| 1 |
#!/bin/sh |
| 2 |
|
| 3 |
# Fix up yacc output to allow dynamic allocation. Since perly.c |
| 4 |
# is now provided with the perl source, this should not be necessary. |
| 5 |
# |
| 6 |
# However, if the user wishes to use byacc, or wishes to try another |
| 7 |
# compiler compiler (e.g. bison or yacc), this script will get run. |
| 8 |
# See makefile run_byacc target for more details. |
| 9 |
# |
| 10 |
# Currently, only byacc version 1.8 is fully supported. |
| 11 |
# |
| 12 |
# Hacks to make it work with Interactive's SysVr3 Version 2.2 |
| 13 |
# doughera@lafayette.edu (Andy Dougherty) 3/23/91 |
| 14 |
# |
| 15 |
# Additional information to make the BSD section work with SunOS 4.0.2 |
| 16 |
# tdinger@East.Sun.COM (Tom Dinger) 4/15/1991 |
| 17 |
# |
| 18 |
# Also edit some practices gcc -Wall finds questionable. |
| 19 |
# |
| 20 |
|
| 21 |
gnupatch=patch |
| 22 |
. ./config.sh |
| 23 |
|
| 24 |
input=$1 |
| 25 |
output=$2 |
| 26 |
tmp=perly$$ |
| 27 |
|
| 28 |
inputh=`echo $input|sed 's:\.c$:.h:'` |
| 29 |
if grep '^#ifdef PERL_CORE' $inputh; then |
| 30 |
: never mind |
| 31 |
else |
| 32 |
echo "#ifdef PERL_CORE" > $tmp |
| 33 |
sed -e 's:^typedef union {:#endif /* PERL_CORE */\ |
| 34 |
\ |
| 35 |
typedef union {:' $inputh >> $tmp |
| 36 |
mv -f $tmp $inputh |
| 37 |
fi |
| 38 |
|
| 39 |
if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then |
| 40 |
cp $input $output |
| 41 |
# Don't expect the diff to do everything -- do some by hand |
| 42 |
if test -f perly_c.diff; then |
| 43 |
$gnupatch -F3 $output <perly_c.diff |
| 44 |
sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \ |
| 45 |
-e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \ |
| 46 |
-e '/\[\] *= *[{]/s/^/static /' \ |
| 47 |
-e '/^static static/s/^static //' \ |
| 48 |
-e '/^#define.WORD/,/^#define.ARROW/d' \ |
| 49 |
-e '/^int.yydebug/,/^#define.yystacksize/d' \ |
| 50 |
-e 's/^yyerrlab:$//' \ |
| 51 |
-e 's/^ goto yyerrlab;//' \ |
| 52 |
-e 's/^yynewerror:$//' \ |
| 53 |
-e 's/^ goto yynewerror;//' \ |
| 54 |
-e 's|^static char yysccsid\(.*\)|/* static char yysccsid\1 */|' \ |
| 55 |
-e 's|deprecate(|deprecate_old(|' \ |
| 56 |
< $output > $tmp && mv -f $tmp $output || exit 1 |
| 57 |
rm -rf $input |
| 58 |
echo "If you need to debug perly.c, you need to fix up the #line" |
| 59 |
echo "directives yourself." |
| 60 |
fi |
| 61 |
exit |
| 62 |
elif grep 'yaccpar 1.9 (Berkeley)' $input >/dev/null 2>&1; then |
| 63 |
if test -f perly.c.dif9; then |
| 64 |
$gnupatch -F3 $output <perly.c.dif9 |
| 65 |
sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \ |
| 66 |
-e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \ |
| 67 |
-e '/\[\] *= *[{]/s/^/static /' \ |
| 68 |
-e '/^static static/s/^static //' \ |
| 69 |
-e '/^#define.WORD/,/^#define.ARROW/d' \ |
| 70 |
-e '/^int.yydebug/,/^#define.yystacksize/d' \ |
| 71 |
-e 's/^yyerrlab:$//' \ |
| 72 |
-e 's/^ goto yyerrlab;//' \ |
| 73 |
-e 's/^yynewerror:$//' \ |
| 74 |
-e 's/^ goto yynewerror;//' \ |
| 75 |
-e 's|^static char yysccsid\(.*\)|/* static char yysccsid\1 */|' \ |
| 76 |
-e 's|deprecate(|deprecate_old(|' \ |
| 77 |
< $output > $tmp && mv -f $tmp $output || exit 1 |
| 78 |
rm -rf $input |
| 79 |
echo "If you need to debug perly.c, you need to fix up the #line" |
| 80 |
echo "directives yourself." |
| 81 |
exit 0 |
| 82 |
else |
| 83 |
echo "Diffs from byacc-1.9 are not available." |
| 84 |
echo "If you wish to proceed anyway, do" |
| 85 |
echo "cp $input $output" |
| 86 |
echo "cp y.tab.h perly.h" |
| 87 |
echo "and re-run make. Otherwise, I will use the old perly.c" |
| 88 |
touch perly.c |
| 89 |
# Exit with error status to stop make. |
| 90 |
exit 1 |
| 91 |
fi |
| 92 |
fi |
| 93 |
|
| 94 |
plan="unknown" |
| 95 |
|
| 96 |
echo "" |
| 97 |
echo "Warning: the yacc you have used is not directly supported by perl." |
| 98 |
echo "The perly.fixer script will attempt to make some changes to the generated" |
| 99 |
echo "file. The changes may be incomplete and that might lead to problems later" |
| 100 |
echo "(especially with complex scripts). You may need to apply the changes" |
| 101 |
echo "embedded in perl.fixer (and/or perly_c.dif*) by hand." |
| 102 |
echo "" |
| 103 |
|
| 104 |
# Below, we check for various characteristic yaccpar outputs. |
| 105 |
|
| 106 |
# Test for BSD 4.3 version. |
| 107 |
# Also tests for the SunOS 4.0.2 version |
| 108 |
egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\]; |
| 109 |
short[ ]*yys\[ *YYMAXDEPTH *\] *; |
| 110 |
yyps *= *&yys\[ *-1 *\]; |
| 111 |
yypv *= *&yyv\[ *-1 *\]; |
| 112 |
if *\( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null |
| 113 |
|
| 114 |
set `wc -l $tmp` |
| 115 |
if test "$1" = "5"; then |
| 116 |
plan="bsd43" |
| 117 |
fi |
| 118 |
|
| 119 |
if test "$plan" = "unknown"; then |
| 120 |
# Test for ISC 2.2 version (probably generic SysVr3). |
| 121 |
egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\]; |
| 122 |
int[ ]*yys\[ *YYMAXDEPTH *\] *; |
| 123 |
yyps *= *&yys\[ *-1 *\]; |
| 124 |
yypv *= *&yyv\[ *-1 *\]; |
| 125 |
if *\( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null |
| 126 |
|
| 127 |
set `wc -l $tmp` |
| 128 |
if test "$1" = "5"; then |
| 129 |
plan="isc" |
| 130 |
fi |
| 131 |
fi |
| 132 |
|
| 133 |
# ------ |
| 134 |
|
| 135 |
case "$plan" in |
| 136 |
################################################################## |
| 137 |
# The SunOS 4.0.2 version has the comparison fixed already. |
| 138 |
# Also added are out of memory checks (makes porting the generated |
| 139 |
# code easier) For most systems, it can't hurt. -- TD |
| 140 |
"bsd43") |
| 141 |
echo "Attempting to patch perly.c to allow dynamic yacc stack allocation" |
| 142 |
echo "Assuming bsd4.3 yaccpar" |
| 143 |
cat >$tmp <<'END' |
| 144 |
/YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\ |
| 145 |
int yymaxdepth = YYMAXDEPTH;\ |
| 146 |
YYSTYPE *yyv; /* where the values are stored */\ |
| 147 |
short *yys;\ |
| 148 |
short *maxyyps; |
| 149 |
|
| 150 |
/short[ ]*yys\[ *YYMAXDEPTH *\] *;/d |
| 151 |
|
| 152 |
/yyps *= *&yys\[ *-1 *\];/d |
| 153 |
|
| 154 |
/yypv *= *&yyv\[ *-1 *\];/c\ |
| 155 |
\ if (!yyv) {\ |
| 156 |
\ New(73, yyv, yymaxdepth, YYSTYPE);\ |
| 157 |
\ New(73, yys, yymaxdepth, short);\ |
| 158 |
\ if ( !yyv || !yys ) {\ |
| 159 |
\ yyerror( "out of memory" );\ |
| 160 |
\ return(1);\ |
| 161 |
\ }\ |
| 162 |
\ maxyyps = &yys[yymaxdepth];\ |
| 163 |
\ }\ |
| 164 |
\ yyps = &yys[-1];\ |
| 165 |
\ yypv = &yyv[-1]; |
| 166 |
|
| 167 |
|
| 168 |
/if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\ |
| 169 |
\ if( ++yyps >= maxyyps ) {\ |
| 170 |
\ int tv = yypv - yyv;\ |
| 171 |
\ int ts = yyps - yys;\ |
| 172 |
\ |
| 173 |
\ yymaxdepth *= 2;\ |
| 174 |
\ Renew(yyv, yymaxdepth, YYSTYPE);\ |
| 175 |
\ Renew(yys, yymaxdepth, short);\ |
| 176 |
\ if ( !yyv || !yys ) {\ |
| 177 |
\ yyerror( "yacc stack overflow" );\ |
| 178 |
\ return(1);\ |
| 179 |
\ }\ |
| 180 |
\ yyps = yys + ts;\ |
| 181 |
\ yypv = yyv + tv;\ |
| 182 |
\ maxyyps = &yys[yymaxdepth];\ |
| 183 |
\ } |
| 184 |
|
| 185 |
/yacc stack overflow.*}/d |
| 186 |
/yacc stack overflow/,/}/d |
| 187 |
END |
| 188 |
if sed -f $tmp <$input >$output |
| 189 |
then echo "The edit seems to have been applied okay." |
| 190 |
else echo "The edit seems to have failed!" |
| 191 |
fi |
| 192 |
;; |
| 193 |
|
| 194 |
####################################################### |
| 195 |
"isc") # Interactive Systems 2.2 version |
| 196 |
echo "Attempting to patch perly.c to allow dynamic yacc stack allocation" |
| 197 |
echo "Assuming Interactive SysVr3 2.2 yaccpar" |
| 198 |
# Easier to simply put whole script here than to modify the |
| 199 |
# bsd script with sed. |
| 200 |
# Main changes: yaccpar sometimes uses yy_ps and yy_pv |
| 201 |
# which are local register variables. |
| 202 |
# if(++yyps > YYMAXDEPTH) had opening brace on next line. |
| 203 |
# I've kept that brace in along with a call to yyerror if |
| 204 |
# realloc fails. (Actually, I just don't know how to do |
| 205 |
# multi-line matches in sed.) |
| 206 |
cat > $tmp << 'END' |
| 207 |
/YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\ |
| 208 |
int yymaxdepth = YYMAXDEPTH;\ |
| 209 |
YYSTYPE *yyv; /* where the values are stored */\ |
| 210 |
int *yys;\ |
| 211 |
int *maxyyps; |
| 212 |
|
| 213 |
/int[ ]*yys\[ *YYMAXDEPTH *\] *;/d |
| 214 |
|
| 215 |
/yyps *= *&yys\[ *-1 *\];/d |
| 216 |
|
| 217 |
/yypv *= *&yyv\[ *-1 *\];/c\ |
| 218 |
\ if (!yyv) {\ |
| 219 |
\ New(73, yyv, yymaxdepth, YYSTYPE);\ |
| 220 |
\ New(73, yys, yymaxdepth, int);\ |
| 221 |
\ maxyyps = &yys[yymaxdepth];\ |
| 222 |
\ }\ |
| 223 |
\ yyps = &yys[-1];\ |
| 224 |
\ yypv = &yyv[-1]; |
| 225 |
|
| 226 |
/if *( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *)/c\ |
| 227 |
\ if( ++yy_ps >= maxyyps ) {\ |
| 228 |
\ int tv = yy_pv - yyv;\ |
| 229 |
\ int ts = yy_ps - yys;\ |
| 230 |
\ |
| 231 |
\ yymaxdepth *= 2;\ |
| 232 |
\ Renew(yyv, yymaxdepth, YYSTYPE);\ |
| 233 |
\ Renew(yys, yymaxdepth, int);\ |
| 234 |
\ yy_ps = yyps = yys + ts;\ |
| 235 |
\ yy_pv = yypv = yyv + tv;\ |
| 236 |
\ maxyyps = &yys[yymaxdepth];\ |
| 237 |
\ }\ |
| 238 |
\ if (yyv == NULL || yys == NULL) |
| 239 |
END |
| 240 |
if sed -f $tmp < $input > $output |
| 241 |
then echo "The edit seems to have been applied okay." |
| 242 |
else echo "The edit seems to have failed!" |
| 243 |
fi |
| 244 |
;; |
| 245 |
|
| 246 |
###################################################### |
| 247 |
# Plan still unknown |
| 248 |
*) |
| 249 |
echo "Unable to patch perly.c to allow dynamic yacc stack allocation (plan=$plan)" |
| 250 |
# just do minimal change to write $output from $input |
| 251 |
sed -e 's/Received token/ *** Received token/' $input >$output |
| 252 |
;; |
| 253 |
esac |
| 254 |
|
| 255 |
echo "" |
| 256 |
rm -rf $tmp $input |
