For the feature complete version 1, click here.

Toy v2.x

The Toy Programming Language is an imperative, bytecode-interpreted, embeddable scripting language. Rather than functioning independently, it serves as part of another program, the "host". This design allows for straightforward customization by both the host's developers and end users, achieved by exposing program logic through text files.

This repository holds the reference implementation for Toy version 2.x, written in C.

Nifty Features

• Simple C-like/JS-like syntax
• Intermediate AST representation
• Strong, but optional type system
• First-class functions
• Extensible with importable native code
• Can re-direct output, error and assert failure messages
• Open-Source under the Zlib license

Syntax

The following examples aren't fully functional yet, see timetable.

//fizzbuzz example
for (var counter: int = 1; counter <= 100; i++) {
	var result: string = "";

	if (counter % 3 == 0) {
		result = result .. "fizz";
	}

	if (counter % 5 == 0) {
		result = result .. "buzz";
	}

	if (result != "") {
		print result;
	}
	else {
		print counter;
	}
}

//find the nth fibonacci number
fn fib(n: int) {
	if (n < 2) return n;
	return fib(n-1) + fib(n-2);
}

for (var i = 1; i <= 10; i++) {
	print i.toString() .. ":" .. fib(i).toString();
}

//closures!
fn makeCounter() {
	var count = 0;

	fn next() {
		return ++count;
	}

	return next;
}

var tally = makeCounter();

print tally(); //1
print tally(); //2
print tally(); //3

Timetable

Here's a rough goal for the upcoming milestones, at which time I'll review and revise my projections. In terms of alpha/beta, the libraries mark the beginning of the beta stage.

Feature	Time Span	Review Date
Arrays & Tables	3 weeks	3rd Jan
Types	2 weeks	17th Jan
Slice Notation	2 weeks	31st Jan
Control Flow	1 month	28th Feb
Functions	1 month	28th March
External Libraries	-	-
Native Libraries	-	-

Building

Supported platforms are: linux-latest, windows-latest, macos-latest, using GitHub's standard runners.

To build the shared library, run make source.
To build the shared library and repl, run make repl.
To build and run the test suites, run make tests (make tests-gdb and make tests-valgrind options are also available).

Tools

Coming Soon - see #126 for details.

Documentation

Coming Soon - I want the features mostly set in stone first.

License

This source code is covered by the Zlib license (see LICENSE.md).

Contributors and Special Thanks

For a guide on how you can contribute, see CONTRIBUTING.md.

@8051Enthusiast - fixAlignment() trick
@hiperiondev - v1 Disassembler, v1 porting support and feedback
@add00 - v1 Library support
@gruelingpine185 - Unofficial v1 MacOS support
@solar-mist - v1 Minor bugfixes
Various Anons - Feedback
@munificent - For writing the book that sparked my interest in langdev

Patreon Supporters

• Seth A. Robinson