Bigbrain

High-level programming language that can be compiled to Brainfuck.

Online Demo

Usage

$ git clone git@github.com:dqn/bigbrain.git
$ cd bigbrain
$ yarn
$ yarn bigbrain ./example.bigbrain

Example

x = input();

for (i = 1; i <= x; ++i) {
  if (i % 3 == 0 && i % 5 == 0) {
    putchar(102);
    putchar(105);
    putchar(122);
    putchar(122);
    putchar(98);
    putchar(117);
    putchar(122);
    putchar(122);
    // => fizzbuzz
  } else if (i % 3 == 0) {
    putchar(102);
    putchar(105);
    putchar(122);
    putchar(122);
    // => fizz
  } else if (i % 5 == 0) {
    putchar(98);
    putchar(117);
    putchar(122);
    putchar(122);
    // => buzz
  } else {
    print(i);
    // => (raw number)
  }
  putchar(10);
  // => \n
}

Output:

>>,<<[-]>>[<<+>>>+<-]>[-]+<<[-]>>[<<+>+>-]<[-]<[>+>+<<-]>>[<<+>>-]<<<[>>>+>+<<<<-]>>>>[<<<<+>>>>-]<[-<[>>+>+<<<-]>>>[<<<+>>>-]+<[<<->>>-<[-]]>[<<[-]>>-]<<]+<[>-<[-]]>[<<[>+>>+<<<-]>>>[<<<+>>>-]+++<<[>>->+<[>>+>+<<<-]>>>[<<<+>>>-]+<[>-<[-]]>[<<[<+>-]>>-]<<<<<-]>>[-]>[<<<->>>-]+<<<[>>>-<<<[-]]<[>+>>+<<<-]>>>[<<<+>>>-]+++++<<[>>->>+<<[>>>+>+<<<<-]>>>>[<<<<+>>>>-]+<[>-<[-]]>[<<[<<+>>-]>>-]<<<<<<-]>>[-]>>[<<<<->>>>-]+<<<<[>>>>-<<<<[-]]>>>[<<<+>>>[-]]>[<<<<+>>>>[-]]++<<<<[>>>>-<<<<-]+>>>>[<<<<->>>>[-]]<+<<<[>>>>>++++++++++[<<<++++++++++>>>-]<<<++.[-]>>>+++++++[<<<+++++++++++++++>>>-]<<<.[-]>>>+++++++++++[<<<+++++++++++>>>-]<<<+.[-]>>>+++++++++++[<<<+++++++++++>>>-]<<<+.[-]>>>+++++++[<<<++++++++++++++>>>-]<<<.[-]>>>+++++++++[<<<+++++++++++++>>>-]<<<.[-]>>>+++++++++++[<<<+++++++++++>>>-]<<<+.[-]>>>+++++++++++[<<<+++++++++++>>>-]<<<+.[-]>-<<<[-]]>>>[<<<<[>+>>+<<<-]>>>[<<<+>>>-]+++<<[>>->>>+<<<[>>>>+>+<<<<<-]>>>>>[<<<<<+>>>>>-]+<[>-<[-]]>[<<[<<<+>>>-]>>-]<<<<<<<-]>>[-]>>>[<<<<<->>>>>-]+<<<<<[>>>>>-<<<<<[-]]+>>>>>[>>++++++++++[<++++++++++>-]<++.[-]>+++++++[<+++++++++++++++>-]<.[-]>+++++++++++[<+++++++++++>-]<+.[-]>+++++++++++[<+++++++++++>-]<+.[-]<<<<<<->>>>>[-]]<<<<<[<[>>>>>>+>+<<<<<<<-]>>>>>>>[<<<<<<<+>>>>>>>-]+++++<[>->+<[>>+>+<<<-]>>>[<<<+>>>-]+<[>-<[-]]>[<<[<+>-]>>-]<<<<-]>[-]>[<<->>-]+<<[>>-<<[-]]+>>[>>+++++++[<++++++++++++++>-]<.[-]>+++++++++[<+++++++++++++>-]<.[-]>+++++++++++[<+++++++++++>-]<+.[-]>+++++++++++[<+++++++++++>-]<+.[-]<<<->>[-]]<<[<<<<<<[>>>>>>>>+>+<<<<<<<<<-]>>>>>>>>>[<<<<<<<<<+>>>>>>>>>-]++++++++++<[->->+<[>>+>+<<<-]>>>[<<<+>>>-]+<[>-<[-]]>[<<[<+>-]>>>+<-]<<<<]>>[>>>>>+<<<<<-]>>>[<<<<<+>>>>>-]<<<<[-]++++++++++<[->->+<[>>+>+<<<-]>>>[<<<+>>>-]+<[>-<[-]]>[<<[<+>-]>>>+<-]<<<<]>>[>>>>+<<<<-]>>>[++++++++++++++++++++++++++++++++++++++++++++++++.<+>>+<[-]]>[<<[>>-<<-]>>++++++++++++++++++++++++++++++++++++++++++++++++.[-]]>++++++++++++++++++++++++++++++++++++++++++++++++.[-]<<<<<<[-]<<<-]>[<<<<+>>>>-]<<<<<<-]>>[>>+<<-]>-]>[-]++++++++++.[-]<<<<<+[>>>>>+<+<<<<-]>>>>[<<<<+>>>>-]>[-]<<<[-]<<[>>>>>+<+<<<<-]>>>>[<<<<+>>>>-]<<<<<[>>>>>+<+<<<<-]>>>>[<<<<+>>>>-]>[->[<<+<<+>>>>-]<<<<[>>>>+<<<<-]+>>[>>-<<<<->>[-]]<<[>>>[-]<<<-]>>>]+>[<->[-]]<[<<+>>-]<<]

Syntax

Variable

foo = 10;
bar = 20;

input

As in brainfuck: ,.

x = input();

putchar

As in brainfuck: ..

putchar(65); // => A

print

Print value as decimal.

print(65); // => 65

Block

Block is an expression.

y = {
  print(10);
  putchar(65);
  20 + 15 + 7;
};

print(y); // => 42

if

if is an expression.

x = 20;

if (x > 10) {
  print(65);
}

if (x > 10) {
  print(65);
} else {
  print(66);
}

if (x > 10) {
  print(65);
} else if (x < 10) {
  print(66);
} else {
  print(67);
}

y = if (x > 10) {
  1;
} else {
  2;
};

print(y); // => 1

for

for (i = 0; i < 10; i++) {
  print(i % 3);
}

Operators

print(1 + 2); // => 3
print(4 - 1); // => 3
print(1 + +1); // => 2
print(1 + -1); // => 0
print(2 * 4); // => 8
print(13 / 3); // => 4
print(13 % 3); // => 1
print(2 ** 3); // => 8
print(2 * (3 + 4)); // => 14
print(!0); // => 1
print(1 == 2); // => 0
print(1 != 2); // => 1
print(1 < 2); // => 1
print(1 > 2); // => 0
print(1 <= 1); // => 1
print(1 >= 1); // => 1
print(1 && 0); // => 0
print(1 || 0); // => 1

x = 5;
print(++x); // => 6
print(x++); // => 6
print(x--); // => 7
print(--x); // => 5

License

MIT