I'm writing a interpreter for the FEEL expression language used in DMN (imicros-feel-interpreter).
Everything is fine beside the problem with the foreseen ambiguity in the language.
Unfortunately I have no idea, how to solve this problem with nearley.
FEEL allows names like Profit and loss
Dependent on the scope they can be a name Profit and loss or the logical expression Profit and loss.
(This is only an example - FEEL also allow other operators in the names - like ./+-*).
The grammer is simplified something like this:
Expression -> Logical
| Name
Name -> %word (%whitespace %word):*
Logical -> Expression %and Expression
If I allow keywords in names, I will get two results. With the postprocessing I can check, if the name "Profit and loss" is in the context and accept or reject. But I have no idea how I can eliminate the logical result, when there is a valid name.
Any idea is welcome.
(The full grammar I'm using can be found in the package under lib/feel.grammar.ne)
I'm writing a interpreter for the FEEL expression language used in DMN (imicros-feel-interpreter). Everything is fine beside the problem with the foreseen ambiguity in the language. Unfortunately I have no idea, how to solve this problem with nearley.
FEEL allows names like
Profit and lossDependent on the scope they can be a name
Profit and lossor the logical expressionProfitandloss. (This is only an example - FEEL also allow other operators in the names - like./+-*).The grammer is simplified something like this:
If I allow keywords in names, I will get two results. With the postprocessing I can check, if the name "Profit and loss" is in the context and accept or reject. But I have no idea how I can eliminate the logical result, when there is a valid name.
Any idea is welcome.
(The full grammar I'm using can be found in the package under lib/feel.grammar.ne)