addon-sdk/source/lib/sdk/console/traceback.js@6474c204b198 (annotated)
addon-sdk/source/lib/sdk/console/traceback.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | "use strict"; |
| michael@0 | 6 | |
| michael@0 | 7 | module.metadata = { |
| michael@0 | 8 | "stability": "experimental" |
| michael@0 | 9 | }; |
| michael@0 | 10 | |
| michael@0 | 11 | const { Cc, Ci, components } = require("chrome"); |
| michael@0 | 12 | const { parseStack, sourceURI } = require("toolkit/loader"); |
| michael@0 | 13 | const { readURISync } = require("../net/url"); |
| michael@0 | 14 | |
| michael@0 | 15 | exports.sourceURI = sourceURI |
| michael@0 | 16 | |
| michael@0 | 17 | function safeGetFileLine(path, line) { |
| michael@0 | 18 | try { |
| michael@0 | 19 | var scheme = require("../url").URL(path).scheme; |
| michael@0 | 20 | // TODO: There should be an easier, more accurate way to figure out |
| michael@0 | 21 | // what's the case here. |
| michael@0 | 22 | if (!(scheme == "http" || scheme == "https")) |
| michael@0 | 23 | return readURISync(path).split("\n")[line - 1]; |
| michael@0 | 24 | } catch (e) {} |
| michael@0 | 25 | return null; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | function nsIStackFramesToJSON(frame) { |
| michael@0 | 29 | var stack = []; |
| michael@0 | 30 | |
| michael@0 | 31 | while (frame) { |
| michael@0 | 32 | if (frame.filename) { |
| michael@0 | 33 | stack.unshift({ |
| michael@0 | 34 | fileName: sourceURI(frame.filename), |
| michael@0 | 35 | lineNumber: frame.lineNumber, |
| michael@0 | 36 | name: frame.name |
| michael@0 | 37 | }); |
| michael@0 | 38 | } |
| michael@0 | 39 | frame = frame.caller; |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | return stack; |
| michael@0 | 43 | }; |
| michael@0 | 44 | |
| michael@0 | 45 | var fromException = exports.fromException = function fromException(e) { |
| michael@0 | 46 | if (e instanceof Ci.nsIException) |
| michael@0 | 47 | return nsIStackFramesToJSON(e.location); |
| michael@0 | 48 | if (e.stack && e.stack.length) |
| michael@0 | 49 | return parseStack(e.stack); |
| michael@0 | 50 | if (e.fileName && typeof(e.lineNumber == "number")) |
| michael@0 | 51 | return [{fileName: sourceURI(e.fileName), |
| michael@0 | 52 | lineNumber: e.lineNumber, |
| michael@0 | 53 | name: null}]; |
| michael@0 | 54 | return []; |
| michael@0 | 55 | }; |
| michael@0 | 56 | |
| michael@0 | 57 | var get = exports.get = function get() { |
| michael@0 | 58 | return nsIStackFramesToJSON(components.stack.caller); |
| michael@0 | 59 | }; |
| michael@0 | 60 | |
| michael@0 | 61 | var format = exports.format = function format(tbOrException) { |
| michael@0 | 62 | if (tbOrException === undefined) { |
| michael@0 | 63 | tbOrException = get(); |
| michael@0 | 64 | tbOrException.pop(); |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | var tb; |
| michael@0 | 68 | if (typeof(tbOrException) == "object" && |
| michael@0 | 69 | tbOrException.constructor.name == "Array") |
| michael@0 | 70 | tb = tbOrException; |
| michael@0 | 71 | else |
| michael@0 | 72 | tb = fromException(tbOrException); |
| michael@0 | 73 | |
| michael@0 | 74 | var lines = ["Traceback (most recent call last):"]; |
| michael@0 | 75 | |
| michael@0 | 76 | tb.forEach( |
| michael@0 | 77 | function(frame) { |
| michael@0 | 78 | if (!(frame.fileName || frame.lineNumber || frame.name)) |
| michael@0 | 79 | return; |
| michael@0 | 80 | |
| michael@0 | 81 | lines.push(' File "' + frame.fileName + '", line ' + |
| michael@0 | 82 | frame.lineNumber + ', in ' + frame.name); |
| michael@0 | 83 | var sourceLine = safeGetFileLine(frame.fileName, frame.lineNumber); |
| michael@0 | 84 | if (sourceLine) |
| michael@0 | 85 | lines.push(' ' + sourceLine.trim()); |
| michael@0 | 86 | }); |
| michael@0 | 87 | |
| michael@0 | 88 | return lines.join("\n"); |
| michael@0 | 89 | }; |
