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75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2004 Ivan Dubrov
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* Copyright (C) 2004-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $Header$
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*
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*/
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#ifndef GOB_PARSE_H
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#define GOB_PARSE_H
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namespace Gob {
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class Parse {
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public:
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void skipExpr(char stopToken);
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void printExpr(char stopToken);
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void printVarIndex(void);
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virtual int16 parseVarIndex(void) = 0;
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virtual int16 parseValExpr(unsigned stopToken=99) = 0;
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virtual int16 parseExpr(char stopToken, byte *resultPtr) = 0;
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Parse(GobEngine *vm);
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virtual ~Parse() {};
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protected:
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enum PointerType {
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kExecPtr = 0,
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kInterVar = 1,
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kResStr = 2
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};
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GobEngine *_vm;
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int32 encodePtr(char *ptr, int type);
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char *decodePtr(int32 n);
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};
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class Parse_v1 : public Parse {
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public:
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Parse_v1(GobEngine *vm);
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virtual ~Parse_v1() {};
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virtual int16 parseVarIndex(void);
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virtual int16 parseValExpr(unsigned stopToken=99);
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virtual int16 parseExpr(char stopToken, byte *resultPtr);
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};
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class Parse_v2 : public Parse_v1 {
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public:
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Parse_v2(GobEngine *vm);
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virtual ~Parse_v2() {};
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virtual int16 parseVarIndex(void);
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virtual int16 parseValExpr(unsigned stopToken=99);
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virtual int16 parseExpr(char stopToken, byte *resultPtr);
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};
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} // End of namespace Gob
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#endif
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