Demo of the LoGic Compiler

by terabithera 10 years ago

GNU/Linux ◆ rxvt-unicode-256color ◆ zsh 375 views

The LoGic Compiler (lgc) is a compiler for a small language I designed that evaluates logical expressions. Each logical expression is given as a .lgc file, the compiler will output a binary that once ran will draw the truth table of the given logical expression.

The reserved keywords are

NOT
AND
OR
NOR
NAND
XOR

All identifiers are made of lowercase and uppercase characters. The ( and ) are used to define blocks and higher precedence. The two logical conditionals -> and => are equivalent and mean implication and <-> and <=> are equivalent and mean equivalence.

For example given the program NOT(p) OR q <=> (p -> q) the program will output

q p Output 0 0 1 0 1 1 1 0 1 1 1 1

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You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 9048.cast

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/9048.cast',
      document.getElementById('player'),
      { cols: 114, rows: 36 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/9048 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.