[antlr-interest] Location dependent token?

[Mats Ekberg]

Lets say a three letter word in uppercase can mean one of two tings
like:

  10  EUR
where EUR means a monetary unit
  
  10 EUR / TNE
where EUR still means a monetary unit but the three letters TNE now
means a measurement uniot.

How can that be expressed in a grammar??

/mats
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