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Editorial Team
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Asked: 2026-06-05T04:22:42+00:00

all, here is the gramma: columnName (‘,’ columnName)* -> ^(SM_TOK columnName) I want the

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all, here is the gramma:

columnName (‘,’ columnName)* -> ^(SM_TOK columnName)

I want the output ast of “A,B” to have multiple SM_TOK nodes , like : (SM_TOK A) (SM_TOK B)

But,currently,I only have: (SM_TOK A)

It seems that ‘B’ will be ignored.

Can anyone help me to fix this gramma?

Thanks!

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1 Answer

  1. Editorial Team

    Your left side specifies one or more columnName items, but the right side mentions only one. Try adding a +, like this:

    columnName (',' columnName)* -> ^((SM_TOK columnName)+)
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