I got this working by using the Repeat component instead of Capture in hourReg and minuteReg.
I'm not sure why that should matter, but Repeat is cleaner. I also got the transform to work by returning a Substring in the transform: of the ampmReg Regex.
import Cocoa
import Foundation
import RegexBuilder
let hourRef = Reference<Substring>()
let minuteRef = Reference<Substring>()
let hourReg = Regex {
Capture(as: hourRef) {
ChoiceOf {
Repeat(.digit, count: 2)
Repeat(.digit, count: 1)
}
}
}
let minuteReg = Regex {
Capture(as: minuteRef) {
ChoiceOf {
Repeat(.digit, count: 2)
Repeat(.digit, count: 1)
}
}
}
let ampmRef = Reference<Substring>()
let ampmReg = Regex {
Capture(as: ampmRef) {
ChoiceOf {
One("am")
One("pm")
One("a.m.")
One("p.m.")
}
} transform: {
return Substring($0.lowercased())
}
}.ignoresCase()
let timeWithoutSec = Regex {
hourReg
One(":")
minuteReg
ZeroOrMore(.whitespace)
ampmReg
}.ignoresCase()
let possibleTime = "1:20pM"
let timeMatchWithout = possibleTime.firstMatch(of: timeWithoutSec)
However, this version requires an 'am', 'pm' , 'a.m.', or 'p.m.' to be part of the string. To make this optional
I tried to change the timeWithoutSec Regex to:
let timeWithoutSec = Regex {
hourReg
One(":")
minuteReg
ZeroOrMore(.whitespace)
ZeroOrMore {
ampmReg
}
}.ignoresCase()
But this results in that odd Regex.Match optional storedCapture contains no some error message.
How can I make the ampmReg optional?
RJStover
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I just noticed that I could make the error go away if I remove the transform. But why does that matter. I still don't understand that error message.
Unfortunately NSTableView does not respond to layoutIfNeeded. But your suggestion led me into lookingat other possibilities.Instead of doing the selectRowIndexes: after the reloadData I set a BOOL flag, needsReselect.Then in the delegate tableView:objectValueForTableColumn:row: method I put this code:// If we are updating the table content at row 0 and we need to reset the selection to row 0
// then do that now.
if ((rowIndex == 0) && needsReselect) {
// Select row 0.
[objectCoordTable selectRowIndexes: [NSIndexSet indexSetWithIndex: 0] byExtendingSelection: NO];
// Get the rectangle for the table contents.
CGRect r = objectCoordTable.superview.layer.contentsRect;
// Narrow the rect to an area that is part of row 0.
NSRect row0 = NSMakeRect(0.0, r.size.height - 10.0, r.size.width, 5.0);
// Scroll to that rect
[objectCoordTable.superview scrollRectToVisible:row0];
needsReselect = NO;
}This seems a little more obvious that using a dispatch queue and it seems to work. Note that I had to explicitly resetthe scroll as well. I checked, and if I'm not in the middle of the tableView:objectValueForTableColumn: the scolladjusts without need to control it explicitly.It would be nice if there was a delegate method to mark the end of a reloadData, or an NSNotification about it.Thanks for the help.
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