[9008] | 1 | #!/bin/sh |
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| 2 | |
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[10723] | 3 | # Fix up yacc output to allow dynamic allocation. Since perly.c |
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| 4 | # is now provided with the perl source, this should not be necessary. |
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| 5 | # |
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| 6 | # However, if the user wishes to use byacc, or wishes to try another |
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| 7 | # compiler compiler (e.g. bison or yacc), this script will get run. |
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| 8 | # See makefile run_byacc target for more details. |
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| 9 | # |
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| 10 | # Currently, only byacc version 1.8 is fully supported. |
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| 11 | # |
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[9008] | 12 | # Hacks to make it work with Interactive's SysVr3 Version 2.2 |
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| 13 | # doughera@lafvax.lafayette.edu (Andy Dougherty) 3/23/91 |
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| 14 | # |
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| 15 | # Additional information to make the BSD section work with SunOS 4.0.2 |
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| 16 | # tdinger@East.Sun.COM (Tom Dinger) 4/15/1991 |
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| 17 | |
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| 18 | input=$1 |
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| 19 | output=$2 |
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| 20 | tmp=/tmp/f$$ |
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| 21 | |
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[10723] | 22 | if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then |
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| 23 | cp $input $output |
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[14544] | 24 | # Don't expect the diff to do everything -- do some by hand |
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| 25 | if test -f perly_c.diff; then |
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| 26 | patch -F3 $output <perly_c.diff |
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| 27 | sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \ |
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| 28 | -e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \ |
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| 29 | -e '/\[\] *= *[{]/s/^/static /' \ |
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| 30 | -e '/^static static/s/^static //' \ |
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| 31 | -e '/^#define.WORD/,/^#define.ARROW/d' \ |
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| 32 | -e '/^int.yydebug/,/^#define.yystacksize/d' \ |
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| 33 | < $output > $tmp && mv -f $tmp $output || exit 1 |
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[10723] | 34 | rm -rf $input |
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[14544] | 35 | echo "If you need to debug perly.c, you need to fix up the #line" |
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| 36 | echo "directives yourself." |
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[10723] | 37 | fi |
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| 38 | exit |
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| 39 | elif grep 'yaccpar 1.9 (Berkeley)' $input >/dev/null 2>&1; then |
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| 40 | if test -f perly.c.dif9; then |
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| 41 | patch -F3 $output <perly.c.dif9 |
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[14544] | 42 | sed -e '/^[ ]*printf("yydebug:/s/printf(/PerlIO_printf(Perl_debug_log, /' \ |
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| 43 | -e '/^#line /s/"y[.]tab[.]c"/"perly.c"/' \ |
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| 44 | -e '/\[\] *= *[{]/s/^/static /' \ |
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| 45 | -e '/^static static/s/^static //' \ |
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| 46 | -e '/^#define.WORD/,/^#define.ARROW/d' \ |
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| 47 | -e '/^int.yydebug/,/^#define.yystacksize/d' \ |
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| 48 | < $output > $tmp && mv -f $tmp $output || exit 1 |
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[10723] | 49 | rm -rf $input |
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[14544] | 50 | echo "If you need to debug perly.c, you need to fix up the #line" |
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| 51 | echo "directives yourself." |
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[10723] | 52 | exit 0 |
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| 53 | else |
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| 54 | echo "Diffs from byacc-1.9 are not available." |
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| 55 | echo "If you wish to proceed anyway, do" |
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| 56 | echo "cp $input $output" |
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| 57 | echo "cp y.tab.h perly.h" |
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| 58 | echo "and re-run make. Otherwise, I will use the old perly.c" |
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| 59 | touch perly.c |
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| 60 | # Exit with error status to stop make. |
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| 61 | exit 1 |
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| 62 | fi |
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| 63 | fi |
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| 64 | |
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[9008] | 65 | plan="unknown" |
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| 66 | |
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[10723] | 67 | echo "" |
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| 68 | echo "Warning: the yacc you have used is not directly supported by perl." |
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| 69 | echo "The perly.fixer script will attempt to make some changes to the generated" |
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| 70 | echo "file. The changes may be incomplete and that might lead to problems later" |
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| 71 | echo "(especially with complex scripts). You may need to apply the changes" |
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[14544] | 72 | echo "embedded in perl.fixer (and/or perly_c.dif*) by hand." |
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[10723] | 73 | echo "" |
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| 74 | |
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| 75 | # Below, we check for various characteristic yaccpar outputs. |
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| 76 | |
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[9008] | 77 | # Test for BSD 4.3 version. |
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| 78 | # Also tests for the SunOS 4.0.2 version |
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| 79 | egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\]; |
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| 80 | short[ ]*yys\[ *YYMAXDEPTH *\] *; |
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| 81 | yyps *= *&yys\[ *-1 *\]; |
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| 82 | yypv *= *&yyv\[ *-1 *\]; |
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[10723] | 83 | if *\( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null |
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[9008] | 84 | |
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| 85 | set `wc -l $tmp` |
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| 86 | if test "$1" = "5"; then |
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| 87 | plan="bsd43" |
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| 88 | fi |
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| 89 | |
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| 90 | if test "$plan" = "unknown"; then |
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[10723] | 91 | # Test for ISC 2.2 version (probably generic SysVr3). |
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[9008] | 92 | egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\]; |
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| 93 | int[ ]*yys\[ *YYMAXDEPTH *\] *; |
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| 94 | yyps *= *&yys\[ *-1 *\]; |
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| 95 | yypv *= *&yyv\[ *-1 *\]; |
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[10723] | 96 | if *\( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null |
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[9008] | 97 | |
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| 98 | set `wc -l $tmp` |
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| 99 | if test "$1" = "5"; then |
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| 100 | plan="isc" |
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| 101 | fi |
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| 102 | fi |
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| 103 | |
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[10723] | 104 | # ------ |
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| 105 | |
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[9008] | 106 | case "$plan" in |
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| 107 | ################################################################## |
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| 108 | # The SunOS 4.0.2 version has the comparison fixed already. |
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| 109 | # Also added are out of memory checks (makes porting the generated |
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| 110 | # code easier) For most systems, it can't hurt. -- TD |
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| 111 | "bsd43") |
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[14544] | 112 | echo "Attempting to patch perly.c to allow dynamic yacc stack allocation" |
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[9008] | 113 | echo "Assuming bsd4.3 yaccpar" |
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| 114 | cat >$tmp <<'END' |
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| 115 | /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\ |
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| 116 | int yymaxdepth = YYMAXDEPTH;\ |
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| 117 | YYSTYPE *yyv; /* where the values are stored */\ |
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| 118 | short *yys;\ |
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| 119 | short *maxyyps; |
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| 120 | |
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| 121 | /short[ ]*yys\[ *YYMAXDEPTH *\] *;/d |
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| 122 | |
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| 123 | /yyps *= *&yys\[ *-1 *\];/d |
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| 124 | |
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| 125 | /yypv *= *&yyv\[ *-1 *\];/c\ |
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| 126 | \ if (!yyv) {\ |
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[14544] | 127 | \ New(73, yyv, yymaxdepth, YYSTYPE);\ |
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| 128 | \ New(73, yys, yymaxdepth, short);\ |
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[9008] | 129 | \ if ( !yyv || !yys ) {\ |
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| 130 | \ yyerror( "out of memory" );\ |
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| 131 | \ return(1);\ |
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| 132 | \ }\ |
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| 133 | \ maxyyps = &yys[yymaxdepth];\ |
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| 134 | \ }\ |
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| 135 | \ yyps = &yys[-1];\ |
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| 136 | \ yypv = &yyv[-1]; |
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| 137 | |
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| 138 | |
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| 139 | /if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\ |
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| 140 | \ if( ++yyps >= maxyyps ) {\ |
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| 141 | \ int tv = yypv - yyv;\ |
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| 142 | \ int ts = yyps - yys;\ |
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| 143 | \ |
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| 144 | \ yymaxdepth *= 2;\ |
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[14544] | 145 | \ Renew(yyv, yymaxdepth, YYSTYPE);\ |
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| 146 | \ Renew(yys, yymaxdepth, short);\ |
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[9008] | 147 | \ if ( !yyv || !yys ) {\ |
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| 148 | \ yyerror( "yacc stack overflow" );\ |
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| 149 | \ return(1);\ |
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| 150 | \ }\ |
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| 151 | \ yyps = yys + ts;\ |
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| 152 | \ yypv = yyv + tv;\ |
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| 153 | \ maxyyps = &yys[yymaxdepth];\ |
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| 154 | \ } |
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| 155 | |
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| 156 | /yacc stack overflow.*}/d |
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| 157 | /yacc stack overflow/,/}/d |
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| 158 | END |
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[10723] | 159 | if sed -f $tmp <$input >$output |
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| 160 | then echo "The edit seems to have been applied okay." |
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| 161 | else echo "The edit seems to have failed!" |
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| 162 | fi |
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| 163 | ;; |
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[9008] | 164 | |
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| 165 | ####################################################### |
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| 166 | "isc") # Interactive Systems 2.2 version |
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[14544] | 167 | echo "Attempting to patch perly.c to allow dynamic yacc stack allocation" |
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[9008] | 168 | echo "Assuming Interactive SysVr3 2.2 yaccpar" |
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| 169 | # Easier to simply put whole script here than to modify the |
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| 170 | # bsd script with sed. |
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| 171 | # Main changes: yaccpar sometimes uses yy_ps and yy_pv |
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| 172 | # which are local register variables. |
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| 173 | # if(++yyps > YYMAXDEPTH) had opening brace on next line. |
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| 174 | # I've kept that brace in along with a call to yyerror if |
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| 175 | # realloc fails. (Actually, I just don't know how to do |
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| 176 | # multi-line matches in sed.) |
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| 177 | cat > $tmp << 'END' |
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| 178 | /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\ |
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| 179 | int yymaxdepth = YYMAXDEPTH;\ |
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| 180 | YYSTYPE *yyv; /* where the values are stored */\ |
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| 181 | int *yys;\ |
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| 182 | int *maxyyps; |
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| 183 | |
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| 184 | /int[ ]*yys\[ *YYMAXDEPTH *\] *;/d |
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| 185 | |
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| 186 | /yyps *= *&yys\[ *-1 *\];/d |
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| 187 | |
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| 188 | /yypv *= *&yyv\[ *-1 *\];/c\ |
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| 189 | \ if (!yyv) {\ |
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[14544] | 190 | \ New(73, yyv, yymaxdepth, YYSTYPE);\ |
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| 191 | \ New(73, yys, yymaxdepth, int);\ |
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[9008] | 192 | \ maxyyps = &yys[yymaxdepth];\ |
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| 193 | \ }\ |
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| 194 | \ yyps = &yys[-1];\ |
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| 195 | \ yypv = &yyv[-1]; |
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| 196 | |
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| 197 | /if *( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *)/c\ |
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| 198 | \ if( ++yy_ps >= maxyyps ) {\ |
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| 199 | \ int tv = yy_pv - yyv;\ |
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| 200 | \ int ts = yy_ps - yys;\ |
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| 201 | \ |
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| 202 | \ yymaxdepth *= 2;\ |
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[14544] | 203 | \ Renew(yyv, yymaxdepth, YYSTYPE);\ |
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| 204 | \ Renew(yys, yymaxdepth, int);\ |
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[9008] | 205 | \ yy_ps = yyps = yys + ts;\ |
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| 206 | \ yy_pv = yypv = yyv + tv;\ |
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| 207 | \ maxyyps = &yys[yymaxdepth];\ |
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| 208 | \ }\ |
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| 209 | \ if (yyv == NULL || yys == NULL) |
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| 210 | END |
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[10723] | 211 | if sed -f $tmp < $input > $output |
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| 212 | then echo "The edit seems to have been applied okay." |
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| 213 | else echo "The edit seems to have failed!" |
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| 214 | fi |
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| 215 | ;; |
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[9008] | 216 | |
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| 217 | ###################################################### |
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| 218 | # Plan still unknown |
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[10723] | 219 | *) |
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| 220 | echo "Unable to patch perly.c to allow dynamic yacc stack allocation (plan=$plan)" |
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| 221 | # just do minimal change to write $output from $input |
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| 222 | sed -e 's/Received token/ *** Received token/' $input >$output |
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| 223 | ;; |
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[9008] | 224 | esac |
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| 225 | |
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[10723] | 226 | echo "" |
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[9008] | 227 | rm -rf $tmp $input |
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