Simple numeric expression containing only literals yields error

AAVSO / VStar

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Simple numeric expression containing only literals yields error #441

Closed dbenn closed 1 month ago

dbenn commented 1 month ago

The following:

f(n:real) : real { 12.0 }

f(4)

yields:

Cannot invoke "org.aavso.tools.vstar.vela.Operation.ordinal()" because the return value of "org.aavso.tools.vstar.vela.AST.getOp()" is null

when 12.0 should be returned.

Notes

While 4 is passed as an actual parameter, it is not used in the body of the function.
Other values such as 12, "12" or 12+2 will give the same error.

dbenn commented 1 month ago

Note that such literal-only expressions will have been the subject of constant folding so that at execution time, no operator will be present in the AST, which is consistent with the error.