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Diffstat (limited to 'ecomp-sdk-app/src/main/webapp/static/fusion/raptor/dy3/js/stacktrace.js')
| -rw-r--r-- | ecomp-sdk-app/src/main/webapp/static/fusion/raptor/dy3/js/stacktrace.js | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/ecomp-sdk-app/src/main/webapp/static/fusion/raptor/dy3/js/stacktrace.js b/ecomp-sdk-app/src/main/webapp/static/fusion/raptor/dy3/js/stacktrace.js new file mode 100644 index 000000000..4d0384d18 --- /dev/null +++ b/ecomp-sdk-app/src/main/webapp/static/fusion/raptor/dy3/js/stacktrace.js @@ -0,0 +1,411 @@ +// Domain Public by Eric Wendelin http://eriwen.com/ (2008) +// Luke Smith http://lucassmith.name/ (2008) +// Loic Dachary <loic@dachary.org> (2008) +// Johan Euphrosine <proppy@aminche.com> (2008) +// Oyvind Sean Kinsey http://kinsey.no/blog (2010) +// Victor Homyakov <victor-homyakov@users.sourceforge.net> (2010) + +/** + * Main function giving a function stack trace with a forced or passed in Error + * + * @cfg {Error} e The error to create a stacktrace from (optional) + * @cfg {Boolean} guess If we should try to resolve the names of anonymous functions + * @return {Array} of Strings with functions, lines, files, and arguments where possible + */ +function printStackTrace(options) { + options = options || {guess: true}; + var ex = options.e || null, guess = !!options.guess; + var p = new printStackTrace.implementation(), result = p.run(ex); + return (guess) ? p.guessAnonymousFunctions(result) : result; +} + +printStackTrace.implementation = function() { +}; + +printStackTrace.implementation.prototype = { + /** + * @param {Error} ex The error to create a stacktrace from (optional) + * @param {String} mode Forced mode (optional, mostly for unit tests) + */ + run: function(ex, mode) { + ex = ex || this.createException(); + // examine exception properties w/o debugger + //for (var prop in ex) {alert("Ex['" + prop + "']=" + ex[prop]);} + mode = mode || this.mode(ex); + if (mode === 'other') { + return this.other(arguments.callee); + } else { + return this[mode](ex); + } + }, + + createException: function() { + try { + this.undef(); + } catch (e) { + return e; + } + }, + + /** + * Mode could differ for different exception, e.g. + * exceptions in Chrome may or may not have arguments or stack. + * + * @return {String} mode of operation for the exception + */ + mode: function(e) { + if (e['arguments'] && e.stack) { + return 'chrome'; + } else if (typeof e.message === 'string' && typeof window !== 'undefined' && window.opera) { + // e.message.indexOf("Backtrace:") > -1 -> opera + // !e.stacktrace -> opera + if (!e.stacktrace) { + return 'opera9'; // use e.message + } + // 'opera#sourceloc' in e -> opera9, opera10a + if (e.message.indexOf('\n') > -1 && e.message.split('\n').length > e.stacktrace.split('\n').length) { + return 'opera9'; // use e.message + } + // e.stacktrace && !e.stack -> opera10a + if (!e.stack) { + return 'opera10a'; // use e.stacktrace + } + // e.stacktrace && e.stack -> opera10b + if (e.stacktrace.indexOf("called from line") < 0) { + return 'opera10b'; // use e.stacktrace, format differs from 'opera10a' + } + // e.stacktrace && e.stack -> opera11 + return 'opera11'; // use e.stacktrace, format differs from 'opera10a', 'opera10b' + } else if (e.stack) { + return 'firefox'; + } + return 'other'; + }, + + /** + * Given a context, function name, and callback function, overwrite it so that it calls + * printStackTrace() first with a callback and then runs the rest of the body. + * + * @param {Object} context of execution (e.g. window) + * @param {String} functionName to instrument + * @param {Function} function to call with a stack trace on invocation + */ + instrumentFunction: function(context, functionName, callback) { + context = context || window; + var original = context[functionName]; + context[functionName] = function instrumented() { + callback.call(this, printStackTrace().slice(4)); + return context[functionName]._instrumented.apply(this, arguments); + }; + context[functionName]._instrumented = original; + }, + + /** + * Given a context and function name of a function that has been + * instrumented, revert the function to it's original (non-instrumented) + * state. + * + * @param {Object} context of execution (e.g. window) + * @param {String} functionName to de-instrument + */ + deinstrumentFunction: function(context, functionName) { + if (context[functionName].constructor === Function && + context[functionName]._instrumented && + context[functionName]._instrumented.constructor === Function) { + context[functionName] = context[functionName]._instrumented; + } + }, + + /** + * Given an Error object, return a formatted Array based on Chrome's stack string. + * + * @param e - Error object to inspect + * @return Array<String> of function calls, files and line numbers + */ + chrome: function(e) { + var stack = (e.stack + '\n').replace(/^\S[^\(]+?[\n$]/gm, ''). + replace(/^\s+at\s+/gm, ''). + replace(/^([^\(]+?)([\n$])/gm, '{anonymous}()@$1$2'). + replace(/^Object.<anonymous>\s*\(([^\)]+)\)/gm, '{anonymous}()@$1').split('\n'); + stack.pop(); + return stack; + }, + + /** + * Given an Error object, return a formatted Array based on Firefox's stack string. + * + * @param e - Error object to inspect + * @return Array<String> of function calls, files and line numbers + */ + firefox: function(e) { + return e.stack.replace(/(?:\n@:0)?\s+$/m, '').replace(/^\(/gm, '{anonymous}(').split('\n'); + }, + + opera11: function(e) { + // "Error thrown at line 42, column 12 in <anonymous function>() in file://localhost/G:/js/stacktrace.js:\n" + // "Error thrown at line 42, column 12 in <anonymous function: createException>() in file://localhost/G:/js/stacktrace.js:\n" + // "called from line 7, column 4 in bar(n) in file://localhost/G:/js/test/functional/testcase1.html:\n" + // "called from line 15, column 3 in file://localhost/G:/js/test/functional/testcase1.html:\n" + var ANON = '{anonymous}', lineRE = /^.*line (\d+), column (\d+)(?: in (.+))? in (\S+):$/; + var lines = e.stacktrace.split('\n'), result = []; + + for (var i = 0, len = lines.length; i < len; i += 2) { + var match = lineRE.exec(lines[i]); + if (match) { + var location = match[4] + ':' + match[1] + ':' + match[2]; + var fnName = match[3] || "global code"; + fnName = fnName.replace(/<anonymous function: (\S+)>/, "$1").replace(/<anonymous function>/, ANON); + result.push(fnName + '@' + location + ' -- ' + lines[i + 1].replace(/^\s+/, '')); + } + } + + return result; + }, + + opera10b: function(e) { + // "<anonymous function: run>([arguments not available])@file://localhost/G:/js/stacktrace.js:27\n" + + // "printStackTrace([arguments not available])@file://localhost/G:/js/stacktrace.js:18\n" + + // "@file://localhost/G:/js/test/functional/testcase1.html:15" + var ANON = '{anonymous}', lineRE = /^(.*)@(.+):(\d+)$/; + var lines = e.stacktrace.split('\n'), result = []; + + for (var i = 0, len = lines.length; i < len; i++) { + var match = lineRE.exec(lines[i]); + if (match) { + var fnName = match[1]? (match[1] + '()') : "global code"; + result.push(fnName + '@' + match[2] + ':' + match[3]); + } + } + + return result; + }, + + /** + * Given an Error object, return a formatted Array based on Opera 10's stacktrace string. + * + * @param e - Error object to inspect + * @return Array<String> of function calls, files and line numbers + */ + opera10a: function(e) { + // " Line 27 of linked script file://localhost/G:/js/stacktrace.js\n" + // " Line 11 of inline#1 script in file://localhost/G:/js/test/functional/testcase1.html: In function foo\n" + var ANON = '{anonymous}', lineRE = /Line (\d+).*script (?:in )?(\S+)(?:: In function (\S+))?$/i; + var lines = e.stacktrace.split('\n'), result = []; + + for (var i = 0, len = lines.length; i < len; i += 2) { + var match = lineRE.exec(lines[i]); + if (match) { + var fnName = match[3] || ANON; + result.push(fnName + '()@' + match[2] + ':' + match[1] + ' -- ' + lines[i + 1].replace(/^\s+/, '')); + } + } + + return result; + }, + + // Opera 7.x-9.2x only! + opera9: function(e) { + // " Line 43 of linked script file://localhost/G:/js/stacktrace.js\n" + // " Line 7 of inline#1 script in file://localhost/G:/js/test/functional/testcase1.html\n" + var ANON = '{anonymous}', lineRE = /Line (\d+).*script (?:in )?(\S+)/i; + var lines = e.message.split('\n'), result = []; + + for (var i = 2, len = lines.length; i < len; i += 2) { + var match = lineRE.exec(lines[i]); + if (match) { + result.push(ANON + '()@' + match[2] + ':' + match[1] + ' -- ' + lines[i + 1].replace(/^\s+/, '')); + } + } + + return result; + }, + + // Safari, IE, and others + other: function(curr) { + var ANON = '{anonymous}', fnRE = /function\s*([\w\-$]+)?\s*\(/i, stack = [], fn, args, maxStackSize = 10; + while (curr && stack.length < maxStackSize) { + fn = fnRE.test(curr.toString()) ? RegExp.$1 || ANON : ANON; + args = Array.prototype.slice.call(curr['arguments'] || []); + stack[stack.length] = fn + '(' + this.stringifyArguments(args) + ')'; + curr = curr.caller; + } + return stack; + }, + + /** + * Given arguments array as a String, subsituting type names for non-string types. + * + * @param {Arguments} object + * @return {Array} of Strings with stringified arguments + */ + stringifyArguments: function(args) { + var result = []; + var slice = Array.prototype.slice; + for (var i = 0; i < args.length; ++i) { + var arg = args[i]; + if (arg === undefined) { + result[i] = 'undefined'; + } else if (arg === null) { + result[i] = 'null'; + } else if (arg.constructor) { + if (arg.constructor === Array) { + if (arg.length < 3) { + result[i] = '[' + this.stringifyArguments(arg) + ']'; + } else { + result[i] = '[' + this.stringifyArguments(slice.call(arg, 0, 1)) + '...' + this.stringifyArguments(slice.call(arg, -1)) + ']'; + } + } else if (arg.constructor === Object) { + result[i] = '#object'; + } else if (arg.constructor === Function) { + result[i] = '#function'; + } else if (arg.constructor === String) { + result[i] = '"' + arg + '"'; + } else if (arg.constructor === Number) { + result[i] = arg; + } + } + } + return result.join(','); + }, + + sourceCache: {}, + + /** + * @return the text from a given URL + */ + ajax: function(url) { + var req = this.createXMLHTTPObject(); + if (req) { + try { + req.open('GET', url, false); + req.send(null); + return req.responseText; + } catch (e) { + } + } + return ''; + }, + + /** + * Try XHR methods in order and store XHR factory. + * + * @return <Function> XHR function or equivalent + */ + createXMLHTTPObject: function() { + var xmlhttp, XMLHttpFactories = [ + function() { + return new XMLHttpRequest(); + }, function() { + return new ActiveXObject('Msxml2.XMLHTTP'); + }, function() { + return new ActiveXObject('Msxml3.XMLHTTP'); + }, function() { + return new ActiveXObject('Microsoft.XMLHTTP'); + } + ]; + for (var i = 0; i < XMLHttpFactories.length; i++) { + try { + xmlhttp = XMLHttpFactories[i](); + // Use memoization to cache the factory + this.createXMLHTTPObject = XMLHttpFactories[i]; + return xmlhttp; + } catch (e) { + } + } + }, + + /** + * Given a URL, check if it is in the same domain (so we can get the source + * via Ajax). + * + * @param url <String> source url + * @return False if we need a cross-domain request + */ + isSameDomain: function(url) { + return url.indexOf(location.hostname) !== -1; + }, + + /** + * Get source code from given URL if in the same domain. + * + * @param url <String> JS source URL + * @return <Array> Array of source code lines + */ + getSource: function(url) { + // TODO reuse source from script tags? + if (!(url in this.sourceCache)) { + this.sourceCache[url] = this.ajax(url).split('\n'); + } + return this.sourceCache[url]; + }, + + guessAnonymousFunctions: function(stack) { + for (var i = 0; i < stack.length; ++i) { + var reStack = /\{anonymous\}\(.*\)@(.*)/, + reRef = /^(.*?)(?::(\d+))(?::(\d+))?(?: -- .+)?$/, + frame = stack[i], ref = reStack.exec(frame); + + if (ref) { + var m = reRef.exec(ref[1]), file = m[1], + lineno = m[2], charno = m[3] || 0; + if (file && this.isSameDomain(file) && lineno) { + var functionName = this.guessAnonymousFunction(file, lineno, charno); + stack[i] = frame.replace('{anonymous}', functionName); + } + } + } + return stack; + }, + + guessAnonymousFunction: function(url, lineNo, charNo) { + var ret; + try { + ret = this.findFunctionName(this.getSource(url), lineNo); + } catch (e) { + ret = 'getSource failed with url: ' + url + ', exception: ' + e.toString(); + } + return ret; + }, + + findFunctionName: function(source, lineNo) { + // FIXME findFunctionName fails for compressed source + // (more than one function on the same line) + // TODO use captured args + // function {name}({args}) m[1]=name m[2]=args + var reFunctionDeclaration = /function\s+([^(]*?)\s*\(([^)]*)\)/; + // {name} = function ({args}) TODO args capture + // /['"]?([0-9A-Za-z_]+)['"]?\s*[:=]\s*function(?:[^(]*)/ + var reFunctionExpression = /['"]?([0-9A-Za-z_]+)['"]?\s*[:=]\s*function\b/; + // {name} = eval() + var reFunctionEvaluation = /['"]?([0-9A-Za-z_]+)['"]?\s*[:=]\s*(?:eval|new Function)\b/; + // Walk backwards in the source lines until we find + // the line which matches one of the patterns above + var code = "", line, maxLines = Math.min(lineNo, 20), m, commentPos; + for (var i = 0; i < maxLines; ++i) { + // lineNo is 1-based, source[] is 0-based + line = source[lineNo - i - 1]; + commentPos = line.indexOf('//'); + if (commentPos >= 0) { + line = line.substr(0, commentPos); + } + // TODO check other types of comments? Commented code may lead to false positive + if (line) { + code = line + code; + m = reFunctionExpression.exec(code); + if (m && m[1]) { + return m[1]; + } + m = reFunctionDeclaration.exec(code); + if (m && m[1]) { + //return m[1] + "(" + (m[2] || "") + ")"; + return m[1]; + } + m = reFunctionEvaluation.exec(code); + if (m && m[1]) { + return m[1]; + } + } + } + return '(?)'; + } +}; |