2 * Copyright 2004-2006 Adrian Thurston <thurston@complang.org>
3 * 2004 Erich Ocean <eric.ocean@ampede.com>
4 * 2005 Alan West <alan@alanz.com>
7 /* This file is part of Ragel.
9 * Ragel is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * Ragel is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Ragel; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 std::ostream &FFlatCodeGen::TO_STATE_ACTION( RedStateAp *state )
32 if ( state->toStateAction != 0 )
33 act = state->toStateAction->actListId+1;
38 std::ostream &FFlatCodeGen::FROM_STATE_ACTION( RedStateAp *state )
41 if ( state->fromStateAction != 0 )
42 act = state->fromStateAction->actListId+1;
47 std::ostream &FFlatCodeGen::EOF_ACTION( RedStateAp *state )
50 if ( state->eofAction != 0 )
51 act = state->eofAction->actListId+1;
56 /* Write out the function for a transition. */
57 std::ostream &FFlatCodeGen::TRANS_ACTION( RedTransAp *trans )
60 if ( trans->action != 0 )
61 action = trans->action->actListId+1;
66 /* Write out the function switch. This switch is keyed on the values
67 * of the func index. */
68 std::ostream &FFlatCodeGen::TO_STATE_ACTION_SWITCH()
70 /* Loop the actions. */
71 for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
72 if ( redAct->numToStateRefs > 0 ) {
73 /* Write the entry label. */
74 out << "\tcase " << redAct->actListId+1 << ":\n";
76 /* Write each action in the list of action items. */
77 for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
78 ACTION( out, item->value, 0, false, false );
84 genLineDirective( out );
88 /* Write out the function switch. This switch is keyed on the values
89 * of the func index. */
90 std::ostream &FFlatCodeGen::FROM_STATE_ACTION_SWITCH()
92 /* Loop the actions. */
93 for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
94 if ( redAct->numFromStateRefs > 0 ) {
95 /* Write the entry label. */
96 out << "\tcase " << redAct->actListId+1 << ":\n";
98 /* Write each action in the list of action items. */
99 for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
100 ACTION( out, item->value, 0, false, false );
106 genLineDirective( out );
110 std::ostream &FFlatCodeGen::EOF_ACTION_SWITCH()
112 /* Loop the actions. */
113 for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
114 if ( redAct->numEofRefs > 0 ) {
115 /* Write the entry label. */
116 out << "\tcase " << redAct->actListId+1 << ":\n";
118 /* Write each action in the list of action items. */
119 for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
120 ACTION( out, item->value, 0, true, false );
126 genLineDirective( out );
130 /* Write out the function switch. This switch is keyed on the values
131 * of the func index. */
132 std::ostream &FFlatCodeGen::ACTION_SWITCH()
134 /* Loop the actions. */
135 for ( GenActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
136 if ( redAct->numTransRefs > 0 ) {
137 /* Write the entry label. */
138 out << "\tcase " << redAct->actListId+1 << ":\n";
140 /* Write each action in the list of action items. */
141 for ( GenActionTable::Iter item = redAct->key; item.lte(); item++ )
142 ACTION( out, item->value, 0, false, false );
148 genLineDirective( out );
152 void FFlatCodeGen::writeData()
154 if ( redFsm->anyConditions() ) {
155 OPEN_ARRAY( WIDE_ALPH_TYPE(), CK() );
160 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxCondSpan), CSP() );
165 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxCond), C() );
170 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxCondIndexOffset), CO() );
176 OPEN_ARRAY( WIDE_ALPH_TYPE(), K() );
181 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxSpan), SP() );
186 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxFlatIndexOffset), IO() );
191 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxIndex), I() );
196 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxState), TT() );
201 if ( redFsm->anyActions() ) {
202 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActListId), TA() );
208 if ( redFsm->anyToStateActions() ) {
209 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActionLoc), TSA() );
215 if ( redFsm->anyFromStateActions() ) {
216 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActionLoc), FSA() );
217 FROM_STATE_ACTIONS();
222 if ( redFsm->anyEofActions() ) {
223 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxActListId), EA() );
229 if ( redFsm->anyEofTrans() ) {
230 OPEN_ARRAY( ARRAY_TYPE(redFsm->maxIndexOffset+1), ET() );
239 void FFlatCodeGen::writeExec()
242 outLabelUsed = false;
248 if ( redFsm->anyRegCurStateRef() )
252 out << " int _trans";
254 if ( redFsm->anyConditions() )
260 " " << PTR_CONST() << WIDE_ALPH_TYPE() << POINTER() << "_keys;\n"
261 " " << PTR_CONST() << ARRAY_TYPE(redFsm->maxIndex) << POINTER() << "_inds;\n";
263 if ( redFsm->anyConditions() ) {
265 " " << PTR_CONST() << ARRAY_TYPE(redFsm->maxCond) << POINTER() << "_conds;\n"
266 " " << WIDE_ALPH_TYPE() << " _widec;\n";
272 " if ( " << P() << " == " << PE() << " )\n"
273 " goto _test_eof;\n";
276 if ( redFsm->errState != 0 ) {
279 " if ( " << vCS() << " == " << redFsm->errState->id << " )\n"
285 if ( redFsm->anyFromStateActions() ) {
287 " switch ( " << FSA() << "[" << vCS() << "] ) {\n";
288 FROM_STATE_ACTION_SWITCH();
294 if ( redFsm->anyConditions() )
299 if ( redFsm->anyEofTrans() )
300 out << "_eof_trans:\n";
302 if ( redFsm->anyRegCurStateRef() )
303 out << " _ps = " << vCS() << ";\n";
306 " " << vCS() << " = " << TT() << "[_trans];\n\n";
308 if ( redFsm->anyRegActions() ) {
310 " if ( " << TA() << "[_trans] == 0 )\n"
313 " switch ( " << TA() << "[_trans] ) {\n";
320 if ( redFsm->anyRegActions() || redFsm->anyActionGotos() ||
321 redFsm->anyActionCalls() || redFsm->anyActionRets() )
324 if ( redFsm->anyToStateActions() ) {
326 " switch ( " << TSA() << "[" << vCS() << "] ) {\n";
327 TO_STATE_ACTION_SWITCH();
333 if ( redFsm->errState != 0 ) {
336 " if ( " << vCS() << " == " << redFsm->errState->id << " )\n"
342 " if ( ++" << P() << " != " << PE() << " )\n"
347 " " << P() << " += 1;\n"
352 out << " _test_eof: {}\n";
354 if ( redFsm->anyEofTrans() || redFsm->anyEofActions() ) {
356 " if ( " << P() << " == " << vEOF() << " )\n"
359 if ( redFsm->anyEofTrans() ) {
361 " if ( " << ET() << "[" << vCS() << "] > 0 ) {\n"
362 " _trans = " << ET() << "[" << vCS() << "] - 1;\n"
363 " goto _eof_trans;\n"
367 if ( redFsm->anyEofActions() ) {
369 " switch ( " << EA() << "[" << vCS() << "] ) {\n";
381 out << " _out: {}\n";