debug-server-next
Version:
Dev server for hippy-core.
55 lines (54 loc) • 2.21 kB
JavaScript
// Copyright 2021 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/* eslint-disable rulesdir/no_underscored_properties */
import * as TextUtils from '../../../../models/text_utils/text_utils.js';
import * as UI from '../../legacy.js';
export class SyntaxHighlighter {
_mimeType;
_stripExtraWhitespace;
constructor(mimeType, stripExtraWhitespace) {
this._mimeType = mimeType;
this._stripExtraWhitespace = stripExtraWhitespace;
}
createSpan(content, className) {
const span = document.createElement('span');
span.className = className.replace(/\S+/g, 'cm-$&');
if (this._stripExtraWhitespace && className !== 'whitespace') {
content = content.replace(/^[\n\r]*/, '').replace(/\s*$/, '');
}
UI.UIUtils.createTextChild(span, content);
return span;
}
syntaxHighlightNode(node) {
const lines = node.textContent ? node.textContent.split('\n') : [];
let plainTextStart;
let line;
node.removeChildren();
const tokenize = TextUtils.CodeMirrorUtils.TokenizerFactory.instance().createTokenizer(this._mimeType);
for (let i = 0; i < lines.length; ++i) {
line = lines[i];
plainTextStart = 0;
tokenize(line, processToken.bind(this));
if (plainTextStart < line.length) {
const plainText = line.substring(plainTextStart, line.length);
UI.UIUtils.createTextChild(node, plainText);
}
if (i < lines.length - 1) {
UI.UIUtils.createTextChild(node, '\n');
}
}
return Promise.resolve();
function processToken(token, tokenType, column, newColumn) {
if (!tokenType) {
return;
}
if (column > plainTextStart) {
const plainText = line.substring(plainTextStart, column);
UI.UIUtils.createTextChild(node, plainText);
}
node.appendChild(this.createSpan(token, tokenType));
plainTextStart = newColumn;
}
}
}