static int ScanIdentifier()
{
unsigned char* start = CURSOR;
if('L' == *CURSOR)
{
if('\'' == CURSOR[1])
{
return ScanCharLiteral();
}
else if('\"' == CURSOR[1])
{
return ScanStringLiteral();
}
}
CURSOR++;
while(IsLetterOrDigit(*CURSOR))
{
CURSOR++;
}
return FindKeyword((char *)start, (int)(CURSOR - start));
}
/* 标示符扫描函数 */
static int ScanIdentifierOR (int def)
{
unsigned char *start = CURRENT;
int tok;
/* 处理宽字符或宽字符串 */
if ('L' == *CURRENT) {
/* 处理字符 */
if ('\'' == CURRENT[1])
return ScanCharLiteral ();
/* 处理宽字符串 */
if ('"' == CURRENT[1])
return ScanStringLiteral ();
}
if ( !IsLetterOrDigit (*CURRENT) )
return TK_BEGIN;
CURRENT++;
/* 字母和数字下画线都符合标示符的要求 */
while (IsLetterOrDigit (*CURRENT)) CURRENT++;
/* 判断是否是关键字 */
tok = FindKeyword ((char*)start, (int)(CURRENT - start));
if (TK_ID == tok) {
Symbol p;
/* 将字符串的值保存在字符串池中 */
TokenValue.p = InternStr ((char*)start, (int)(CURRENT - start));
// 该符号是define
if (!def && (p = LookupDefine (TokenValue.p))) {
LoadDefine (p);
return GetNextToken ();
}
} else
TokenValue.p = TokenString[tok];
return tok;
}
static struct Token matchIdentifier(void)
{
char *start = CURSOR;
CURSOR += 1;
while (IsLetterOrDigit(*CURSOR)) {
CURSOR += 1;
}
struct Token token;
token.type = TOKEN_ID;
char *pTokenVar = (char*)malloc(CURSOR - start);
strncpy(pTokenVar,start,CURSOR - start);
token.var.p = (void*)pTokenVar;
return token;
}