mirror of
https://github.com/github/semantic.git
synced 2024-12-21 05:41:54 +03:00
132 lines
3.6 KiB
HTML
132 lines
3.6 KiB
HTML
<!doctype html>
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<html>
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<head>
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<title>semantic-diff</title>
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<style type="text/css">
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body {
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margin: 0;
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padding: 0;
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}
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.insert {
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background-color: #eaffea;
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outline: 1px solid #c1e9c1;
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margin-left: 50%;
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}
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.delete {
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background-color: #ffecec;
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outline: 1px solid #f1c0c0;
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margin-right: 50%;
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}
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.replace {
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background-color: #eee;
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}
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</style>
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<script type="text/javascript">
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function loadJSON(path, callback) {
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var request = new XMLHttpRequest();
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request.overrideMimeType("application/json");
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request.open('GET', '' + path, true);
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request.onreadystatechange = function () {
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if (request.readyState == 4 && (request.status == "200" || request.status == 0)) {
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callback(JSON.parse(request.responseText));
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}
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};
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request.send(null);
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}
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function wrap(tagName, element) {
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if (element == null) { return null; }
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var node = document.createElement(tagName);
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node.appendChild(element);
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return node;
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}
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function Delete(before) {
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this.before = before;
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return this;
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}
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function Insert(after) {
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this.after = after;
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return this;
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}
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function Replace(before, after) {
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this.before = before;
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this.after = after;
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return this;
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}
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function Term(range, syntax) {
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this.range = range;
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this.syntax = syntax;
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return this;
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}
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function toDOM(view) {
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if (view instanceof Delete) {
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var element = document.createElement("div");
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element.classList.add("delete");
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element.appendChild(toDOM(view.before));
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return element;
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}
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if (view instanceof Term) {
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var element = document.createElement("div");
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element.classList.add("term");
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element.appendChild(toDOM(view.syntax));
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return element;
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}
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}
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function term(json, a, b) {
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if (json.extract == null || json.unwrap == null) { return null; }
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return new Term(json.extract, syntax(json.unwrap, a, b, term));
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}
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function patch(patch, a, b) {
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if (patch.delete != null) { return new Delete(term(patch.delete, a, b)); }
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if (patch.insert != null) { return new Insert(term(patch.insert, a, b)); }
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if (patch.replace != null) { return new Replace(term(patch.replace.before, a, b), term(patch.replace.after, a, b)); }
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}
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function indexed(array, a, b, continuation) {
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var out = [];
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for (index in array) {
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out.push(continuation(array[index], a, b));
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}
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return out;
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}
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function keyed(object, a, b, continuation) {
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var out = {};
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for (key in object) {
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out[key] = continuation(object[key], a, b);
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}
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return out;
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}
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function syntax(json, a, b, continuation) {
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if (json instanceof Array) { return indexed(json, a, b, continuation); }
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if (json instanceof Object) { return keyed(json, a, b, continuation); }
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return continuation(json, a, b);
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}
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function diff(json, a, b) {
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if (json.pure != null) { return patch(json.pure, a, b); }
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if (json.roll != null) { return syntax(json.roll, a, b, diff); }
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}
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</script>
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</head>
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<body>
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<div id="diff"></div>
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<script type="text/javascript">
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loadJSON('diff.json', function (json) {
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console.log(json.diff);
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document.getElementById("diff").appendChild(toDOM(diff(json.diff, json.a, json.b)));
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});
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</script>
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</body>
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</html>
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