') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ', 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); })(); GitHub - oridb/mc: Myrddin Compiler · GitHub
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Myrddin

Myrddin Website and Documentation

Myrddin is a systems language that is both powerful and fun to use. It aims for C like low level control, a lightweight high quality implementation, and features you may find familiar from languages like like rust and ocaml.

This combination makes Myrddin suitable for anything ranging from desktop applications, to embedded systems and potentially even kernel development.

Build

If you are building from development then issue make bootstrap after the call to ./configure.

  • ./configure
  • make
  • make install

The result will be, among other things, the binaries 6m and mbld.

Usage

Compile and execute: mbld -R test.myr

Compile into a binary: mbld -b binary test.myr

Examples

A classic:

use std
const main = {
for var i = 0; i < 1000; i++
/* pattern match on a tuple */
match (i % 3, i % 5)
| (0, 0): std.put("fizzbuzz\n")
| (0, _): std.put("fizz\n")
| (_, 0): std.put("buzz\n")
| _:
;;
;;
}

How about regex, destructuring and algebraic data types?

use regex
use std
const main = {
var re, str
str = "match against this!"
match regex.compile(".*")
| `std.Ok r:	re = r
| `std.Err m:	std.fatal("couldn't compile regex: {}\n", m)
;;
match regex.exec(re, str)
| `std.Some _: std.put("regex matched\n")
| `std.None:	std.fatal("regex did not match\n")
;;
regex.free(re)
}

More examples and a complete feature list can be found on the website.

Status

Solid Engineering

Try It Online

The online playground is a good place to get started with little setup.

Online Playground Environment

API Documentation

Myrddin ships with standard library which covers many common uses. It is becoming more useful every day.

API Reference

Mailing List

Annoucements of major changes, questions, complaints. We also give relationship advice.

Mailing List Archives

Subscribe Here

Supported Platforms

Myrddin currently runs on a number of platforms

  • FreeBSD
  • Linux
  • NetBSD
  • OSX
  • OpenBSD
  • Plan9front

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