[Encode] 1.77 Released
[p5sagit/p5-mst-13.2.git] / perly.fixer
CommitLineData
fe14fcc3 1#!/bin/sh
2
a0d0e21e 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.
7b57b0ea 5#
a0d0e21e 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.
25c49cb6 8# See makefile run_byacc target for more details.
a0d0e21e 9#
25c49cb6 10# Currently, only byacc version 1.8 is fully supported.
a0d0e21e 11#
35c8bce7 12# Hacks to make it work with Interactive's SysVr3 Version 2.2
13# doughera@lafvax.lafayette.edu (Andy Dougherty) 3/23/91
9ef589d8 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
7b57b0ea 17#
18# Also edit some practices gcc -Wall finds questionable.
19#
35c8bce7 20
2b21cd67 21gnupatch=patch
0ddaf513 22. ./config.sh
2b21cd67 23
fe14fcc3 24input=$1
25output=$2
26tmp=/tmp/f$$
27
dae2d13f 28inputh=`echo $input|sed 's:\.c$:.h:'`
29if grep '^#ifdef PERL_CORE' $inputh; then
30 : never mind
31else
32 echo "#ifdef PERL_CORE" > $tmp
33 sed -e 's:^typedef union {:#endif /* PERL_CORE */\
34\
35typedef union {:' $inputh >> $tmp
36 mv -f $tmp $inputh
37fi
38
a0d0e21e 39if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then
93a17b20 40 cp $input $output
09bef843 41 # Don't expect the diff to do everything -- do some by hand
e262e9be 42 if test -f perly_c.diff; then
2b21cd67 43 $gnupatch -F3 $output <perly_c.diff
09bef843 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' \
7b57b0ea 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 */|' \
0ddaf513 55 -e 's|deprecate(|deprecate_old(|' \
09bef843 56 < $output > $tmp && mv -f $tmp $output || exit 1
a0d0e21e 57 rm -rf $input
09bef843 58 echo "If you need to debug perly.c, you need to fix up the #line"
59 echo "directives yourself."
a0d0e21e 60 fi
93a17b20 61 exit
a0d0e21e 62elif grep 'yaccpar 1.9 (Berkeley)' $input >/dev/null 2>&1; then
63 if test -f perly.c.dif9; then
2b21cd67 64 $gnupatch -F3 $output <perly.c.dif9
09bef843 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' \
7b57b0ea 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 */|' \
0ddaf513 76 -e 's|deprecate(|deprecate_old(|' \
09bef843 77 < $output > $tmp && mv -f $tmp $output || exit 1
a0d0e21e 78 rm -rf $input
09bef843 79 echo "If you need to debug perly.c, you need to fix up the #line"
80 echo "directives yourself."
a0d0e21e 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
93a17b20 92fi
93
35c8bce7 94plan="unknown"
95
25c49cb6 96echo ""
97echo "Warning: the yacc you have used is not directly supported by perl."
98echo "The perly.fixer script will attempt to make some changes to the generated"
99echo "file. The changes may be incomplete and that might lead to problems later"
100echo "(especially with complex scripts). You may need to apply the changes"
e262e9be 101echo "embedded in perl.fixer (and/or perly_c.dif*) by hand."
25c49cb6 102echo ""
103
104# Below, we check for various characteristic yaccpar outputs.
a0d0e21e 105
35c8bce7 106# Test for BSD 4.3 version.
9ef589d8 107# Also tests for the SunOS 4.0.2 version
fe14fcc3 108egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];
35c8bce7 109short[ ]*yys\[ *YYMAXDEPTH *\] *;
fe14fcc3 110yyps *= *&yys\[ *-1 *\];
111yypv *= *&yyv\[ *-1 *\];
a0d0e21e 112if *\( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null
35c8bce7 113
fe14fcc3 114set `wc -l $tmp`
35c8bce7 115if test "$1" = "5"; then
116 plan="bsd43"
117fi
fe14fcc3 118
35c8bce7 119if test "$plan" = "unknown"; then
a0d0e21e 120 # Test for ISC 2.2 version (probably generic SysVr3).
35c8bce7 121egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];
122int[ ]*yys\[ *YYMAXDEPTH *\] *;
123yyps *= *&yys\[ *-1 *\];
124yypv *= *&yyv\[ *-1 *\];
a0d0e21e 125if *\( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null
35c8bce7 126
127 set `wc -l $tmp`
128 if test "$1" = "5"; then
129 plan="isc"
130 fi
131fi
fe14fcc3 132
25c49cb6 133# ------
134
35c8bce7 135case "$plan" in
9ef589d8 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
35c8bce7 140 "bsd43")
09bef843 141 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
35c8bce7 142 echo "Assuming bsd4.3 yaccpar"
143 cat >$tmp <<'END'
fe14fcc3 144/YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
145int yymaxdepth = YYMAXDEPTH;\
146YYSTYPE *yyv; /* where the values are stored */\
147short *yys;\
148short *maxyyps;
149
150/short[ ]*yys\[ *YYMAXDEPTH *\] *;/d
151
152/yyps *= *&yys\[ *-1 *\];/d
153
154/yypv *= *&yyv\[ *-1 *\];/c\
155\ if (!yyv) {\
8c52afec 156\ New(73, yyv, yymaxdepth, YYSTYPE);\
157\ New(73, yys, yymaxdepth, short);\
9ef589d8 158\ if ( !yyv || !yys ) {\
159\ yyerror( "out of memory" );\
160\ return(1);\
161\ }\
fe14fcc3 162\ maxyyps = &yys[yymaxdepth];\
163\ }\
164\ yyps = &yys[-1];\
165\ yypv = &yyv[-1];
166
167
9ef589d8 168/if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\
fe14fcc3 169\ if( ++yyps >= maxyyps ) {\
170\ int tv = yypv - yyv;\
171\ int ts = yyps - yys;\
172\
173\ yymaxdepth *= 2;\
8c52afec 174\ Renew(yyv, yymaxdepth, YYSTYPE);\
175\ Renew(yys, yymaxdepth, short);\
9ef589d8 176\ if ( !yyv || !yys ) {\
177\ yyerror( "yacc stack overflow" );\
178\ return(1);\
179\ }\
fe14fcc3 180\ yyps = yys + ts;\
181\ yypv = yyv + tv;\
182\ maxyyps = &yys[yymaxdepth];\
183\ }
184
185/yacc stack overflow.*}/d
186/yacc stack overflow/,/}/d
187END
25c49cb6 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 ;;
35c8bce7 193
194 #######################################################
195 "isc") # Interactive Systems 2.2 version
09bef843 196 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
35c8bce7 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\
208int yymaxdepth = YYMAXDEPTH;\
209YYSTYPE *yyv; /* where the values are stored */\
210int *yys;\
211int *maxyyps;
212
213/int[ ]*yys\[ *YYMAXDEPTH *\] *;/d
214
215/yyps *= *&yys\[ *-1 *\];/d
216
217/yypv *= *&yyv\[ *-1 *\];/c\
218\ if (!yyv) {\
8c52afec 219\ New(73, yyv, yymaxdepth, YYSTYPE);\
220\ New(73, yys, yymaxdepth, int);\
35c8bce7 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;\
8c52afec 232\ Renew(yyv, yymaxdepth, YYSTYPE);\
233\ Renew(yys, yymaxdepth, int);\
35c8bce7 234\ yy_ps = yyps = yys + ts;\
235\ yy_pv = yypv = yyv + tv;\
236\ maxyyps = &yys[yymaxdepth];\
237\ }\
238\ if (yyv == NULL || yys == NULL)
239END
25c49cb6 240 if sed -f $tmp < $input > $output
241 then echo "The edit seems to have been applied okay."
242 else echo "The edit seems to have failed!"
243 fi
244 ;;
35c8bce7 245
246 ######################################################
247 # Plan still unknown
25c49cb6 248 *)
249 echo "Unable to patch perly.c to allow dynamic yacc stack allocation (plan=$plan)"
250 # just do minimal change to write $output from $input
251 sed -e 's/Received token/ *** Received token/' $input >$output
252 ;;
35c8bce7 253esac
fe14fcc3 254
25c49cb6 255echo ""
fe14fcc3 256rm -rf $tmp $input