/*
** Return the length of the token that begins at z[0].
** Store the token type in *tokenType before returning.
*/
static int sqliteGetToken(const unsigned char *z, int *tokenType){
int i;
switch( *z ){
case ' ': case '\t': case '\n': case '\f': case '\r': {
for(i=1; isspace(z[i]); i++){}
*tokenType = TK_SPACE;
return i;
}
case '-': {
if( z[1]=='-' ){
for(i=2; z[i] && z[i]!='\n'; i++){}
*tokenType = TK_COMMENT;
return i;
}
*tokenType = TK_MINUS;
return 1;
}
case '(': {
*tokenType = TK_LP;
return 1;
}
case ')': {
*tokenType = TK_RP;
return 1;
}
case ';': {
*tokenType = TK_SEMI;
return 1;
}
case '+': {
*tokenType = TK_PLUS;
return 1;
}
case '*': {
*tokenType = TK_STAR;
return 1;
}
case '/': {
if( z[1]!='*' || z[2]==0 ){
*tokenType = TK_SLASH;
return 1;
}
for(i=3; z[i] && (z[i]!='/' || z[i-1]!='*'); i++){}
if( z[i] ) i++;
*tokenType = TK_COMMENT;
return i;
}
case '%': {
*tokenType = TK_REM;
return 1;
}
case '=': {
*tokenType = TK_EQ;
return 1 + (z[1]=='=');
}
case '<': {
if( z[1]=='=' ){
*tokenType = TK_LE;
return 2;
}else if( z[1]=='>' ){
*tokenType = TK_NE;
return 2;
}else if( z[1]=='<' ){
*tokenType = TK_LSHIFT;
return 2;
}else{
*tokenType = TK_LT;
return 1;
}
}
case '>': {
if( z[1]=='=' ){
*tokenType = TK_GE;
return 2;
}else if( z[1]=='>' ){
*tokenType = TK_RSHIFT;
return 2;
}else{
*tokenType = TK_GT;
return 1;
}
}
case '!': {
if( z[1]!='=' ){
*tokenType = TK_ILLEGAL;
return 2;
}else{
*tokenType = TK_NE;
return 2;
}
}
case '|': {
if( z[1]!='|' ){
*tokenType = TK_BITOR;
return 1;
}else{
*tokenType = TK_CONCAT;
return 2;
}
}
case ',': {
*tokenType = TK_COMMA;
return 1;
}
case '&': {
*tokenType = TK_BITAND;
return 1;
}
case '~': {
*tokenType = TK_BITNOT;
return 1;
}
case '\'': case '"': {
int delim = z[0];
for(i=1; z[i]; i++){
if( z[i]==delim ){
if( z[i+1]==delim ){
i++;
}else{
break;
}
}
}
if( z[i] ) i++;
*tokenType = TK_STRING;
return i;
}
case '.': {
*tokenType = TK_DOT;
return 1;
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': {
*tokenType = TK_INTEGER;
for(i=1; isdigit(z[i]); i++){}
if( z[i]=='.' && isdigit(z[i+1]) ){
i += 2;
while( isdigit(z[i]) ){ i++; }
*tokenType = TK_FLOAT;
}
if( (z[i]=='e' || z[i]=='E') &&
( isdigit(z[i+1])
|| ((z[i+1]=='+' || z[i+1]=='-') && isdigit(z[i+2]))
)
){
i += 2;
while( isdigit(z[i]) ){ i++; }
*tokenType = TK_FLOAT;
}
return i;
}
case '[': {
for(i=1; z[i] && z[i-1]!=']'; i++){}
*tokenType = TK_ID;
return i;
}
case '?': {
*tokenType = TK_VARIABLE;
return 1;
}
default: {
if( (*z&0x80)==0 && !isIdChar[*z] ){
break;
}
for(i=1; (z[i]&0x80)!=0 || isIdChar[z[i]]; i++){}
*tokenType = sqliteKeywordCode((char*)z, i);
return i;
}
}
*tokenType = TK_ILLEGAL;
return 1;
}
/*
** Return the length of the token that begins at z[0]. Return
** -1 if the token is (or might be) incomplete. Store the token
** type in *tokenType before returning.
*/
int sqliteGetToken(const WCHAR *z, int *tokenType, int *skip){
int i;
*skip = 0;
switch( *z ){
case ' ': case '\t': case '\n': case '\f':
for(i=1; isSpace(z[i]); i++){}
*tokenType = TK_SPACE;
return i;
case '-':
if( z[1]==0 ) return -1;
*tokenType = TK_MINUS;
return 1;
case '(':
*tokenType = TK_LP;
return 1;
case ')':
*tokenType = TK_RP;
return 1;
case '*':
*tokenType = TK_STAR;
return 1;
case '=':
*tokenType = TK_EQ;
return 1;
case '<':
if( z[1]=='=' ){
*tokenType = TK_LE;
return 2;
}else if( z[1]=='>' ){
*tokenType = TK_NE;
return 2;
}else{
*tokenType = TK_LT;
return 1;
}
case '>':
if( z[1]=='=' ){
*tokenType = TK_GE;
return 2;
}else{
*tokenType = TK_GT;
return 1;
}
case '!':
if( z[1]!='=' ){
*tokenType = TK_ILLEGAL;
return 2;
}else{
*tokenType = TK_NE;
return 2;
}
case '?':
*tokenType = TK_WILDCARD;
return 1;
case ',':
*tokenType = TK_COMMA;
return 1;
case '`': case '\'': {
int delim = z[0];
for(i=1; z[i]; i++){
if( z[i]==delim )
break;
}
if( z[i] ) i++;
if( delim == '`' )
*tokenType = TK_ID;
else
*tokenType = TK_STRING;
return i;
}
case '.':
if( !isDigit(z[1]) ){
*tokenType = TK_DOT;
return 1;
}
/* Fall through */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
*tokenType = TK_INTEGER;
for(i=1; isDigit(z[i]); i++){}
return i;
case '[':
for(i=1; z[i] && z[i-1]!=']'; i++){}
*tokenType = TK_ID;
return i;
default:
if( !isIdChar[*z] ){
break;
}
for(i=1; isIdChar[z[i]]; i++){}
*tokenType = sqliteKeywordCode(z, i);
if( *tokenType == TK_ID && z[i] == '`' ) *skip = 1;
return i;
}
*tokenType = TK_ILLEGAL;
return 1;
}
