1 files changed, 158 insertions, 0 deletions
diff --git a/src/redbuild.h b/src/redbuild.h
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+++ b/src/redbuild.h
@@ -0,0 +1,158 @@
+/*
+ *  Copyright 2006-2012 Adrian Thurston <thurston@complang.org>
+ */
+
+/*  This file is part of Colm.
+ *
+ *  Colm 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.
+ * 
+ *  Colm 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 Colm; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+
+#ifndef _FSMREDUCE_H
+#define _FSMREDUCE_H
+
+#include <iostream>
+#include "avltree.h"
+#include "fsmgraph.h"
+#include "parsedata.h"
+
+/* Forwards. */
+struct FsmTrans;
+struct FsmGraph;
+struct Compiler;
+struct FsmCodeGen;
+struct RedFsm;
+struct GenCondSpace;
+struct Condition;
+
+struct RedActionTable
+:
+	public AvlTreeEl<RedActionTable>
+{
+	RedActionTable( const ActionTable &key )
+	:	
+		key(key), 
+		id(0)
+	{ }
+
+	const ActionTable &getKey() 
+		{ return key; }
+
+	ActionTable key;
+	int id;
+};
+
+typedef AvlTree<RedActionTable, ActionTable, CmpActionTable> ActionTableMap;
+
+struct NextRedTrans
+{
+	Key lowKey, highKey;
+	FsmTrans *trans;
+	FsmTrans *next;
+
+	void load() {
+		if ( trans != 0 ) {
+			next = trans->next;
+			lowKey = trans->lowKey;
+			highKey = trans->highKey;
+		}
+	}
+
+	NextRedTrans( FsmTrans *t ) {
+		trans = t;
+		load();
+	}
+
+	void increment() {
+		trans = next;
+		load();
+	}
+};
+
+class RedFsmBuild
+{
+public:
+	RedFsmBuild( Compiler *pd, FsmGraph *fsm );
+	RedFsm *reduceMachine( );
+
+private:
+	void appendTrans( TransListVect &outList, Key lowKey, Key highKey, FsmTrans *trans );
+	void makeStateActions( FsmState *state );
+	void makeStateList();
+	void makeStateConditions( FsmState *state );
+
+	void initActionList( unsigned long length );
+	void newAction( int anum, char *name, int line, int col, Action *action );
+	void initActionTableList( unsigned long length );
+	void initCondSpaceList( ulong length );
+	void condSpaceItem( int cnum, long condActionId );
+	void newCondSpace( int cnum, int condSpaceId, Key baseKey );
+	void initStateCondList( int snum, ulong length );
+	void addStateCond( int snum, Key lowKey, Key highKey, long condNum );
+	void initStateList( unsigned long length );
+	void addRegionToEntry( int regionId, int entryId );
+	void addEntryPoint( int entryId, unsigned long entryState );
+	void setId( int snum, int id );
+	void initTransList( int snum, unsigned long length );
+	void newTrans( int snum, int tnum, Key lowKey, Key highKey, 
+			long targ, long act );
+	void finishTransList( int snum );
+	void setFinal( int snum );
+	void setEofTrans( int snum, int eofTarget, int actId );
+	void setStateActions( int snum, long toStateAction, 
+			long fromStateAction, long eofAction );
+	void setForcedErrorState();
+	void closeMachine();
+	Key findMaxKey();
+
+	void makeEntryPoints();
+	void makeGetKeyExpr();
+	void makeAccessExpr();
+	void makeCurStateExpr();
+	void makeConditions();
+	void makeInlineList( InlineList *inlineList, InlineItem *context );
+	void makeActionList();
+	void makeActionTableList();
+	void reduceTrans( FsmTrans *trans );
+	void reduceActionTables();
+	void makeTransList( FsmState *state );
+	void makeTrans( Key lowKey, Key highKey, FsmTrans *defTrans );
+	void makeAction( Action *action );
+	void makeLmSwitch( InlineItem *item );
+	void makeMachine();
+	void makeActionExec( InlineItem *item );
+	void makeActionExecTE( InlineItem *item );
+
+	Compiler *pd;
+	FsmGraph *fsm;
+	ActionTableMap actionTableMap;
+	int nextActionTableId;
+
+	int startState;
+	int errState;
+
+public:
+	RedFsm *redFsm;
+
+private:
+	int curAction;
+	int curActionTable;
+	int curTrans;
+	int curState;
+	int curCondSpace;
+	int curStateCond;
+};
+
+
+#endif /* _FSMREDUCE_H */