https://www.gautamshetty.com This is my portfolio RSS feed https://www.gautamshetty.com/diary/masters-journey Reflections on my journey through the master's program—exploring personal growth, self-realization, and the challenges faced along the way. Fri, 15 Aug 2025 00:00:00 GMT By the Summer of 2025, I completed my program. It wasn’t just about the degree. It was about growth, patience, and self-realization. I owe a lot of this journey to my supervisor and my lab colleagues. Their constant support and motivation kept me going, especially when I doubted myself. For that, I will always be grateful. This chapter may be closing, but the lessons will stay with me as I move forward. ]]> https://www.gautamshetty.com/blog/tree-sitter-beginner-queries Learn how to implement and use Tree-sitter queries for syntax highlighting, code navigation, and static analysis. Wed, 06 Mar 2024 00:00:00 GMT In the realm of code editing and syntax highlighting, Tree-sitter{" "} stands out as a groundbreaking tool that offers a robust solution for understanding the structure of source code in various programming languages. It's a parser generator tool and an incremental parsing library that allows developers to maintain high performance and precise syntax highlighting, code formatting, and more. This post delves into the core aspect of Tree-sitter that makes these features possible: Tree-sitter queries. Have you not set up tree-sitter on your machine yet? Check this post - Tree-sitter 101. ## What are Tree-sitter Queries? Tree-sitter queries are a powerful mechanism for extracting information and patterns from the syntax tree generated by Tree-sitter. They allow developers to specify patterns in a language-agnostic way, enabling actions like syntax highlighting, code navigation, and other forms of static analysis across many programming languages with minimal effort. A Tree-sitter query consists of a series of patterns that match nodes in the syntax tree based on their type, content, and relationships to other nodes.
These queries can be written in a S-expression syntax, making them both readable and expressive. ## Why Use Tree-sitter Queries? - Syntax Highlighting: With queries, syntax highlighting can adapt to the structure of the code rather than just the text, providing a more accurate and visually helpful highlighting. - Code Navigation: Queries enable more sophisticated code navigation features, like jumping to definitions, finding references, and viewing documentation, by understanding the code's semantics. - Refactoring Tools: They can be used to build refactoring tools that operate with an understanding of the code's syntax and semantics, making automated changes safer and more reliable. - Static Analysis: Tree-sitter queries allow for detailed static analysis by querying the code for patterns that might indicate bugs or code smells. ## Writing Your First Tree-sitter Query To get started with Tree-sitter queries, you first need to have Tree-sitter installed and set up for your target language. Once you have a parsed syntax tree, you can begin writing queries. Here's a simple example to highlight function definitions in a JavaScript file: ```scheme ; Match function declarations ((function_declaration name: (identifier) @function.name) (highlight @function.name "function.name")) ; Match variable declarations that are initialized with a function ((variable_declaration declarators: (variable_declarator value: (function) @function.name)) (highlight @function.name "function.name")) ``` This query has two patterns: one for matching named function declarations and another for matching variables that are initialized with a function. The `@function.name` part is a capture name, which is used to refer to the matched nodes in the actions that follow (in this case, highlighting with the tag "`function.name`"). ]]> https://www.gautamshetty.com/diary/affection-in-the-deceptive-world Love is a bliss, but can be cruel in this world Wed, 28 Feb 2024 00:00:00 GMT In a world so wide and full of deceit,
Love's a bliss, yet cruel, bittersweet.
Affection blooms in a deceptive land,
Where hearts entwine, like shifting sand.
In the gentle dawn of love's embrace,
Hope emerges, painting a tender grace.
But shadows lurk, with tricks untold,
A dance of illusions, love's story unfolds.
Through whispers sweet and promises bright,
Hearts take flight, chasing the elusive light.
Yet, in the maze of a world unkind,
Love's bliss, at times, is hard to find.
Deceptive faces wear affection's guise,
Yet behind the mask, truth often lies.
In this complex world of fleeting dreams,
Love's tender glow may not be as it seems.
But still, we seek love's warm embrace,
Braving storms, finding solace in the chase.
For in a world that's both cruel and kind,
Love remains a bliss we hope to find.

~ Gautam ]]> https://www.gautamshetty.com/diary/self-realization A journey towards self-realization Fri, 26 Jan 2024 00:00:00 GMT > Painting: Light of Hope by Abraham Hunter typing ... ⚠ Check back later! ]]> https://www.gautamshetty.com/blog/tree-sitter-101 Discover the basics of Tree-sitter, a powerful parsing framework, and learn how to install and use it for program analysis across various programming languages. Sat, 16 Dec 2023 00:00:00 GMT 'pacman': ```bash sudo pacman -S tree-sitter tree-sitter --version ``` Similarly, on macOS, you can use Homebrew: ```bash brew install tree-sitter tree-sitter --version ``` ### Precompiled Binary If your platform doesn't have Tree-sitter in its package manager or the available version is outdated, you can download a precompiled binary from the Tree-sitter releases page on GitHub. Here's how you can do it: ```bash curl -OL https://github.com/tree-sitter/tree-sitter/releases/download/v0.20.8/tree-sitter-linux-x64.gz mkdir -p $HOME/bin gunzip tree-sitter-linux-x64.gz > $HOME/bin/tree-sitter chmod u+x $HOME/bin/tree-sitter export PATH=$HOME/bin:$PATH tree-sitter --version ``` > **Note:** The provided release version may be obsolete at the time you are reading this, get the latest from here: -> [Tree-sitter releases](https://github.com/tree-sitter/tree-sitter/releases) ### NPM Package If you prefer using NPM, you can install the Tree-sitter command-line program via the 'tree-sitter-cli' package: ```bash npm install tree-sitter-cli npx tree-sitter --version ``` This option is particularly useful when you're working on grammar development as it allows you to include Tree-sitter as part of a CI build. ## Installing a Grammar Now that you have the Tree-sitter program installed, it's time to set up a grammar. By default, Tree-sitter doesn't install any language grammars because it doesn't know which languages you want to work with. Let's install the Tree-sitter Python grammar as an example. First, you need to generate a configuration file for Tree-sitter. This file tells Tree-sitter where to find language grammars. Run the following command to generate the configuration file: ```bash tree-sitter init-config ``` This will create a configuration file at ~/.tree-sitter/config.json. Open this file in your text editor. In the file, you'll find a parser-directories section: ```json { "parser-directories": [ "/home/dcreager/github", "/home/dcreager/src", "/home/dcreager/source" ] } ``` You can choose any directories you like to store your grammar definitions. Tree-sitter will look for subdirectories in these locations with names matching the pattern tree-sitter-[language], and it will automatically generate and compile those grammars when needed. To work with the Tree-sitter Python grammar, clone it into one of the directories listed in the config file. In this example, we'll use ~/src: ```bash mkdir -p ~/src cd ~/src git clone https://github.com/tree-sitter/tree-sitter-python ``` ## Parsing Some Code With the Python grammar installed, you can now parse Python code using the Tree-sitter command-line tool. Let's test it on an example Python script: ```bash cat example.py import utils def add_four(x): return x + 4 print(add_four(5)) tree-sitter parse example.py ``` You should see a parse tree generated for the Python code. Tree-sitter breaks down the code into a structured tree, making it easier for you to analyze and manipulate the code's syntax. Feel free to explore further by parsing example files from other languages. Just clone the corresponding language grammar into the same directory you specified in the configuration file and use the tree-sitter parse command to analyze the code. That's it for our beginner's guide to Tree-sitter. In the next posts of this series, we'll delve deeper into using Tree-sitter for various programming language analysis tasks. So, stay tuned for more exciting Tree-sitter adventures! ]]>