Import from my private repository. Snapshot after version 5.16, immediately

following the rewrite of the parsers. Repository revision number 3961.


git-svn-id: http://svn.complang.org/ragel/trunk@2 052ea7fc-9027-0410-9066-f65837a77df0

1 files changed, 364 insertions, 0 deletions

diff --git a/rlcodegen/fflatcodegen.cpp b/rlcodegen/fflatcodegen.cpp
new file mode 100644
index 0000000..25f4d24
--- /dev/null
+++ b/rlcodegen/fflatcodegen.cpp
@@ -0,0 +1,364 @@
+/*
+ *  Copyright 2004-2006 Adrian Thurston <thurston@cs.queensu.ca>
+ *            2004 Eric 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 "rlcodegen.h"
+#include "fflatcodegen.h"
+#include "redfsm.h"
+#include "gendata.h"
+
+std::ostream &FFlatCodeGen::TO_STATE_ACTION( RedStateAp *state )
+{
+	int act = 0;
+	if ( state->toStateAction != 0 )
+		act = state->toStateAction->actListId+1;
+	out << act;
+	return out;
+}
+
+std::ostream &FFlatCodeGen::FROM_STATE_ACTION( RedStateAp *state )
+{
+	int act = 0;
+	if ( state->fromStateAction != 0 )
+		act = state->fromStateAction->actListId+1;
+	out << act;
+	return out;
+}
+
+std::ostream &FFlatCodeGen::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 &FFlatCodeGen::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 &FFlatCodeGen::TO_STATE_ACTION_SWITCH()
+{
+	/* Loop the actions. */
+	for ( ActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
+		if ( redAct->numToStateRefs > 0 ) {
+			/* Write the entry label. */
+			out << "\tcase " << redAct->actListId+1 << ":\n";
+
+			/* Write each action in the list of action items. */
+			for ( ActionTable::Iter item = redAct->key; item.lte(); item++ )
+				ACTION( out, item->value, 0, false );
+
+			out << "\tbreak;\n";
+		}
+	}
+
+	genLineDirective( out );
+	return out;
+}
+
+/* Write out the function switch. This switch is keyed on the values
+ * of the func index. */
+std::ostream &FFlatCodeGen::FROM_STATE_ACTION_SWITCH()
+{
+	/* Loop the actions. */
+	for ( ActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
+		if ( redAct->numFromStateRefs > 0 ) {
+			/* Write the entry label. */
+			out << "\tcase " << redAct->actListId+1 << ":\n";
+
+			/* Write each action in the list of action items. */
+			for ( ActionTable::Iter item = redAct->key; item.lte(); item++ )
+				ACTION( out, item->value, 0, false );
+
+			out << "\tbreak;\n";
+		}
+	}
+
+	genLineDirective( out );
+	return out;
+}
+
+std::ostream &FFlatCodeGen::EOF_ACTION_SWITCH()
+{
+	/* Loop the actions. */
+	for ( ActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
+		if ( redAct->numEofRefs > 0 ) {
+			/* Write the entry label. */
+			out << "\tcase " << redAct->actListId+1 << ":\n";
+
+			/* Write each action in the list of action items. */
+			for ( ActionTable::Iter item = redAct->key; item.lte(); item++ )
+				ACTION( out, item->value, 0, true );
+
+			out << "\tbreak;\n";
+		}
+	}
+
+	genLineDirective( out );
+	return out;
+}
+
+/* Write out the function switch. This switch is keyed on the values
+ * of the func index. */
+std::ostream &FFlatCodeGen::ACTION_SWITCH()
+{
+	/* Loop the actions. */
+	for ( ActionTableMap::Iter redAct = redFsm->actionMap; redAct.lte(); redAct++ ) {
+		if ( redAct->numTransRefs > 0 ) {
+			/* Write the entry label. */
+			out << "\tcase " << redAct->actListId+1 << ":\n";
+
+			/* Write each action in the list of action items. */
+			for ( ActionTable::Iter item = redAct->key; item.lte(); item++ )
+				ACTION( out, item->value, 0, false );
+
+			out << "\tbreak;\n";
+		}
+	}
+
+	genLineDirective( out );
+	return out;
+}
+
+void FFlatCodeGen::writeOutData()
+{
+	if ( anyConditions() ) {
+		OPEN_ARRAY( WIDE_ALPH_TYPE(), CK() );
+		COND_KEYS();
+		CLOSE_ARRAY() <<
+		"\n";
+
+		OPEN_ARRAY( ARRAY_TYPE(maxCondSpan), CSP() );
+		COND_KEY_SPANS();
+		CLOSE_ARRAY() <<
+		"\n";
+
+		OPEN_ARRAY( ARRAY_TYPE(maxCond), C() );
+		CONDS();
+		CLOSE_ARRAY() <<
+		"\n";
+
+		OPEN_ARRAY( ARRAY_TYPE(maxCondIndexOffset), CO() );
+		COND_INDEX_OFFSET();
+		CLOSE_ARRAY() <<
+		"\n";
+	}
+
+	OPEN_ARRAY( WIDE_ALPH_TYPE(), K() );
+	KEYS();
+	CLOSE_ARRAY() <<
+	"\n";
+
+	OPEN_ARRAY( ARRAY_TYPE(maxSpan), SP() );
+	KEY_SPANS();
+	CLOSE_ARRAY() <<
+	"\n";
+
+	OPEN_ARRAY( ARRAY_TYPE(maxFlatIndexOffset), IO() );
+	FLAT_INDEX_OFFSET();
+	CLOSE_ARRAY() <<
+	"\n";
+
+	OPEN_ARRAY( ARRAY_TYPE(maxIndex), I() );
+	INDICIES();
+	CLOSE_ARRAY() <<
+	"\n";
+
+	OPEN_ARRAY( ARRAY_TYPE(maxState), TT() );
+	TRANS_TARGS();
+	CLOSE_ARRAY() <<
+	"\n";
+
+	if ( anyActions() ) {
+		OPEN_ARRAY( ARRAY_TYPE(maxActListId), TA() );
+		TRANS_ACTIONS();
+		CLOSE_ARRAY() <<
+		"\n";
+	}
+
+	if ( anyToStateActions() ) {
+		OPEN_ARRAY( ARRAY_TYPE(maxActionLoc),  TSA() );
+		TO_STATE_ACTIONS();
+		CLOSE_ARRAY() <<
+		"\n";
+	}
+
+	if ( anyFromStateActions() ) {
+		OPEN_ARRAY( ARRAY_TYPE(maxActionLoc), FSA() );
+		FROM_STATE_ACTIONS();
+		CLOSE_ARRAY() <<
+		"\n";
+	}
+
+	if ( anyEofActions() ) {
+		OPEN_ARRAY( ARRAY_TYPE(maxActListId), EA() );
+		EOF_ACTIONS();
+		CLOSE_ARRAY() <<
+		"\n";
+	}
+
+	out <<
+		"static const int " << START() << " = " << START_STATE_ID() << ";\n"
+		"\n";
+
+	if ( cgd->writeFirstFinal ) {
+		out <<
+			"static const int " << FIRST_FINAL() << " = " << FIRST_FINAL_STATE() << ";\n"
+			"\n";
+	}
+
+	if ( cgd->writeErr ) {
+		out <<
+			"static const int " << ERROR() << " = " << ERROR_STATE() << ";\n"
+			"\n";
+	}
+}
+
+void FFlatCodeGen::writeOutExec()
+{
+	outLabelUsed = false;
+
+	out << 
+		"	{\n"
+		"	int _slen";
+
+	if ( anyRegCurStateRef() )
+		out << ", _ps";
+	
+	out << ";\n";
+	out << "	int _trans";
+
+	if ( anyConditions() )
+		out << ", _cond";
+
+	out << ";\n";
+
+	out <<
+		"	" << PTR_CONST() << WIDE_ALPH_TYPE() << POINTER() << "_keys;\n"
+		"	" << PTR_CONST() << ARRAY_TYPE(maxIndex) << POINTER() << "_inds;\n";
+
+	if ( anyConditions() ) {
+		out << 
+			"	" << PTR_CONST() << ARRAY_TYPE(maxCond) << POINTER() << "_conds;\n"
+			"	" << WIDE_ALPH_TYPE() << " _widec;\n";
+	}
+
+	if ( cgd->hasEnd ) {
+		outLabelUsed = true;
+		out << 
+			"	if ( " << P() << " == " << PE() << " )\n"
+			"		goto _out;\n";
+	}
+
+	out << "_resume:\n";
+
+	if ( redFsm->errState != 0 ) {
+		outLabelUsed = true;
+		out << 
+			"	if ( " << CS() << " == " << redFsm->errState->id << " )\n"
+			"		goto _out;\n";
+	}
+
+	if ( anyFromStateActions() ) {
+		out <<
+			"	switch ( " << FSA() << "[" << CS() << "] ) {\n";
+			FROM_STATE_ACTION_SWITCH();
+			SWITCH_DEFAULT() <<
+			"	}\n"
+			"\n";
+	}
+
+	if ( anyConditions() )
+		COND_TRANSLATE();
+
+	LOCATE_TRANS();
+	
+	if ( anyRegCurStateRef() )
+		out << "	_ps = " << CS() << ";\n";
+
+	out << 
+		"	" << CS() << " = " << TT() << "[_trans];\n\n";
+
+	if ( anyRegActions() ) {
+		out << 
+			"	if ( " << TA() << "[_trans] == 0 )\n"
+			"		goto _again;\n"
+			"\n"
+			"	switch ( " << TA() << "[_trans] ) {\n";
+			ACTION_SWITCH();
+			SWITCH_DEFAULT() <<
+			"	}\n"
+			"\n";
+	}
+
+	if ( anyRegActions() || anyActionGotos() || anyActionCalls() || anyActionRets() )
+		out << "_again:\n";
+
+	if ( anyToStateActions() ) {
+		out <<
+			"	switch ( " << TSA() << "[" << CS() << "] ) {\n";
+			TO_STATE_ACTION_SWITCH();
+			SWITCH_DEFAULT() <<
+			"	}\n"
+			"\n";
+	}
+
+	if ( cgd->hasEnd ) {
+		out << 
+			"	if ( ++" << P() << " != " << PE() << " )\n"
+			"		goto _resume;\n";
+	}
+	else {
+		out << 
+			"	" << P() << " += 1;\n"
+			"	goto _resume;\n";
+	}
+
+	if ( outLabelUsed )
+		out << "	_out: {}\n";
+
+	out << "	}\n";
+}
+
+void FFlatCodeGen::writeOutEOF()
+{
+	if ( anyEofActions() ) {
+		out <<
+			"	{\n"
+			"	switch ( " << EA() << "[" << CS() << "] ) {\n";
+			EOF_ACTION_SWITCH();
+			SWITCH_DEFAULT() <<
+			"	}\n"
+			"	}\n"
+			"\n";
+	}
+}