John Interrante created DAFFODIL-2331:
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Summary: Remove argType parameter from FNZeroArgExpr and derived
classes
Key: DAFFODIL-2331
URL: https://issues.apache.org/jira/browse/DAFFODIL-2331
Project: Daffodil
Issue Type: Improvement
Components: Clean Ups
Reporter: John Interrante
Expression.scala uses FNZeroArgExpr to implement fn:local-name,
fn:namespace-uri, dfdlx:outputTypeCalcNextSibling, dfdlx:repTypeValue, and
dfdlx:logicalTypeValue functions. It has to pass NodeInfo.XXX for the argType
parameter, even though the argType parameter shouldn't be needed if there are
zero arguments. Should we remove this parameter? It looks like argType is
used only in targetTypeForSubexpression, which should never be called in
FNZeroArgExpr since there are zero arguments.
If we remove the argType parameter, we also shouldn't need to pass argType to
the constructor for FNNamespaceURI0 and similar classes in FNFunctions.scala.
People who can answer questions about this issue are Steve Lawrence and myself
(although Steve can answer questions better).
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