Skip to content

Commit

Permalink
Updated README.md syntax examples
Browse files Browse the repository at this point in the history
  • Loading branch information
Ratstail91 committed Dec 10, 2024
1 parent 5f75b5f commit 476a79b
Show file tree
Hide file tree
Showing 4 changed files with 89 additions and 35 deletions.
103 changes: 70 additions & 33 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -12,67 +12,104 @@ This repository holds the reference implementation for Toy version 2.x, written

# Nifty Features

* Simple C-like syntax
* Simple C-like/JS-like syntax
* Intermediate AST representation
* Strong, but optional type system
* First-class functions and types
* Extensible via external libraries
* Can re-direct output, error and assertion failure messages
* Open source under the zlib license
* 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](#timetable).

```toy
//print is a built-in keyword, that can handle complex expressions
print 6 * 7;
//fizzbuzz example
for (var counter: int = 1; counter <= 100; i++) {
var result: string = "";
//strings can be concatenated with the .. operator, and substringed with the [] operator
print "Hello" .. "world!"[3, 3]; //[index, length] - this prints "low"
if (counter % 3 == 0) {
result = result .. "fizz";
}
//variables are declared easily
var foobar = 42;
if (counter % 5 == 0) {
result = result .. "buzz";
}
//scopes allow for shadowing and rebinding
{
var foobar = foobar * 7;
if (result != "") {
print result;
}
else {
print counter;
}
}
```

//the types default to 'any' but can be specified if needed (same with constants)
var immutable: string const = "Foobar";
```toy
//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 .. ":" .. fib(i); //type coercion syntax isn't final
}
```

//the assert keyword can check an expression, and takes an optional second parameter
assert immutable == "Fizzbuzz", "This message is sent to the terminal by default";
```toy
//closures!
fn makeCounter() {
var count = 0;
//if and while works
var count = 1;
while (count <= 10) {
if (count % 2 == 0) {
print "even";
}
else {
print "odd";
fn next() {
return ++count;
}
count += 1;
return next;
}
//NOTE: This section will be expanded as more features are implemented
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](https://github.com/Ratstail91/Toy/issues/155) | 3 weeks | 3rd Jan |
Types | 2 weeks | 17th Jan |
Slice Notation | 2 weeks | 31st Jan |
[Control Flow](https://github.com/Ratstail91/Toy/issues/152) | 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](https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories).

To build the shared library, run `make source`.
To build the shared library and repl, run `make repl`.
To build and run the standard available tests, run `make tests`.
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](https://github.com/Ratstail91/Toy/discussions/126) for details.*
*Coming Soon - see [#126](https://github.com/Ratstail91/Toy/discussions/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](LICENSE.md)).
This source code is covered by the Zlib license (see [LICENSE.md](LICENSE.md)).

# Contributors and Special Thanks

Expand All @@ -83,8 +120,8 @@ For a guide on how you can contribute, see [CONTRIBUTING.md](CONTRIBUTING.md).
@add00 - v1 Library support
@gruelingpine185 - Unofficial v1 MacOS support
@solar-mist - v1 Minor bugfixes
The Ratbags - Feedback
@munificent - For [writing the book](http://craftinginterpreters.com/) that sparked my interest in langdev
Various Anons - Feedback
@munificent - For [writing the book](http://craftinginterpreters.com/) that sparked my interest in langdev

# Patreon Supporters

Expand Down
10 changes: 10 additions & 0 deletions scripts/fib.toy
Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
//example of the fibonacci sequence
fn fib(n: int) {
if (n < 2) return n;
return fib(n-1) + fib(n-2);
}

//NOTE: type coercion syntax hasn't been decided on yet
for (var i = 1; i <= 10; i++) {
print i .. ":" .. fib(i);
}
7 changes: 7 additions & 0 deletions scripts/leapyear.toy
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@

//find the leap years
fn isLeapYear(n: int) {
if (n % 400) return true;
if (n % 100) return false;
return n % 4 == 0;
}
4 changes: 2 additions & 2 deletions scripts/trailing.toy
Original file line number Diff line number Diff line change
Expand Up @@ -8,5 +8,5 @@ var b = [];

print b;

//deep
assert [[1, 2, 3],[4,99,6],[7,8,9]], "2-D array failed";

//TODO: prevent circular references

0 comments on commit 476a79b

Please sign in to comment.