Brio Lang is an interpreted, general purpose, object-oriented programming language. Brio Lang is portable and runs on many Unix varients including Linux and macOS, as well as Windows Subsystem for Linux.

Quick Start

Read the download and usage guide available at https://www.brio-lang.org.

Build the Interpreter

First, install the dependencies:

$ apt-get -y install make g++ libcurl4-openssl-dev libfcgi-dev

Next, build the project:

$ make all

Run the Interpreter

Running Brio Lang without any arguments, or with -i, will start the interactive read-eval-print loop.

$ ./bin/brio -i

The Brio Lang REPL can also be launched using Docker.

$ docker build . -t brio-lang:0.6.0
$ docker run -it brio-lang:0.6.0

To execute a Brio Lang program, simply provide the path to your program as an argument.

$ ./bin/brio ./path/to/code.brio

You may use the --help argument to see a full list of supported arguments.

$ ./bin/brio --help

usage: ./brio [-h] [-v] [-i] [-t] [-gv] [-sym] [-ast] [-fcgi] FILE.brio

optional arguments:
  -h, --help                  Prints the help information
  -v, --version               Prints the version
  -i                          Runs in interactive mode (read-eval-print loop)
  -t                          Prints the tokens from the lexer
  -gv                         Outputs a DOT file for visualizing the AST
  -sym                        Prints the symbol table globals 
  -ast                        Prints each node type in the AST
  -fcgi                       Starts FastCGI listener, must be called from spawn-fcgi

Code Examples

Hello World

method main(){
    print("Hello world ✋")
}

$ brio app.brio
Hello world ✋

Fibonacci Series

# Fibonacci series up to n
method fib(n){
    let a = 0
    let b = 1
    while (a < n){
        print(a, ',')
        let c = a + b
        a = b
        b = c
    }
}

method main(){
    fib(1000)
}

$ brio app.brio
0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987

Iterate Over Values

method main(){
    let numbers = range(5)  # [0, 1, 2, 3, 4]
    let sum = 0

    each (let n : numbers){
        sum += n
    }

    print(sum)
}

$ brio app.brio
10

You can iterate over strings, arrays, dictionaries, as well as user-defined objects.

method main(){
    let airports = {
        "SFO": {"id": 1, "city": "San Francisco"},
        "FRA": {"id": 2, "city": "Frankfurt"},
        "YOW": {"id": 3, "city": "Ottawa"},
    }

    each (let key : airports){
        print(airports[key]["city"])
    }
}

$ brio app.brio
San Francisco
Frankfurt
Ottawa

Visual Studio Code

There is an extension available for VS Code that provides language support including syntax highlighting, and the ability to define a Brio interpreter and execute your code.

• Download Brio for Visual Studio Code (or view on GitHub)

License

Brio Lang is copyrighted free software, licensed under the Modified BSD License.

See LICENSE and COPYRIGHT for details.