Fix Linux compilation issue of ProfilingATNSimulator

* NSEC_PER_SEC is available via CDispatch bindings, which are not currently imported * Importing them would be heavy handed compared to replacing with the constant (and leaving a comment) Signed-off-by: Will Ziener-Dignazio <[email protected]>
antlr · Apr 22, 2024 · 06cbc22 · 06cbc22
1 parent 380ce4b
commit 06cbc22
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/runtime/Swift/Sources/Antlr4/atn/ProfilingATNSimulator.swift b/runtime/Swift/Sources/Antlr4/atn/ProfilingATNSimulator.swift
@@ -60,7 +60,7 @@ public class ProfilingATNSimulator: ParserATNSimulator {
         let start = ProcessInfo.processInfo.systemUptime //System.nanoTime(); // expensive but useful info
         let alt: Int = try  super.adaptivePredict(input, decision, outerContext)
         let stop = ProcessInfo.processInfo.systemUptime  //System.nanoTime();
-        decisions[decision].timeInPrediction += Int64((stop - start) * TimeInterval(NSEC_PER_SEC))
+        decisions[decision].timeInPrediction += Int64((stop - start) * TimeInterval(1_000_000_000)) // Nanoseconds per 1 Second
         decisions[decision].invocations += 1
 
         let SLL_k: Int64 = Int64(_sllStopIndex - _startIndex + 1)