public static CGExpr BuildExpression(FullCellAddr addr,
Dictionary<FullCellAddr, Variable> addressToVariable) {
Cell cell;
if (!addr.TryGetCell(out cell)) {
return new CGTextConst(TextValue.EMPTY);
}
else if (cell is NumberCell) {
return new CGNumberConst(((NumberCell)cell).value);
}
else if (cell is TextCell) {
return new CGTextConst(((TextCell)cell).value);
}
else if (cell is QuoteCell) {
return new CGTextConst(((QuoteCell)cell).value);
}
else if (cell is BlankCell) {
return new CGError("#FUNERR: Blank cell in function");
}
else if (cell is Formula) {
// Translate the expr relative to its containing cell at addr
CGExpressionBuilder cgBuilder = new CGExpressionBuilder(addressToVariable, addr);
Expr expr = ((Formula)cell).Expr;
expr.VisitorCall(cgBuilder);
return cgBuilder.result;
}
else if (cell is ArrayFormula) {
return new CGError("#FUNERR: Array formula in function");
}
else {
throw new ImpossibleException("BuildExpression: " + cell);
}
}
/// <summary>
/// Count number of references from cell at fromFca to cell address toFca
/// </summary>
private static int GetCount(FullCellAddr fromFca, FullCellAddr toFca)
{
int count = 0;
Cell fromCell;
if (fromFca.TryGetCell(out fromCell))
{
fromCell.DependsOn(fromFca,
delegate(FullCellAddr fca) {
if (toFca.Equals(fca))
{
count++;
}
});
}
return(count);
}
public static CGExpr BuildExpression(FullCellAddr addr,
Dictionary <FullCellAddr, Variable> addressToVariable)
{
Cell cell;
if (!addr.TryGetCell(out cell))
{
return(new CGTextConst(TextValue.EMPTY));
}
else if (cell is NumberCell)
{
return(new CGNumberConst(((NumberCell)cell).value));
}
else if (cell is TextCell)
{
return(new CGTextConst(((TextCell)cell).value));
}
else if (cell is QuoteCell)
{
return(new CGTextConst(((QuoteCell)cell).value));
}
else if (cell is BlankCell)
{
return(new CGError("#FUNERR: Blank cell in function"));
}
else if (cell is Formula)
{
// Translate the expr relative to its containing cell at addr
CGExpressionBuilder cgBuilder = new CGExpressionBuilder(addressToVariable, addr);
Expr expr = ((Formula)cell).Expr;
expr.VisitorCall(cgBuilder);
return(cgBuilder.result);
}
else if (cell is ArrayFormula)
{
return(new CGError("#FUNERR: Array formula in function"));
}
else
{
throw new ImpossibleException("BuildExpression: " + cell);
}
}
/// <summary>
/// Count number of references from cell at fromFca to cell address toFca
/// </summary>
private static int GetCount(FullCellAddr fromFca, FullCellAddr toFca) {
int count = 0;
Cell fromCell;
if (fromFca.TryGetCell(out fromCell)) {
fromCell.DependsOn(fromFca,
delegate(FullCellAddr fca) {
if (toFca.Equals(fca)) {
count++;
}
});
}
return count;
}
