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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Squint</title>
<meta content="width=device-width, initial-scale=1" name="viewport" />
<meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
<meta content="utf-8" http-equiv="encoding" />
<script async src="https://ga.jspm.io/npm:es-module-shims@1.8.2/dist/es-module-shims.js"
crossorigin="anonymous"></script>
<script type="importmap">
{
"imports": {
"squint-cljs": "https://unpkg.com/squint-cljs@0.6.88/index.js",
"squint-cljs/core.js": "https://unpkg.com/squint-cljs@0.6.88/core.js",
"squint-cljs/string.js": "https://unpkg.com/squint-cljs@0.6.88/string.js",
"squint-cljs/src/squint/string.js": "https://unpkg.com/squint-cljs@0.6.88/src/squint/string.js",
"squint-cljs/src/squint/set.js": "https://unpkg.com/squint-cljs@0.6.88/src/squint/set.js",
"@codemirror/language": "https://ga.jspm.io/npm:@codemirror/language@6.10.0/dist/index.js",
"@codemirror/lang-javascript": "https://ga.jspm.io/npm:@codemirror/lang-javascript@6.2.1/dist/index.js",
"@codemirror/state": "https://ga.jspm.io/npm:@codemirror/state@6.4.0/dist/index.js",
"@codemirror/view": "https://ga.jspm.io/npm:@codemirror/view@6.23.0/dist/index.js",
"@codemirror/commands": "https://ga.jspm.io/npm:@codemirror/commands@6.3.0/dist/index.js",
"@codemirror/autocomplete": "https://ga.jspm.io/npm:@codemirror/autocomplete@6.11.1/dist/index.js",
"@lezer/highlight": "https://ga.jspm.io/npm:@lezer/highlight@1.1.6/dist/index.js",
"@lezer/common": "https://ga.jspm.io/npm:@lezer/common@1.2.0/dist/index.js",
"@lezer/javascript": "https://ga.jspm.io/npm:@lezer/javascript@1.4.12/dist/index.js",
"@nextjournal/lezer-clojure": "https://ga.jspm.io/npm:@nextjournal/lezer-clojure@1.0.0/dist/index.es.js",
"@nextjournal/clojure-mode": "https://unpkg.com/@nextjournal/clojure-mode@0.3.1/dist/nextjournal/clojure_mode.mjs",
"@nextjournal/clojure-mode/extensions/eval-region": "https://unpkg.com/@nextjournal/clojure-mode@0.3.1/dist/nextjournal/clojure_mode/extensions/eval_region.mjs",
"react": "https://esm.sh/react@18.2.0",
"react/jsx-runtime": "https://esm.sh/react@18.2.0/jsx-runtime",
"react/jsx-dev-runtime": "https://esm.sh/react@18.2.0/jsx-dev-runtime",
"react-dom": "https://esm.sh/react-dom@18.2.0",
"@lezer/lr": "https://ga.jspm.io/npm:@lezer/lr@1.3.13/dist/index.js",
"@lezer/markdown": "https://ga.jspm.io/npm:@lezer/markdown@1.1.0/dist/index.js",
"style-mod": "https://ga.jspm.io/npm:style-mod@4.1.0/src/style-mod.js",
"w3c-keyname": "https://ga.jspm.io/npm:w3c-keyname@2.2.8/index.js",
"react-inspector": "https://esm.sh/react-inspector"
}
}
</script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/water.css@2/out/light.css" />
<style>
:root {
--teal-color: #31afd0;
}
body {
max-width: inherit;
}
#main {
display: flex;
flex-direction: column;
max-height: 90dvh;
@media screen and (min-width: 768px) {
overflow: auto;
flex-direction: row;
}
}
#editor {
width: 100%;
max-height: 90dvh;
max-width: calc(100dvw - 20px);
border: 1px solid grey;
border-radius: 10px;
overflow: auto;
@media screen and (min-width: 768px) {
margin-bottom: 10px;
width: 50%;
}
}
#sidebar {
width: 100%;
max-height: 90dvh;
max-width: calc(100dvw - 40px);
border: 1px solid grey;
border-radius: 10px;
padding: 10px;
margin-top: 10px;
overflow: auto;
@media screen and (min-width: 768px) {
margin-top: 0px;
margin-left: 10px;
margin-bottom: 10px;
width: 50%;
}
}
#result {
margin: 10px;
background: var(--button-base);
}
</style>
<script type="module">
import { default_extensions, complete_keymap } from '@nextjournal/clojure-mode';
import { history, historyKeymap } from '@codemirror/commands';
import * as eval_region from '@nextjournal/clojure-mode/extensions/eval-region';
import { EditorView, drawSelection, keymap } from '@codemirror/view';
import { EditorState } from '@codemirror/state';
import { syntaxHighlighting, defaultHighlightStyle, foldGutter } from '@codemirror/language';
import { javascript } from "@codemirror/lang-javascript";
import * as prettier from "https://unpkg.com/prettier@3.1.1/standalone.mjs";
import prettierPluginJS from "https://unpkg.com/prettier@3.1.1/plugins/estree.mjs";
import prettierPluginBabel from "https://unpkg.com/prettier@3.1.1/plugins/babel.mjs";
import React from "react";
import ReactDOM from "react-dom";
import { Inspector } from "react-inspector";
let url = new URL(window.location.href);
let theme = EditorView.theme({
'.cm-content': {
whitespace: 'pre-wrap',
passing: '10px 0',
flex: '1 1 0',
},
'&.cm-focused': { outline: '0 !important' },
'.cm-line': {
padding: '0 9px',
'line-height': '1.6',
'font-size': '16px',
'font-family': 'var(--code-font)',
},
'.cm-matchingBracket': {
'border-bottom': '1px solid var(--teal-color)',
color: 'inherit',
},
'.cm-gutters': {
background: 'transparent',
border: 'none',
},
'.cm-gutterElement': { 'margin-left': '5px' },
// only show cursor when focused
'.cm-cursor': { visibility: 'hidden' },
'&.cm-focused .cm-cursor': { visibility: 'visible' },
});
let squintExtension = (opts) => {
return keymap.of([
{ key: 'Alt-Enter', run: evalCell },
{
key: opts.modifier + '-Enter',
run: evalAtCursor,
shift: evalToplevel,
},
]);
};
let urlParams = new URLSearchParams(window.location.search);
var repl = urlParams.get('repl') !== 'false';
class LazyIterable extends Array {
constructor(arr) {
super(arr);
}
}
let compilerState = null;
let jsEditor = null;
async function JSEditor(js) {
js = await prettier.format(js, {parser: "babel", plugins: [prettierPluginJS, prettierPluginBabel]});
js = js.trim();
const elt = document.querySelector('#compiledCode');
const fontSizeTheme = EditorView.theme({
$: {
fontSize: "5pt"
}
});
let extensions = [javascript({}).language, fontSizeTheme, foldGutter(), syntaxHighlighting(defaultHighlightStyle),
EditorView.editable.of(false)];
let state = EditorState.create({
doc: js,
extensions: extensions,
});
if (jsEditor) {
jsEditor.destroy();
}
let editor = new EditorView({
state: state,
parent: elt,
extensions: extensions,
});
jsEditor = editor;
}
let reactRoot = ReactDOM.createRoot(document.querySelector("#result"));
let evalCode = async (code) => {
try {
let importSource = url.searchParams.get('jsx.import-source') || 'react';
let opts = { repl: repl, 'elide-exports': repl, context: repl ? 'return' : 'statement', "jsx-runtime": { "import-source": importSource, development: true } };
compilerState = compileStringEx(`(do ${code}\n)`, opts, compilerState);
let js = compilerState.javascript;
if (dev) {
js = js.replaceAll("'squint-cljs/", "'http://" + window.location.host + '/');
}
JSEditor(js);
if (!repl) {
const encodedJs = encodeURIComponent(js);
const dataUri =
'data:text/javascript;charset=utf-8;eval=' + Date.now() + ',' + encodedJs;
let result = await import(dataUri);
} else {
let result = await eval(`(async function() { ${js} })()`);
if (result && result?.constructor?.name === 'LazyIterable') {
let stdlib = (await import("squint-cljs/core.js"));
let take_fn = stdlib.take;
let concat_fn = stdlib.concat;
let end = {};
result = [...take_fn(10, concat_fn(result, [end]))];
let isEnd = result[result.length - 1] !== end;
if (isEnd) result.push('...')
else result.pop();
result = new LazyIterable(result);
}
reactRoot.render(React.createElement(Inspector, {data: result}));
if (docChanged) {
url.searchParams.delete('src');
window.history.replaceState(null, null, url);
localStorage.setItem('document', editor.state.doc.toString());
docChanged = false;
}
}
} catch (e) {
document.querySelector('#result').innerText =
e.message + '\n\n' + e.stack;
console.error(e);
}
};
let evalCell = (opts) => {
let js = opts.state.doc.toString();
evalCode(js);
return true;
};
let evalAtCursor = (opts) => {
if (!repl) return;
let js = eval_region.cursor_node_string(opts.state).toString();
evalCode(js);
return true;
};
let docChanged = false;
let evalToplevel = (js) => {
if (!repl) return;
return true;
};
let updateExt = EditorView.updateListener.of((update) => {
if (update.docChanged) docChanged = true;
});
const platform = navigator.platform;
const isMac = platform.startsWith('Mac') || platform.startsWith('iP');
let modifier = localStorage.getItem("editor.modifier") || (isMac ? 'Meta' : 'Ctrl');
if (!isMac || modifier === 'Ctrl') document.getElementById('modifierDesc').innerText = 'Ctrl'
let extensions = [
history(),
theme,
foldGutter(),
syntaxHighlighting(defaultHighlightStyle),
drawSelection(),
keymap.of(complete_keymap),
keymap.of(historyKeymap),
squintExtension({ modifier: modifier }),
eval_region.extension({ modifier: modifier }),
updateExt,
...default_extensions,
];
let doc = `
(comment
(fizz-buzz 1)
(fizz-buzz 3)
(fizz-buzz 5)
(fizz-buzz 15)
(fizz-buzz 17)
(fizz-buzz 42))
(defn fizz-buzz [n]
(condp (fn [a b] (zero? (mod b a))) n
15 "fizzbuzz"
3 "fizz"
5 "buzz"
n))
(require '["https://esm.sh/canvas-confetti@1.6.0$default" :as confetti])
(do
(js-await (confetti))
(+ 1 2 3))
`.trim();
const aocDoc = `
;; Helper functions:
;; (fetch-input year day) - get AOC input
;; (append str) - append str to DOM
;; (spy x) - log x to console and return x
;; Remember to update the year and day in the fetch-input call.
(def input (->> (js-await (fetch-input 2022 1))
#_spy
str/split-lines
(mapv parse-long)))
(defn part-1
[]
(->> input
(partition-by nil?)
(take-nth 2)
(map #(apply + %))
(apply max)))
(defn part-2
[]
(->> input
(partition-by nil?)
(take-nth 2)
(map #(apply + %))
(sort-by -)
(take 3)
(apply +)))
(time (part-1))
#_(time (part-2))`.trim();
const aocBoilerplateUrl = 'https://gist.githubusercontent.com/borkdude/cf94b492d948f7f418aa81ba54f428ff/raw/a6e9992b079e20e21d753e8c75a7353c5908b225/aoc_ui.cljs';
let boilerplate = urlParams.get('boilerplate');
let boilerplateSrc;
if (boilerplate) {
boilerplateSrc = await fetch(boilerplate).then((p) => p.text());
}
let src = urlParams.get('src');
if (src) {
if (/http(s)?:\/\/.*/.test(src)) {
src = await fetch(src).then((p) => p.text());
} else {
src = atob(src);
}
doc = src;
} else {
doc = localStorage.getItem('document') || doc;
}
let state = EditorState.create({
doc: doc,
extensions: extensions,
});
let editorElt = document.querySelector('#editor');
let editor = new EditorView({
state: state,
parent: editorElt,
extensions: extensions,
});
globalThis.editor = editor;
var dev = JSON.parse(urlParams.get('dev')) ?? location.hostname === 'localhost';
var squintUrl;
if (dev) {
console.log('Loading development squint.js');
squintUrl = '/index.js';
} else {
squintUrl = 'squint-cljs';
}
var squint = await import(squintUrl);
var compileStringEx = squint.compileStringEx;
window.compile = () => {
let code = editor.state.doc.toString();
code = (boilerplateSrc || '') + '\n\n' + code;
evalCode(code);
};
window.share = () => {
let code = editor.state.doc.toString().trim();
code = btoa(code);
url.searchParams.set('src', code);
window.location = url;
};
window.blankAOC = () => {
const code = btoa(aocDoc);
const url = new URL(window.location);
url.searchParams.set('src', code);
url.searchParams.set('boilerplate', aocBoilerplateUrl);
url.searchParams.set('repl', true);
window.location = url;
}
window.changeREPL = (target) => {
document.getElementById('result').innerText = '';
if (target.checked) {
repl = true;
compile();
} else {
repl = false;
compile();
}
url.searchParams.set('repl', repl);
window.history.replaceState(null, null, url);
};
if (repl) {
document.getElementById('replCheckBox').checked = true;
}
compile();
</script>
</head>
<body>
<div id="main">
<div style="position: absolute; right: 0px; top: 0px; margin: 2px">
<a href="https://gitHub.com/squint-cljs/squint"><img
src="https://img.shields.io/github/stars/squint-cljs/squint.svg?style=social&label=Star"></a>
</div>
<div id="editor">
</div>
<div id="sidebar">
<button onClick="compile()">
Compile!
</button>
<button onClick="share()"
title="When sharing, the window URL will be updated to encode the code in the text editor. Copy it and share it with your friends!">
Share!
</button>
<button style="margin-bottom: 10px;" onClick="blankAOC()">
Create blank AOC Playground!
</button>
<br>
<label>REPL-mode
<input type="checkbox" id="replCheckBox" name="repl" onChange="changeREPL(this)" />
</label>
<br>
In REPL-mode you can evaluate individual expression with <span id="modifierDesc">⌘</span> + Enter. The result will
appear below.
To evaluate the whole program at once, use Alt + Enter;
<div id="result"></div>
Compiled code:
<div id="compiledCode"></div>
</div>
</div>
</body>
</html>