89 lines
2.4 KiB
JavaScript
89 lines
2.4 KiB
JavaScript
/**
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* Copyright 2017 Google Inc. All rights reserved.
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* Modifications copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const path = require('path');
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// Hack for our own tests.
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const testRunnerTestFile = path.join(__dirname, 'test', 'testrunner.spec.js');
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class Location {
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constructor() {
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this._fileName = '';
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this._filePath = '';
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this._lineNumber = 0;
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this._columnNumber = 0;
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}
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fileName() {
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return this._fileName;
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}
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filePath() {
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return this._filePath;
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}
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lineNumber() {
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return this._lineNumber;
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}
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columnNumber() {
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return this._columnNumber;
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}
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toString() {
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return this._fileName + ':' + this._lineNumber;
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}
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toDetailedString() {
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return this._fileName + ':' + this._lineNumber + ':' + this._columnNumber;
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}
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static getCallerLocation(ignorePrefix = __dirname) {
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const error = new Error();
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const stackFrames = error.stack.split('\n').slice(1);
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const location = new Location();
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// Find first stackframe that doesn't point to this file.
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for (let frame of stackFrames) {
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frame = frame.trim();
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if (!frame.startsWith('at '))
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return null;
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if (frame.endsWith(')')) {
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const from = frame.indexOf('(');
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frame = frame.substring(from + 1, frame.length - 1);
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} else {
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frame = frame.substring('at '.length);
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}
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const match = frame.match(/^(.*):(\d+):(\d+)$/);
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if (!match)
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return null;
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const filePath = match[1];
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if (filePath === __filename || (filePath.startsWith(ignorePrefix) && filePath !== testRunnerTestFile))
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continue;
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location._filePath = filePath;
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location._fileName = filePath.split(path.sep).pop();
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location._lineNumber = parseInt(match[2], 10);
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location._columnNumber = parseInt(match[3], 10);
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return location;
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}
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return location;
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}
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}
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module.exports = Location;
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