diff options
Diffstat (limited to 'tools/addon-sdk-1.7/packages/api-utils/lib/traceback.js')
-rw-r--r-- | tools/addon-sdk-1.7/packages/api-utils/lib/traceback.js | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/tools/addon-sdk-1.7/packages/api-utils/lib/traceback.js b/tools/addon-sdk-1.7/packages/api-utils/lib/traceback.js deleted file mode 100644 index c55fd9d..0000000 --- a/tools/addon-sdk-1.7/packages/api-utils/lib/traceback.js +++ /dev/null @@ -1,123 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -"use strict"; - -const {Cc,Ci,components} = require("chrome"); - -// Undo the auto-parentification of URLs done in bug 418356. -function deParentifyURL(url) { - return url ? url.split(" -> ").slice(-1)[0] : url; -} - -// TODO: We might want to move this function to url or some similar -// module. -function getLocalFile(path) { - var ios = Cc['@mozilla.org/network/io-service;1'] - .getService(Ci.nsIIOService); - var channel = ios.newChannel(path, null, null); - var iStream = channel.open(); - var siStream = Cc['@mozilla.org/scriptableinputstream;1'] - .createInstance(Ci.nsIScriptableInputStream); - siStream.init(iStream); - var data = new String(); - data += siStream.read(-1); - siStream.close(); - iStream.close(); - return data; -} - -function safeGetFileLine(path, line) { - try { - var scheme = require("./url").URL(path).scheme; - // TODO: There should be an easier, more accurate way to figure out - // what's the case here. - if (!(scheme == "http" || scheme == "https")) - return getLocalFile(path).split("\n")[line - 1]; - } catch (e) {} - return null; -} - -function errorStackToJSON(stack) { - var lines = stack.split("\n"); - - var frames = []; - lines.forEach( - function(line) { - if (!line) - return; - var atIndex = line.indexOf("@"); - var colonIndex = line.lastIndexOf(":"); - var filename = deParentifyURL(line.slice(atIndex + 1, colonIndex)); - var lineNo = parseInt(line.slice(colonIndex + 1)); - var funcSig = line.slice(0, atIndex); - var funcName = funcSig.slice(0, funcSig.indexOf("(")); - frames.unshift({filename: filename, - funcName: funcName, - lineNo: lineNo}); - }); - - return frames; -}; - -function nsIStackFramesToJSON(frame) { - var stack = []; - - while (frame) { - if (frame.filename) { - var filename = deParentifyURL(frame.filename); - stack.splice(0, 0, {filename: filename, - lineNo: frame.lineNumber, - funcName: frame.name}); - } - frame = frame.caller; - } - - return stack; -}; - -var fromException = exports.fromException = function fromException(e) { - if (e instanceof Ci.nsIException) - return nsIStackFramesToJSON(e.location); - if (e.stack && e.stack.length) - return errorStackToJSON(e.stack); - if (e.fileName && typeof(e.lineNumber == "number")) - return [{filename: deParentifyURL(e.fileName), - lineNo: e.lineNumber, - funcName: null}]; - return []; -}; - -var get = exports.get = function get() { - return nsIStackFramesToJSON(components.stack.caller); -}; - -var format = exports.format = function format(tbOrException) { - if (tbOrException === undefined) { - tbOrException = get(); - tbOrException.splice(-1, 1); - } - - var tb; - if (typeof(tbOrException) == "object" && - tbOrException.constructor.name == "Array") - tb = tbOrException; - else - tb = fromException(tbOrException); - - var lines = ["Traceback (most recent call last):"]; - - tb.forEach( - function(frame) { - if (!(frame.filename || frame.lineNo || frame.funcName)) - return; - lines.push(' File "' + frame.filename + '", line ' + - frame.lineNo + ', in ' + frame.funcName); - var sourceLine = safeGetFileLine(frame.filename, frame.lineNo); - if (sourceLine) - lines.push(' ' + sourceLine.trim()); - }); - - return lines.join("\n"); -}; |