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/*
* Copyright 2001-2018 Adrian Thurston <thurston@colm.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "switchgoto.h"
void SwitchGoto::LOCATE_COND()
{
if ( red->condSpaceList.length() > 0 ) {
std::stringstream success, error;
out <<
" " << ckeys << " = " << OFFSET( ARR_REF( condKeys ), ARR_REF( transOffsets ) + "[" + trans.ref() + "]" ) << ";\n"
" " << klen << " = " << CAST( "int" ) << ARR_REF( transLengths ) << "[" << trans << "];\n"
" " << cond << " = " << CAST( UINT() ) << ARR_REF( transOffsets ) << "[" << trans << "];\n"
"\n";
out <<
" " << cpc << " = 0;\n";
if ( red->condSpaceList.length() > 0 )
COND_EXEC( ARR_REF( transCondSpaces ) + "[" + trans.ref() + "]" );
success <<
cond << " += " << CAST( UINT() ) << "(_mid - " << ckeys << ");\n";
error <<
cond << " = " << errCondOffset << ";\n";
out <<
" {\n"
" " << INDEX( ARR_TYPE( condKeys ), "_lower" ) << " = " << ckeys << ";\n"
" " << INDEX( ARR_TYPE( condKeys ), "_upper" ) << " = " << ckeys << " + " << klen << " - 1;\n"
" " << INDEX( ARR_TYPE( condKeys ), "_mid" ) << ";\n"
" while ( " << TRUE() << " ) {\n"
" if ( _upper < _lower ) {\n"
" " << error.str() << "\n"
" break;\n"
" }\n"
"\n"
" _mid = _lower + ((_upper-_lower) >> 1);\n"
" if ( " << cpc << " < " << CAST("int") << DEREF( ARR_REF( condKeys ), "_mid" ) << " )\n"
" _upper = _mid - 1;\n"
" else if ( " << cpc << " > " << CAST( "int" ) << DEREF( ARR_REF( condKeys ), "_mid" ) << " )\n"
" _lower = _mid + 1;\n"
" else {\n"
" " << success.str() << "\n"
" break;\n"
" }\n"
" }\n"
" }\n"
;
}
}
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