/*
* Copyright 2004-2006 Adrian Thurston <thurston@complang.org>
* 2004 Erich Ocean <eric.ocean@ampede.com>
* 2005 Alan West <alan@alanz.com>
*/
/* This file is part of Ragel.
*
* Ragel 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; either version 2 of the License, or
* (at your option) any later version.
*
* Ragel 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 Ragel; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ragel.h"
#include "gofflat.h"
#include "redfsm.h"
#include "gendata.h"
using std::endl;
std::ostream &GoFFlatCodeGen::TO_STATE_ACTION( RedStateAp *state )
{
int act = 0;
if ( state->toStateAction != 0 )
act = state->toStateAction->actListId+1;
out << act;
return out;
}
std::ostream &GoFFlatCodeGen::FROM_STATE_ACTION( RedStateAp *state )
{
int act = 0;
if ( state->fromStateAction != 0 )
act = state->fromStateAction->actListId+1;
out << act;
return out;
}
std::ostream &GoFFlatCodeGen::EOF_ACTION( RedStateAp *state )
{
int act = 0;
if ( state->eofAction != 0 )
act = state->eofAction->actListId+1;
out << act;
return out;
}
/* Write out the function for a transition. */
std::ostream &GoFFlatCodeGen::TRANS_ACTION( RedTransAp *trans )
{
int action = 0;
if ( trans->action != 0 )
action = trans->action->actListId+1;
out << action;
return out;
}
/* Write out the function switch. This switch is keyed on the values
* of the func index. */
std::ostream &GoFFlatCodeGen::TO_STATE_ACTION_SWITCH( int level )
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numToStateRefs > 0 ) {
/* Write the entry label. */
out << TABS(level) << "case " << redAct->actListId+1 << ":" << endl;
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, false, false );
}
}
genLineDirective( out );
return out;
}
/* Write out the function switch. This switch is keyed on the values
* of the func index. */
std::ostream &GoFFlatCodeGen::FROM_STATE_ACTION_SWITCH( int level )
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numFromStateRefs > 0 ) {
/* Write the entry label. */
out << TABS(level) << "case " << redAct->actListId+1 << ":" << endl;
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, false, false );
}
}
genLineDirective( out );
return out;
}
std::ostream &GoFFlatCodeGen::EOF_ACTION_SWITCH( int level )
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numEofRefs > 0 ) {
/* Write the entry label. */
out << TABS(level) << "case " << redAct->actListId+1 << ":" << endl;
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, true, false );
}
}
genLineDirective( out );
return out;
}
/* Write out the function switch. This switch is keyed on the values
* of the func index. */
std::ostream &GoFFlatCodeGen::ACTION_SWITCH( int level )
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numTransRefs > 0 ) {
/* Write the entry label. */
out << TABS(level) << "case " << redAct->actListId+1 << ":" << endl;
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, false, false );
}
}
genLineDirective( out );
return out;
}
void GoFFlatCodeGen::writeData()
{
if ( redFsm->anyConditions() ) {
OPEN_ARRAY( WIDE_ALPH_TYPE(), CK() );
COND_KEYS();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxCondSpan), CSP() );
COND_KEY_SPANS();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxCond), C() );
CONDS();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxCondIndexOffset), CO() );
COND_INDEX_OFFSET();
CLOSE_ARRAY() <<
endl;
}
OPEN_ARRAY( WIDE_ALPH_TYPE(), K() );
KEYS();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxSpan), SP() );
KEY_SPANS();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxFlatIndexOffset), IO() );
FLAT_INDEX_OFFSET();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxIndex), I() );
INDICIES();
CLOSE_ARRAY() <<
endl;
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxState), TT() );
TRANS_TARGS();
CLOSE_ARRAY() <<
endl;
if ( redFsm->anyActions() ) {
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActListId), TA() );
TRANS_ACTIONS();
CLOSE_ARRAY() <<
endl;
}
if ( redFsm->anyToStateActions() ) {
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActionLoc), TSA() );
TO_STATE_ACTIONS();
CLOSE_ARRAY() <<
endl;
}
if ( redFsm->anyFromStateActions() ) {
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActionLoc), FSA() );
FROM_STATE_ACTIONS();
CLOSE_ARRAY() <<
endl;
}
if ( redFsm->anyEofActions() ) {
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActListId), EA() );
EOF_ACTIONS();
CLOSE_ARRAY() <<
endl;
}
if ( redFsm->anyEofTrans() ) {
OPEN_ARRAY( ARRAY_TYPE(redFsm->maxIndexOffset+1), ET() );
EOF_TRANS();
CLOSE_ARRAY() <<
endl;
}
STATE_IDS();
}
void GoFFlatCodeGen::writeExec()
{
testEofUsed = false;
outLabelUsed = false;
out <<
" {" << endl <<
" var _slen " << INT() << endl;
if ( redFsm->anyRegCurStateRef() )
out << " var _ps " << INT() << endl;
out << " var _trans " << INT() << endl;
if ( redFsm->anyConditions() )
out << " var _cond " << INT() << endl;
out <<
" var _keys " << INT() << endl <<
" var _inds " << INT() << endl;
if ( redFsm->anyConditions() ) {
out <<
" var _conds " << INT() << endl <<
" var _widec " << WIDE_ALPH_TYPE() << endl;
}
if ( !noEnd ) {
testEofUsed = true;
out <<
" if " << P() << " == " << PE() << " {" << endl <<
" goto _test_eof" << endl <<
" }" << endl;
}
if ( redFsm->errState != 0 ) {
outLabelUsed = true;
out <<
" if " << vCS() << " == " << redFsm->errState->id << " {" << endl <<
" goto _out" << endl <<
" }" << endl;
}
out << "_resume:" << endl;
if ( redFsm->anyFromStateActions() ) {
out <<
" switch " << FSA() << "[" << vCS() << "] {" << endl;
FROM_STATE_ACTION_SWITCH(1);
out <<
" }" << endl <<
endl;
}
if ( redFsm->anyConditions() )
COND_TRANSLATE();
LOCATE_TRANS();
if ( redFsm->anyEofTrans() )
out << "_eof_trans:" << endl;
if ( redFsm->anyRegCurStateRef() )
out << " _ps = " << vCS() << endl;
out <<
" " << vCS() << " = " << CAST(INT(), TT() + "[_trans]") << endl <<
endl;
if ( redFsm->anyRegActions() ) {
out <<
" if " << TA() << "[_trans] == 0 {" << endl <<
" goto _again" << endl <<
" }" << endl <<
endl <<
" switch " << TA() << "[_trans] {" << endl;
ACTION_SWITCH(1);
out <<
" }" << endl <<
endl;
}
if ( redFsm->anyRegActions() || redFsm->anyActionGotos() ||
redFsm->anyActionCalls() || redFsm->anyActionRets() )
out << "_again:" << endl;
if ( redFsm->anyToStateActions() ) {
out <<
" switch " << TSA() << "[" << vCS() << "] {" << endl;
TO_STATE_ACTION_SWITCH(1);
out <<
" }" << endl <<
endl;
}
if ( redFsm->errState != 0 ) {
outLabelUsed = true;
out <<
" if " << vCS() << " == " << redFsm->errState->id << " {" << endl <<
" goto _out" << endl <<
" }" << endl;
}
if ( !noEnd ) {
out <<
" if " << P() << "++; " << P() << " != " << PE() << " {"
" goto _resume" << endl <<
" }" << endl;
}
else {
out <<
" " << P() << "++" << endl <<
" goto _resume" << endl;
}
if ( testEofUsed )
out << " _test_eof: {}" << endl;
if ( redFsm->anyEofTrans() || redFsm->anyEofActions() ) {
out <<
" if " << P() << " == " << vEOF() << " {" << endl;
if ( redFsm->anyEofTrans() ) {
out <<
" if " << ET() << "[" << vCS() << "] > 0 {" << endl <<
" _trans = " << CAST(INT(), ET() + "[" + vCS() + "] - 1") << endl <<
" goto _eof_trans" << endl <<
" }" << endl;
}
if ( redFsm->anyEofActions() ) {
out <<
" switch " << EA() << "[" << vCS() << "] {" << endl;
EOF_ACTION_SWITCH(2);
out <<
" }" << endl;
}
out <<
" }" << endl <<
endl;
}
if ( outLabelUsed )
out << " _out: {}" << endl;
out << " }" << endl;
}