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compilerepl.html
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compilerepl.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Scrapscript Web REPL</title>
<link rel="shortcut icon" type="image/x-icon" href="data:image/vnd.microsoft.icon;base64,AAABAAEAEBAQAAAAAAAoAQAAFgAAACgAAAAQAAAAIAAAAAEABAAAAAAAgAAAAAAAAAAAAAAAEAAAAAAAAAD/AAAA////AAAA/wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAREBEQAAAAAQAQEAEAAAABABAQAQAAAAAREBEQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACIiIiIiIiIiIiIiIiIiIiIiERIiESEiIiIiESEiISIiIhEiISIhEiIiIREiESEhIiIiIiIiIiIiIiIiIiIiIiIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA">
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=Fira+Code&display=swap"
rel="stylesheet"
/>
<link
href="https://fonts.googleapis.com/css2?family=Rubik:ital,wght@0,500;0,700&display=swap"
rel="stylesheet"
/>
<link
href="https://fonts.googleapis.com/css2?family=Nunito+Sans:ital,wght@0,400;0,700;0,900;1,400&display=swap"
rel="stylesheet"
/>
<link rel="stylesheet" href="/style.css" />
</head>
<body>
<main>
<div>
<p>See <a href="https://scrapscript.org/">scrapscript.org</a> for a slightly
out of date language reference.</p>
<p>This REPL is completely client-side and works by running
<a href="https://github.com/tekknolagi/scrapscript">scrapscript.py</a> in the
browser using <a href="https://pyodide.org/">Pyodide</a>.</p>
</div>
<div>
<!-- TODO(max): Add button to save to/load from disk. -->
<button id="clear-local-storage">Clear</button>
</div>
<div id="output" style="height: 400px; overflow: auto;">
Output:
</div>
<div>
<input id="input" type="text" disabled placeholder="Loading pyodide..." /><input id="submit-input" type="submit" value="Submit" />
</div>
<script type="module">
"use strict";
function updateHistory(inp, out) {
const wrap = document.createElement("div");
const pre_inp = document.createElement("pre");
pre_inp.setAttribute("class", "language-text");
const code_inp = document.createElement("code");
code_inp.setAttribute("class", "language-text");
code_inp.append(`>>> ${inp}`);
pre_inp.append(code_inp);
const pre_out = document.createElement("pre");
pre_out.setAttribute("class", "result language-text");
const code_out = document.createElement("code");
code_out.setAttribute("class", "language-text");
code_out.append(`${out}`);
pre_out.append(code_out);
wrap.append(pre_inp);
wrap.append(pre_out);
output.append(wrap);
output.scrollTop = output.scrollHeight;
}
async function sendRequest(exp) {
const compiler = document.compiler;
try {
return {result: compiler.compile_to_string(exp, false), ok: true};
} catch (e) {
return {text: () => e.toString(), ok: false};
}
}
let input = document.getElementById("input");
const output = document.getElementById("output");
const history = [];
const clearButton = document.getElementById("clear-local-storage");
const submitButton = document.getElementById("submit-input");
function renderHistory() {
for (const [inp, out] of history) {
updateHistory(inp, out);
}
}
function loadFromLocalStorage() {
history.length = 0;
output.innerHTML = "";
renderHistory();
}
function expandInput() {
if (input.tagName === "TEXTAREA") {
return;
}
const textarea = document.createElement("textarea");
textarea.setAttribute("id", "input");
textarea.setAttribute("rows", "1");
textarea.setAttribute("style", "height: 1.5em;");
textarea.value = input.value;
input.replaceWith(textarea);
input = textarea;
input.focus();
input.addEventListener("keyup", e => inputHandler(e));
}
function shrinkInput() {
if (input.tagName === "INPUT") {
return;
}
const newInput = document.createElement("input");
newInput.setAttribute("id", "input");
newInput.setAttribute("type", "text");
newInput.value = input.value;
input.replaceWith(newInput);
input = newInput;
input.focus();
input.addEventListener("keyup", e => inputHandler(e));
}
async function submitInput() {
const response = await sendRequest(input.value);
if (response.ok) {
const {result} = response;
updateHistory(input.value, result);
history.push([input.value, result]);
input.value = "";
} else {
const msg = await response.text();
updateHistory(input.value, msg);
input.value = "";
}
}
loadFromLocalStorage();
input.focus();
async function inputHandler(e) {
// TODO(max): Make up/down arrow keys navigate history
if (e.key === "Enter") {
if (e.shiftKey && input.tagName === "INPUT") {
// Shift-Enter expands the input to a textarea and does not submit
// input.
expandInput();
return;
}
if (input.tagName === "TEXTAREA") {
// Enter in a textarea should not submit input.
if (e.shiftKey) {
shrinkInput();
}
return;
}
submitInput()
}
}
input.addEventListener("keyup", e => inputHandler(e));
clearButton.addEventListener("click", () => {
window.localStorage.clear();
loadFromLocalStorage();
input.focus();
});
submitButton.addEventListener("click", () => {
submitInput()
input.focus();
});
</script>
<script>
"use strict";
async function main() {
// const scrapscript = await fetch('/scrapscript.py');
let indexURL = "https://cdn.jsdelivr.net/pyodide/v0.25.1/full/";
const urlParams = new URLSearchParams(window.location.search);
const buildParam = urlParams.get("build");
if (buildParam) {
if (["full", "debug", "pyc"].includes(buildParam)) {
indexURL = indexURL.replace(
"/full/",
"/" + urlParams.get("build") + "/",
);
} else {
console.warn(
'Invalid URL parameter: build="' +
buildParam +
'". Using default "full".',
);
}
}
const { loadPyodide } = await import(indexURL + "pyodide.mjs");
const pyodide = await loadPyodide({
stdout: (msg) => console.log(`Pyodide: ${msg}`),
});
await pyodide.runPythonAsync(`
from pyodide.http import pyfetch
response = await pyfetch("/scrapscript.py")
with open("scrapscript.py", "wb") as f:
f.write(await response.bytes())
response = await pyfetch("/compiler.py")
with open("compiler.py", "wb") as f:
f.write(await response.bytes())
response = await pyfetch("/runtime.c")
with open("runtime.c", "wb") as f:
f.write(b"// ...runtime goes here...")
`)
const scrapscript = await pyodide.pyimport("scrapscript");
const compiler = await pyodide.pyimport("compiler");
document.compiler = compiler;
input.removeAttribute("disabled");
input.setAttribute("placeholder", "Enter Scrapscript code here...");
input.focus();
}
main();
</script>
</main>
<script data-goatcounter="https://scrapscript.goatcounter.com/count"
async src="//gc.zgo.at/count.js"></script>
</body>
</html>