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[evaluator] hasActiveRequest() considered harmful

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John Hui
2025-11-07 15:12:52 -08:00
parent 6c997ae561
commit cbae2fc9b9
1 changed files with 4 additions and 0 deletions
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4
include/swift/AST/Evaluator.h
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@@ -304,6 +304,10 @@ public:
void clearCache() { cache.clear(); }
/// Is the given request, or an equivalent, currently being evaluated?
///
/// WARN: do not rely on this function to avoid request cycles. Doing so can
/// lead to bugs that are very difficult to debug, especially when request
/// caching is involved.
template <typename Request>
bool hasActiveRequest(const Request &request) const {
return activeRequests.count(ActiveRequest(request));