/*!
\param Func
*/
xbShort xbExpn::ProcessFunction( char * Func )
{
/* 1 - pop function from stack
2 - verify function name and get no of parms needed
3 - verify no of parms >= remainder of stack
4 - pop parms off stack
5 - execute function
6 - push result back on stack
*/
char *buf = 0;
xbExpNode *p1, *p2, *p3, *WorkNode, *FuncNode;
xbShort ParmsNeeded,len;
char ptype = 0; /* process type s=string, l=logical, d=double */
xbDouble DoubResult = 0;
xbLong IntResult = 0;
FuncNode = (xbExpNode *) Pop();
ParmsNeeded = GetFuncInfo( Func, 1 );
if( ParmsNeeded == -1 ) {
return XB_INVALID_FUNCTION;
}
else {
ParmsNeeded = 0;
if( FuncNode->Sibling1 ) ParmsNeeded++;
if( FuncNode->Sibling2 ) ParmsNeeded++;
if( FuncNode->Sibling3 ) ParmsNeeded++;
}
if( ParmsNeeded > GetStackDepth())
return XB_INSUFFICIENT_PARMS;
p1 = p2 = p3 = NULL;
if( ParmsNeeded > 2 ) p3 = (xbExpNode *) Pop();
if( ParmsNeeded > 1 ) p2 = (xbExpNode *) Pop();
if( ParmsNeeded > 0 ) p1 = (xbExpNode *) Pop();
memset( WorkBuf, 0x00, WorkBufMaxLen+1);
if( strncmp( Func, "ABS", 3 ) == 0 ) {
ptype = 'd';
DoubResult = ABS( GetDoub( p1 ));
}
else if( strncmp( Func, "ASC", 3 ) == 0 ) {
ptype = 'd';
DoubResult = ASC( p1->StringResult );
}
else if( strncmp( Func, "AT", 2 ) == 0 ) {
ptype = 'd';
DoubResult = AT( p1->StringResult, p2->StringResult );
}
else if( strncmp( Func, "CDOW", 4 ) == 0 ) {
ptype = 's';
buf = CDOW( p1->StringResult );
}
else if( strncmp( Func, "CHR", 3 ) == 0 ) {
ptype = 's';
buf = CHR( GetInt( p1 ));
}
else if( strncmp( Func, "CMONTH", 6 ) == 0 ) {
ptype = 's';
buf = CMONTH( p1->StringResult );
}
else if( strncmp( Func, "CTOD", 4 ) == 0 ) {
ptype = 's';
buf = CTOD( p1->StringResult );
}
else if( strncmp( Func, "DATE", 4 ) == 0 ) {
ptype = 's';
buf = DATE();
}
else if( strncmp( Func, "DAY", 3 ) == 0 ) {
ptype = 'd';
DoubResult = DAY( p1->StringResult );
}
else if( strncmp( Func, "DESCEND", 7 ) == 0 && p1->ExpressionType == 'C' ) {
ptype = 's';
buf = DESCEND( p1->StringResult.c_str() );
}
else if( strncmp( Func, "DESCEND", 7 ) == 0 && p1->ExpressionType == 'N' ) {
ptype = 'd';
DoubResult = DESCEND( GetDoub( p1 ));
}
else if( strncmp( Func, "DESCEND", 7 ) == 0 && p1->ExpressionType == 'D' ) {
xbDate d( p1->StringResult );
ptype = 'd';
DoubResult = DESCEND( d );
}
else if( strncmp( Func, "DOW", 3 ) == 0 ) {
ptype = 'd';
DoubResult = DOW( p1->StringResult );
}
else if( strncmp( Func, "DTOC", 4 ) == 0 ) {
ptype = 's';
buf = DTOC( p1->StringResult );
}
else if( strncmp( Func, "DTOS", 4 ) == 0 ) {
ptype = 's';
buf = DTOS( p1->StringResult );
}
else if( strncmp( Func, "EXP", 3 ) == 0 ) {
ptype = 'd';
DoubResult = EXP( GetDoub( p1 ));
}
else if( strncmp( Func, "IIF", 3 ) == 0 ){
ptype = 's';
buf = IIF( p1->IntResult, p2->StringResult, p3->StringResult );
}
else if( strncmp( Func, "INT", 3 ) == 0 ) {
ptype = 'd';
DoubResult = INT( GetDoub( p1 ));
}
else if( strncmp( Func, "ISALPHA", 7 ) == 0 ) {
ptype = 'l';
IntResult = ISALPHA( p1->StringResult );
}
else if( strncmp( Func, "ISLOWER", 7 ) == 0 ) {
ptype = 'l';
IntResult = ISLOWER( p1->StringResult );
}
else if( strncmp( Func, "ISUPPER", 7 ) == 0 ) {
ptype = 'l';
IntResult = ISUPPER( p1->StringResult );
}
else if( strncmp( Func, "LEN", 3 ) == 0 ) {
ptype = 'd';
DoubResult = LEN( p1->StringResult );
}
else if( strncmp( Func, "LEFT", 4 ) == 0 ) {
ptype = 's';
buf = LEFT( p1->StringResult, INT( p2->DoubResult ));
}
else if( strncmp( Func, "LTRIM", 5 ) == 0 ) {
ptype = 's';
buf = LTRIM( p1->StringResult );
}
else if( strncmp( Func, "LOG", 3 ) == 0 ) {
ptype = 'd';
DoubResult = LOG( GetDoub( p1 ));
}
else if( strncmp( Func, "LOWER", 5 ) == 0 ) {
ptype = 's';
buf = LOWER( p1->StringResult );
}
else if( strncmp( Func, "MAX", 3 ) == 0 ) {
ptype = 'd';
DoubResult = MAX( GetDoub( p1 ), GetDoub( p2 ));
}
else if( strncmp( Func, "MIN", 3 ) == 0 ) {
ptype = 'd';
DoubResult = MIN( GetDoub( p1 ), GetDoub( p2 ));
}
else if( strncmp( Func, "MONTH", 5 ) == 0 ) {
ptype = 'd';
DoubResult = MONTH( p1->StringResult );
}
else if( strncmp( Func, "RECNO", 5 ) == 0 )
{
ptype = 'd';
DoubResult = RECNO( FuncNode->dbf );
}
else if( strncmp( Func, "REPLICATE", 9 ) == 0 ) {
ptype = 's';
buf = REPLICATE( p1->StringResult, GetInt( p2 ));
}
else if( strncmp( Func, "RIGHT", 5 ) == 0 ) {
ptype = 's';
buf = RIGHT( p1->StringResult, GetInt( p2 ));
}
else if( strncmp( Func, "RTRIM", 5 ) == 0 ) {
ptype = 's';
buf = RTRIM( p1->StringResult );
}
else if( strncmp( Func, "SPACE", 5 ) == 0 ) {
ptype = 's';
buf = SPACE( INT( GetDoub( p1 )));
}
else if( strncmp( Func, "SQRT", 4 ) == 0 ) {
ptype = 'd';
DoubResult = SQRT( GetDoub( p1 ));
}
else if( strncmp( Func, "STRZERO", 7 ) == 0 && ParmsNeeded == 1 ) {
ptype = 's';
buf = STRZERO( p1->StringResult );
}
else if( strncmp( Func, "STRZERO", 7 ) == 0 && ParmsNeeded == 2 ) {
ptype = 's';
buf = STRZERO( p1->StringResult, GetInt( p2 ));
}
else if( strncmp( Func, "STRZERO", 7 ) == 0 && ParmsNeeded == 3 ) {
ptype = 's';
buf = STRZERO( p1->StringResult, GetInt( p2 ), GetInt( p3 ));
}
else if( strncmp( Func, "STR", 3 ) == 0 && p3 ) {
ptype = 's';
if(p1->ExpressionType == 'N')
buf = STR( p1->DoubResult, GetInt( p2 ), GetInt( p3 ));
else
buf = STR( p1->StringResult, GetInt( p2 ), GetInt( p3 ));
}
else if( strncmp( Func, "STR", 3 ) == 0 && p2 ) {
ptype = 's';
buf = STR( p1->StringResult, GetInt( p2 ));
}
else if( strncmp( Func, "STR", 3 ) == 0 && p1 ) {
ptype = 's';
buf = STR( p1->StringResult );
}
else if( strncmp( Func, "SUBSTR", 6 ) == 0 ) {
ptype = 's';
buf = SUBSTR( p1->StringResult, GetInt( p2 ), GetInt( p3 ));
}
else if( strncmp( Func, "TRIM", 4 ) == 0 ) {
ptype = 's';
buf = TRIM( p1->StringResult );
}
else if( strncmp( Func, "UPPER", 5 ) == 0 ) {
ptype = 's';
buf = UPPER( p1->StringResult );
}
else if( strncmp( Func, "VAL", 3 ) == 0 ) {
ptype = 'd';
DoubResult = VAL( p1->StringResult );
}
else if( strncmp( Func, "YEAR", 4 ) == 0 ) {
ptype = 'd';
DoubResult = YEAR( p1->StringResult );
}
if( p1 && !p1->InTree ) delete p1;
if( p2 && !p2->InTree ) delete p2;
if( p3 && !p3->InTree ) delete p3;
if( !FuncNode->InTree ) delete FuncNode;
if( buf ){
len = strlen( buf );
WorkNode = new xbExpNode;
if( !WorkNode )
return XB_NO_MEMORY;
WorkNode->ResultLen = len + 1;
} else {
len = 0;
WorkNode = new xbExpNode;
if( !WorkNode )
return XB_NO_MEMORY;
WorkNode->ResultLen = 0;
}
switch( ptype ){
case 's': /* string or char result */
WorkNode->DataLen = len;
WorkNode->ExpressionType = 'C';
WorkNode->Type = 's';
WorkNode->StringResult = buf;
break;
case 'd': /* numeric result */
WorkNode->DataLen = 0;
WorkNode->ExpressionType = 'N';
WorkNode->Type = 'd';
WorkNode->DoubResult = DoubResult;
break;
case 'l': /* logical result */
WorkNode->DataLen = 0;
WorkNode->ExpressionType = 'L';
WorkNode->Type = 'l';
WorkNode->IntResult = IntResult;
break;
default:
std::cout << "\nInternal error. " << ptype;
break;
}
Push(WorkNode);
return XB_NO_ERROR;
}
/*
* Update the screen.
*/
void scr_update(void)
{
cell *bp;
cell *sp;
cell so;
cell cur_so = 0;
int i;
int j;
int ccol;
/* Always leave cursor after last displayed point */
curscreen[D_LAST * B_COLS - 1] = -1;
if (score != curscore) {
moveto(0, 0);
printf("Score: %d", score);
curscore = score;
}
/* Draw preview of next pattern */
if ((showpreview) && (nextshape != lastshape)) {
int i;
static int r = 5, c = 2;
int tr, tc, t;
lastshape = nextshape;
/* Clean */
resume_normal();
moveto(r - 1, c - 1);
putstr(" ");
moveto(r, c - 1);
putstr(" ");
moveto(r + 1, c - 1);
putstr(" ");
moveto(r + 2, c - 1);
putstr(" ");
moveto(r - 3, c - 2);
putstr("Next shape:");
/* Draw */
start_standout(nextshape->color);
moveto(r, 2 * c);
putstr(" ");
for (i = 0; i < 3; i++) {
t = c + r * B_COLS;
t += nextshape->off[i];
tr = t / B_COLS;
tc = t % B_COLS;
moveto(tr, 2*tc);
putstr(" ");
}
resume_normal();
}
bp = &board[D_FIRST * B_COLS];
sp = &curscreen[D_FIRST * B_COLS];
for (j = D_FIRST; j < D_LAST; j++) {
ccol = -1;
for (i = 0; i < B_COLS; bp++, sp++, i++) {
if (*sp == (so = *bp))
continue;
*sp = so;
if (i != ccol) {
if (cur_so) {
resume_normal();
cur_so = 0;
}
moveto(RTOD(j), CTOD(i));
}
if (so != cur_so) {
if (so)
start_standout(so);
else
resume_normal();
cur_so = so;
}
putstr(" ");
ccol = i + 1;
/*
* Look ahead a bit, to avoid extra motion if
* we will be redrawing the cell after the next.
* Motion probably takes four or more characters,
* so we save even if we rewrite two cells
* `unnecessarily'. Skip it all, though, if
* the next cell is a different color.
*/
if ((i > STOP) || (sp[1] != bp[1]) || (so != bp[1]))
continue;
if (sp[2] != bp[2])
sp[1] = -1;
else if ((i < STOP) && (so == bp[2]) && (sp[3] != bp[3])) {
sp[2] = -1;
sp[1] = -1;
}
}
}
if (cur_so)
resume_normal();
console_flush(console);
}
