mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-25 03:07:06 +00:00
149 lines
3.4 KiB
C++
149 lines
3.4 KiB
C++
/* 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);
|
|
virtual int16 parseVarIndex(uint16 *arg_0 = 0, uint16 *arg_4 = 0) = 0;
|
|
virtual int16 parseValExpr(byte stopToken = 99) = 0;
|
|
virtual int16 parseExpr(byte stopToken, byte *resultPtr) = 0;
|
|
|
|
Parse(GobEngine *vm);
|
|
virtual ~Parse() {}
|
|
|
|
protected:
|
|
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);
|
|
|
|
int cmpHelper(byte *operPtr, int32 *valPtr);
|
|
};
|
|
|
|
class Parse_v1 : public Parse {
|
|
public:
|
|
Parse_v1(GobEngine *vm);
|
|
virtual ~Parse_v1() {}
|
|
|
|
virtual int16 parseVarIndex(uint16 *arg_0 = 0, uint16 *arg_4 = 0);
|
|
virtual int16 parseValExpr(byte stopToken = 99);
|
|
virtual int16 parseExpr(byte stopToken, byte *resultPtr);
|
|
};
|
|
|
|
class Parse_v2 : public Parse_v1 {
|
|
public:
|
|
Parse_v2(GobEngine *vm);
|
|
virtual ~Parse_v2() {}
|
|
|
|
virtual int16 sub_12063(int16 arg_0, byte arg_2, uint32 arg_3, uint16 arg_7, uint16 arg_9);
|
|
|
|
virtual int16 parseVarIndex(uint16 *arg_0 = 0, uint16 *arg_4 = 0);
|
|
virtual int16 parseValExpr(byte stopToken = 99);
|
|
virtual int16 parseExpr(byte stopToken, byte *resultPtr);
|
|
};
|
|
|
|
} // End of namespace Gob
|
|
|
|
#endif // GOB_PARSE_H
|