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mirror of https://github.com/livingcomputermuseum/pdp7-unix.git synced 2026-02-23 07:43:00 +00:00
Minor code cleanup
This commit is contained in:
rswier
2016-03-21 22:13:32 -04:00
parent 5f4e420e63
commit 9f69fc62da
2 changed files with 70 additions and 72 deletions

View File

@@ -79,8 +79,7 @@ symbol() {
} else {
if (eof)
return(0);
else
c = read();
c = read();
}
loop:
ct = ctab[c];
@@ -97,18 +96,18 @@ loop:
goto loop;
}
if (c=='=') {
if (c=='=')
return(subseq('=',80,60));
}
if (c=='<') {
if (c=='<')
return(subseq('=',63,62));
}
if (c=='>') {
if (c=='>')
return(subseq('=',65,64));
}
if (c=='!') {
if (c=='!')
return(subseq('=',34,61));
}
if (c=='$') {
if (subseq('(',0,1))
return(2);
@@ -155,9 +154,12 @@ com1:
}
if (ct==123) { /* letter */
sp = symbuf;
while(ctab[c]==123 | ctab[c]==124) {
if (sp<symbuf+9) { *sp = c; sp = sp+1; }
c = read();
while(ct==123 | ct==124) {
if (sp<symbuf+9) {
*sp = c;
sp = sp+1;
}
ct = ctab[c = read()];
}
*sp = 0;
peekc = c;
@@ -192,19 +194,21 @@ getcc() {
auto c;
cval = 0;
if ((c = mapch('*'')) < 0) return;
if ((c = mapch('*'')) < 0)
return;
cval = c;
if ((c = mapch('*'')) < 0) return;
if ((c = mapch('*'')) < 0)
return;
cval = cval * 512 + c;
if ((c = mapch('*'')) >= 0)
error('cc');
if (mapch('*'') >= 0)
error('cc');
}
mapch(c) {
extrn peekc;
auto a;
if((a=read())==c)
if ((a=read())==c)
return(-1);
if (a=='*n' | a==0 | a==4) {
@@ -260,7 +264,7 @@ case21:
if (o==20) { /* name */
if (*csym==0) { /* not seen */
if((peeksym=symbol())==6) { /* ( */
if ((peeksym=symbol())==6) { /* ( */
*csym = 6; /* extrn */
} else {
*csym = 2; /* internal */
@@ -268,7 +272,7 @@ case21:
csym[1] = isn;
}
}
if(*csym==5) /* auto */
if (*csym==5) /* auto */
gen('a',csym[1]);
else {
write('x ');
@@ -394,13 +398,10 @@ loop:
peeksym = o;
}
pexpr()
{
auto o, t;
if ((o=symbol())==6) { /* ( */
pexpr() {
if (symbol()==6) { /* ( */
expr(15);
if ((o=symbol())==7) /* ) */
if (symbol()==7) /* ) */
return;
}
error('()');
@@ -429,7 +430,7 @@ declare(kw) {
goto done;
}
done:
if(o==1 & kw!=8 | o==7 & kw==8) /* auto/extrn ; param ')' */
if (o==1 & kw!=8 | o==7 & kw==8) /* auto/extrn ; param ')' */
return;
syntax:
error('[]'); /* declaration syntax */
@@ -440,10 +441,10 @@ extdef() {
auto o, c;
o = symbol();
if(o==0 | o==1) /* eof ; */
if (o==0 | o==1) /* eof ; */
return;
if(o!=20) /* name */
if (o!=20) /* name */
goto syntax;
csym[0] = 6; /* extrn */
@@ -555,9 +556,8 @@ stmt() {
next:
o = symbol();
if (o==0) /* eof */
{
if (o==0) { /* eof */
error('fe'); /* Unexpected eof */
return;
}
@@ -579,7 +579,7 @@ next:
}
if (cval==11) { /* return */
if((peeksym=symbol())==6) /* ( */
if ((peeksym=symbol())==6) /* ( */
pexpr();
gen('n',7); /* retrn */
goto semi;
@@ -716,8 +716,7 @@ name(s) {
}
}
error(code)
{
error(code) {
extrn line, eof, csym, nerror, fout;
auto f;