The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/addon-sdk/source/lib/sdk/console/traceback.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,89 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +"use strict";
     1.9 +
    1.10 +module.metadata = {
    1.11 +  "stability": "experimental"
    1.12 +};
    1.13 +
    1.14 +const { Cc, Ci, components } = require("chrome");
    1.15 +const { parseStack, sourceURI } = require("toolkit/loader");
    1.16 +const { readURISync } = require("../net/url");
    1.17 +
    1.18 +exports.sourceURI = sourceURI
    1.19 +
    1.20 +function safeGetFileLine(path, line) {
    1.21 +  try {
    1.22 +    var scheme = require("../url").URL(path).scheme;
    1.23 +    // TODO: There should be an easier, more accurate way to figure out
    1.24 +    // what's the case here.
    1.25 +    if (!(scheme == "http" || scheme == "https"))
    1.26 +      return readURISync(path).split("\n")[line - 1];
    1.27 +  } catch (e) {}
    1.28 +  return null;
    1.29 +}
    1.30 +
    1.31 +function nsIStackFramesToJSON(frame) {
    1.32 +  var stack = [];
    1.33 +
    1.34 +  while (frame) {
    1.35 +    if (frame.filename) {
    1.36 +      stack.unshift({
    1.37 +        fileName: sourceURI(frame.filename),
    1.38 +        lineNumber: frame.lineNumber,
    1.39 +        name: frame.name
    1.40 +      });
    1.41 +    }
    1.42 +    frame = frame.caller;
    1.43 +  }
    1.44 +
    1.45 +  return stack;
    1.46 +};
    1.47 +
    1.48 +var fromException = exports.fromException = function fromException(e) {
    1.49 +  if (e instanceof Ci.nsIException)
    1.50 +    return nsIStackFramesToJSON(e.location);
    1.51 +  if (e.stack && e.stack.length)
    1.52 +    return parseStack(e.stack);
    1.53 +  if (e.fileName && typeof(e.lineNumber == "number"))
    1.54 +    return [{fileName: sourceURI(e.fileName),
    1.55 +             lineNumber: e.lineNumber,
    1.56 +             name: null}];
    1.57 +  return [];
    1.58 +};
    1.59 +
    1.60 +var get = exports.get = function get() {
    1.61 +  return nsIStackFramesToJSON(components.stack.caller);
    1.62 +};
    1.63 +
    1.64 +var format = exports.format = function format(tbOrException) {
    1.65 +  if (tbOrException === undefined) {
    1.66 +    tbOrException = get();
    1.67 +    tbOrException.pop();
    1.68 +  }
    1.69 +
    1.70 +  var tb;
    1.71 +  if (typeof(tbOrException) == "object" &&
    1.72 +      tbOrException.constructor.name == "Array")
    1.73 +    tb = tbOrException;
    1.74 +  else
    1.75 +    tb = fromException(tbOrException);
    1.76 +
    1.77 +  var lines = ["Traceback (most recent call last):"];
    1.78 +
    1.79 +  tb.forEach(
    1.80 +    function(frame) {
    1.81 +      if (!(frame.fileName || frame.lineNumber || frame.name))
    1.82 +      	return;
    1.83 +
    1.84 +      lines.push('  File "' + frame.fileName + '", line ' +
    1.85 +                 frame.lineNumber + ', in ' + frame.name);
    1.86 +      var sourceLine = safeGetFileLine(frame.fileName, frame.lineNumber);
    1.87 +      if (sourceLine)
    1.88 +        lines.push('    ' + sourceLine.trim());
    1.89 +    });
    1.90 +
    1.91 +  return lines.join("\n");
    1.92 +};