Mixing Visitor and Embedded Pattern

[jonestristand]

Is it possible to mix the visitor and embedded actions approach to semantics? Visitor pattern works fine for the majority of what I'm doing, but at the moment my number production is something like:

number = [DASH] (DIGIT | COMMA)+ (DOT DIGIT+)

and using the visitor approach means I get an array of the digits in order, but no information about the placement of the decimal point. When I try to use embedded action semantics to concatenate the tokens and return those, I still get the CST node in my visitor, not the returned value. Is there any way to do this?

[bd82]

I think this may be possible by accessing the last element in the CST_STACK.

• https://github.com/Chevrotain/chevrotain/blob/master/packages/chevrotain/src/parse/parser/traits/tree_builder.ts#L31

However, If you only need to distinguish between the digits before and after the dot
You can likely accomplish this with a simple LABEL

• https://chevrotain.io/documentation/10_1_2/interfaces/ConsumeMethodOpts.html#LABEL