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@lafvax.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
22 if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then
24 # Don't expect the diff to do everything -- do some by hand
25 if test -f perly_c.diff; then
26 patch -F3 $output <perly_c.diff
27 sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \
28 -e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \
29 -e '/\[\] *= *[{]/s/^/static /' \
30 -e '/^static static/s/^static //' \
31 -e '/^#define.WORD/,/^#define.ARROW/d' \
32 -e '/^int.yydebug/,/^#define.yystacksize/d' \
33 < $output > $tmp && mv -f $tmp $output || exit 1
35 echo "If you need to debug perly.c, you need to fix up the #line"
36 echo "directives yourself."
39 elif grep 'yaccpar 1.9 (Berkeley)' $input >/dev/null 2>&1; then
40 if test -f perly.c.dif9; then
41 patch -F3 $output <perly.c.dif9
42 sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \
43 -e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \
44 -e '/\[\] *= *[{]/s/^/static /' \
45 -e '/^static static/s/^static //' \
46 -e '/^#define.WORD/,/^#define.ARROW/d' \
47 -e '/^int.yydebug/,/^#define.yystacksize/d' \
48 < $output > $tmp && mv -f $tmp $output || exit 1
50 echo "If you need to debug perly.c, you need to fix up the #line"
51 echo "directives yourself."
54 echo "Diffs from byacc-1.9 are not available."
55 echo "If you wish to proceed anyway, do"
56 echo "cp $input $output"
57 echo "cp y.tab.h perly.h"
58 echo "and re-run make. Otherwise, I will use the old perly.c"
60 # Exit with error status to stop make.
68 echo "Warning: the yacc you have used is not directly supported by perl."
69 echo "The perly.fixer script will attempt to make some changes to the generated"
70 echo "file. The changes may be incomplete and that might lead to problems later"
71 echo "(especially with complex scripts). You may need to apply the changes"
72 echo "embedded in perl.fixer (and/or perly_c.dif*) by hand."
75 # Below, we check for various characteristic yaccpar outputs.
77 # Test for BSD 4.3 version.
78 # Also tests for the SunOS 4.0.2 version
79 egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];
80 short[ ]*yys\[ *YYMAXDEPTH *\] *;
81 yyps *= *&yys\[ *-1 *\];
82 yypv *= *&yyv\[ *-1 *\];
83 if *\( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null
86 if test "$1" = "5"; then
90 if test "$plan" = "unknown"; then
91 # Test for ISC 2.2 version (probably generic SysVr3).
92 egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];
93 int[ ]*yys\[ *YYMAXDEPTH *\] *;
94 yyps *= *&yys\[ *-1 *\];
95 yypv *= *&yyv\[ *-1 *\];
96 if *\( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null
99 if test "$1" = "5"; then
107 ##################################################################
108 # The SunOS 4.0.2 version has the comparison fixed already.
109 # Also added are out of memory checks (makes porting the generated
110 # code easier) For most systems, it can't hurt. -- TD
112 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
113 echo "Assuming bsd4.3 yaccpar"
115 /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
116 int yymaxdepth = YYMAXDEPTH;\
117 YYSTYPE *yyv; /* where the values are stored */\
121 /short[ ]*yys\[ *YYMAXDEPTH *\] *;/d
123 /yyps *= *&yys\[ *-1 *\];/d
125 /yypv *= *&yyv\[ *-1 *\];/c\
127 \ New(73, yyv, yymaxdepth, YYSTYPE);\
128 \ New(73, yys, yymaxdepth, short);\
129 \ if ( !yyv || !yys ) {\
130 \ yyerror( "out of memory" );\
133 \ maxyyps = &yys[yymaxdepth];\
139 /if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\
140 \ if( ++yyps >= maxyyps ) {\
141 \ int tv = yypv - yyv;\
142 \ int ts = yyps - yys;\
145 \ Renew(yyv, yymaxdepth, YYSTYPE);\
146 \ Renew(yys, yymaxdepth, short);\
147 \ if ( !yyv || !yys ) {\
148 \ yyerror( "yacc stack overflow" );\
153 \ maxyyps = &yys[yymaxdepth];\
156 /yacc stack overflow.*}/d
157 /yacc stack overflow/,/}/d
159 if sed -f $tmp <$input >$output
160 then echo "The edit seems to have been applied okay."
161 else echo "The edit seems to have failed!"
165 #######################################################
166 "isc") # Interactive Systems 2.2 version
167 echo "Attempting to patch perly.c to allow dynamic yacc stack allocation"
168 echo "Assuming Interactive SysVr3 2.2 yaccpar"
169 # Easier to simply put whole script here than to modify the
170 # bsd script with sed.
171 # Main changes: yaccpar sometimes uses yy_ps and yy_pv
172 # which are local register variables.
173 # if(++yyps > YYMAXDEPTH) had opening brace on next line.
174 # I've kept that brace in along with a call to yyerror if
175 # realloc fails. (Actually, I just don't know how to do
176 # multi-line matches in sed.)
178 /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\
179 int yymaxdepth = YYMAXDEPTH;\
180 YYSTYPE *yyv; /* where the values are stored */\
184 /int[ ]*yys\[ *YYMAXDEPTH *\] *;/d
186 /yyps *= *&yys\[ *-1 *\];/d
188 /yypv *= *&yyv\[ *-1 *\];/c\
190 \ New(73, yyv, yymaxdepth, YYSTYPE);\
191 \ New(73, yys, yymaxdepth, int);\
192 \ maxyyps = &yys[yymaxdepth];\
197 /if *( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *)/c\
198 \ if( ++yy_ps >= maxyyps ) {\
199 \ int tv = yy_pv - yyv;\
200 \ int ts = yy_ps - yys;\
203 \ Renew(yyv, yymaxdepth, YYSTYPE);\
204 \ Renew(yys, yymaxdepth, int);\
205 \ yy_ps = yyps = yys + ts;\
206 \ yy_pv = yypv = yyv + tv;\
207 \ maxyyps = &yys[yymaxdepth];\
209 \ if (yyv == NULL || yys == NULL)
211 if sed -f $tmp < $input > $output
212 then echo "The edit seems to have been applied okay."
213 else echo "The edit seems to have failed!"
217 ######################################################
220 echo "Unable to patch perly.c to allow dynamic yacc stack allocation (plan=$plan)"
221 # just do minimal change to write $output from $input
222 sed -e 's/Received token/ *** Received token/' $input >$output