[antlr-interest] assign a value to a token
marinos at studyhood.com
Wed Jul 18 06:08:46 PDT 2012
I would like to assign the value of a token to a variable, so as I will be able to use that variable through my grammar (I am sorry if I don't use the right terminology).
For example, I have the following rules (I am quoting part of them for simplification):
:'UseCase:' ucName '='
: 'create' | 'alter' | 'read'
: ARTICLE NOUN
:'Description' ':' ucName ......
:io 'is 'at' state 'state' '.' 'Triggered' 'by' 'UseCase' ':' ucName
A test syntax can go like this:
UseCase: create Prescription =
Description: create Prescription
Examination is at ....... Triggered by UseCase: Create Examination
In this example, ucName is assigned the values 'create Prescription' for line 1 and 2, and the value 'Create Examination' for line 3. However, someone can write something else, e.g. 'read Book' for line 2. And I don't want it to be like this. I want the ucName of the rule 'description' to be the same with the ucName of the rule useCaseSpecificaton. And I want the ucName of the rule statePre to be different from the others.
From what I read , there must be a way with the use of Java code, but I haven't managed to make it work. I would really appreciate if someone could help me.
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