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#!/bin/bash
#
# Copyright (c) 1994, 2016, Oracle and/or its affiliates. All Rights Reserved.
# Copyright (c) 2017, MariaDB Corporation.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; version 2 of the License.
#
# This program 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 for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
#
# generate lexer files from flex input files.
set -eu
TMPFILE=_flex_tmp.cc
OUTFILE=lexyy.cc
flex -o $TMPFILE pars0lex.l
# AIX needs its includes done in a certain order, so include "univ.i" first
# to be sure we get it right.
echo '#include "univ.i"' > $OUTFILE
# flex assigns a pointer to an int in one place without a cast, resulting in
# a warning on Win64. Add the cast. Also define some symbols as static.
sed -e '
s/'"$TMPFILE"'/'"$OUTFILE"'/;
s/^void yyset_extra *(YY_EXTRA_TYPE *user_defined *);//
s/\(int offset = \)\((yy_c_buf_p) - (yytext_ptr)\);/\1(int)(\2);/;
s/\(void yy\(restart\|_\(delete\|flush\)_buffer\)\)/static \1/;
s/\(void yy_switch_to_buffer\)/MY_ATTRIBUTE((unused)) static \1/;
s/\(void yy\(push\|pop\)_buffer_state\)/MY_ATTRIBUTE((unused)) static \1/;
s/\(YY_BUFFER_STATE yy_create_buffer\)/static \1/;
s/\(\(int\|void\) yy[gs]et_\)/MY_ATTRIBUTE((unused)) static \1/;
s/\(void \*\?yy\(\(re\)\?alloc\|free\)\)/static \1/;
s/extern int yy\(leng\|_flex_debug\|lineno\);//;
s/\(int yy\(leng\|lineno\|_flex_debug\)\)/static \1/;
s/\(int yylex_destroy\)/MY_ATTRIBUTE((unused)) static \1/;
s/^\(\(FILE\|char\) *\* *yyget\)/MY_ATTRIBUTE((unused)) static \1/;
s/^extern \(\(FILE\|char\) *\* *yy\).*//;
s/^\(FILE\|char\) *\* *yy/static &/;
' < $TMPFILE >> $OUTFILE
rm $TMPFILE
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