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<!doctype html>

<title>CodeMirror: APL 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="./apl.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>

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  <ul>
    <li><a href="../index.html">Language modes</a>
    <li><a class=active href="#">APL</a>
  </ul>
</div>

<article>
<h2>APL mode</h2>
<form><textarea id="code" name="code">
⍝ Conway's game of life

⍝ This example was inspired by the impressive demo at
⍝ http://www.youtube.com/watch?v=a9xAKttWgP4

⍝ Create a matrix:
⍝     0 1 1
⍝     1 1 0
⍝     0 1 0
creature ← (3 3 ⍴ ⍳ 9) ∈ 1 2 3 4 7   ⍝ Original creature from demo
creature ← (3 3 ⍴ ⍳ 9) ∈ 1 3 6 7 8   ⍝ Glider

⍝ Place the creature on a larger board, near the centre
board ← ¯1 ⊖ ¯2 ⌽ 5 7 ↑ creature

⍝ A function to move from one generation to the next
life ← {∨/ 1 ⍵ ∧ 3 4 = ⊂+/ +⌿ 1 0 ¯1 ∘.⊖ 1 0 ¯1 ⌽¨ ⊂⍵}

⍝ Compute n-th generation and format it as a
⍝ character matrix
gen ← {' #'[(life ⍣ ⍵) board]}

⍝ Show first three generations
(gen 1) (gen 2) (gen 3)
</textarea></form>

    <script>
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        lineNumbers: true,
        matchBrackets: true,
        mode: "text/apl"
      });
    </script>

    <p>Simple mode that tries to handle APL as well as it can.</p>
    <p>It attempts to label functions/operators based upon
    monadic/dyadic usage (but this is far from fully fleshed out).
    This means there are meaningful classnames so hover states can
    have popups etc.</p>

    <p><strong>MIME types defined:</strong> <code>text/apl</code> (APL code)</p>
  </article>