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-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * 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 {
-
-enum {
- OP_NEG = 1,
- OP_ADD = 2,
- OP_SUB = 3,
- OP_BITOR = 4,
- OP_MUL = 5,
- OP_DIV = 6,
- OP_MOD = 7,
- OP_BITAND = 8,
- OP_BEGIN_EXPR = 9,
- OP_END_EXPR = 10,
- OP_NOT = 11,
-
- OP_END_MARKER = 12, // Marks end of an array or string
-
-
- OP_ARRAY_UINT8 = 16,
-
- OP_LOAD_VAR_INT16 = 17,
- OP_LOAD_VAR_INT8 = 18,
- OP_LOAD_IMM_INT32 = 19,
- OP_LOAD_IMM_INT16 = 20,
- OP_LOAD_IMM_INT8 = 21,
- OP_LOAD_IMM_STR = 22,
-
- OP_LOAD_VAR_UINT32 = 23, // ???
- OP_LOAD_VAR_UINT32_AS_UINT16 = 24, // ???
- OP_LOAD_VAR_STR = 25,
-
- OP_ARRAY_UINT32 = 26,
- OP_ARRAY_UINT16 = 27,
- OP_ARRAY_STR = 28,
-
- OP_FUNC = 29,
-
- OP_OR = 30, // Logical OR
- OP_AND = 31, // Logical AND
- OP_LESS = 32,
- OP_LEQ = 33,
- OP_GREATER = 34,
- OP_GEQ = 35,
- OP_EQ = 36,
- OP_NEQ = 37
-};
-
-enum {
- FUNC_SQRT1 = 0,
- FUNC_SQRT2 = 1,
- FUNC_SQRT3 = 6,
-
- FUNC_SQR = 5,
- FUNC_ABS = 7,
- FUNC_RAND = 10
-};
-
-enum {
- // FIXME: The following two 'truth values' are stored inside the list
- // of "operators". So they somehow coincide with OP_LOAD_VAR_UINT32
- // and OP_LOAD_VAR_UINT32_AS_UINT16. I haven't yet quite understood
- // how, resp. what that means. You have been warned.
- GOB_TRUE = 24,
- GOB_FALSE = 23
-};
-
-class Parse {
-public:
- void skipExpr(char stopToken);
- void printExpr(char stopToken);
- void printVarIndex(void);
-
- int16 parseVarIndex(uint16 *arg_0 = 0, uint16 *arg_4 = 0);
- int16 parseValExpr(byte stopToken = 99);
- int16 parseExpr(byte stopToken, byte *resultPtr);
-
- Parse(GobEngine *vm);
- virtual ~Parse() {}
-
-private:
- enum PointerType {
- kExecPtr = 0,
- kInterVar = 1,
- kResStr = 2
- };
-
- GobEngine *_vm;
-
- int32 encodePtr(byte *ptr, int type);
- byte *decodePtr(int32 n);
-
- void printExpr_internal(char stopToken);
-
- int16 getOffset(int16 arg_0, byte arg_2, uint32 arg_3, uint16 arg_7, uint16 arg_9);
- int cmpHelper(byte *operPtr, int32 *valPtr);
-};
-
-} // End of namespace Gob
-
-#endif // GOB_PARSE_H