tinylex | A tiny lexical analyser generator
kandi X-RAY | tinylex Summary
kandi X-RAY | tinylex Summary
What is tinylex? A tiny lexical analyser generator. How to implement? I refer to Allen Holub's book 'Compiler design in C' and write it by myself.
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QUESTION
I am trying to do my own language with antlr4. I manged to create my own grammar and make my own Visitor which compiles my language.
Now, I am trying to build simple GUI interface for my language. However I am quite confused with idea how to do it, or if it is even possible. Here is the situation.
My language support easy function declarations. Lets say I have simple textarea on my html page which loads my code build parser and usual antlr stuff. After this i call visitor which run my code.
...ANSWER
Answered 2018-Apr-28 at 13:35Of course, this cant work cause visitor finished its job and it is no more keeping reference about anything so this.myFunctions doesnt exist anymore
That's not why this doesn't work. Functions can access objects from their surrounding scope and those objects will live as long as the function.
Your code doesn't work because onclick
will be called on the button, so this
will be the button, not your visitor. You can assign this
to a variable while it still refers to the visitor (i.e. outside the onclick
function) and then use that variable instead of this
:
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