Home » Author Archives: Federico Tomassetti

Author Archives: Federico Tomassetti

Federico has a PhD in Polyglot Software Development. He is fascinated by all forms of software development with a focus on Model-Driven Development and Domain Specific Languages.

The ANTLR mega tutorial

Parsers are powerful tools, and using ANTLR you could write all sort of parsers usable from many different languages. In this complete tutorial we are going to: explain the basis: what a parser is, what it can be used for see how to setup ANTLR to be used from Javascript, Python, Java and C# discuss how to test your parser ...

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Why You Should Know the Language Server Protocol

The Language Server protocol is used between a tool (the client) and a language smartness provider (the server) to integrate features like auto complete, goto definition, find all references and alike into the tool. from Language Server Protocol In other words, it is a standard way to communicate between editor and language tools, like linters, style controls and, generally speaking, ...

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The Simple Way to Find the Correct Syntax

It happens to the best of us, you are writing some code in a Language that you use sporadically and you start asking yourself what is the correct syntax for this or that. You know many languages and you start wondering how do you iterate the elements of a collection? Is it foreach, for .. in or something else? You know the answer, ...

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Extracting JavaDoc documentation from source files using JavaParser

A lot of people are using JavaParser for the most different goals. One of these is extracting documentation. In this short post we will see how you can print all the JavaDoc comments associated to classes or interfaces. Code is available on GitHub: https://github.com/ftomassetti/javadoc-extractor Getting all the Javadoc comments for classes We are reusing DirExplorer, a supporting class presented in the introduction ...

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The important changes in the new ANTLR 4.6

After almost a year since the last major release, there is a new ANTLR version: 4.6. There are many news: new targets, better perfomance, better error handling and several improvements in the development of ANTLR itself. New targets The most impactful news is probably the new targets: C++, Go and Swift. Of course getting C++ support is a big deal. ...

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Observers for AST nodes in JavaParser

We are getting closer to the first Release Candidate for JavaParser 3.0. One of the last features we added was support for observing changes to all nodes of the Abstract Syntax Tree. While I wrote the code for this feature I received precious feedback from Danny van Bruggen (a.k.a. Matozoid) and Cruz Maximilien. So I use “we” to refer to ...

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