Toy/README.md

Toy 0.6.0

This is the Toy programming language interpreter, written in C.

Special thanks to http://craftinginterpreters.com/ for their fantastic book that set me on this path.

Nifty Features

• Simple C-like syntax
• Bytecode intermediate compilation
• Optional, but robust type system (including opaque for arbitrary data)
• Functions and types are first-class citizens
• import and export variables from the host program
• Fancy slice notation for strings, arrays and dictionaries
• Can re-direct output, error and assertion failure messages
• Open source under the zlib license

Building

For Windows, Linux and MacOS, simply run make in the root directory.

Note: For Linux, you may need to cd into the out directory before running.

Note: MacOS is not officially supported (no machines for testing), but we'll do our best!

Syntax

import standard; //for a bunch of utility functions


print "Hello world"; //"print" is a keyword

var msg = "foobar"; //declare a variable like this

assert true, "This message won't be seen"; //assert is another keyword

//-------------------------

fn makeCounter() { //declare a function like this
	var total: int = 0; //declare a variable with a type like this

	fn counter(): int { //declare a return type like this
		return ++total;
	}

	return counter; //closures are explicitly supported
}

var tally = makeCounter();

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

export tally; //export this variable to the host program

License

Copyright (c) 2020-2022 Kayne Ruse, KR Game Studios

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.