Factor is a modern concatenative programming language with FORTH-like syntax and a rich standard library.

http://factorcode.org

#forth #plt #programming #retro #compiler

ZZ is a new C dialect with Rusty syntax and ability for formal verification through symbolic execution at compile time.

https://github.com/zetzit/zz

#c #rust #compiler #transpiler #system #programming

Selfie is an educational project consisting of a compiler for a subset of C that generates code for a simplified RISC-V instruction set, a small emulator for that architecture, and a tiny hypervisor.

Selfie can compile and execute itself.

There are various extensions for Selfie that include a simple garbage collector and a symbolic executor.

http://selfie.cs.uni-salzburg.at/

#c #riscv #system #programming #lowlevel #compiler #osdev #hv #virt

Stoneknife Forth is a minimal forth translator that can compile itself. This compiler is so simple that it recognizes only one-letter identifiers.

This can be bootstrapped in two steps:

First of all Stoneknife is compiled by itself being interpreted by a slow interpreter written in python.

The second step is compiling with the compiler produced by the previous step. The result is a bootstrapped x86 ELF executable.

https://github.com/kragen/stoneknifeforth

#compiler #lowlevel #system #programming

I have already written about Rui Ueyama and the family of small C compilers: 8cc and 9cc. I also mentioned chibicc, a project that complements Rui's book.

Last time I didn't notice how the author organized the repository of chibicc. Each commit is a single step from zero to a full-featured C11 compiler (without optimizations and proper allocation of registers).

The first commit in the repository only involves a simple compiler that reads a number and generates a program that can return this number on completion. The last commit includes all the source code of the compiler that can build real projects like Git, SQLite and libpng!

https://github.com/rui314/chibicc

#c #compiler #lowlevel #system #programming

Cowgol is a simple programming language inspired by Ada. The language has been greatly simplified to enable easy but effective compilation for small platforms like Zilog Z80, Intel 8080, MOS 6502, Motorola 68K, and others.

The Cowgol compiler is bootstrapped and written in Cowgol itself. It uses a simple table-driven code generator but performs several optimizations. The code of the compiler is very accurate and pleasant to read.

https://github.com/davidgiven/cowgol

#plt #compiler #system #programming

I've always been attracted to minimalistic programming languages. Among them were Scheme, TCL, Rebol, Smalltalk and of course Forth. I didn’t write big programs on these languages, but each of them taught me something. Unfortunately, many of them have remained niche and are not widely used in business. Well, okay, the main thing is that programming in these languages makes us a little happier, right? Today I propose to take a look at a modern programming language that develops ideas of Forth.

Retro is a minimalistic modern Forth-like language with a miniature virtual machine implemented in a variety of programming languages. Despite its minimalism, it remains a pragmatic language that allows you to solve real problems.

Just in case, let me remind that I have already written about other Forth-like modern languages, for example, about Factor (1, 2).

#forth #minimalism #plt #programming #retro