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fix input error handling

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This commit is contained in:
Felix Roos 2022-02-07 22:24:16 +01:00
parent cf7a158944
commit e9b2bb6169
1 changed files with 7 additions and 12 deletions
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19
repl/src/App.tsx
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@ -53,31 +53,26 @@ function App() {
},
[pattern]
),
onSchedule: useCallback(
(_events, cycle) => {
// console.log('schedule', _events, cycle);
logCycle(_events, cycle);
},
[pattern]
),
onSchedule: useCallback((_events, cycle) => logCycle(_events, cycle), [pattern]),
ready: !!pattern,
});
// parse pattern when code changes
useEffect(() => {
try {
let _pattern;
let _pattern: Pattern;
try {
_pattern = h(code);
setMode('pegjs'); // haskell mode does not recognize quotes, pegjs looks ok by accident..
// console.log('h _pattern', _pattern);
} catch (err) {
setMode('javascript');
// code is not haskell like
_pattern = parse(code);
// console.log('not haskell..', _pattern);
if (_pattern?.constructor?.name !== 'Pattern') {
const message = `got "${typeof _pattern}" instead of pattern`;
throw new Error(message + (typeof _pattern === 'function' ? 'did you foget to call a function?' : ''));
}
}
setPattern(_pattern);
// cycle.query(cycle.activeCycle()); // reschedule active cycle
setPattern(() => _pattern); // need arrow function here! otherwise if user returns a function, react will think it's a state reducer
setError(undefined);
} catch (err: any) {
console.warn(err);