The black hole…
In the last part of this tutorial we prepared the parser for a simple BNF syntax. In this part we will create a simple C tool that converts this parser syntax into tree-sitter JavaScript syntax. After installing the library, as specified above or compiling from the source code, get into the folder we created in […]
As seen in previous posts, I’ve been using AntLR for my parsers. Nevertheless, I’ve been listening to discussions about the speed of Tree-Sitter parsers, and I decided to give it a try. While I learn how to use them, I will write a brief tutorial on the subject. Bear with me if you find any […]
For years, my preferred approach for processing XML documents has been using a down-translator processor: a set of methods that start processing the DOM from the leaves and compute values that are propagated to their parents, and so on, until it reaches the tree root node. If this seems strange, probably it will get better […]
Yesterday I was trying to automate a process using a Makefile. At first, I was mostly using Bash inside the Makefile to iterate over a lot of files and perform operations. Unfortunately, that approach does not allow us to use multiple parallel jobs, taking advantage of the multi-processor available in the machine. I decided to […]
I must say I am a Rider addict. Or, to be fair, a JetBrains IDE addict. I am still expecting the Dromedary IDE for Perl. Jokes aside, I use Rider and PyCharm often. They are my default IDE for C# and Python. I also love to use the code refactoring suggestions. Not just because they […]
Everything comes to an end, and this will be the last part of this tutorial. Or at least, the last planned part of this tutorial. In this part, we will implement the support to functions. But, before we start, I need to correct a mistake in part IV of this tutorial, when the SVG output […]
For this issue, I do not bring a lot of news. With Christmas and other requests, I had little time to continue this tutorial. But, having someone to test the previous issues of this tutorial (thanks, Vicente), we found out that the custom Build Task developed in the first parts of this tutorial has problems […]
Is this tutorial ever ending? Who knows. But while I am motivated for it, I will continue. I already have some ideas for future parts, so I can’t see this finishing before the ten or twelve issues. To start with, the news since the last part. I added documentation to the repository as well as […]
Things are getting exciting. I will introduce control statements in this part of the ANTLR tutorial, like repetitions and conditionals. For that, we will need to do a small walk, visiting the comparison and boolean operators. Then, we will be able to implement the control operators and, in the end, test everything. Comparisons LOGO does […]
Welcome back to my ANTLR tutorial. This part will be focused on the support of variables in LOGO. We will work on the assignment of values to variables and variables evaluation. We will also take the opportunity to split the grammar file into two: the lexer and the grammar parts. The previous parts of this […]
