The Tor Browser / file comparison
comparison: addon-sdk/source/lib/sdk/console/traceback.js
addon-sdk/source/lib/sdk/console/traceback.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:6f640dfa5b0d |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 module.metadata = { | |
| 8 "stability": "experimental" | |
| 9 }; | |
| 10 | |
| 11 const { Cc, Ci, components } = require("chrome"); | |
| 12 const { parseStack, sourceURI } = require("toolkit/loader"); | |
| 13 const { readURISync } = require("../net/url"); | |
| 14 | |
| 15 exports.sourceURI = sourceURI | |
| 16 | |
| 17 function safeGetFileLine(path, line) { | |
| 18 try { | |
| 19 var scheme = require("../url").URL(path).scheme; | |
| 20 // TODO: There should be an easier, more accurate way to figure out | |
| 21 // what's the case here. | |
| 22 if (!(scheme == "http" || scheme == "https")) | |
| 23 return readURISync(path).split("\n")[line - 1]; | |
| 24 } catch (e) {} | |
| 25 return null; | |
| 26 } | |
| 27 | |
| 28 function nsIStackFramesToJSON(frame) { | |
| 29 var stack = []; | |
| 30 | |
| 31 while (frame) { | |
| 32 if (frame.filename) { | |
| 33 stack.unshift({ | |
| 34 fileName: sourceURI(frame.filename), | |
| 35 lineNumber: frame.lineNumber, | |
| 36 name: frame.name | |
| 37 }); | |
| 38 } | |
| 39 frame = frame.caller; | |
| 40 } | |
| 41 | |
| 42 return stack; | |
| 43 }; | |
| 44 | |
| 45 var fromException = exports.fromException = function fromException(e) { | |
| 46 if (e instanceof Ci.nsIException) | |
| 47 return nsIStackFramesToJSON(e.location); | |
| 48 if (e.stack && e.stack.length) | |
| 49 return parseStack(e.stack); | |
| 50 if (e.fileName && typeof(e.lineNumber == "number")) | |
| 51 return [{fileName: sourceURI(e.fileName), | |
| 52 lineNumber: e.lineNumber, | |
| 53 name: null}]; | |
| 54 return []; | |
| 55 }; | |
| 56 | |
| 57 var get = exports.get = function get() { | |
| 58 return nsIStackFramesToJSON(components.stack.caller); | |
| 59 }; | |
| 60 | |
| 61 var format = exports.format = function format(tbOrException) { | |
| 62 if (tbOrException === undefined) { | |
| 63 tbOrException = get(); | |
| 64 tbOrException.pop(); | |
| 65 } | |
| 66 | |
| 67 var tb; | |
| 68 if (typeof(tbOrException) == "object" && | |
| 69 tbOrException.constructor.name == "Array") | |
| 70 tb = tbOrException; | |
| 71 else | |
| 72 tb = fromException(tbOrException); | |
| 73 | |
| 74 var lines = ["Traceback (most recent call last):"]; | |
| 75 | |
| 76 tb.forEach( | |
| 77 function(frame) { | |
| 78 if (!(frame.fileName || frame.lineNumber || frame.name)) | |
| 79 return; | |
| 80 | |
| 81 lines.push(' File "' + frame.fileName + '", line ' + | |
| 82 frame.lineNumber + ', in ' + frame.name); | |
| 83 var sourceLine = safeGetFileLine(frame.fileName, frame.lineNumber); | |
| 84 if (sourceLine) | |
| 85 lines.push(' ' + sourceLine.trim()); | |
| 86 }); | |
| 87 | |
| 88 return lines.join("\n"); | |
| 89 }; |
