PRINT PAGES PER FILE PAGE
*)
maxinc, (*GREATEST ALLOWABLE LINE NUMBER*)
reallincnt, (*COUNTS THE LINES PER PRINT PAGE*)
linecnt : integer; (*COUNTS THE LINES PER FILE PAGE*)
rtime: ARRAY[0..3] OF integer; (*CPU TIME REPORT*)
procstrucdata : RECORD
(*NEXT PROCEDURE TO BE PUT IN NESTING LIST*)
exists : boolean;
item : procstruc;
END;
flagger : ARRAY [-1..202] OF boolean; (*INDICATOR FOR UPPER AND LOWER CASE P
RINTING*)
buffer : ARRAY [-1..202] OF char; (*INPUT BUFFER*)
(* BUFFER HAS 2 EXTRA POSITIONS ON THE LEFT AND ONE ON THE RIGHT*)
tabs: ARRAY [1..17] OF (*ascii*) char; (*A STRING OF TABS FOR FORMATTING*)
linenb : PACKED ARRAY [1..5] OF char; (*SOS-LINE NUMBER*)
{date_text,time_text: alfa;} (*HEADING DATE AND TIME*)
prog_name, (*NAME OF CURRENT PROGRAM*)
sy : alfa; (*LAST SYMBOL READ*)
syty : symbol; (*TYPE OF THE LAST SYMBOL READ*)
(* SWITCHES*)
renewing, (*SET IF THE NEWLSOURCE FILE IS BEING
WRITTEN*)
crossing, (*SET IF THE CROSSLIST FILE IS BEING W
RITEN*)
refing, (*SET IF THE REFERENCES WILL BE PRINTE
D*)
decnesting, (*SET IF THE PRO-FUNC DECLARATION LIST
ING WILL BE PRINTED*)
callnesting, (*SET IF THE PRO-FUNC CALL NESTING WIL
L BE PRINTED*)
doting, (*SET IF DOTED LINES WILL BE PRINTED A
T LEFT MARGIN*)
forcing, (*SET IF THEN, ELSE, DO, REPEAT WILL F
ORCE NEWLINE*)
nestcomments, (*ACCEPT NESTED COMMENTS*)
cleaning, (*SET IF COMMENTS WILL BE STANDARIZD*)
rescase, (*SET IF RESERVED WORDS WILL UPSHIFT*)
nonrcase, (*SET IF NONRESERVED WORDS WILL UPSHIF
T*)
comcase, (*SET IF COMMENTS WILL UPSHIFT*)
strcase, (*SET IF STRINGS WILL UPSHIFT*)
thendo, (*SET WHENEVER 'SPACES := SPACES+DOFEE
D' IS EXECUTED*)
anyversion, (*set if goodversion > 9*)
(* OTHER CONTROLS*)
fwddecl, (*SET TRUE BY BLOCK AFTER 'FORWARD', '
EXTERN'*)
oldspaces, (*SET WHEN LASTSPACES SHOULD BE USED*)
eoline, (*SET AT END ON INPUT LINE*)
gotoinline, (*SET IF A HORRENDOUS GOTO STATEMENT I
N THIS LINE*)
declaring, (*SET WHILE PARSING DECLARATIONS*)
programpresent, (*SET AFTER PROGRAM ENCOUNTERED*)
nobody, (*SET IF NO MAIN BODY IS FOUND*)
eob : boolean; (*EOF-FLAG*)
(**)
ch, (*LAST READ CHARACTER*)
bmarktext, (*CHARACTER FOR MARKING OF 'BEGIN' ETC
.*)
emarktext: char; (*CHARACTER FOR MARKING 'END' ETC.*)
(* SETS*)
delsy : ARRAY [CHAR{' '..'_'}] OF symbol; (*TYPE ARRAY FOR DELIMITER CHARS*)
resnum: ARRAY[char] OF integer; (*INDEX OF THE FIRST KEYWORD BEGINNING
WITH THE INDEXED LETTER*)
reslist : ARRAY [1..46] OF alfa; (*LIST OF THE RESERVED WORDS*)
ressy : ARRAY [1..46] OF symbol; (*TYPE ARRAY OF THE RESERVED WORDS*)
{alphanum, (*CHARACTERS FROM 0..9 AND A..Z*)
digits, (*CHARACTERS FROM 0..9*)
letters : SET OF char; } (*CHARACTERS FROM A..Z*)
relevantsym, (*START SYMBOLS FOR STATEMENTS AND PRO
CEDURES*)
prosym, (*ALL SYMBOLS WHICH BEGIN A PROC.*)
decsym, (*ALL SYMBOLS WHICH BEGIN DECLARATIONS
*)
begsym, (*ALL SYMBOLS WHICH BEGIN COMPOUND STA
TEMENTS*)
endsym : SET OF symbol; (*ALL SYMBOLS WHICH TERMINATE STATEME
NTS OR PROCEDURES*)
(* POINTERS AND FILES*)
listptr, heapmark : listptrty; (*POINTER INTO THE BINARY TREE OF THE
IDENTIFIER*)
firstname : ARRAY [char ] OF listptrty; (*POINTER TO THE ROOTS OF THE
TREE*)
procstrucf, (*POINTER TO THE FIRST ELEMENT OF THE
PROCEDURE CALLS LIST*)
procstrucl : procstructy; (*POINTER TO THE LAST ELEMENT OF THE P
ROCEDURE CALLS LIST*)
workcall: calledty;
link_name,
new_name, cross_name: pack9; (*USED TO GET THE PARAMETER FILES*)
old_dev,link_device,
new_dev,cross_dev:pack6;
old_prot,old_ppn,
new_prot,new_ppn,cross_prot,cross_ppn: integer;
programname,oldfileid,newfileid,crossfileid: alfa;
TTY,
OLDSOURCE,NEWSOURCE,CROSSLIST: text; (*FILES PROCESSED BY THIS PROGRAM*)
(*INITPROCEDURES*)
PROCEDURE init0; {INITPROCEDURE;}
BEGIN (*CONSTANTS*)
eob := false;
maxch:=114;
increment:= {100} 1;
feed:=4;
indentbegin:=0;
nestcomments := true ;
cleaning := true ;
begexd:=0;
rescase:=true;
nonrcase:=false;
comcase:=false;
strcase:=true;
renewing:=true;
crossing:=true;
refing:= true (*false*);
decnesting:= true (*false*);
callnesting:=true (*false*);
doting:=false (*true*);
nobody := false;
anyversion := false;
goodversion := -1;
new_name:=' ';
cross_name:=' ';
programname:='PCROSS ';
oldfileid:='OLDSOURCE ';
newfileid:='NEWSOURCE ';
crossfileid:='CROSSLIST ';
END (*CONSTANTS*);
procedure init1; INITPROCEDURE;}
BEGIN (*RESERVED WORDS*)
resnum['A'] := 1; resnum['B'] := 3; resnum['C'] := 4;
resnum['D'] := 6; resnum['E'] := 9; resnum['F'] := 13;
resnum['G'] := 18; resnum['H'] := 19; resnum['I'] := 19;
resnum[succ('I')] := 22;
resnum['J'] := 22; resnum['K'] := 22; resnum['L'] := 22;
resnum['M'] := 24; resnum['N'] := 25; resnum['O'] := 27;
resnum['P'] := 30; resnum['Q'] := 33; resnum['R'] := 33;
resnum[succ('R')] := 35 ;
resnum['S'] := 35; resnum['T'] := 36; resnum['U'] := 39;
resnum['V'] := 40; resnum['W'] := 41; resnum['X'] := 43;
resnum['Y'] := 43; resnum['Z'] := 43; resnum[succ('Z')] := 43;
reslist[ 1] :='AND '; ressy [ 1] := othersy;
reslist[ 2] :='ARRAY '; ressy [ 2] := othersy;
reslist[ 3] :='BEGIN '; ressy [ 3] := beginsy;
reslist[ 4] :='CASE '; ressy [ 4] := casesy;
reslist[ 5] :='CONST '; ressy [ 5] := constsy;
reslist[ 6] :='DO '; ressy [ 6] := dosy;
reslist[ 7] :='DIV '; ressy [ 7] := othersy;
reslist[ 8] :='DOWNTO '; ressy [ 8] := othersy;
reslist[ 9] :='END '; ressy [ 9] := endsy;
reslist[10] :='ELSE '; ressy [10] := elsesy;
reslist[11] :='EXIT____ '; ressy [11] := exitsy;
reslist[12] :='EXTERN '; ressy [12] := externsy;
reslist[13] :='FOR '; ressy [13] := forsy;
reslist[14] :='FILE '; ressy [14] := othersy;
reslist[15] :='FORWARD '; ressy [15] := forwardsy;
reslist[16] :='FUNCTION '; ressy [16] := functionsy;
reslist[17] :='FORTRAN '; ressy [17] := langsy;
reslist[18] :='GOTO '; ressy [18] := gotosy;
reslist[19] :='IF '; ressy [19] := ifsy;
reslist[20] :='IN '; ressy [20] := othersy;
reslist[21] :='INITPROCED'; ressy [21] := initprocsy;
reslist[22] :='LOOP____ '; ressy [22] := loopsy;
reslist[23] :='LABEL '; ressy [23] := labelsy;
reslist[24] :='MOD '; ressy [24] := othersy;
reslist[25] :='NOT '; ressy [25] := othersy;
reslist[26] :='NIL '; ressy [26] := othersy;
reslist[27] :='OR '; ressy [27] := othersy;
reslist[28] :='OF '; ressy [28] := ofsy;
reslist[29] :='OTHERS '; ressy [29] := otherssy;
reslist[30] :='PACKED '; ressy [30] := othersy;
reslist[31] :='PROCEDURE '; ressy [31] := proceduresy;
reslist[32] :='PROGRAM '; ressy [32] := programsy;
reslist[33] :='RECORD '; ressy [33] := recordsy;
reslist[34] :='REPEAT '; ressy [34] := repeatsy;
reslist[35] :='SET '; ressy [35] := othersy;
reslist[36] :='THEN '; ressy [36] := thensy;
reslist[37] :='TO '; ressy [37] := othersy;
reslist[38] :='TYPE '; ressy [38] := typesy;
reslist[39] :='UNTIL '; ressy [39] := untilsy;
reslist[40] :='VAR '; ressy [40] := varsy;
reslist[41] :='WHILE '; ressy [41] := whilesy;
reslist[42] :='WITH '; ressy [42] := othersy;
END;
procedure init2; {INITPROCEDURE;}
BEGIN (*SETS*)
{digits := ['0'..'9'];
letters := ['A'..'Z'];
alphanum := ['0'..'9','A'..'Z'] (*LETTERS OR DIGITS*); }
decsym := [labelsy,constsy,typesy,varsy,programsy];
prosym := [functionsy..initprocsy];
endsym := [functionsy..eobsy]; (*PROSYM OR ENDSYMBOLS*)
begsym := [beginsy..ifsy];
relevantsym := [labelsy..initprocsy (*DECSYM OR PROSYM*),beginsy,forwardsy,
externsy,eobsy];
END (*SETS*);
PROCEDURE init;
BEGIN
init0 ;
init1 ;
init2 ;
rtime[0]:=clock(1);
new(heapmark); (*THE HEAP IS DEALLOCATED AFTER EACH PROGRAM*)
workcall := NIL;
i := 0;
bufflen := 0;
buffmark := 0;
bufferptr := 2;
variant_level := 0;
reallincnt:= 0;
linecnt :=0;
blocknr := 0;
level := 0;
pagecnt := 1;
pagecnt2 := 0;
errcount := 0;
eoline := true;
gotoinline := false;
programpresent := false;
procstrucdata.exists := false;
oldspaces := false;
declaring := false;
bmarktext := ' ';
emarktext := ' ';
sy := blanks; prog_name := blanks;
{date(date_text); time(time_text);}
FOR ch := chr(0) to chr(255) DO
firstname [ch] := NIL;
FOR ch := ' ' TO 'Z' DO
delsy [ch] := othersy;
FOR ch := 'A' TO 'I' DO delsy[ch] := letterup ;
FOR ch := 'J' TO 'R' DO delsy[ch] := letterup ;
FOR ch := 'S' TO 'Z' DO delsy[ch] := letterup ;
FOR ch := 'a' TO 'i' DO delsy[ch] := letterlo ;
FOR ch := 'j' TO 'r' DO delsy[ch] := letterlo ;
FOR ch := 's' TO 'z' DO delsy[ch] := letterlo ;
FOR ch := '0' TO '9' DO delsy[ch] := digit ;
delsy['"'] := dquotech;
delsy['#'] := skipch ;
delsy['$'] := dollarch ;
delsy[''''] := quotech ;
delsy['_'] := undsch ;
delsy [' '] := spacech;
delsy ['('] := lparent;
delsy [')'] := rparent;
delsy ['['] := lbracket;
delsy [']'] := rbracket;
delsy [';'] := semicolon;
delsy ['.'] := point;
delsy [':'] := colon;
delsy ['='] := eqlsy;
FOR i := -1 TO 201 DO
buffer [i] := ' ';
i := 0;
new (firstname['M']);
listptr := firstname ['M'];
WITH firstname ['M']@ DO
BEGIN
name := 'MAIN. ';
llink := NIL;
rlink := NIL;
profunflag := 'M';
new (first);
last := first;
WITH last@ DO
BEGIN
linenr := 1;
pagenr:=1;
contlink := NIL;
END;
END;
new (procstrucf);
WITH procstrucf@ DO
BEGIN
procname := firstname ['M'];
nextproc := NIL;
linenr := 1;
pagenr:=1;
proclevel:= 0;
firstcall := NIL;
END;
procstrucl := procstrucf;
ch := ' ';
FOR i := 1 TO 17 DO
tabs [i] := {chr (ht)} ' ';
linenb := '-----' ;
END (*INIT*);
(*CHECKOPTIONS[*) (*SETSWITCH*)
(*---------------------------------------------------------------------
! CHECKS THE PRESENCE OF SWITCHES WITH THE FILE NAMES.
!
! VALID SWITCHES ARE: BRACKETS INDICATE OPTIONAL.
! <N> STANDS FOR AN INTEGER NUMBER
.
! <L> STANDS FOR A LETTER.
!
! SWITCH MEANING DEFAULT.
!
! FILES.
! /[NO]NEW WRITTING OF THE NEWSOURCE FILE ON
! /[NO]CROSS[:<N>] WRITTING OF THE CROSSLIST FILE. ON,15
! <N> IS THE SUM OF:
! 1 SOURCE PROGRAM LISTING
! 2 LISTING OF IDENTIFIERS
! 4 LISTING OF PROC-FUNC
! DECLARATION NESTING.
! 8 LISTING OF PROC-FUNC CALL NESTING.
! /version:<n> behave as if conditionally compiling %<n>
! comments. -1
!
! PAGE AND LINE FORMAT
! /WIDTH:<N> PAGE WIDTH FOR CROSSLIST. (MINIMUM: 40) 132
! /INDENT:<N> INDENTATION BETWEEN LEVELS. 4
! /INCREMENT:<N> LINE NUMBER INCREMENT 100
! /[NO]DOTS PUT AS A GUIDE A DOTTED LINE AT THE LEFT
! MARGIN EVERY FIFTH LINE ON
!
! STATEMENT FORMAT
! /BEGIN:[-]<N> IF THE [-] IS NOT THERE, THE CONTENTS OF A
! BEGIN..END BLOCK IS INDENTED N SPACES FURTHER.
! IF IT IS THERE, THE BLOCK WILL NOT BE INDENTED,
! BUT THE BEGIN AND END STATEMENTS WILL BE
! EXDENTED N SPACES. 0
! /[NO]FORCE FORCES NEWLINE IN STANDARD PLACES. (BEFORE AND
! AFTER BEGIN, END, THEN, ELSE, REPEAT, ETC.) OFF
! /[NO]CLEAN CONVERTS THE SYMBOLS FOR BEGIN AND END OF
! COMMENT FROM OLD STANDARDS TO '('-'*' AND '*'-')'
ON
!
! UPPER AND LOWER CASE
! NOTE: THE POSSIBLE VALUES FOR <L> ARE:
! U MEANS UPPER CASE
! L MEANS LOWER CASE.
!
! /RES:<L> CASE USED FOR RESERVED WORDS. U
! /NONRES:<L> SAME FOR NON-RESERVED WORDS. L
! /COMM:<L> SAME FOR COMMENTS. L
! /STR:<L> SAME FOR STRINGS. U
! /CASE:<L> RESETS ALL THE DEFAULTS TO <L>.
OFF
!
+--------------------------------------------------------------------*)
PROCEDURE checkoptions;
VAR
try: integer;
PROCEDURE setswitch(opt:alfa;VAR switch:boolean);
VAR
i: integer;
BEGIN (*SETSWITCH*)
(* getoption(opt,i); *) i := ord('l') ;
IF i=ord('L') THEN
switch:=false
ELSE
IF i=ord('U') THEN
switch:=true;
END (*SETSWITCH*);
PROCEDURE showthemall (i: integer);
BEGIN
writeln (tty,'(',i:3,')',oldfileid,',',programname);
writeln (tty, new_name,',',new_prot,',',new_ppn,',',new_dev,',',
newfileid,',',programname);
writeln (tty, cross_name,',',cross_prot,',',cross_ppn,',',cross_dev,',',
crossfileid,',',programname);
writeln (tty);
(* break(tty); *)
END;
BEGIN (*CHECKOPTIONS*)
(*##############
getparameter(oldsource,oldfileid,programname,true);
IF NOT option('NONEW ') THEN
parnameget(new_name,new_prot,new_ppn,new_dev,newfileid,programname,false);
IF NOT option('NOCROSS ') THEN
parnameget(cross_name,cross_prot,cross_ppn,cross_dev,crossfileid,program
name,false);
IF NOT option('NONEW ') THEN
begin
IF (new_name = ' ') AND (new_dev = 'dsk ') THEN
BEGIN
getstatus(oldsource, new_name,old_prot,old_ppn,old_dev);
new_name[7]:='N';
new_name[8]:='E';
new_name[9]:='W';
END;
startfile(newsource,new_name,new_prot,new_ppn,new_dev,false,newfileid);
end;
IF NOT option('NOCROSS ') THEN
begin
IF (cross_name = ' ') AND (cross_dev = 'dsk ') THEN
BEGIN
getstatus(oldsource, cross_name,old_prot,old_ppn,old_dev);
cross_name[7]:='C';
cross_name[8]:='R';
cross_name[9]:='L';
END;
startfile(crosslist,cross_name,cross_prot,cross_ppn,cross_dev,false,cros
sfileid);
end;
#####################*)
renewing:= true {NOT option('NONEW ')} ;
crossing:= true {NOT option('NOCROSS ')} ;
IF crossing THEN
BEGIN
(* getoption('CROSS ',try); *) try := 0 ;
IF try = 0 THEN
try:=15;
callnesting:=try > 7;
decnesting:=(try MOD 8) > 3;
refing:= (try MOD 4) > 1;
crossing:=(try MOD 2) = 1;
END;
(*if option('version ') then *)
begin
(* getoption('version ',goodversion); *) goodversion := 15 ;
if goodversion > 9 then
begin
goodversion := -1;
anyversion := true;
end;
end;
(*IF option('WIDTH ') THEN *)
BEGIN
(* getoption('WIDTH ',maxch); *) maxch := 90 ;
IF maxch < 40 THEN
maxch:=40;
maxch:=maxch-18;
END;
(* #################
IF option('INDENT ') THEN
BEGIN
// getoption('INDENT ',feed); *)
IF feed < 0 THEN
feed:=4;
END;
IF option('INCREMENT ') THEN
BEGIN
(* getoption('INCREMENT ',increment); *)
IF increment < 0 THEN
increment:= {100} 1;
END;
doting:=NOT option('NODOTS ');
IF option('BEGIN ') THEN
BEGIN
(* getoption('BEGIN ',indentbegin); *)
IF indentbegin < 0 THEN
BEGIN
begexd:=-indentbegin;
indentbegin:=0;
END;
END;
forcing:=option('FORCE ');
cleaning := NOT option('NOCLEAN ');
IF option('CASE ') THEN
BEGIN
setswitch('CASE ',rescase);
nonrcase:=rescase;
comcase:=rescase;
strcase:=rescase;
END;
setswitch('RES ',rescase);
setswitch('NONRES ',nonrcase);
setswitch('COMM ',comcase);
setswitch('STR ',strcase);
END (*CHECKOPTIONS*);
(*PAGE AND LINE CONTROL*) (*HEADER*) (*NEWPAGE*) (*NEWLINE*)
PROCEDURE header (name: alfa);
(*PRINT TOP OF FORM AND HEADER ON LIST OUTPUT*)
VAR
position: integer;
BEGIN (*HEADER*)
pagecnt2 := pagecnt2 + 1;
reallincnt := 0;
IF crossing THEN
BEGIN
page(crosslist); { writeln(crosslist) ;}
write (crosslist, 'Page':9, pagecnt:4, '-', pagecnt2:3 {, ' ':15});
position := 84;
IF maxch < 84 THEN
BEGIN
reallincnt:=1;
writeln(crosslist);
position := 42;
END;
write(crosslist,' [', prog_name,']', time{_text}:50, date{_text});
IF (name <> blanks) AND (maxch < position + 25) THEN
BEGIN
reallincnt := reallincnt + 1;
writeln (crosslist);
position := 0;
END;
writeln (crosslist, ' ': maxch - position, name);
writeln(crosslist);
END;
END (*HEADER*);
PROCEDURE newpage;
BEGIN (*NEWPAGE*)
pagecnt2 := 0;
pagecnt := pagecnt + 1;
IF renewing THEN
(*write(newsource, chr(cr), chr(ff));*) writeln(newsource) ;
header (blanks);
IF eoln (oldsource) THEN
readln(oldsource);
linecnt := 0;
reallincnt := 0;
IF prog_name <> blanks THEN
write(tty, pagecnt:3,'..');
(* break(tty); *)
END (*NEWPAGE*);
PROCEDURE newline;
BEGIN
IF reallincnt = maxline THEN
header (blanks);
linecnt := linecnt + 1;
reallincnt := reallincnt + 1;
if crossing then write(crosslist, ' ':5);
if renewing then write(newsource, ' ':5) ;
END;
(*BLOCK[*) (*OUTPUT PROCEDURES:*) (*ERROR*) (*WRITELINE[*) (*USETABS*) (*]*)
(*SETLASTSPACES*)
PROCEDURE block;
VAR
curproc : listptrty; (*ZEIGER AUF DIE PROZEDUR IN DEREN ANWEISUNG
STEIL DAS PROGRAMM SICH BEFINDET*)
itisaproc : boolean; (*TRUE WHEN THE WORD PROCEDURE IS FOUND*)
locprocstl: procstructy;
PROCEDURE error (errnr : errkinds);
BEGIN (*ERROR*)
errcount := errcount+1;
reallincnt := reallincnt + 1; (*COUNT THE LINE OF THE ERROR MESSAGE ON T
HE LPT: FILE*)
IF crossing THEN
BEGIN
write (crosslist, ' ':17,' *??* ');
CASE errnr OF
begerrinblkstr : write(crosslist, sy,' ? ? ? : ERROR IN BLOCK'
,'STRUCTURE. POSSIBLY A MISSING BEGIN.');
enderrinblkstr : write(crosslist, sy,' ? ? ? : ERROR IN BLOCK'