ragel-6.9ragel-6.9

1 files changed, 83 insertions, 0 deletions

diff --git a/ragel/gogoto.h b/ragel/gogoto.h
new file mode 100644
index 0000000..18d058e
--- /dev/null
+++ b/ragel/gogoto.h
@@ -0,0 +1,83 @@
+/*
+ *  Copyright 2001-2006 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
+ */
+
+#ifndef _GOGOTO_H
+#define _GOGOTO_H
+
+#include <iostream>
+#include "gotablish.h"
+
+/* Forwards. */
+struct CodeGenData;
+struct NameInst;
+struct RedTransAp;
+struct RedStateAp;
+struct GenStateCond;
+
+/*
+ * Goto driven fsm.
+ */
+class GoGotoCodeGen
+	: public GoTablishCodeGen
+{
+public:
+	GoGotoCodeGen( ostream &out )
+		: GoTablishCodeGen(out) {}
+
+protected:
+	std::ostream &TO_STATE_ACTION_SWITCH( int level );
+	std::ostream &FROM_STATE_ACTION_SWITCH( int level );
+	std::ostream &EOF_ACTION_SWITCH( int level );
+	std::ostream &ACTION_SWITCH( int level );
+	std::ostream &STATE_GOTOS( int level );
+	std::ostream &TRANSITIONS();
+	std::ostream &EXEC_FUNCS();
+	std::ostream &FINISH_CASES();
+
+	virtual unsigned int TO_STATE_ACTION( RedStateAp *state );
+	virtual unsigned int FROM_STATE_ACTION( RedStateAp *state );
+	virtual unsigned int EOF_ACTION( RedStateAp *state );
+
+	std::ostream &TO_STATE_ACTIONS();
+	std::ostream &FROM_STATE_ACTIONS();
+	std::ostream &EOF_ACTIONS();
+
+	void COND_TRANSLATE( GenStateCond *stateCond, int level );
+	void emitCondBSearch( RedStateAp *state, int level, int low, int high );
+	void STATE_CONDS( RedStateAp *state, bool genDefault );
+
+	virtual std::ostream &TRANS_GOTO( RedTransAp *trans, int level );
+	virtual int TRANS_NR( RedTransAp *trans );
+
+	void emitSingleSwitch( RedStateAp *state, int level );
+	void emitRangeBSearch( RedStateAp *state, int level, int low, int high );
+
+	/* Called from STATE_GOTOS just before writing the gotos */
+	virtual void GOTO_HEADER( RedStateAp *state, int level );
+	virtual void STATE_GOTO_ERROR( int level );
+
+	virtual void writeData();
+	virtual void writeExec();
+};
+
+#endif