fera

fera is a general purpose procedural programming language that targets Brainfuck. With fera it is possible to write programs that would be extremely complicated if written by hand.

Syntax

The syntax of fera is inspired by C. A program in fera is made up of 4 parts. The first part is the data region, in the data region you declare global variables. The second part of a fera program are the inline blocks, inline blocks of code are routines that can be called from fera, but are pure brainfuck (along with some helper compiler directives). The third part of a fera program contains the proc blocks, proc's are procedures of fera code. Finally, the entry block is the entry point of your fera program.

Data types

At the moment the fera compiler only understands how to generate code for two data types: byte and byte[]. Byte is identical to one cell in a brainfuck machine. However, byte[] contains 4 extra bytes of header data which is necessary to support indexing arbitrary items in the array, so the total memory usage is n + 4 bytes where n is the lenght of the array.

Example

See the examples/ folder for more examples of the fera programming language.

Hello world

data {
    str: byte[14] = "Hello, world!";
}

inline _putsln {
    __org($0)
    >>>>
    [.>]
    ++++++++++
    .
    ----------
    <
    [<]
    <<<
    __ret($0)
}

entry {
    _putsln(str);
}

Usage

fera compiler

python3 -m compiler example.fra

bf formatter

python3 -m formatter example.bf