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Keywords Now() and Today() missing from the grammar #80

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swan-verily opened this issue Apr 13, 2023 · 0 comments
Open

Keywords Now() and Today() missing from the grammar #80

swan-verily opened this issue Apr 13, 2023 · 0 comments

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@swan-verily
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Issue/Question

Now(), Today() and TimeOfDay are supported operators in CQL: https://cql.hl7.org/02-authorsguide.html, but they are not included in the Antlr4 grammar.

IIUC, Antlr4 listners can only listen for the defined keywords in the grammar. In this case, how does a CQL implementation parse and evaluate an expression like Now() + 7 days?
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