diff options
Diffstat (limited to 'deps/npm/node_modules/bluebird/js/main/captured_trace.js')
| -rw-r--r-- | deps/npm/node_modules/bluebird/js/main/captured_trace.js | 493 |
1 files changed, 493 insertions, 0 deletions
diff --git a/deps/npm/node_modules/bluebird/js/main/captured_trace.js b/deps/npm/node_modules/bluebird/js/main/captured_trace.js new file mode 100644 index 0000000000..802acd35b0 --- /dev/null +++ b/deps/npm/node_modules/bluebird/js/main/captured_trace.js @@ -0,0 +1,493 @@ +"use strict"; +module.exports = function() { +var async = require("./async.js"); +var util = require("./util.js"); +var bluebirdFramePattern = + /[\\\/]bluebird[\\\/]js[\\\/](main|debug|zalgo|instrumented)/; +var stackFramePattern = null; +var formatStack = null; +var indentStackFrames = false; +var warn; + +function CapturedTrace(parent) { + this._parent = parent; + var length = this._length = 1 + (parent === undefined ? 0 : parent._length); + captureStackTrace(this, CapturedTrace); + if (length > 32) this.uncycle(); +} +util.inherits(CapturedTrace, Error); + +CapturedTrace.prototype.uncycle = function() { + var length = this._length; + if (length < 2) return; + var nodes = []; + var stackToIndex = {}; + + for (var i = 0, node = this; node !== undefined; ++i) { + nodes.push(node); + node = node._parent; + } + length = this._length = i; + for (var i = length - 1; i >= 0; --i) { + var stack = nodes[i].stack; + if (stackToIndex[stack] === undefined) { + stackToIndex[stack] = i; + } + } + for (var i = 0; i < length; ++i) { + var currentStack = nodes[i].stack; + var index = stackToIndex[currentStack]; + if (index !== undefined && index !== i) { + if (index > 0) { + nodes[index - 1]._parent = undefined; + nodes[index - 1]._length = 1; + } + nodes[i]._parent = undefined; + nodes[i]._length = 1; + var cycleEdgeNode = i > 0 ? nodes[i - 1] : this; + + if (index < length - 1) { + cycleEdgeNode._parent = nodes[index + 1]; + cycleEdgeNode._parent.uncycle(); + cycleEdgeNode._length = + cycleEdgeNode._parent._length + 1; + } else { + cycleEdgeNode._parent = undefined; + cycleEdgeNode._length = 1; + } + var currentChildLength = cycleEdgeNode._length + 1; + for (var j = i - 2; j >= 0; --j) { + nodes[j]._length = currentChildLength; + currentChildLength++; + } + return; + } + } +}; + +CapturedTrace.prototype.parent = function() { + return this._parent; +}; + +CapturedTrace.prototype.hasParent = function() { + return this._parent !== undefined; +}; + +CapturedTrace.prototype.attachExtraTrace = function(error) { + if (error.__stackCleaned__) return; + this.uncycle(); + var parsed = CapturedTrace.parseStackAndMessage(error); + var message = parsed.message; + var stacks = [parsed.stack]; + + var trace = this; + while (trace !== undefined) { + stacks.push(cleanStack(trace.stack.split("\n"))); + trace = trace._parent; + } + removeCommonRoots(stacks); + removeDuplicateOrEmptyJumps(stacks); + util.notEnumerableProp(error, "stack", reconstructStack(message, stacks)); + util.notEnumerableProp(error, "__stackCleaned__", true); +}; + +function reconstructStack(message, stacks) { + for (var i = 0; i < stacks.length - 1; ++i) { + stacks[i].push("From previous event:"); + stacks[i] = stacks[i].join("\n"); + } + if (i < stacks.length) { + stacks[i] = stacks[i].join("\n"); + } + return message + "\n" + stacks.join("\n"); +} + +function removeDuplicateOrEmptyJumps(stacks) { + for (var i = 0; i < stacks.length; ++i) { + if (stacks[i].length === 0 || + ((i + 1 < stacks.length) && stacks[i][0] === stacks[i+1][0])) { + stacks.splice(i, 1); + i--; + } + } +} + +function removeCommonRoots(stacks) { + var current = stacks[0]; + for (var i = 1; i < stacks.length; ++i) { + var prev = stacks[i]; + var currentLastIndex = current.length - 1; + var currentLastLine = current[currentLastIndex]; + var commonRootMeetPoint = -1; + + for (var j = prev.length - 1; j >= 0; --j) { + if (prev[j] === currentLastLine) { + commonRootMeetPoint = j; + break; + } + } + + for (var j = commonRootMeetPoint; j >= 0; --j) { + var line = prev[j]; + if (current[currentLastIndex] === line) { + current.pop(); + currentLastIndex--; + } else { + break; + } + } + current = prev; + } +} + +function cleanStack(stack) { + var ret = []; + for (var i = 0; i < stack.length; ++i) { + var line = stack[i]; + var isTraceLine = stackFramePattern.test(line) || + " (No stack trace)" === line; + var isInternalFrame = isTraceLine && shouldIgnore(line); + if (isTraceLine && !isInternalFrame) { + if (indentStackFrames && line.charAt(0) !== " ") { + line = " " + line; + } + ret.push(line); + } + } + return ret; +} + +function stackFramesAsArray(error) { + var stack = error.stack.replace(/\s+$/g, "").split("\n"); + for (var i = 0; i < stack.length; ++i) { + var line = stack[i]; + if (" (No stack trace)" === line || stackFramePattern.test(line)) { + break; + } + } + if (i > 0) { + stack = stack.slice(i); + } + return stack; +} + +CapturedTrace.parseStackAndMessage = function(error) { + var stack = error.stack; + var message = error.toString(); + stack = typeof stack === "string" && stack.length > 0 + ? stackFramesAsArray(error) : [" (No stack trace)"]; + return { + message: message, + stack: cleanStack(stack) + }; +}; + +CapturedTrace.formatAndLogError = function(error, title) { + if (typeof console !== "undefined") { + var message; + if (typeof error === "object" || typeof error === "function") { + var stack = error.stack; + message = title + formatStack(stack, error); + } else { + message = title + String(error); + } + if (typeof warn === "function") { + warn(message); + } else if (typeof console.log === "function" || + typeof console.log === "object") { + console.log(message); + } + } +}; + +CapturedTrace.unhandledRejection = function (reason) { + CapturedTrace.formatAndLogError(reason, "^--- With additional stack trace: "); +}; + +CapturedTrace.isSupported = function () { + return typeof captureStackTrace === "function"; +}; + +CapturedTrace.fireRejectionEvent = +function(name, localHandler, reason, promise) { + var localEventFired = false; + try { + if (typeof localHandler === "function") { + localEventFired = true; + if (name === "rejectionHandled") { + localHandler(promise); + } else { + localHandler(reason, promise); + } + } + } catch (e) { + async.throwLater(e); + } + + var globalEventFired = false; + try { + globalEventFired = fireGlobalEvent(name, reason, promise); + } catch (e) { + globalEventFired = true; + async.throwLater(e); + } + + var domEventFired = false; + if (fireDomEvent) { + try { + domEventFired = fireDomEvent(name.toLowerCase(), { + reason: reason, + promise: promise + }); + } catch (e) { + domEventFired = true; + async.throwLater(e); + } + } + + if (!globalEventFired && !localEventFired && !domEventFired && + name === "unhandledRejection") { + CapturedTrace.formatAndLogError(reason, "Unhandled rejection "); + } +}; + +function formatNonError(obj) { + var str; + if (typeof obj === "function") { + str = "[function " + + (obj.name || "anonymous") + + "]"; + } else { + str = obj.toString(); + var ruselessToString = /\[object [a-zA-Z0-9$_]+\]/; + if (ruselessToString.test(str)) { + try { + var newStr = JSON.stringify(obj); + str = newStr; + } + catch(e) { + + } + } + if (str.length === 0) { + str = "(empty array)"; + } + } + return ("(<" + snip(str) + ">, no stack trace)"); +} + +function snip(str) { + var maxChars = 41; + if (str.length < maxChars) { + return str; + } + return str.substr(0, maxChars - 3) + "..."; +} + +var shouldIgnore = function() { return false; }; +var parseLineInfoRegex = /[\/<\(]([^:\/]+):(\d+):(?:\d+)\)?\s*$/; +function parseLineInfo(line) { + var matches = line.match(parseLineInfoRegex); + if (matches) { + return { + fileName: matches[1], + line: parseInt(matches[2], 10) + }; + } +} +CapturedTrace.setBounds = function(firstLineError, lastLineError) { + if (!CapturedTrace.isSupported()) return; + var firstStackLines = firstLineError.stack.split("\n"); + var lastStackLines = lastLineError.stack.split("\n"); + var firstIndex = -1; + var lastIndex = -1; + var firstFileName; + var lastFileName; + for (var i = 0; i < firstStackLines.length; ++i) { + var result = parseLineInfo(firstStackLines[i]); + if (result) { + firstFileName = result.fileName; + firstIndex = result.line; + break; + } + } + for (var i = 0; i < lastStackLines.length; ++i) { + var result = parseLineInfo(lastStackLines[i]); + if (result) { + lastFileName = result.fileName; + lastIndex = result.line; + break; + } + } + if (firstIndex < 0 || lastIndex < 0 || !firstFileName || !lastFileName || + firstFileName !== lastFileName || firstIndex >= lastIndex) { + return; + } + + shouldIgnore = function(line) { + if (bluebirdFramePattern.test(line)) return true; + var info = parseLineInfo(line); + if (info) { + if (info.fileName === firstFileName && + (firstIndex <= info.line && info.line <= lastIndex)) { + return true; + } + } + return false; + }; +}; + +var captureStackTrace = (function stackDetection() { + var v8stackFramePattern = /^\s*at\s*/; + var v8stackFormatter = function(stack, error) { + if (typeof stack === "string") return stack; + + if (error.name !== undefined && + error.message !== undefined) { + return error.toString(); + } + return formatNonError(error); + }; + + if (typeof Error.stackTraceLimit === "number" && + typeof Error.captureStackTrace === "function") { + Error.stackTraceLimit = Error.stackTraceLimit + 6; + stackFramePattern = v8stackFramePattern; + formatStack = v8stackFormatter; + var captureStackTrace = Error.captureStackTrace; + + shouldIgnore = function(line) { + return bluebirdFramePattern.test(line); + }; + return function(receiver, ignoreUntil) { + Error.stackTraceLimit = Error.stackTraceLimit + 6; + captureStackTrace(receiver, ignoreUntil); + Error.stackTraceLimit = Error.stackTraceLimit - 6; + }; + } + var err = new Error(); + + if (typeof err.stack === "string" && + err.stack.split("\n")[0].indexOf("stackDetection@") >= 0) { + stackFramePattern = /@/; + formatStack = v8stackFormatter; + indentStackFrames = true; + return function captureStackTrace(o) { + o.stack = new Error().stack; + }; + } + + var hasStackAfterThrow; + try { throw new Error(); } + catch(e) { + hasStackAfterThrow = ("stack" in e); + } + if (!("stack" in err) && hasStackAfterThrow && + typeof Error.stackTraceLimit === "number") { + stackFramePattern = v8stackFramePattern; + formatStack = v8stackFormatter; + return function captureStackTrace(o) { + Error.stackTraceLimit = Error.stackTraceLimit + 6; + try { throw new Error(); } + catch(e) { o.stack = e.stack; } + Error.stackTraceLimit = Error.stackTraceLimit - 6; + }; + } + + formatStack = function(stack, error) { + if (typeof stack === "string") return stack; + + if ((typeof error === "object" || + typeof error === "function") && + error.name !== undefined && + error.message !== undefined) { + return error.toString(); + } + return formatNonError(error); + }; + + return null; + +})([]); + +var fireDomEvent; +var fireGlobalEvent = (function() { + if (util.isNode) { + return function(name, reason, promise) { + if (name === "rejectionHandled") { + return process.emit(name, promise); + } else { + return process.emit(name, reason, promise); + } + }; + } else { + var customEventWorks = false; + var anyEventWorks = true; + try { + var ev = new self.CustomEvent("test"); + customEventWorks = ev instanceof CustomEvent; + } catch (e) {} + if (!customEventWorks) { + try { + var event = document.createEvent("CustomEvent"); + event.initCustomEvent("testingtheevent", false, true, {}); + self.dispatchEvent(event); + } catch (e) { + anyEventWorks = false; + } + } + if (anyEventWorks) { + fireDomEvent = function(type, detail) { + var event; + if (customEventWorks) { + event = new self.CustomEvent(type, { + detail: detail, + bubbles: false, + cancelable: true + }); + } else if (self.dispatchEvent) { + event = document.createEvent("CustomEvent"); + event.initCustomEvent(type, false, true, detail); + } + + return event ? !self.dispatchEvent(event) : false; + }; + } + + var toWindowMethodNameMap = {}; + toWindowMethodNameMap["unhandledRejection"] = ("on" + + "unhandledRejection").toLowerCase(); + toWindowMethodNameMap["rejectionHandled"] = ("on" + + "rejectionHandled").toLowerCase(); + + return function(name, reason, promise) { + var methodName = toWindowMethodNameMap[name]; + var method = self[methodName]; + if (!method) return false; + if (name === "rejectionHandled") { + method.call(self, promise); + } else { + method.call(self, reason, promise); + } + return true; + }; + } +})(); + +if (typeof console !== "undefined" && typeof console.warn !== "undefined") { + warn = function (message) { + console.warn(message); + }; + if (util.isNode && process.stderr.isTTY) { + warn = function(message) { + process.stderr.write("\u001b[31m" + message + "\u001b[39m\n"); + }; + } else if (!util.isNode && typeof (new Error().stack) === "string") { + warn = function(message) { + console.warn("%c" + message, "color: red"); + }; + } +} + +return CapturedTrace; +}; |