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Add exception handling to CallbackList.invoke #175

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Add exception handling to CallbackList.invoke #175

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9110d7d
Add exception handling to `CallbackList.invoke` to prevent this kind …
Feb 2, 2024
64e42c5
Add missing type definition
Feb 2, 2024
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21 changes: 20 additions & 1 deletion src/tink/core/Callback.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -226,9 +226,12 @@ class CallbackList<T> extends SimpleDisposable {
if (destructive)
dispose();

// Invoke all the cells, even if some of them throw exceptions. Another option would be to fail fast,
// but I think it's not nice to let one rogue cell mess things up for all the others.
final errors = [];
var length = cells.length;
for (i in 0...length)
cells[i].invoke(data);
try cells[i].invoke(data) catch (err:Dynamic) errors.push(err);

busy = false;

Expand All @@ -241,6 +244,22 @@ class CallbackList<T> extends SimpleDisposable {
if (queue.length > 0)
queue.shift()();
}

#if debug_tink
#if js
function dump(str) js.Browser.console.error(str);
#elseif sys
function dump(str) Sys.stderr().writeString('${str}\n');
#else
function dump(str) trace(str);
#end
for (i => err in errors) dump('Callback $i barfed: $err');
#end
switch errors.length {
case 0:
case 1: throw errors[0];
case _: throw errors;
}
}
});

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