std::ostream &GraphvizDotGen::TRANS_ACTION( RedStateAp *fromState, RedTransAp *trans )
{
int n = 0;
RedAction *actions[3];
if ( fromState->fromStateAction != 0 )
actions[n++] = fromState->fromStateAction;
if ( trans->action != 0 )
actions[n++] = trans->action;
if ( trans->targ != 0 && trans->targ->toStateAction != 0 )
actions[n++] = trans->targ->toStateAction;
if ( n > 0 )
out << " / ";
/* Loop the existing actions and write out what's there. */
for ( int a = 0; a < n; a++ ) {
for ( GenActionTable::Iter actIt = actions[a]->key.first(); actIt.lte(); actIt++ ) {
GenAction *action = actIt->value;
out << action->nameOrLoc();
if ( a < n-1 || !actIt.last() )
out << ", ";
}
}
return out;
}
/* Gather various info on the machine. */
void CodeGenData::analyzeMachine()
{
/* Find the true count of action references. */
findFinalActionRefs();
/* Check if there are any calls in action code. */
for ( GenActionList::Iter act = actionList; act.lte(); act++ ) {
/* Record the occurrence of various kinds of actions. */
if ( act->numToStateRefs > 0 )
redFsm->bAnyToStateActions = true;
if ( act->numFromStateRefs > 0 )
redFsm->bAnyFromStateActions = true;
if ( act->numEofRefs > 0 )
redFsm->bAnyEofActions = true;
if ( act->numTransRefs > 0 )
redFsm->bAnyRegActions = true;
/* Recurse through the action's parse tree looking for various things. */
analyzeAction( act, act->inlineList );
}
/* Analyze reduced action lists. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
for ( GenActionTable::Iter act = redAct->key; act.lte(); act++ )
analyzeActionList( redAct, act->value->inlineList );
}
/* Find states that have transitions with actions that have next
* statements. */
for ( RedStateList::Iter st = redFsm->stateList; st.lte(); st++ ) {
/* Check any actions out of outSinge. */
for ( RedTransList::Iter rtel = st->outSingle; rtel.lte(); rtel++ ) {
if ( rtel->value->action != 0 && rtel->value->action->anyCurStateRef() )
st->bAnyRegCurStateRef = true;
}
/* Check any actions out of outRange. */
for ( RedTransList::Iter rtel = st->outRange; rtel.lte(); rtel++ ) {
if ( rtel->value->action != 0 && rtel->value->action->anyCurStateRef() )
st->bAnyRegCurStateRef = true;
}
/* Check any action out of default. */
if ( st->defTrans != 0 && st->defTrans->action != 0 &&
st->defTrans->action->anyCurStateRef() )
st->bAnyRegCurStateRef = true;
if ( st->stateCondList.length() > 0 )
redFsm->bAnyConditions = true;
if ( st->eofTrans != 0 )
redFsm->bAnyEofTrans = true;
}
/* Assign ids to actions that are referenced. */
assignActionIds();
/* Set the maximums of various values used for deciding types. */
setValueLimits();
}
/* Write out the array of actions. */
std::ostream &JavaTabCodeGen::ACTIONS_ARRAY()
{
ARRAY_ITEM( INT(0), false );
for ( GenActionTableMap::Iter act = redFsm->actionMap; act.lte(); act++ ) {
/* Write out the length, which will never be the last character. */
ARRAY_ITEM( INT(act->key.length()), false );
for ( GenActionTable::Iter item = act->key; item.lte(); item++ )
ARRAY_ITEM( INT(item->value->actionId), (act.last() && item.last()) );
}
return out;
}
std::ostream &GraphvizDotGen::ACTION( RedAction *action )
{
/* The action. */
out << " / ";
for ( GenActionTable::Iter actIt = action->key.first(); actIt.lte(); actIt++ ) {
GenAction *action = actIt->value;
if ( action->name != 0 )
out << action->name;
else
out << action->loc.line << ":" << action->loc.col;
if ( !actIt.last() )
out << ", ";
}
return out;
}
/* Called from before writing the gotos for each state. */
void SplitCodeGen::GOTO_HEADER( RedStateAp *state, bool stateInPartition )
{
bool anyWritten = IN_TRANS_ACTIONS( state );
if ( state->labelNeeded )
out << L"st" << state->id << L":\n";
if ( state->toStateAction != 0 ) {
/* Remember that we wrote an action. Write every action in the list. */
anyWritten = true;
for ( GenActionTable::Iter item = state->toStateAction->key; item.lte(); item++ ) {
ACTION( out, item->value, state->id, false,
state->toStateAction->anyNextStmt() );
}
}
/* Advance and test buffer pos. */
if ( state->labelNeeded ) {
if ( !noEnd ) {
out <<
L" if ( ++" << P() << L" == " << PE() << L" )\n"
L" goto _out" << state->id << L";\n";
}
else {
out <<
L" " << P() << L" += 1;\n";
}
}
/* Give the state a switch case. */
out << L"case " << state->id << L":\n";
if ( state->fromStateAction != 0 ) {
/* Remember that we wrote an action. Write every action in the list. */
anyWritten = true;
for ( GenActionTable::Iter item = state->fromStateAction->key; item.lte(); item++ ) {
ACTION( out, item->value, state->id, false,
state->fromStateAction->anyNextStmt() );
}
}
if ( anyWritten )
genLineDirective( out );
/* Record the prev state if necessary. */
if ( state->anyRegCurStateRef() )
out << L" _ps = " << state->id << L";\n";
}
/* Write out the array of actions. */
std::ostream &JSCodeGen::ACTIONS_ARRAY()
{
START_ARRAY_LINE();
int totalActions = 0;
ARRAY_ITEM( INT(0), ++totalActions, false );
for ( GenActionTableMap::Iter act = redFsm->actionMap; act.lte(); act++ ) {
/* Write out the length, which will never be the last character. */
ARRAY_ITEM( INT(act->key.length()), ++totalActions, false );
for ( GenActionTable::Iter item = act->key; item.lte(); item++ ) {
ARRAY_ITEM( INT(item->value->actionId), ++totalActions, (act.last() && item.last()) );
}
}
END_ARRAY_LINE();
return out;
}
std::wostream &SplitCodeGen::PART_TRANS( int partition )
{
for ( TransApSet::Iter trans = redFsm->transSet; trans.lte(); trans++ ) {
if ( trans->partitionBoundary ) {
out <<
L"ptr" << trans->id << L":\n";
if ( trans->action != 0 ) {
/* If the action contains a next, then we must preload the current
* state since the action may or may not set it. */
if ( trans->action->anyNextStmt() )
out << L" " << vCS() << L" = " << trans->targ->id << L";\n";
/* Write each action in the list. */
for ( GenActionTable::Iter item = trans->action->key; item.lte(); item++ ) {
ACTION( out, item->value, trans->targ->id, false,
trans->action->anyNextStmt() );
}
}
out <<
L" goto pst" << trans->targ->id << L";\n";
trans->targ->partitionBoundary = true;
}
}
for ( RedStateList::Iter st = redFsm->stateList; st.lte(); st++ ) {
if ( st->partitionBoundary ) {
out <<
L" pst" << st->id << L":\n"
L" " << vCS() << L" = " << st->id << L";\n";
if ( st->toStateAction != 0 ) {
/* Remember that we wrote an action. Write every action in the list. */
for ( GenActionTable::Iter item = st->toStateAction->key; item.lte(); item++ ) {
ACTION( out, item->value, st->id, false,
st->toStateAction->anyNextStmt() );
}
genLineDirective( out );
}
ptOutLabelUsed = true;
out << L" goto _pt_out; \n";
}
}
return out;
}
std::ostream &GoFGotoCodeGen::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;
}
std::wostream &FGotoCodeGen::EXEC_ACTIONS()
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numTransRefs > 0 ) {
/* We are at the start of a glob, write the case. */
out << L"f" << redAct->actListId << L":\n";
/* 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 );
out << L"\tgoto _again;\n";
}
}
return out;
}
/* Write out the function switch. This switch is keyed on the values
* of the func index. */
std::ostream &RubyFTabCodeGen::ACTION_SWITCH()
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numTransRefs > 0 ) {
/* Write the entry label. */
out << "\twhen " << redAct->actListId+1 << " then\n";
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, false );
}
}
genLineDirective( out );
return out;
}
/* Write out the function switch. This switch is keyed on the values
* of the func index. */
std::wostream &FGotoCodeGen::FROM_STATE_ACTION_SWITCH()
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numFromStateRefs > 0 ) {
/* Write the entry label. */
out << L"\tcase " << redAct->actListId+1 << L":\n";
/* 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 );
out << L"\tbreak;\n";
}
}
genLineDirective( out );
return out;
}
/* Write out the function switch. This switch is keyed on the values
* of the func index. */
std::wostream &OCamlFFlatCodeGen::TO_STATE_ACTION_SWITCH()
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numToStateRefs > 0 ) {
/* Write the entry label. */
out << L"\t| " << redAct->actListId+1 << L" ->\n";
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, false );
out << L"\t()\n";
}
}
genLineDirective( out );
return out;
}
std::ostream &OCamlFGotoCodeGen::EOF_ACTION_SWITCH()
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numEofRefs > 0 ) {
/* Write the entry label. */
out << "\t| " << redAct->actListId+1 << " ->\n";
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, true );
// out << "\tbreak;\n";
}
}
genLineDirective( out );
return out;
}
std::ostream &OCamlFGotoCodeGen::EXEC_ACTIONS()
{
/* Loop the actions. */
for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
if ( redAct->numTransRefs > 0 ) {
/* We are at the start of a glob, write the case. */
out << "and f" << redAct->actListId << " () =\n";
out << "\tbegin try\n";
/* Write each action in the list of action items. */
for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
ACTION( out, item->value, 0, false );
out << "\twith Goto_again -> () end;\n";
out << "\tdo_again ()\n";
}
}
return out;
}
/* Write out the array of actions. */
std::ostream &GoCodeGen::ACTIONS_ARRAY()
{
out << " 0, ";
int totalActions = 1;
for ( GenActionTableMap::Iter act = redFsm->actionMap; act.lte(); act++ ) {
/* Write out the length, which will never be the last character. */
out << act->key.length() << ", ";
if ( totalActions++ % IALL == 0 )
out << endl << " ";
for ( GenActionTable::Iter item = act->key; item.lte(); item++ ) {
out << item->value->actionId << ", ";
if ( ! (act.last() && item.last()) ) {
if ( totalActions++ % IALL == 0 )
out << endl << " ";
}
}
}
out << endl;
return out;
}
void SplitCodeGen::setLabelsNeeded( RedStateAp *fromState, RedTransAp *trans )
{
/* In the split code gen we don't need labels for transitions across
* partitions. */
if ( fromState->partition == trans->targ->partition ) {
/* If there is no action with a next statement, then the label will be
* needed. */
trans->labelNeeded = true;
if ( trans->action == 0 || !trans->action->anyNextStmt() )
trans->targ->labelNeeded = true;
}
/* Need labels for states that have goto or calls in action code
* invoked on characters (ie, not from out action code). */
if ( trans->action != 0 ) {
/* Loop the actions. */
for ( GenActionTable::Iter act = trans->action->key; act.lte(); act++ ) {
/* Get the action and walk it's tree. */
setLabelsNeeded( fromState, act->value->inlineList );
}
}
}
/* Write out the array of actions. */
std::ostream &FsmCodeGen::ACTIONS_ARRAY()
{
out << "\t0, ";
int totalActions = 1;
for ( GenActionTableMap::Iter act = redFsm->actionMap; act.lte(); act++ ) {
/* Write out the length, which will never be the last character. */
out << act->key.length() << ", ";
/* Put in a line break every 8 */
if ( totalActions++ % 8 == 7 )
out << "\n\t";
for ( GenActionTable::Iter item = act->key; item.lte(); item++ ) {
out << item->value->actionId;
if ( ! (act.last() && item.last()) )
out << ", ";
/* Put in a line break every 8 */
if ( totalActions++ % 8 == 7 )
out << "\n\t";
}
}
out << "\n";
return out;
}
void CodeGenData::setValueLimits()
{
redFsm->maxSingleLen = 0;
redFsm->maxRangeLen = 0;
redFsm->maxKeyOffset = 0;
redFsm->maxIndexOffset = 0;
redFsm->maxActListId = 0;
redFsm->maxActionLoc = 0;
redFsm->maxActArrItem = 0;
redFsm->maxSpan = 0;
redFsm->maxCondSpan = 0;
redFsm->maxFlatIndexOffset = 0;
redFsm->maxCondOffset = 0;
redFsm->maxCondLen = 0;
redFsm->maxCondSpaceId = 0;
redFsm->maxCondIndexOffset = 0;
/* In both of these cases the 0 index is reserved for no value, so the max
* is one more than it would be if they started at 0. */
redFsm->maxIndex = redFsm->transSet.length();
redFsm->maxCond = condSpaceList.length();
/* The nextStateId - 1 is the last state id assigned. */
redFsm->maxState = redFsm->nextStateId - 1;
for ( CondSpaceList::Iter csi = condSpaceList; csi.lte(); csi++ ) {
if ( csi->condSpaceId > redFsm->maxCondSpaceId )
redFsm->maxCondSpaceId = csi->condSpaceId;
}
for ( RedStateList::Iter st = redFsm->stateList; st.lte(); st++ ) {
/* Maximum cond length. */
if ( st->stateCondList.length() > redFsm->maxCondLen )
redFsm->maxCondLen = st->stateCondList.length();
/* Maximum single length. */
if ( st->outSingle.length() > redFsm->maxSingleLen )
redFsm->maxSingleLen = st->outSingle.length();
/* Maximum range length. */
if ( st->outRange.length() > redFsm->maxRangeLen )
redFsm->maxRangeLen = st->outRange.length();
/* The key offset index offset for the state after last is not used, skip it.. */
if ( ! st.last() ) {
redFsm->maxCondOffset += st->stateCondList.length();
redFsm->maxKeyOffset += st->outSingle.length() + st->outRange.length()*2;
redFsm->maxIndexOffset += st->outSingle.length() + st->outRange.length() + 2;
}
/* Max cond span. */
if ( st->condList != 0 ) {
unsigned long long span = keyOps->span( st->condLowKey, st->condHighKey );
if ( span > redFsm->maxCondSpan )
redFsm->maxCondSpan = span;
}
/* Max key span. */
if ( st->transList != 0 ) {
unsigned long long span = keyOps->span( st->lowKey, st->highKey );
if ( span > redFsm->maxSpan )
redFsm->maxSpan = span;
}
/* Max cond index offset. */
if ( ! st.last() ) {
if ( st->condList != 0 )
redFsm->maxCondIndexOffset += keyOps->span( st->condLowKey, st->condHighKey );
}
/* Max flat index offset. */
if ( ! st.last() ) {
if ( st->transList != 0 )
redFsm->maxFlatIndexOffset += keyOps->span( st->lowKey, st->highKey );
redFsm->maxFlatIndexOffset += 1;
}
}
for ( GenActionTableMap::Iter at = redFsm->actionMap; at.lte(); at++ ) {
/* Maximum id of action lists. */
if ( at->actListId+1 > redFsm->maxActListId )
redFsm->maxActListId = at->actListId+1;
/* Maximum location of items in action array. */
if ( at->location+1 > redFsm->maxActionLoc )
redFsm->maxActionLoc = at->location+1;
/* Maximum values going into the action array. */
if ( at->key.length() > redFsm->maxActArrItem )
redFsm->maxActArrItem = at->key.length();
for ( GenActionTable::Iter item = at->key; item.lte(); item++ ) {
if ( item->value->actionId > redFsm->maxActArrItem )
redFsm->maxActArrItem = item->value->actionId;
}
}
}
void CodeGenData::findFinalActionRefs()
{
for ( RedStateList::Iter st = redFsm->stateList; st.lte(); st++ ) {
/* Rerence count out of single transitions. */
for ( RedTransList::Iter rtel = st->outSingle; rtel.lte(); rtel++ ) {
if ( rtel->value->action != 0 ) {
rtel->value->action->numTransRefs += 1;
for ( GenActionTable::Iter item = rtel->value->action->key; item.lte(); item++ )
item->value->numTransRefs += 1;
}
}
/* Reference count out of range transitions. */
for ( RedTransList::Iter rtel = st->outRange; rtel.lte(); rtel++ ) {
if ( rtel->value->action != 0 ) {
rtel->value->action->numTransRefs += 1;
for ( GenActionTable::Iter item = rtel->value->action->key; item.lte(); item++ )
item->value->numTransRefs += 1;
}
}
/* Reference count default transition. */
if ( st->defTrans != 0 && st->defTrans->action != 0 ) {
st->defTrans->action->numTransRefs += 1;
for ( GenActionTable::Iter item = st->defTrans->action->key; item.lte(); item++ )
item->value->numTransRefs += 1;
}
/* Reference count eof transitions. */
if ( st->eofTrans != 0 && st->eofTrans->action != 0 ) {
st->eofTrans->action->numTransRefs += 1;
for ( GenActionTable::Iter item = st->eofTrans->action->key; item.lte(); item++ )
item->value->numTransRefs += 1;
}
/* Reference count to state actions. */
if ( st->toStateAction != 0 ) {
st->toStateAction->numToStateRefs += 1;
for ( GenActionTable::Iter item = st->toStateAction->key; item.lte(); item++ )
item->value->numToStateRefs += 1;
}
/* Reference count from state actions. */
if ( st->fromStateAction != 0 ) {
st->fromStateAction->numFromStateRefs += 1;
for ( GenActionTable::Iter item = st->fromStateAction->key; item.lte(); item++ )
item->value->numFromStateRefs += 1;
}
/* Reference count EOF actions. */
if ( st->eofAction != 0 ) {
st->eofAction->numEofRefs += 1;
for ( GenActionTable::Iter item = st->eofAction->key; item.lte(); item++ )
item->value->numEofRefs += 1;
}
}
}
