224 lines
5.6 KiB
JavaScript
224 lines
5.6 KiB
JavaScript
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/*
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xbDebug.js revision: 0.003 2002-02-26
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Contributor(s): Bob Clary, Netscape Communications, Copyright 2001
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Netscape grants you a royalty free license to use, modify and
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distribute this software provided that this copyright notice
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appears on all copies. This software is provided "AS IS,"
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without a warranty of any kind.
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ChangeLog:
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2002-02-25: bclary - modified xbDebugTraceOject to make sure
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that original versions of wrapped functions were not
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rewrapped. This had caused an infinite loop in IE.
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2002-02-07: bclary - modified xbDebug.prototype.close to not null
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the debug window reference. This can cause problems with
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Internet Explorer if the page is refreshed. These issues will
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be addressed at a later date.
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*/
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function xbDebug()
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{
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this.on = false;
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this.stack = new Array();
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this.debugwindow = null;
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this.execprofile = new Object();
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}
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xbDebug.prototype.push = function ()
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{
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this.stack[this.stack.length] = this.on;
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this.on = true;
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}
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xbDebug.prototype.pop = function ()
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{
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this.on = this.stack[this.stack.length - 1];
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--this.stack.length;
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}
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xbDebug.prototype.open = function ()
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{
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if (this.debugwindow && !this.debugwindow.closed)
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this.close();
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this.debugwindow = window.open('about:blank', 'DEBUGWINDOW', 'height=400,width=600,resizable=yes,scrollbars=yes');
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this.debugwindow.title = 'xbDebug Window';
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this.debugwindow.document.write('<html><head><title>xbDebug Window</title></head><body><h3>Javascript Debug Window</h3></body></html>');
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this.debugwindow.focus();
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}
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xbDebug.prototype.close = function ()
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{
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if (!this.debugwindow)
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return;
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if (!this.debugwindow.closed)
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this.debugwindow.close();
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// bc 2002-02-07, other windows may still hold a reference to this: this.debugwindow = null;
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}
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xbDebug.prototype.dump = function (msg)
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{
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if (!this.on)
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return;
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if (!this.debugwindow || this.debugwindow.closed)
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this.open();
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this.debugwindow.document.write(msg + '<br>');
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return;
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}
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var xbDEBUG = new xbDebug();
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window.onunload = function () { xbDEBUG.close(); }
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function xbDebugGetFunctionName(funcref)
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{
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if (funcref.name)
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return funcref.name;
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var name = funcref + '';
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name = name.substring(name.indexOf(' ') + 1, name.indexOf('('));
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funcref.name = name;
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return name;
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}
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function xbDebugCreateFunctionWrapper(scopename, funcname, precall, postcall)
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{
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var wrappedfunc;
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var scopeobject = eval(scopename);
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var funcref = scopeobject[funcname];
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scopeobject['xbDebug_orig_' + funcname] = funcref;
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wrappedfunc = function ()
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{
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precall(scopename, funcname, arguments);
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var rv = funcref.apply(this, arguments);
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postcall(scopename, funcname, arguments, rv);
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return rv;
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};
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if (typeof(funcref.constructor) != 'undefined')
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wrappedfunc.constructor = funcref.constuctor;
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if (typeof(funcref.prototype) != 'undefined')
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wrappedfunc.prototype = funcref.prototype;
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scopeobject[funcname] = wrappedfunc;
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}
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function xbDebugPersistToString(obj)
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{
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var s = '';
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var p;
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if (obj == null)
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return 'null';
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switch(typeof(obj))
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{
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case 'number':
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return obj;
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case 'string':
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return '"' + obj + '"';
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case 'undefined':
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return 'undefined';
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case 'boolean':
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return obj + '';
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}
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return '[' + xbDebugGetFunctionName(obj.constructor) + ']';
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}
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function xbDebugTraceBefore(scopename, funcname, funcarguments)
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{
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var i;
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var s = '';
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var execprofile = xbDEBUG.execprofile[scopename + '.' + funcname];
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if (!execprofile)
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execprofile = xbDEBUG.execprofile[scopename + '.' + funcname] = { started: 0, time: 0, count: 0 };
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for (i = 0; i < funcarguments.length; i++)
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{
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s += xbDebugPersistToString(funcarguments[i]);
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if (i < funcarguments.length - 1)
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s += ', ';
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}
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xbDEBUG.dump('enter ' + scopename + '.' + funcname + '(' + s + ')');
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execprofile.started = (new Date()).getTime();
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}
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function xbDebugTraceAfter(scopename, funcname, funcarguments, rv)
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{
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var i;
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var s = '';
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var execprofile = xbDEBUG.execprofile[scopename + '.' + funcname];
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if (!execprofile)
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xbDEBUG.dump('xbDebugTraceAfter: execprofile not created for ' + scopename + '.' + funcname);
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else if (execprofile.started == 0)
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xbDEBUG.dump('xbDebugTraceAfter: execprofile.started == 0 for ' + scopename + '.' + funcname);
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else
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{
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execprofile.time += (new Date()).getTime() - execprofile.started;
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execprofile.count++;
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execprofile.started = 0;
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}
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for (i = 0; i < funcarguments.length; i++)
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{
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s += xbDebugPersistToString(funcarguments[i]);
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if (i < funcarguments.length - 1)
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s += ', ';
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}
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xbDEBUG.dump('exit ' + scopename + '.' + funcname + '(' + s + ')==' + xbDebugPersistToString(rv));
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}
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function xbDebugTraceFunction(scopename, funcname)
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{
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xbDebugCreateFunctionWrapper(scopename, funcname, xbDebugTraceBefore, xbDebugTraceAfter);
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}
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function xbDebugTraceObject(scopename, objname)
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{
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var objref = eval(scopename + '.' + objname);
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var p;
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if (!objref || !objref.prototype)
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return;
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for (p in objref.prototype)
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{
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if (typeof(objref.prototype[p]) == 'function' && (p+'').indexOf('xbDebug_orig') == -1)
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{
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xbDebugCreateFunctionWrapper(scopename + '.' + objname + '.prototype', p + '', xbDebugTraceBefore, xbDebugTraceAfter);
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}
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}
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}
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function xbDebugDumpProfile()
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{
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var p;
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var execprofile;
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var avg;
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for (p in xbDEBUG.execprofile)
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{
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execprofile = xbDEBUG.execprofile[p];
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avg = Math.round ( 100 * execprofile.time/execprofile.count) /100;
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xbDEBUG.dump('Execution profile ' + p + ' called ' + execprofile.count + ' times. Total time=' + execprofile.time + 'ms. Avg Time=' + avg + 'ms.');
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}
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}
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