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.
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.
10 # Currently, only byacc version 1.8 is fully supported.
12 # Hacks to make it work with Interactive's SysVr3 Version 2.2
13 # doughera@lafayette.edu (Andy Dougherty) 3/23/91
15 # Additional information to make the BSD section work with SunOS 4.0.2
16 # tdinger@East.Sun.COM (Tom Dinger) 4/15/1991
18 # Also edit some practices gcc -Wall finds questionable.
28 inputh=`echo $input|sed 's:\.c$:.h:'`
29 if grep '^#ifdef PERL_CORE' $inputh; then
32 echo "#ifdef PERL_CORE" > $tmp
33 sed -e 's:^typedef union {:#endif /* PERL_CORE */\
35 typedef union {:' $inputh >> $tmp
39 if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then
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
58 echo "If you need to debug perly.c, you need to fix up the #line"
59 echo "directives yourself."
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
79 echo "If you need to debug perly.c, you need to fix up the #line"
80 echo "directives yourself."
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"
89 # Exit with error status to stop make.
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."
104 # Below, we check for various characteristic yaccpar outputs.
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
115 if test "$1" = "5"; then
119 if test "$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
128 if test "$1" = "5"; then
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
141 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
142 echo "Assuming bsd4.3 yaccpar"
144 /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
145 int yymaxdepth = YYMAXDEPTH;\
146 YYSTYPE *yyv; /* where the values are stored */\
150 /short[ ]*yys\[ *YYMAXDEPTH *\] *;/d
152 /yyps *= *&yys\[ *-1 *\];/d
154 /yypv *= *&yyv\[ *-1 *\];/c\
156 \ New(73, yyv, yymaxdepth, YYSTYPE);\
157 \ New(73, yys, yymaxdepth, short);\
158 \ if ( !yyv || !yys ) {\
159 \ yyerror( "out of memory" );\
162 \ maxyyps = &yys[yymaxdepth];\
168 /if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\
169 \ if( ++yyps >= maxyyps ) {\
170 \ int tv = yypv - yyv;\
171 \ int ts = yyps - yys;\
174 \ Renew(yyv, yymaxdepth, YYSTYPE);\
175 \ Renew(yys, yymaxdepth, short);\
176 \ if ( !yyv || !yys ) {\
177 \ yyerror( "yacc stack overflow" );\
182 \ maxyyps = &yys[yymaxdepth];\
185 /yacc stack overflow.*}/d
186 /yacc stack overflow/,/}/d
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!"
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.)
207 /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
208 int yymaxdepth = YYMAXDEPTH;\
209 YYSTYPE *yyv; /* where the values are stored */\
213 /int[ ]*yys\[ *YYMAXDEPTH *\] *;/d
215 /yyps *= *&yys\[ *-1 *\];/d
217 /yypv *= *&yyv\[ *-1 *\];/c\
219 \ New(73, yyv, yymaxdepth, YYSTYPE);\
220 \ New(73, yys, yymaxdepth, int);\
221 \ maxyyps = &yys[yymaxdepth];\
226 /if *( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *)/c\
227 \ if( ++yy_ps >= maxyyps ) {\
228 \ int tv = yy_pv - yyv;\
229 \ int ts = yy_ps - yys;\
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];\
238 \ if (yyv == NULL || yys == NULL)
240 if sed -f $tmp < $input > $output
241 then echo "The edit seems to have been applied okay."
242 else echo "The edit seems to have failed!"
246 ######################################################
249 echo "Unable to patch perly.c to allow dynamic yacc stack allocation (plan=$plan)"
250 # just do minimal change to write $output from $input
251 sed -e 's/Received token/ *** Received token/' $input >$output