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// Unicode support by Jim Park -- 08/22/2007
#pragma once
#include <math.h>
#include <float.h>
#include <nsis/nsis_tchar.h>
#define DEFAULT_ARRAY_SIZE 1024
#define ITEMTYPE 0xFF0000
// items classes
#define IT_CONST 0x000000
#define IT_EXPRESSION 0x010000
#define IT_OPERATOR 0x020000
#define IT_VARIABLE 0x030000
#define IT_LOGIC 0x040000 // flow control items
#define IT_FUNCTION 0x050000
#define IT_ARRAY 0x060000 // array operation
#define ITEMSUBTYPE 0x00FF00
// const items
#define ITC_STRING 0x000100
#define ITC_FLOAT 0x000200
#define ITC_INT 0x000400
#define ITC_ARRAY 0x000800
#define ITC_UNKNOWN 0x001000
// type function
#define FTT_FLOATF (ITC_UNKNOWN << 0)
#define FTT_LEN (ITC_UNKNOWN << 1)
#define FTT_CHAR (ITC_UNKNOWN << 2)
// additional option - for "ca" function
#define ITFA_COPY 0x000001
// ops items
#define ITO_MINUS 0x000100
#define ITO_PLUS 0x000200
#define ITO_SHL 0x000300
#define ITO_SHR 0x000400
#define ITO_MUL 0x000500
#define ITO_DIV 0x000600
#define ITO_SET 0x000700
#define ITO_LAND 0x000800
#define ITO_LOR 0x000900
#define ITO_INC 0x000A00
#define ITO_DEC 0x000B00
#define ITO_LE 0x000C00
#define ITO_GE 0x000D00
#define ITO_NE 0x000E00
#define ITO_EQ 0x000F00
#define ITO_LS 0x001000
#define ITO_GR 0x001100
#define ITO_AND 0x001200
#define ITO_MOD 0x001300
#define ITO_OR 0x001400
#define ITO_XOR 0x001500
#define ITO_NOT 0x001600
#define ITO_LNOT 0x001700
// variables sub-types
#define ITV_NSIS 0x000100
#define ITV_USER 0x000200
#define ITV_ARRITEM 0x000400
#define ITV_STACK 0x000800 // plugin specific stack
#define ITV_NSTACK 0x001000 // nsis stack
// logic sub-types
#define ITL_IF 0x000100
#define ITL_WHILE 0x000200
// function sub-types
#define ITF_MATH1 0x000100
#define ITF_MATH2 0x000200
#define ITF_TYPE 0x000300
#define ITF_USER 0x000400
// array items sub-types
#define ITA_ACCESS 0x000000
#define ITEMOPTIONS 0x0000FF
// 16 bytes structure
typedef struct __ExpressionItem ExpressionItem;
//#define EIPARAM int
#define EIPARAM ExpressionItem*
typedef struct __ExpressionItem
{
int type;
EIPARAM param1;
EIPARAM param2;
ExpressionItem *next;
} ExpressionItem;
typedef struct __ParseInfo
{
int SetupNewRoot;
ExpressionItem *item;
ExpressionItem *OpsStack;
ExpressionItem **place;
ExpressionItem **root;
TCHAR valbuf[108];
} ParseInfo;
#define OPERATOR_SET_PRECEDENCE 14
typedef struct __OpStruct
{
TCHAR name[3];
unsigned char precedence;
unsigned short int type;
} OpStruct;
#define MAX_USER_VARS 256
typedef struct __UserVar
{
TCHAR name[28];
ExpressionItem *item;
} UserVar;
#define MAX_USER_FUNCS 256
typedef struct __UserFunc
{
TCHAR name[20];
unsigned char vars[31]; // only used for indexing
unsigned char varsnum; // number of vars < 256
unsigned int varflags;
ExpressionItem *root;
} UserFunc;
typedef struct __ArrayDesc
{
ExpressionItem **array;
int size; // size of allocated items pool
int count; // max number of item accessed
int references; // array will be killed at CleanupItems only when references == 0
} ArrayDesc;
typedef double (*Math1FuncPtr)(double arg);
typedef double (*Math2FuncPtr)(double arg, double arg2);
typedef double (*Math2iFuncPtr)(double arg, int *arg2);
typedef double (*Math2dFuncPtr)(double arg, double *arg2);
typedef struct __MathFunction
{
TCHAR name[3];
unsigned char type;
Math1FuncPtr fptr;
} MathFunction;
#define STI_STRING 0x0100
#define STI_FLOAT 0x0200
#define STI_INT 0x0400
#define FF_DEFAULT 0x00 // uses default mode: if available noexp, else exp
#define FF_NOEXP 0x10 // uses noexp mode
#define FF_EXP 0x20 // uses exp mode (small e)
#define FF_LEXP 0x40 // uses exp mode (large E)
// RunTree options
#define RTO_NEEDCONST 0x0001
#define RTO_PREFFEREDTYPE 0xFF00
void RunTree(ExpressionItem *from, ExpressionItem* &result, int type);
void StringToItem(TCHAR *&sbuf, ExpressionItem *item, int options);
void ItemToString(TCHAR *sbuf, ExpressionItem *item);
void FloatFormat(TCHAR *sbuf, double value, int options);
void itoa64(__int64 i, TCHAR *buffer);
int lstrcmpn(TCHAR *s1, const TCHAR *s2, int chars);
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