PyList* CRowSet::_GetColumnList() const
{
PyRep* r = FindKeyword( "columns" );
assert( r );
return r->AsList();
}
PyDict* GPSTransportClosed::GetReasonArgs() const
{
PyRep* r = FindKeyword( "reasonArgs" );
assert( r );
return pyAs(Dict, r);
}
DBRowDescriptor* CRowSet::_GetRowDesc() const
{
PyRep* r = FindKeyword( "header" );
assert( r );
return (DBRowDescriptor*)r->AsObjectEx();
}
PyDict* UserError::_GetDictKeywords() const
{
PyRep* r = FindKeyword( "dict" );
assert( r );
return pyAs(Dict, r);
}
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;
}
void ParseIdentifier()
{
StartToken();
lastSourceToken.tokenType = TokenType::Identifier;
while (index < length && IsIdentifierSafe(Current()))
{
++lastSourceToken.length;
Advance();
}
buffer.assign(source + lastSourceToken.offset, lastSourceToken.length);
auto tokenIndex = FindKeyword(buffer.data());
if (tokenIndex != -1)
{
lastSourceToken.tokenType = TokenType::Reserved;
lastSourceToken.tokenIndex = tokenIndex;
}
}
/**
* Read an identifier.
*/
void ReadIdentifier()
{
size_t count = 0;
/* Read the rest of the identifier */
do {
this->buf[count++] = this->current_char;
this->Next();
if (count >= buf_len) {
/* Scale the buffer if required */
this->buf_len *= 2;
this->buf = (char *)realloc(this->buf, sizeof(*this->buf) * this->buf_len);
}
} while ((isalpha(this->current_char) || this->current_char == '_' || isdigit(this->current_char)));
this->buf[count] = '\0';
free(this->string);
this->string = strdup(this->buf);
this->token = FindKeyword(this->string);
}
