1e9b330525
* Update CodeMirror to version 5.49.0 * Update CodeMirror versions in librejs and VERSIONS
86 lines
3.3 KiB
HTML
86 lines
3.3 KiB
HTML
<!doctype html>
|
|
|
|
<title>CodeMirror: Brainfuck mode</title>
|
|
<meta charset="utf-8"/>
|
|
<link rel=stylesheet href="../../doc/docs.css">
|
|
|
|
<link rel="stylesheet" href="../../lib/codemirror.css">
|
|
<script src="../../lib/codemirror.js"></script>
|
|
<script src="../../addon/edit/matchbrackets.js"></script>
|
|
<script src="./brainfuck.js"></script>
|
|
<style>
|
|
.CodeMirror { border: 2px inset #dee; }
|
|
</style>
|
|
<div id=nav>
|
|
<a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
|
|
|
|
<ul>
|
|
<li><a href="../../index.html">Home</a>
|
|
<li><a href="../../doc/manual.html">Manual</a>
|
|
<li><a href="https://github.com/codemirror/codemirror">Code</a>
|
|
</ul>
|
|
<ul>
|
|
<li><a href="../index.html">Language modes</a>
|
|
<li><a class=active href="#"></a>
|
|
</ul>
|
|
</div>
|
|
|
|
<article>
|
|
<h2>Brainfuck mode</h2>
|
|
<form><textarea id="code" name="code">
|
|
[ This program prints "Hello World!" and a newline to the screen, its
|
|
length is 106 active command characters [it is not the shortest.]
|
|
|
|
This loop is a "comment loop", it's a simple way of adding a comment
|
|
to a BF program such that you don't have to worry about any command
|
|
characters. Any ".", ",", "+", "-", "<" and ">" characters are simply
|
|
ignored, the "[" and "]" characters just have to be balanced.
|
|
]
|
|
+++++ +++ Set Cell #0 to 8
|
|
[
|
|
>++++ Add 4 to Cell #1; this will always set Cell #1 to 4
|
|
[ as the cell will be cleared by the loop
|
|
>++ Add 2 to Cell #2
|
|
>+++ Add 3 to Cell #3
|
|
>+++ Add 3 to Cell #4
|
|
>+ Add 1 to Cell #5
|
|
<<<<- Decrement the loop counter in Cell #1
|
|
] Loop till Cell #1 is zero; number of iterations is 4
|
|
>+ Add 1 to Cell #2
|
|
>+ Add 1 to Cell #3
|
|
>- Subtract 1 from Cell #4
|
|
>>+ Add 1 to Cell #6
|
|
[<] Move back to the first zero cell you find; this will
|
|
be Cell #1 which was cleared by the previous loop
|
|
<- Decrement the loop Counter in Cell #0
|
|
] Loop till Cell #0 is zero; number of iterations is 8
|
|
|
|
The result of this is:
|
|
Cell No : 0 1 2 3 4 5 6
|
|
Contents: 0 0 72 104 88 32 8
|
|
Pointer : ^
|
|
|
|
>>. Cell #2 has value 72 which is 'H'
|
|
>---. Subtract 3 from Cell #3 to get 101 which is 'e'
|
|
+++++++..+++. Likewise for 'llo' from Cell #3
|
|
>>. Cell #5 is 32 for the space
|
|
<-. Subtract 1 from Cell #4 for 87 to give a 'W'
|
|
<. Cell #3 was set to 'o' from the end of 'Hello'
|
|
+++.------.--------. Cell #3 for 'rl' and 'd'
|
|
>>+. Add 1 to Cell #5 gives us an exclamation point
|
|
>++. And finally a newline from Cell #6
|
|
</textarea></form>
|
|
|
|
<script>
|
|
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
|
|
lineNumbers: true,
|
|
matchBrackets: true,
|
|
mode: "text/x-brainfuck"
|
|
});
|
|
</script>
|
|
|
|
<p>A mode for Brainfuck</p>
|
|
|
|
<p><strong>MIME types defined:</strong> <code>text/x-brainfuck</code></p>
|
|
</article>
|