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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.
*
*/
#ifndef MOHAWK_LIVINGBOOKS_CODE_H
#define MOHAWK_LIVINGBOOKS_CODE_H
#include "common/rect.h"
#include "common/stack.h"
#include "common/substream.h"
namespace Mohawk {
class MohawkEngine_LivingBooks;
class LBItem;
enum LBValueType {
kLBValueString,
kLBValueInteger,
kLBValueReal,
kLBValuePoint,
kLBValueRect,
kLBValueItemPtr
};
struct LBValue {
LBValue() {
type = kLBValueInteger;
integer = 0;
}
LBValue(int val) {
type = kLBValueInteger;
integer = val;
}
LBValue(const Common::String &str) {
type = kLBValueString;
string = str;
}
LBValue(const Common::Point &p) {
type = kLBValuePoint;
point = p;
}
LBValue(const Common::Rect &r) {
type = kLBValueRect;
rect = r;
}
LBValue(LBItem *itm) {
type = kLBValueItemPtr;
item = itm;
}
LBValue(const LBValue &val) {
type = val.type;
switch (type) {
case kLBValueString:
string = val.string;
break;
case kLBValueInteger:
integer = val.integer;
break;
case kLBValueReal:
real = val.real;
break;
case kLBValuePoint:
point = val.point;
break;
case kLBValueRect:
rect = val.rect;
break;
case kLBValueItemPtr:
item = val.item;
break;
}
}
LBValueType type;
Common::String string;
int integer;
double real;
Common::Point point;
Common::Rect rect;
LBItem *item;
bool operator==(const LBValue &x) const;
bool operator!=(const LBValue &x) const;
bool isNumeric() const;
bool isZero() const;
Common::String toString() const;
int toInt() const;
double toDouble() const;
Common::Point toPoint() const;
Common::Rect toRect() const;
};
enum {
kLBCodeLiteralInteger = 0x1
};
enum {
kTokenIdentifier = 0x1,
kTokenLiteral = 0x5,
kTokenString = 0x6,
kTokenEndOfStatement = 0x7,
kTokenEndOfFile = 0x8,
kTokenConcat = 0xb,
kTokenSingleQuote = 0xc, // ??
kTokenDoubleQuote = 0xd, // ??
kTokenMultiply = 0xe,
kTokenOpenBracket = 0xf,
kTokenCloseBracket = 0x10,
kTokenMinus = 0x11,
kTokenMinusMinus = 0x12,
kTokenPlusEquals = 0x13,
kTokenPlus = 0x14,
kTokenPlusPlus = 0x15,
kTokenEquals = 0x16,
kTokenMinusEquals = 0x17,
kTokenMultiplyEquals = 0x18,
kTokenDivideEquals = 0x19,
kTokenListStart = 0x1a,
kTokenListEnd = 0x1b,
kTokenColon = 0x1c, // ??
kTokenLessThan = 0x1d,
kTokenGreaterThan = 0x1e,
kTokenAndEquals = 0x1f,
kTokenDotOperator = 0x20,
kTokenDivide = 0x21,
kTokenAssign = 0x22,
kTokenLessThanEq = 0x23,
kTokenGreaterThanEq = 0x24,
kTokenNotEq = 0x25,
kTokenQuote = 0x27, // ??
kTokenAnd = 0x2a,
kTokenComma = 0x2c,
kTokenConstMode = 0x31,
kTokenIntDivide = 0x32,
kTokenModulo = 0x34,
kTokenNot = 0x35,
kTokenOr = 0x37,
kTokenTrue = 0x39,
kTokenFalse = 0x3a,
kTokenConstDataType = 0x3b, // ??
kTokenConstItemType = 0x3c, // ??
kTokenConstEventId = 0x42,
kTokenConstScriptOpcode = 0x43, // ??
kTokenConstScriptParam = 0x44, // ??
kTokenGeneralCommand = 0x4d,
kTokenItemCommand = 0x4e,
kTokenNotifyCommand = 0x4f,
// 0x5e?!
kTokenKeycode = 0x5f,
// v5 only:
kTokenLocal = 0x61,
kTokenPropListCommand = 0x70,
kTokenRectCommand = 0x71
};
class LBCode {
public:
LBCode(MohawkEngine_LivingBooks *vm, uint16 baseId);
~LBCode();
LBValue runCode(LBItem *src, uint32 offset);
uint parseCode(const Common::String &source);
protected:
MohawkEngine_LivingBooks *_vm;
uint32 _size;
byte *_data;
Common::HashMap<uint16, Common::String> _strings;
uint32 _currOffset;
LBItem *_currSource;
Common::Stack<LBValue> _stack;
byte _currToken;
LBValue _currValue;
void nextToken();
LBValue runCode(byte terminator);
void parseStatement();
void parseComparisons();
void parseConcat();
void parseArithmetic1();
void parseArithmetic2();
void parseMain();
LBItem *resolveItem(const LBValue &value);
Common::Array<LBValue> readParams();
Common::Rect getRectFromParams(const Common::Array<LBValue> ¶ms);
void runGeneralCommand();
void runItemCommand();
void runNotifyCommand();
uint nextFreeString();
bool parseCodeSymbol(const Common::String &name, uint &pos, Common::Array<byte> &code);
public:
void cmdUnimplemented(const Common::Array<LBValue> ¶ms);
void cmdEval(const Common::Array<LBValue> ¶ms);
void cmdRandom(const Common::Array<LBValue> ¶ms);
void cmdStringLen(const Common::Array<LBValue> ¶ms);
void cmdSubstring(const Common::Array<LBValue> ¶ms);
void cmdGetRect(const Common::Array<LBValue> ¶ms);
void cmdTopLeft(const Common::Array<LBValue> ¶ms);
void cmdBottomRight(const Common::Array<LBValue> ¶ms);
void cmdTop(const Common::Array<LBValue> ¶ms);
void cmdLeft(const Common::Array<LBValue> ¶ms);
void cmdBottom(const Common::Array<LBValue> ¶ms);
void cmdRight(const Common::Array<LBValue> ¶ms);
void cmdSetDragParams(const Common::Array<LBValue> ¶ms);
void cmdSetPlayParams(const Common::Array<LBValue> ¶ms);
void cmdSetKeyEvent(const Common::Array<LBValue> ¶ms);
void cmdSetHitTest(const Common::Array<LBValue> ¶ms);
void cmdKey(const Common::Array<LBValue> ¶ms);
void itemIsPlaying(const Common::Array<LBValue> ¶ms);
void itemMoveTo(const Common::Array<LBValue> ¶ms);
void itemSeek(const Common::Array<LBValue> ¶ms);
void itemSetParent(const Common::Array<LBValue> ¶ms);
};
} // End of namespace Mohawk
#endif
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