mbeckerle commented on code in PR #1058:
URL: https://github.com/apache/daffodil/pull/1058#discussion_r1281100710
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daffodil-lib/src/main/scala/org/apache/daffodil/lib/api/Diagnostic.scala:
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@@ -308,4 +308,12 @@ trait WithDiagnostics {
* then one can proceed to run the compiled entity.
*/
def isError: Boolean
+
+ /**
+ * Helper method to check that isError is false, if not it throws
+ * a usage error caused by illegal state caused by a compilation error
+ */
+ def checkNotError(): Unit = {
+ Assert.usage(!isError, new
IllegalStateException(getDiagnostics.find(_.isError).get))
Review Comment:
We can pass the constructor of IllegalStateException both a message string
AND a cause.
Then the string can explain that you must call 'isError' to ensure there are
not errors, but the error creating that situation is still featured also.
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