103 lines
2.6 KiB
JavaScript
103 lines
2.6 KiB
JavaScript
// TODO: Abstract/Factor
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let pending_grammar = null;
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let next_grammar = null;
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let pending_document = null;
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let next_document = null;
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const STATUS = document.getElementById("status-line");
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function submit_grammar(code) {
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if (pending_grammar) {
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console.log("Grammar still pending, parking it");
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next_grammar = code;
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} else {
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pending_grammar = code;
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worker.postMessage({kind: "grammar_module", data: code});
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console.log("Grammar posted");
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}
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}
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function submit_document(code) {
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if (pending_document) {
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console.log("Document still pending, parking it");
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next_document = code;
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} else {
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pending_document = code;
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worker.postMessage({kind: "document", data: code});
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console.log("Document posted");
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}
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}
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const worker = new Worker('worker.js');
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worker.onmessage = (e) => {
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const message = e.data;
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if (message.kind === "grammar_status") {
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STATUS.innerText = message.message;
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if ((message.status === "ok") || (message.status === "error")) {
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pending_grammar = null;
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if (next_grammar) {
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pending_grammar = next_grammar;
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next_grammar = null;
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worker.postMessage({kind: "grammar_module", data: pending_grammar});
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console.log("Posted another grammar");
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}
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}
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}
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if (message.kind === "doc_status") {
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STATUS.innerText = message.message;
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if ((message.status === "ok") || (message.status === "error")) {
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pending_document = null;
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if (next_document) {
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pending_document = next_document;
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next_document = null;
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worker.postMessage({kind: "document", data: pending_document});
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console.log("Posted another document");
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}
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}
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}
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};
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function setup_editors() {
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const grammar_editor = CodeMirror.fromTextArea(
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document.getElementById("grammar"),
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{
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lineNumbers: true,
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mode: "python",
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value: "from parser import Grammar\n\nclass MyGrammar(Grammar):\n pass\n",
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},
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);
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let grammar_change_timer_id = null;
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grammar_editor.doc.on("change", () => {
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clearTimeout(grammar_change_timer_id);
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grammar_change_timer_id = setTimeout(() => {
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grammar_change_timer_id = null;
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submit_grammar(grammar_editor.doc.getValue());
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}, 100);
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});
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const input_editor = CodeMirror.fromTextArea(
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document.getElementById("input"),
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{
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lineNumbers: true,
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},
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);
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let input_change_timer_id = null;
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input_editor.doc.on("change", () => {
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clearTimeout(input_change_timer_id);
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input_change_timer_id = setTimeout(() => {
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input_change_timer_id = null;
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submit_document(input_editor.doc.getValue());
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}, 100);
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});
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}
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setup_editors();
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