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/* 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/. */
this.EXPORTED_SYMBOLS = ['DebugTraceHelper'];
var Cc = Components.classes;
var Ci = Components.interfaces;
var Cr = Components.results;
var Cu = Components.utils;
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
var SPACES = " ";
var BRIGHT_COLORS = {
red: "\x1b[1;31m",
green: "\x1b[1;32m",
yellow: "\x1b[1;33m",
blue: "\x1b[1;34m",
magenta: "\x1b[1;35m",
cyan: "\x1b[1;36m",
white: "\x1b[1;37m",
};
var DARK_COLORS = {
red: "\x1b[0;31m",
green: "\x1b[0;32m",
yellow: "\x1b[0;33m",
blue: "\x1b[0;34m",
magenta: "\x1b[0;35m",
cyan: "\x1b[0;36m",
white: "\x1b[0;37m",
};
var STOP_COLORS = "\x1b[0m";
/**
* Example usages:
*
* Components.utils.import("resource:///modules/traceHelper.js");
* var debugContext = {color: "cyan"};
* DebugTraceHelper.tracify(FolderDisplayWidget.prototype,
* "FolderDisplayWidget", /.+/, debugContext);
* DebugTraceHelper.tracify(MessageDisplayWidget.prototype,
* "MessageDisplayWidget", /.+/, debugContext);
* DebugTraceHelper.tracify(StandaloneFolderDisplayWidget.prototype,
* "StandaloneFolderDisplayWidget", /.+/, debugContext);
* DebugTraceHelper.tracify(StandaloneMessageDisplayWidget.prototype,
* "StandaloneMessageDisplayWidget", /.+/, debugContext);
* DebugTraceHelper.tracify(DBViewWrapper.prototype,
* "DBViewWrapper", /.+/, {color: "green"});
* DebugTraceHelper.tracify(JSTreeSelection.prototype,
* "JSTreeSelection", /.+/, {color: "yellow"});
*/
var DebugTraceHelper = {
tracify: function(aObj, aDesc, aPat, aContext, aSettings) {
aContext.depth = 0;
let color = aSettings.color || "cyan";
aSettings.introCode = BRIGHT_COLORS[color];
aSettings.outroCode = DARK_COLORS[color];
for (let key in aObj) {
if (aPat.test(key)) {
// ignore properties!
if (aObj.__lookupGetter__(key) || aObj.__lookupSetter__(key))
continue;
// ignore non-functions!
if (typeof(aObj[key]) != "function")
continue;
let name = key;
let prev = aObj[name];
aObj[name] = function() {
let argstr = "";
for (let i = 0; i < arguments.length; i++) {
let arg = arguments[i];
if (arg == null)
argstr += " null";
else if (typeof(arg) == "function")
argstr += " function "+ arg.name;
else
argstr += " " + arguments[i].toString();
}
let indent = SPACES.substr(0, aContext.depth++ * 2);
dump(indent + "--> " + aSettings.introCode + aDesc + "::" + name +
":" + argstr +
STOP_COLORS + "\n");
let ret;
try {
ret = prev.apply(this, arguments);
}
catch (ex) {
if (ex.stack) {
dump(BRIGHT_COLORS.red + "Exception: " + ex + "\n " +
ex.stack.replace("\n", "\n ") + STOP_COLORS + "\n");
}
else {
dump(BRIGHT_COLORS.red + "Exception: " + ex.fileName + ":" +
ex.lineNumber + ": " + ex + STOP_COLORS + "\n");
}
aContext.depth--;
dump(indent + "<-- " + aSettings.outroCode + aDesc + "::" + name +
STOP_COLORS + "\n");
throw ex;
}
aContext.depth--;
dump(indent + "<-- " + aSettings.outroCode + aDesc + "::" + name +
": " + (ret != null ? ret.toString() : "null") +
STOP_COLORS + "\n");
return ret;
};
}
}
}
};
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