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express.c
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/***************************************************************************
*
* Copyright (c) 1997, 1998 Timpanogas Research Group, Inc. All Rights
* Reserved.
*
* AUTHOR : Jeff V. Merkey
* FILE : EXPRESS.C
* DESCRIP : Expression Parser and Evaluation Routines for MANOS v1.0
* DATE : December 28, 1997
*
*
***************************************************************************/
#include "stdarg.h"
#include "stdio.h"
#include "stdlib.h"
#include "ctype.h"
#include "string.h"
#include "kernel.h"
#include "keyboard.h"
#include "screen.h"
#include "dos.h"
#include "tss.h"
#include "types.h"
extern LONG get_flags(void);
extern void set_flags(LONG);
extern void spin_lock(LONG *);
extern void spin_unlock(LONG *);
#define PROCESSOR_32 32
#define PROCESSOR_64 64
#define DEBUG_EXPRESS 0
#define DEBUG_BOOL 0
#define DEBUG_LOGICAL 0
#define DEBUG_BOOL_STACK 0
#define INVALID_EXPRESSION 0
#define NUMERIC_EXPRESSION 1
#define BOOLEAN_EXPRESSION 2
#define NUM_STACK_SIZE 50
#define CONTEXT_STACK_SIZE 100
#define BOOL_STACK_SIZE 50
#define LOGICAL_STACK_SIZE 50
#define NULL_TOKEN 0
#define NUMBER_TOKEN 1
#define MINUS_TOKEN 2
#define PLUS_TOKEN 3
#define MULTIPLY_TOKEN 4
#define DIVIDE_TOKEN 5
#define GREATER_TOKEN 6
#define LESS_TOKEN 7
#define XOR_TOKEN 8
#define AND_TOKEN 9
#define OR_TOKEN 10
#define NOT_TOKEN 11
#define NEG_TOKEN 12
#define EQUAL_TOKEN 13
#define LEFT_SHIFT_TOKEN 14
#define RIGHT_SHIFT_TOKEN 15
#define SPACE_TOKEN 16
#define FLAGS_TOKEN 17
#define EAX_TOKEN 18
#define EBX_TOKEN 19
#define ECX_TOKEN 20
#define EDX_TOKEN 21
#define ESI_TOKEN 22
#define EDI_TOKEN 23
#define EBP_TOKEN 24
#define ESP_TOKEN 25
#define CS_TOKEN 26
#define DS_TOKEN 27
#define ES_TOKEN 28
#define FS_TOKEN 29
#define GS_TOKEN 30
#define SS_TOKEN 31
#define DREF_OPEN_TOKEN 32
#define DREF_CLOSE_TOKEN 33
#define MOD_TOKEN 34
#define NUMBER_END 35
#define GREATER_EQUAL_TOKEN 36
#define LESS_EQUAL_TOKEN 37
#define EIP_TOKEN 38
#define ASSIGNMENT_TOKEN 39
#define DWORD_TOKEN 40
#define WORD_TOKEN 41
#define BYTE_TOKEN 42
#define LOGICAL_AND_TOKEN 43
#define LOGICAL_OR_TOKEN 44
#define CF_TOKEN 45
#define PF_TOKEN 46
#define AF_TOKEN 47
#define ZF_TOKEN 48
#define SF_TOKEN 49
#define IF_TOKEN 50
#define DF_TOKEN 51
#define OF_TOKEN 52
#define VM_TOKEN 53
#define AC_TOKEN 54
#define BB_TOKEN 55
#define EB_TOKEN 56
#define NOT_EQUAL_TOKEN 57
#define CF_FLAG 0x00000001 // ????
#define PF_FLAG 0x00000004
#define AF_FLAG 0x00000010 // ????
#define ZF_FLAG 0x00000040
#define SF_FLAG 0x00000080
#define TF_FLAG 0x00000100 // ss flag
#define IF_FLAG 0x00000200
#define DF_FLAG 0x00000400 // ????
#define OF_FLAG 0x00000800
#define NT_FLAG 0x00004000
#define RF_FLAG 0x00010000 // resume flag
#define VM_FLAG 0x00020000
#define AC_FLAG 0x00040000 // ????
#define VIF_FLAG 0x00080000
#define VIP_FLAG 0x00100000
#define ID_FLAG 0x00200000
#define LONG_PTR 0
#define WORD_PTR 1
#define BYTE_PTR 2
#define CLASS_DATA 1
#define CLASS_ASSIGN 2
#define CLASS_PARTITION 3
#define CLASS_ARITHMETIC 4
#define CLASS_BOOLEAN 5
BYTE *exprDescription[]={
"INVALID",
"NUMERIC",
"BOOLEAN",
"???????",
};
BYTE *parserDescription[]={
"NULL_TOKEN",
"NUMBER_TOKEN",
"MINUS_TOKEN",
"PLUS_TOKEN",
"MULTIPLY_TOKEN",
"DIVIDE_TOKEN",
"GREATER_TOKEN",
"LESS_TOKEN",
"XOR_TOKEN",
"AND_TOKEN",
"OR_TOKEN",
"NOT_TOKEN",
"NEG_TOKEN",
"EQUAL_TOKEN",
"LEFT_SHIFT_TOKEN",
"RIGHT_SHIFT_TOKEN",
"SPACE_TOKEN",
"FLAGS_TOKEN",
"EAX_TOKEN",
"EBX_TOKEN",
"ECX_TOKEN",
"EDX_TOKEN",
"ESI_TOKEN",
"EDI_TOKEN",
"EBP_TOKEN",
"ESP_TOKEN",
"CS_TOKEN",
"DS_TOKEN",
"ES_TOKEN",
"FS_TOKEN",
"GS_TOKEN",
"SS_TOKEN",
"DREF_OPEN_TOKEN",
"DREF_CLOSE_TOKEN",
"MOD_TOKEN",
"NUMBER_END",
"GREATER_EQUAL_TOKEN",
"LESS_EQUAL_TOKEN",
"EIP_TOKEN",
"ASSIGNMENT_TOKEN",
"DWORD_TOKEN",
"WORD_TOKEN",
"BYTE_TOKEN",
"LOGICAL_AND_TOKEN",
"LOGICAL_OR_TOKEN",
"CF_TOKEN",
"PF_TOKEN",
"AF_TOKEN",
"ZF_TOKEN",
"SF_TOKEN",
"IF_TOKEN",
"DF_TOKEN",
"OF_TOKEN",
"VM_TOKEN",
"AC_TOKEN",
"BEGIN_BRACKET",
"END_BRACKET",
"NOT_EQUAL_TOKEN"
};
BYTE TokenIndex[256];
BYTE TokenClass[256];
BYTE TokenType[256];
LONG TokenValue[256];
LONG TokenCount;
LONG numStack[NUM_STACK_SIZE];
LONG *sp;
LONG *tos;
LONG *bos;
LONG contextStack[CONTEXT_STACK_SIZE];
LONG *c_sp;
LONG *c_tos;
LONG *c_bos;
LONG booleanStack[BOOL_STACK_SIZE];
LONG *b_sp;
LONG *b_tos;
LONG *b_bos;
LONG logicalStack[LOGICAL_STACK_SIZE];
LONG *l_sp;
LONG *l_tos;
LONG *l_bos;
extern void CopyData(LONG *src, LONG *dest, LONG len);
extern void CopyDataB(LONG *src, LONG *dest, LONG len);
extern void SetData(LONG *dest, LONG value, LONG len);
extern void SetDataB(LONG *dest, LONG value, LONG len);
extern void SetDataD(LONG *dest, LONG value, LONG len);
extern long printfScreenWithAttribute(void *screen, LONG attr, char *format, ...);
extern long printfScreen(void *screen, char *format, ...);
extern long issymbol(long chr);
extern LONG GetValueFromSymbol(BYTE *symbolName);
LONG expressLock = 0;
LONG GetNumber(BYTE *p, BYTE **rp, LONG *opl)
{
BYTE *op;
LONG c = 0, decimal = 0, hex_found = 0;
op = p;
while (*p)
{
if (*p >= '0' && *p <= '9')
p++;
else if (*p >= 'A' && *p <= 'F')
{
hex_found = 1;
p++;
}
else if (*p >= 'a' && *p <= 'f')
{
hex_found = 1;
p++;
}
else if (*p == 'R')
{
decimal = 1;
p++;
}
else if (*p == 'r')
{
decimal = 1;
p++;
}
else
break;
}
if (rp)
*rp = p;
if (opl)
*opl = (LONG)((LONG)p - (LONG) op);
p = op;
if ((decimal) && (!hex_found))
{
// parse as decimal number;
while (*p)
{
if (*p >= '0' && *p <= '9')
c = (c * 10) + (*p - '0');
else
break;
p++;
}
}
else
{
// parse as hex number;
while (*p)
{
if (*p >= '0' && *p <= '9')
c = (c << 4) | (*p - '0');
else if (*p >= 'A' && *p <= 'F')
c = (c << 4) | (*p - 'A' + 10);
else if (*p >= 'a' && *p <= 'f')
c = (c << 4) | (*p - 'a' + 10);
else
break;
p++;
}
}
return (c);
}
BYTE *parseTokens(StackFrame *stackFrame, BYTE *p)
{
register LONG i, value;
BYTE symbol[100], *sym, *symt;
BYTE *tmp, *op;
LONG delta;
op = p;
TokenCount = 0;
SetData((LONG *) &TokenValue[0], 0, 256);
SetData((LONG *) &TokenType[0], 0, 256);
SetData((LONG *) &TokenIndex[0], 0, 256);
SetData((LONG *) &TokenClass[0], 0, 256);
while (TokenCount < 200 && (LONG)p - (LONG)op < 200)
{
// symbols never start with a number
if (isalpha(*p) || *p == '_' || *p == '@' || *p == '$')
{
sym = p;
symt = symbol;
for (i=0; i < 100 && issymbol(*sym); i++)
*symt++ = *sym++;
*symt = '\0';
value = GetValueFromSymbol(symbol);
if (value != (LONG) -1)
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = value;
TokenType[TokenCount++] = NUMBER_TOKEN;
p = sym; // bump the pointer past the symbol
}
}
if (stackFrame)
{
switch (*p)
{
case '\0':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = NULL_TOKEN;
return (p);
case ']':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DREF_CLOSE_TOKEN;
p++;
break;
case '(':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = BB_TOKEN;
p++;
break;
case ')':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EB_TOKEN;
p++;
break;
case '+':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = PLUS_TOKEN;
p++;
break;
case '-':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = MINUS_TOKEN;
p++;
break;
case '*':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = MULTIPLY_TOKEN;
p++;
break;
case '/':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DIVIDE_TOKEN;
p++;
break;
case '%':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = MOD_TOKEN;
p++;
break;
case '~':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = NEG_TOKEN;
p++;
break;
case '^':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = XOR_TOKEN;
p++;
break;
case '!':
p++;
if (*p == '=')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = NOT_EQUAL_TOKEN;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = NOT_TOKEN;
break;
case ' ': // drop spaces on the floor
p++;
break;
//
// These cases require special handling
//
case 'p':
case 'P':
p++;
if (*p == 'F' || *p == 'f')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & PF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = PF_TOKEN;
p++;
break;
}
break;
case 'z':
case 'Z':
p++;
if (*p == 'F' || *p == 'f')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & ZF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = ZF_TOKEN;
p++;
break;
}
break;
case 'i':
case 'I':
p++;
if (*p == 'F' || *p == 'f')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & IF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = IF_TOKEN;
p++;
break;
}
break;
case 'o':
case 'O':
p++;
if (*p == 'F' || *p == 'f')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & OF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = OF_TOKEN;
p++;
break;
}
break;
case 'v':
case 'V':
p++;
if (*p == 'M' || *p == 'm')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & VM_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = VM_TOKEN;
p++;
break;
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'a':
case 'A':
tmp = p;
tmp++;
if ((*tmp == 'F' || *tmp == 'f') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & AF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = AF_TOKEN;
p++;
p++;
break;
}
if ((*tmp == 'C' || *tmp == 'c') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & AC_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = AC_TOKEN;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'b':
case 'B':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'c':
case 'C':
tmp = p;
tmp++;
if (*tmp == 'S' || *tmp == 's')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tCS;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = CS_TOKEN;
p++;
p++;
break;
}
if ((*tmp == 'F' || *tmp == 'f') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & CF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = CF_TOKEN;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'd':
case 'D':
tmp = p;
tmp++;
if (*tmp == 'S' || *tmp == 's')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tDS;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DS_TOKEN;
p++;
p++;
break;
}
if ((*tmp == 'F' || *tmp == 'f') && (*(tmp + 1) == ' ' || *(tmp + 1) == '=' ))
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & DF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DF_TOKEN;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'e':
case 'E':
tmp = p;
tmp++;
if (*tmp == 'A' || *tmp == 'a')
{
tmp++;
if (*tmp == 'X' || *tmp == 'x')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tEAX;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EAX_TOKEN;
p++;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
}
if (*tmp == 'B' || *tmp == 'b')
{
tmp++;
if (*tmp == 'X' || *tmp == 'x')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tEBX;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EBX_TOKEN;
p++;
p++;
p++;
break;
}
if (*tmp == 'P' || *tmp == 'p')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tEBP;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EBP_TOKEN;
p++;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
}
if (*tmp == 'C' || *tmp == 'c')
{
tmp++;
if (*tmp == 'X' || *tmp == 'x')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tECX;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = ECX_TOKEN;
p++;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
}
if (*tmp == 'D' || *tmp == 'd')
{
tmp++;
if (*tmp == 'X' || *tmp == 'x')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tEDX;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EDX_TOKEN;
p++;
p++;
p++;
break;
}
if (*tmp == 'I' || *tmp == 'i')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tEDI;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EDI_TOKEN;
p++;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
}
if (*tmp == 'S' || *tmp == 's')
{
tmp++;
if (*tmp == 'P' || *tmp == 'p')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tESP;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = ESP_TOKEN;
p++;
p++;
p++;
break;
}
if (*tmp == 'I' || *tmp == 'i')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tESI;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = ESI_TOKEN;
p++;
p++;
p++;
break;
}
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tES;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = ES_TOKEN;
p++;
p++;
break;
}
if (*tmp == 'I' || *tmp == 'i')
{
tmp++;
if (*tmp == 'P' || *tmp == 'p')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tEIP;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EIP_TOKEN;
p++;
p++;
p++;
break;
}
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'f':
case 'F':
tmp = p;
tmp++;
if (*tmp == 'S' || *tmp == 's')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tFS;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = FS_TOKEN;
p++;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenValue[TokenCount] = GetNumber(p, &p, &delta);
TokenType[TokenCount++] = NUMBER_TOKEN;
break;
case 'g':
case 'G': // GS:
p++;
if (*p == 'S' || *p == 's')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tGS;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = GS_TOKEN;
p++;
break;
}
break;
case 's':
case 'S':
p++;
if (*p == 'S' || *p == 's')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSS;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = SS_TOKEN;
p++;
break;
}
if (*p == 'F' || *p == 'f')
{
if (stackFrame)
TokenValue[TokenCount] = stackFrame->tSystemFlags & SF_FLAG;
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = SF_TOKEN;
p++;
break;
}
break;
case '[':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DREF_OPEN_TOKEN;
p++;
if (*p == 'D' || *p == 'd')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DWORD_TOKEN;
p++;
break;
}
if (*p == 'W' || *p == 'w')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = WORD_TOKEN;
p++;
break;
}
if (*p == 'B' || *p == 'b')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = BYTE_TOKEN;
p++;
break;
}
break;
case '=':
p++;
if (*p == '=')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EQUAL_TOKEN;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = ASSIGNMENT_TOKEN;
break;
case '<':
p++;
if (*p == '<')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = LEFT_SHIFT_TOKEN;
p++;
break;
}
if (*p == '=')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = LESS_EQUAL_TOKEN;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = LESS_TOKEN;
break;
case '>':
p++;
if (*p == '>')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = RIGHT_SHIFT_TOKEN;
p++;
break;
}
if (*p == '=')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = GREATER_EQUAL_TOKEN;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = GREATER_TOKEN;
break;
case '|':
p++;
if (*p == '|')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = LOGICAL_OR_TOKEN;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = OR_TOKEN;
break;
case '&':
p++;
if (*p == '&')
{
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = LOGICAL_AND_TOKEN;
p++;
break;
}
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = AND_TOKEN;
break;
default: // if we get a default, drop the character on the floor
p++;
break;
}
}
else
{
switch (*p)
{
case '\0':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = NULL_TOKEN;
return (p);
case ']':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DREF_CLOSE_TOKEN;
p++;
break;
case '(':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = BB_TOKEN;
p++;
break;
case ')':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = EB_TOKEN;
p++;
break;
case '+':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = PLUS_TOKEN;
p++;
break;
case '-':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = MINUS_TOKEN;
p++;
break;
case '*':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = MULTIPLY_TOKEN;
p++;
break;
case '/':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = DIVIDE_TOKEN;
p++;
break;
case '%':
TokenIndex[TokenCount] = (LONG) ((LONG) p - (LONG) op);
TokenType[TokenCount++] = MOD_TOKEN;
p++;