#! /bin/sh

#

# Copyright 2000-2005 Sun Microsystems, Inc.  All Rights Reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Sun designates this

# particular file as subject to the "Classpath" exception as provided

# by Sun in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

# CA 95054 USA or visit www.sun.com if you need additional information or

# have any questions.

#

# Generate concrete buffer classes

# Required environment variables

#   NAWK SED SPP    To invoke tools

#   TYPE            Primitive type

#   SRC             Source file

#   DST             Destination file

#

# Optional environment variables

#   RW              Mutability: R(ead only), W(ritable)

#   BO              Byte order: B(ig), L(ittle), S(wapped), U(nswapped)

#   BIN             Defined => generate binary-data access methods

type=$TYPE

rw=$RW

rwkey=XX

case $type in

  char)  fulltype=character;;

  *)     fulltype=$type;;

esac

case $type in

  byte)           LBPV=0;;

  char | short)   LBPV=1;;

  int | float)    LBPV=2;;

  long | double)  LBPV=3;;

esac

typesAndBits() {

  type="$1"; BO="$2"

  memtype=$type; swaptype=$type; frombits=; tobits=

  case $type in

    float)   memtype=int

             if [ x$BO != xU ]; then

	       swaptype=int

	       fromBits=Float.intBitsToFloat

	       toBits=Float.floatToRawIntBits

	     fi;;

    double)  memtype=long

             if [ x$BO != xU ]; then

	       swaptype=long

	       fromBits=Double.longBitsToDouble

	       toBits=Double.doubleToRawLongBits

	     fi;;

  esac

  echo memtype=$memtype swaptype=$swaptype fromBits=$fromBits toBits=$toBits

  echo $type $fulltype $memtype $swaptype \

  | $NAWK '{ type = $1; fulltype = $2; memtype = $3; swaptype = $4;

	     x = substr(type, 1, 1);

	     Type = toupper(x) substr(type, 2);

	     Fulltype = toupper(x) substr(fulltype, 2);

	     Memtype = toupper(substr(memtype, 1, 1)) substr(memtype, 2);

	     Swaptype = toupper(substr(swaptype, 1, 1)) substr(swaptype, 2);

	     printf("Type=%s x=%s Fulltype=%s Memtype=%s Swaptype=%s ",

		    Type, x, Fulltype, Memtype, Swaptype); }'

  echo "swap=`if [ x$BO = xS ]; then echo Bits.swap; fi`"

}

eval `typesAndBits $type $BO`

a=`if [ $type = int ]; then echo an; else echo a; fi`

A=`if [ $type = int ]; then echo An; else echo A; fi`

if [ "x$rw" = xR ]; then rwkey=ro; else rwkey=rw; fi

set -e

$SPP <$SRC >$DST \

  -K$type \

  -Dtype=$type \

  -DType=$Type \

  -Dfulltype=$fulltype \

  -DFulltype=$Fulltype \

  -Dx=$x \

  -Dmemtype=$memtype \

  -DMemtype=$Memtype \

  -DSwaptype=$Swaptype \

  -DfromBits=$fromBits \

  -DtoBits=$toBits \

  -DLG_BYTES_PER_VALUE=$LBPV \

  -DBYTES_PER_VALUE="(1 << $LBPV)" \

  -DBO=$BO \

  -Dswap=$swap \

  -DRW=$rw \

  -K$rwkey \

  -Da=$a \

  -DA=$A \

  -Kbo$BO

if [ $BIN ]; then

  genBinOps() {

    type="$1"

    Type=`echo $1 | $NAWK '{ print toupper(substr($1, 1, 1)) substr($1, 2) }'`

    fulltype="$2"

    LBPV="$3"

    nbytes="$4"

    nbytesButOne="$5"

    a=`if [ $type = int ]; then echo an; else echo a; fi`

    src=$6

    eval `typesAndBits $type`

    $SPP <$src \

      -Dtype=$type \

      -DType=$Type \

      -Dfulltype=$fulltype \

      -Dmemtype=$memtype \

      -DMemtype=$Memtype \

      -DfromBits=$fromBits \

      -DtoBits=$toBits \

      -DLG_BYTES_PER_VALUE=$LBPV \

      -DBYTES_PER_VALUE="(1 << $LBPV)" \

      -Dnbytes=$nbytes \

      -DnbytesButOne=$nbytesButOne \

      -DRW=$rw \

      -K$rwkey \

      -Da=$a \

      -be

  }

  mv $DST $DST.tmp

  sed -e '/#BIN/,$d' <$DST.tmp >$DST

  rm -f $DST.tmp

  binops=`dirname $SRC`/`basename $SRC .java`-bin.java

  genBinOps char character 1 two one $binops >>$DST

  genBinOps short short 1 two one $binops >>$DST

  genBinOps int integer 2 four three $binops >>$DST

  genBinOps long long 3 eight seven $binops >>$DST

  genBinOps float float 2 four three $binops >>$DST

  genBinOps double double 3 eight seven $binops >>$DST

  echo '}' >>$DST

fi