https://github.com/tatskaari/gustolang

A toy language written in kotlin
https://github.com/tatskaari/gustolang

functional-languages grammar gusto kotlin toy-language

Last synced: 4 months ago
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A toy language written in kotlin

• Host: GitHub
• URL: https://github.com/tatskaari/gustolang
• Owner: Tatskaari
• Created: 2017-08-10T19:58:35.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2019-03-17T17:57:21.000Z (over 7 years ago)
• Last Synced: 2025-04-14T08:21:36.265Z (about 1 year ago)
• Topics: functional-languages, grammar, gusto, kotlin, toy-language
• Language: JavaScript
• Size: 1.3 MB
• Stars: 16
• Watchers: 2
• Forks: 1
• Open Issues: 4
• Metadata Files:
  • Readme: README.md

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README

          
# GustoLang 

[![Build Status](https://travis-ci.org/Tatskaari/GustoLang.svg?branch=master)](https://travis-ci.org/Tatskaari/GustoLang)

[![codecov](https://codecov.io/gh/Tatskaari/GustoLang/branch/master/graph/badge.svg)](https://codecov.io/gh/Tatskaari/GustoLang)

A toy language written in kotlin. The original idea was to make a language that was simple to pick up for beginners

however I have just been implementing features for fun. The plan right now is to get this targeting the JVM.

Another goal of this project is to try out a few idioms. You may have noticed the build passing tag. Every commit to 

this project is run through Travis CI and passed through a suite of unit tests. I also just wanted to learn Kotlin.

# Road Map

- Desired syntax and semantics

  - Code blocks - Done

  - Variables and assignment - Done

  - Expressions - Done

  - If statements - Done

  - While loops - Done

  - Input and output - Done

  - Function calls - Done

  - Variable types (decimal, character?) - Done

  - Lists - Done

  - Foreach over lists

  - List API to find size, remove first, append lists together etc.

    - Length - Done

    - First

    - Last

    - Remove

    - Append

  - Make lists indexed by strings and other variables as well

  - Allow functions to return nothing. Detect all code paths return the same value. - Started (naive implementation)

  - Static type checking - Done

  - Anonymous functions - Done

- Interpretation

    - jar command line interpreter - Done

    - Javascript interpreter - Done

- Compilation

    - JVM

- Features to consider

  - Target LLVM IR (and as a result all the platforms LLVM targets)

    - Figure out how to work with LLVM garbage collectors

  - Dead variable analysis

  - Unreachable code analysis

  - Constant propagation and expression simplifications

  - Function inlining

# Syntax/Grammar 

The syntax changes every time I have a cool idea. I keep a formal definition in the file "grammar" however I forget to 

update this sometimes. I usually keep a working example on [my website](http://jon-poole.uk/try-gusto).