144 lines
2.9 KiB
Plaintext
144 lines
2.9 KiB
Plaintext
exec: iffable
|
|
| SDO end_spec label opt_comma dospecw
|
|
{
|
|
if($3->labdefined)
|
|
execerr("no backward DO loops", CNULL);
|
|
$3->blklevel = blklevel+1;
|
|
exdo($3->labelno, NPNULL, $5);
|
|
}
|
|
| SDO end_spec opt_comma dospecw
|
|
{
|
|
exdo((int)(ctls - ctlstack - 2), NPNULL, $4);
|
|
NOEXT("DO without label");
|
|
}
|
|
| SENDDO
|
|
{ exenddo(NPNULL); }
|
|
| logif iffable
|
|
{ exendif(); thiswasbranch = NO; }
|
|
| logif STHEN
|
|
| SELSEIF end_spec SLPAR expr SRPAR STHEN
|
|
{ exelif($4); lastwasbranch = NO; }
|
|
| SELSE end_spec
|
|
{ exelse(); lastwasbranch = NO; }
|
|
| SENDIF end_spec
|
|
{ exendif(); lastwasbranch = NO; }
|
|
;
|
|
|
|
logif: SLOGIF end_spec SLPAR expr SRPAR
|
|
{ exif($4); }
|
|
;
|
|
|
|
dospec: name SEQUALS exprlist
|
|
{ $$ = mkchain((char *)$1, $3); }
|
|
;
|
|
|
|
dospecw: dospec
|
|
| SWHILE SLPAR expr SRPAR
|
|
{ $$ = mkchain(CNULL, (chainp)$3); }
|
|
;
|
|
|
|
iffable: let lhs SEQUALS expr
|
|
{ exequals((struct Primblock *)$2, $4); }
|
|
| SASSIGN end_spec assignlabel STO name
|
|
{ exassign($5, $3); }
|
|
| SCONTINUE end_spec
|
|
| goto
|
|
| io
|
|
{ inioctl = NO; }
|
|
| SARITHIF end_spec SLPAR expr SRPAR label SCOMMA label SCOMMA label
|
|
{ exarif($4, $6, $8, $10); thiswasbranch = YES; }
|
|
| call
|
|
{ excall($1, LBNULL, 0, labarray); }
|
|
| call SLPAR SRPAR
|
|
{ excall($1, LBNULL, 0, labarray); }
|
|
| call SLPAR callarglist SRPAR
|
|
{ if(nstars < maxlablist)
|
|
excall($1, mklist(revchain($3)), nstars, labarray);
|
|
else
|
|
many("alternate returns", 'l', maxlablist);
|
|
}
|
|
| SRETURN end_spec opt_expr
|
|
{ exreturn($3); thiswasbranch = YES; }
|
|
| stop end_spec opt_expr
|
|
{ exstop($1, $3); thiswasbranch = $1; }
|
|
;
|
|
|
|
assignlabel: SICON
|
|
{ $$ = mklabel( convci(toklen, token) ); }
|
|
;
|
|
|
|
let: SLET
|
|
{ if(parstate == OUTSIDE)
|
|
{
|
|
newproc();
|
|
startproc(ESNULL, CLMAIN);
|
|
}
|
|
}
|
|
;
|
|
|
|
goto: SGOTO end_spec label
|
|
{ exgoto($3); thiswasbranch = YES; }
|
|
| SASGOTO end_spec name
|
|
{ exasgoto($3); thiswasbranch = YES; }
|
|
| SASGOTO end_spec name opt_comma SLPAR labellist SRPAR
|
|
{ exasgoto($3); thiswasbranch = YES; }
|
|
| SCOMPGOTO end_spec SLPAR labellist SRPAR opt_comma expr
|
|
{ if(nstars < maxlablist)
|
|
putcmgo(putx(fixtype($7)), nstars, labarray);
|
|
else
|
|
many("labels in computed GOTO list", 'l', maxlablist);
|
|
}
|
|
;
|
|
|
|
opt_comma:
|
|
| SCOMMA
|
|
;
|
|
|
|
call: SCALL end_spec name
|
|
{ nstars = 0; $$ = $3; }
|
|
;
|
|
|
|
callarglist: callarg
|
|
{ $$ = $1 ? mkchain((char *)$1,CHNULL) : CHNULL; }
|
|
| callarglist SCOMMA callarg
|
|
{ $$ = $3 ? mkchain((char *)$3, $1) : $1; }
|
|
;
|
|
|
|
callarg: expr
|
|
| SSTAR label
|
|
{ if(nstars < maxlablist) labarray[nstars++] = $2; $$ = 0; }
|
|
;
|
|
|
|
stop: SPAUSE
|
|
{ $$ = 0; }
|
|
| SSTOP
|
|
{ $$ = 2; }
|
|
;
|
|
|
|
exprlist: expr
|
|
{ $$ = mkchain((char *)$1, CHNULL); }
|
|
| exprlist SCOMMA expr
|
|
{ $$ = hookup($1, mkchain((char *)$3,CHNULL) ); }
|
|
;
|
|
|
|
end_spec:
|
|
{ if(parstate == OUTSIDE)
|
|
{
|
|
newproc();
|
|
startproc(ESNULL, CLMAIN);
|
|
}
|
|
|
|
/* This next statement depends on the ordering of the state table encoding */
|
|
|
|
if(parstate < INDATA) enddcl();
|
|
}
|
|
;
|
|
|
|
intonlyon:
|
|
{ intonly = YES; }
|
|
;
|
|
|
|
intonlyoff:
|
|
{ intonly = NO; }
|
|
;
|