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+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2004 Ivan Dubrov
+ * Copyright (C) 2004-2006 The ScummVM project
+ *
+ * This program 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.
+
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+#ifndef GOB_PARSE_H
+#define GOB_PARSE_H
+
+namespace Gob {
+
+class Parse {
+public:
+ void skipExpr(char stopToken);
+ void printExpr(char stopToken);
+ void printVarIndex(void);
+ virtual int16 parseVarIndex(void) = 0;
+ virtual int16 parseValExpr(unsigned stopToken=99) = 0;
+ virtual int16 parseExpr(char stopToken, byte *resultPtr) = 0;
+
+ Parse(GobEngine *vm);
+ virtual ~Parse() {};
+
+protected:
+ enum PointerType {
+ kExecPtr = 0,
+ kInterVar = 1,
+ kResStr = 2
+ };
+
+ GobEngine *_vm;
+
+ int32 encodePtr(char *ptr, int type);
+ char *decodePtr(int32 n);
+};
+
+class Parse_v1 : public Parse {
+public:
+ Parse_v1(GobEngine *vm);
+ virtual ~Parse_v1() {};
+
+ virtual int16 parseVarIndex(void);
+ virtual int16 parseValExpr(unsigned stopToken=99);
+ virtual int16 parseExpr(char stopToken, byte *resultPtr);
+};
+
+class Parse_v2 : public Parse_v1 {
+public:
+ Parse_v2(GobEngine *vm);
+ virtual ~Parse_v2() {};
+
+ virtual int16 parseVarIndex(void);
+ virtual int16 parseValExpr(unsigned stopToken=99);
+ virtual int16 parseExpr(char stopToken, byte *resultPtr);
+};
+
+} // End of namespace Gob
+
+#endif