bin/sh/mknodes.sh

   1 #! /bin/sh
   2 #       $NetBSD: mknodes.sh,v 1.2 2008/04/29 06:53:00 martin Exp $
   3
   4 # Copyright (c) 2003 The NetBSD Foundation, Inc.
   5 # All rights reserved.
   6 #
   7 # This code is derived from software contributed to The NetBSD Foundation
   8 # by David Laight.
   9 #
  10 # Redistribution and use in source and binary forms, with or without
  11 # modification, are permitted provided that the following conditions
  12 # are met:
  13 # 1. Redistributions of source code must retain the above copyright
  14 #    notice, this list of conditions and the following disclaimer.
  15 # 2. Redistributions in binary form must reproduce the above copyright
  16 #    notice, this list of conditions and the following disclaimer in the
  17 #    documentation and/or other materials provided with the distribution.
  18 #
  19 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29 # POSSIBILITY OF SUCH DAMAGE.
  30
  31 nodetypes=$1
  32 nodes_pat=$2
  33 objdir="$3"
  34
  35 exec <$nodetypes
  36 exec >$objdir/nodes.h.tmp
  37
  38 echo "/*"
  39 echo " * This file was generated by mknodes.sh"
  40 echo " */"
  41 echo
  42
  43 tagno=0
  44 while IFS=; read -r line; do
  45         line="${line%%#*}"
  46         IFS='   '
  47         set -- $line
  48         IFS=
  49         [ -z "$2" ] && continue
  50         case "$line" in
  51         ["      "]* )
  52                 IFS=' '
  53                 [ $field = 0 ] && struct_list="$struct_list $struct"
  54                 eval field_${struct}_$field=\"\$*\"
  55                 eval numfld_$struct=\$field
  56                 field=$(($field + 1))
  57                 ;;
  58         * )
  59                 define=$1
  60                 struct=$2
  61                 echo "#define $define $tagno"
  62                 tagno=$(($tagno + 1))
  63                 eval define_$struct=\"\$define_$struct \$define\"
  64                 struct_define="$struct_define $struct"
  65                 field=0
  66                 ;;
  67         esac
  68 done
  69
  70 echo
  71
  72 IFS=' '
  73 for struct in $struct_list; do
  74         echo
  75         echo
  76         echo "struct $struct {"
  77         field=0
  78         while
  79                 eval line=\"\$field_${struct}_$field\"
  80                 field=$(($field + 1))
  81                 [ -n "$line" ]
  82         do
  83                 IFS=' '
  84                 set -- $line
  85                 name=$1
  86                 case $2 in
  87                 nodeptr ) type="union node *";;
  88                 nodelist ) type="struct nodelist *";;
  89                 string ) type="char *";;
  90                 int ) type="int ";;
  91                 * ) name=; shift 2; type="$*";;
  92                 esac
  93                 echo "      $type$name;"
  94         done
  95         echo "};"
  96 done
  97
  98 echo
  99 echo
 100 echo "union node {"
 101 echo "      int type;"
 102 for struct in $struct_list; do
 103         echo "      struct $struct $struct;"
 104 done
 105 echo "};"
 106 echo
 107 echo
 108 echo "struct nodelist {"
 109 echo "  struct nodelist *next;"
 110 echo "  union node *n;"
 111 echo "};"
 112 echo
 113 echo
 114 echo "union node *copyfunc(union node *);"
 115 echo "void freefunc(union node *);"
 116
 117 mv $objdir/nodes.h.tmp $objdir/nodes.h || exit 1
 118
 119 exec <$nodes_pat
 120 exec >$objdir/nodes.c.tmp
 121
 122 echo "/*"
 123 echo " * This file was generated by mknodes.sh"
 124 echo " */"
 125 echo
 126
 127 while IFS=; read -r line; do
 128         IFS='   '
 129         set -- $line
 130         IFS=
 131         case "$1" in
 132         '%SIZES' )
 133                 echo "static const short nodesize[$tagno] = {"
 134                 IFS=' '
 135                 for struct in $struct_define; do
 136                         echo "      SHELL_ALIGN(sizeof (struct $struct)),"
 137                 done
 138                 echo "};"
 139                 ;;
 140         '%CALCSIZE' )
 141                 echo "      if (n == NULL)"
 142                 echo "      return;"
 143                 echo "      funcblocksize += nodesize[n->type];"
 144                 echo "      switch (n->type) {"
 145                 IFS=' '
 146                 for struct in $struct_list; do
 147                         eval defines=\"\$define_$struct\"
 148                         for define in $defines; do
 149                                 echo "      case $define:"
 150                         done
 151                         eval field=\$numfld_$struct
 152                         while
 153                                 [ $field != 0 ]
 154                         do
 155                                 eval line=\"\$field_${struct}_$field\"
 156                                 field=$(($field - 1))
 157                                 IFS=' '
 158                                 set -- $line
 159                                 name=$1
 160                                 cl=")"
 161                                 case $2 in
 162                                 nodeptr ) fn=calcsize;;
 163                                 nodelist ) fn=sizenodelist;;
 164                                 string ) fn="funcstringsize += strlen"
 165                                         cl=") + 1";;
 166                                 * ) continue;;
 167                                 esac
 168                                 echo "      ${fn}(n->$struct.$name${cl};"
 169                         done
 170                         echo "      break;"
 171                 done
 172                 echo "      };"
 173                 ;;
 174         '%COPY' )
 175                 echo "      if (n == NULL)"
 176                 echo "      return NULL;"
 177                 echo "      new = funcblock;"
 178                 echo "      funcblock = (char *) funcblock + nodesize[n->type];"
 179                 echo "      switch (n->type) {"
 180                 IFS=' '
 181                 for struct in $struct_list; do
 182                         eval defines=\"\$define_$struct\"
 183                         for define in $defines; do
 184                                 echo "      case $define:"
 185                         done
 186                         eval field=\$numfld_$struct
 187                         while
 188                                 [ $field != 0 ]
 189                         do
 190                                 eval line=\"\$field_${struct}_$field\"
 191                                 field=$(($field - 1))
 192                                 IFS=' '
 193                                 set -- $line
 194                                 name=$1
 195                                 case $2 in
 196                                 nodeptr ) fn="copynode(";;
 197                                 nodelist ) fn="copynodelist(";;
 198                                 string ) fn="nodesavestr(";;
 199                                 int ) fn=;;
 200                                 * ) continue;;
 201                                 esac
 202                                 f="$struct.$name"
 203                                 echo "      new->$f = ${fn}n->$f${fn:+)};"
 204                         done
 205                         echo "      break;"
 206                 done
 207                 echo "      };"
 208                 echo "      new->type = n->type;"
 209                 ;;
 210         * ) echo "$line";;
 211         esac
 212 done
 213
 214 mv $objdir/nodes.c.tmp $objdir/nodes.c || exit 1