nulang/playground/index.html at next-phase · ghzhost/nulang · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Nulang Playground</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/theme/material-darker.min.css">
<style>
  * { box-sizing: border-box; margin: 0; padding: 0; }
  body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #1a1a2e; color: #e0e0e0; display: flex; flex-direction: column; height: 100vh; }
  header { background: #16213e; padding: 12px 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid #0f3460; }
  header h1 { font-size: 20px; color: #e94560; margin-right: auto; }
  header select, header button { padding: 6px 12px; border-radius: 4px; border: 1px solid #0f3460; background: #0f3460; color: #e0e0e0; cursor: pointer; font-size: 13px; }
  header button:hover { background: #1a4a8a; }
  header button.run { background: #e94560; border-color: #e94560; font-weight: bold; }
  header button.run:hover { background: #ff6b81; }
  main { display: flex; flex: 1; overflow: hidden; }
  #editor { flex: 1; height: 100%; }
  #output { width: 380px; background: #0d1117; border-left: 1px solid #0f3460; padding: 16px; overflow-y: auto; font-family: 'Fira Code', 'Cascadia Code', monospace; font-size: 13px; white-space: pre-wrap; word-break: break-all; }
  #output .out { color: #c9d1d9; }
  #output .err { color: #f85149; }
  #output .info { color: #58a6ff; }
  #output .empty { color: #484f58; font-style: italic; }
  .CodeMirror { height: 100% !important; font-size: 14px; }
  #status { font-size: 12px; color: #58a6ff; padding: 0 8px; }
  .cm-s-material-darker .cm-keyword { color: #c792ea; }
  .cm-s-material-darker .cm-string { color: #c3e88d; }
  .cm-s-material-darker .cm-number { color: #f78c6c; }
  .cm-s-material-darker .cm-comment { color: #546e7a; }
  .cm-s-material-darker .cm-builtin { color: #82aaff; }
</style>
</head>
<body>
<header>
  <h1>Nulang Playground</h1>
  <select id="examples">
    <option value="">— Examples —</option>
    <option value="perform IO.print(&quot;Hello, Nulang!&quot;)">Hello World</option>
    <option value="let fib = fn(n) { if n &lt;= 1 then n else fib(n - 1) + fib(n - 2) } in fib(10)">Fibonacci</option>
    <option value="type Option[T] = Some(T) | None&#10;let x = Some(42) in match x with { | Some(n) =&gt; n | None =&gt; 0 }">Option Match</option>
    <option value="let add = fn(x, y) { x + y } in 5 |&gt; add(3)">Pipe Operator</option>
    <option value="perform String.length(&quot;hello&quot;)">String Length</option>
    <option value="perform String.concat(&quot;Hello&quot;, &quot; World&quot;)">String Concat</option>
    <option value="perform Debug.inspect(&quot;x&quot;, 42 * 2)">Debug Inspect</option>
    <option value="match 42 { case 1 =&gt; 10 case 42 =&gt; 100 case _ =&gt; 0 }">Match Expression</option>
    <option value="let inc = fn(n) { n + 1 } in inc(41)">Closure</option>
    <option value="perform IO.log(&quot;info&quot;, &quot;server started&quot;)">IO.log</option>
  </select>
  <button class="run" onclick="run()">▶ Run (Ctrl+Enter)</button>
  <button onclick="share()">🔗 Share</button>
  <span id="status"></span>
</header>
<main>
  <div id="editor"></div>
  <div id="output"><span class="empty">Output appears here — click ▶ Run</span></div>
</main>

<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/mode/clike/clike.min.js"></script>
<script>
// Nulang syntax mode for CodeMirror
CodeMirror.defineSimpleMode('nulang', {
  start: [
    { regex: /\/\/.*/, token: 'comment' },
    { regex: /"(?:[^\\]|\\.)*?"/, token: 'string' },
    { regex: /\b(fn|let|rec|in|if|then|else|match|with|case|handle|resume|perform|spawn|send|ask|actor|behavior|state|type|effect|workflow|import|module|pub|self|unit|nil|true|false|and|or|receive|after)\b/, token: 'keyword' },
    { regex: /\b(Int|Float|Bool|String|Unit|Nil|Actor|Option|Result|Some|None|Ok|Error|IO|Debug|Timer|Signal|Inference|LLM|Otp)\b/, token: 'builtin' },
    { regex: /0[xX][0-9a-fA-F]+/, token: 'number' },
    { regex: /[0-9]+\.[0-9]+/, token: 'number' },
    { regex: /[0-9]+/, token: 'number' },
    { regex: /[+\-*\/%<>=!|&^]+|->|=>|\|>/, token: 'operator' },
    { regex: /[a-zA-Z_][a-zA-Z0-9_]*/, token: 'variable' },
  ]
});

const editor = CodeMirror(document.getElementById('editor'), {
  value: 'perform IO.print("Hello, Nulang!")',
  mode: 'nulang',
  theme: 'material-darker',
  lineNumbers: true,
  indentUnit: 4,
  tabSize: 4,
  matchBrackets: true,
  autoCloseBrackets: true,
});

// Load from URL hash
if (location.hash) {
  try {
    const code = decodeURIComponent(location.hash.slice(1));
    if (code) editor.setValue(code);
  } catch(e) {}
}

// Example dropdown
document.getElementById('examples').addEventListener('change', function() {
  if (this.value) editor.setValue(this.value);
});

// Ctrl+Enter to run
editor.addKeyMap({ 'Ctrl-Enter': run });

async function run() {
  const code = editor.getValue();
  const out = document.getElementById('output');
  const status = document.getElementById('status');
  out.innerHTML = '<span class="info">Running...</span>';
  status.textContent = 'running...';

  try {
    const resp = await fetch('/run', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ code }),
    });
    const data = await resp.json();
    let html = '';
    if (data.stdout) html += '<span class="out">' + escapeHtml(data.stdout) + '</span>';
    if (data.stderr) html += '<span class="err">' + escapeHtml(data.stderr) + '</span>';
    if (!data.stdout && !data.stderr) html = '<span class="empty">(no output)</span>';
    out.innerHTML = html;
    status.textContent = data.ok ? 'ok' : 'error';
    status.style.color = data.ok ? '#3fb950' : '#f85149';
  } catch(e) {
    out.innerHTML = '<span class="err">Connection error: ' + escapeHtml(e.message) + '</span>';
    status.textContent = 'offline';
    status.style.color = '#f85149';
  }
}

function share() {
  const code = editor.getValue();
  const url = location.origin + location.pathname + '#' + encodeURIComponent(code);
  navigator.clipboard.writeText(url).then(() => {
    document.getElementById('status').textContent = 'URL copied!';
  });
}

function escapeHtml(s) { return s.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;'); }
</script>
</body>
</html>