diff --git a/error-stack-parser.js b/error-stack-parser.js index 9de504a..270d4ab 100644 --- a/error-stack-parser.js +++ b/error-stack-parser.js @@ -17,186 +17,188 @@ var CHROME_IE_STACK_REGEXP = /^\s*at .*(\S+:\d+|\(native\))/m; var SAFARI_NATIVE_CODE_REGEXP = /^(eval@)?(\[native code])?$/; - return { - /** - * Given an Error object, extract the most information from it. - * - * @param {Error} error object - * @return {Array} of StackFrames - */ - parse: function ErrorStackParser$$parse(error) { - if (typeof error.stacktrace !== 'undefined' || typeof error['opera#sourceloc'] !== 'undefined') { - return this.parseOpera(error); - } else if (error.stack && error.stack.match(CHROME_IE_STACK_REGEXP)) { - return this.parseV8OrIE(error); - } else if (error.stack) { - return this.parseFFOrSafari(error); - } else { - throw new Error('Cannot parse given Error object'); - } - }, - - // Separate line and column numbers from a string of the form: (URI:Line:Column) - extractLocation: function ErrorStackParser$$extractLocation(urlLike) { - // Fail-fast but return locations like "(native)" - if (urlLike.indexOf(':') === -1) { - return [urlLike]; - } - - var regExp = /(.+?)(?::(\d+))?(?::(\d+))?$/; - var parts = regExp.exec(urlLike.replace(/[()]/g, '')); - return [parts[1], parts[2] || undefined, parts[3] || undefined]; - }, + var errorStackParser = {} + + /** + * Given an Error object, extract the most information from it. + * + * @param {Error} error object + * @return {Array} of StackFrames + */ + errorStackParser.parse = function ErrorStackParser$$parse(error) { + if (typeof error.stacktrace !== 'undefined' || typeof error['opera#sourceloc'] !== 'undefined') { + return this.parseOpera(error); + } else if (error.stack && error.stack.match(CHROME_IE_STACK_REGEXP)) { + return this.parseV8OrIE(error); + } else if (error.stack) { + return this.parseFFOrSafari(error); + } else { + throw new Error('Cannot parse given Error object'); + } + }.bind(errorStackParser), - parseV8OrIE: function ErrorStackParser$$parseV8OrIE(error) { - var filtered = error.stack.split('\n').filter(function(line) { - return !!line.match(CHROME_IE_STACK_REGEXP); - }, this); + // Separate line and column numbers from a string of the form: (URI:Line:Column) + errorStackParser.extractLocation = function ErrorStackParser$$extractLocation(urlLike) { + // Fail-fast but return locations like "(native)" + if (urlLike.indexOf(':') === -1) { + return [urlLike]; + } - return filtered.map(function(line) { - if (line.indexOf('(eval ') > -1) { - // Throw away eval information until we implement stacktrace.js/stackframe#8 - line = line.replace(/eval code/g, 'eval').replace(/(\(eval at [^()]*)|(\),.*$)/g, ''); - } - var sanitizedLine = line.replace(/^\s+/, '').replace(/\(eval code/g, '('); + var regExp = /(.+?)(?::(\d+))?(?::(\d+))?$/; + var parts = regExp.exec(urlLike.replace(/[()]/g, '')); + return [parts[1], parts[2] || undefined, parts[3] || undefined]; + }.bind(errorStackParser); - // capture and preseve the parenthesized location "(/foo/my bar.js:12:87)" in - // case it has spaces in it, as the string is split on \s+ later on - var location = sanitizedLine.match(/ (\((.+):(\d+):(\d+)\)$)/); + errorStackParser.parseV8OrIE = function ErrorStackParser$$parseV8OrIE(error) { + var filtered = error.stack.split('\n').filter(function(line) { + return !!line.match(CHROME_IE_STACK_REGEXP); + }, this); - // remove the parenthesized location from the line, if it was matched - sanitizedLine = location ? sanitizedLine.replace(location[0], '') : sanitizedLine; + return filtered.map(function(line) { + if (line.indexOf('(eval ') > -1) { + // Throw away eval information until we implement stacktrace.js/stackframe#8 + line = line.replace(/eval code/g, 'eval').replace(/(\(eval at [^()]*)|(\),.*$)/g, ''); + } + var sanitizedLine = line.replace(/^\s+/, '').replace(/\(eval code/g, '('); + + // capture and preseve the parenthesized location "(/foo/my bar.js:12:87)" in + // case it has spaces in it, as the string is split on \s+ later on + var location = sanitizedLine.match(/ (\((.+):(\d+):(\d+)\)$)/); + + // remove the parenthesized location from the line, if it was matched + sanitizedLine = location ? sanitizedLine.replace(location[0], '') : sanitizedLine; + + var tokens = sanitizedLine.split(/\s+/).slice(1); + // if a location was matched, pass it to extractLocation() otherwise pop the last token + var locationParts = this.extractLocation(location ? location[1] : tokens.pop()); + var functionName = tokens.join(' ') || undefined; + var fileName = ['eval', ''].indexOf(locationParts[0]) > -1 ? undefined : locationParts[0]; + + return new StackFrame({ + functionName: functionName, + fileName: fileName, + lineNumber: locationParts[1], + columnNumber: locationParts[2], + source: line + }); + }, this); + }.bind(errorStackParser); + + errorStackParser.parseFFOrSafari = function ErrorStackParser$$parseFFOrSafari(error) { + var filtered = error.stack.split('\n').filter(function(line) { + return !line.match(SAFARI_NATIVE_CODE_REGEXP); + }, this); + + return filtered.map(function(line) { + // Throw away eval information until we implement stacktrace.js/stackframe#8 + if (line.indexOf(' > eval') > -1) { + line = line.replace(/ line (\d+)(?: > eval line \d+)* > eval:\d+:\d+/g, ':$1'); + } - var tokens = sanitizedLine.split(/\s+/).slice(1); - // if a location was matched, pass it to extractLocation() otherwise pop the last token - var locationParts = this.extractLocation(location ? location[1] : tokens.pop()); - var functionName = tokens.join(' ') || undefined; - var fileName = ['eval', ''].indexOf(locationParts[0]) > -1 ? undefined : locationParts[0]; + if (line.indexOf('@') === -1 && line.indexOf(':') === -1) { + // Safari eval frames only have function names and nothing else + return new StackFrame({ + functionName: line + }); + } else { + var functionNameRegex = /((.*".+"[^@]*)?[^@]*)(?:@)/; + var matches = line.match(functionNameRegex); + var functionName = matches && matches[1] ? matches[1] : undefined; + var locationParts = this.extractLocation(line.replace(functionNameRegex, '')); return new StackFrame({ functionName: functionName, - fileName: fileName, + fileName: locationParts[0], lineNumber: locationParts[1], columnNumber: locationParts[2], source: line }); - }, this); - }, - - parseFFOrSafari: function ErrorStackParser$$parseFFOrSafari(error) { - var filtered = error.stack.split('\n').filter(function(line) { - return !line.match(SAFARI_NATIVE_CODE_REGEXP); - }, this); - - return filtered.map(function(line) { - // Throw away eval information until we implement stacktrace.js/stackframe#8 - if (line.indexOf(' > eval') > -1) { - line = line.replace(/ line (\d+)(?: > eval line \d+)* > eval:\d+:\d+/g, ':$1'); - } - - if (line.indexOf('@') === -1 && line.indexOf(':') === -1) { - // Safari eval frames only have function names and nothing else - return new StackFrame({ - functionName: line - }); - } else { - var functionNameRegex = /((.*".+"[^@]*)?[^@]*)(?:@)/; - var matches = line.match(functionNameRegex); - var functionName = matches && matches[1] ? matches[1] : undefined; - var locationParts = this.extractLocation(line.replace(functionNameRegex, '')); - - return new StackFrame({ - functionName: functionName, - fileName: locationParts[0], - lineNumber: locationParts[1], - columnNumber: locationParts[2], - source: line - }); - } - }, this); - }, - - parseOpera: function ErrorStackParser$$parseOpera(e) { - if (!e.stacktrace || (e.message.indexOf('\n') > -1 && - e.message.split('\n').length > e.stacktrace.split('\n').length)) { - return this.parseOpera9(e); - } else if (!e.stack) { - return this.parseOpera10(e); - } else { - return this.parseOpera11(e); } - }, + }, this); + }.bind(errorStackParser); + + errorStackParser.parseOpera = function ErrorStackParser$$parseOpera(e) { + if (!e.stacktrace || (e.message.indexOf('\n') > -1 && + e.message.split('\n').length > e.stacktrace.split('\n').length)) { + return this.parseOpera9(e); + } else if (!e.stack) { + return this.parseOpera10(e); + } else { + return this.parseOpera11(e); + } + }.bind(errorStackParser); + + errorStackParser.parseOpera9 = function ErrorStackParser$$parseOpera9(e) { + var lineRE = /Line (\d+).*script (?:in )?(\S+)/i; + var lines = e.message.split('\n'); + var result = []; + + for (var i = 2, len = lines.length; i < len; i += 2) { + var match = lineRE.exec(lines[i]); + if (match) { + result.push(new StackFrame({ + fileName: match[2], + lineNumber: match[1], + source: lines[i] + })); + } + } - parseOpera9: function ErrorStackParser$$parseOpera9(e) { - var lineRE = /Line (\d+).*script (?:in )?(\S+)/i; - var lines = e.message.split('\n'); - var result = []; + return result; + }.bind(errorStackParser); - for (var i = 2, len = lines.length; i < len; i += 2) { - var match = lineRE.exec(lines[i]); - if (match) { - result.push(new StackFrame({ + errorStackParser.parseOpera10 = function ErrorStackParser$$parseOpera10(e) { + var lineRE = /Line (\d+).*script (?:in )?(\S+)(?:: In function (\S+))?$/i; + var lines = e.stacktrace.split('\n'); + var result = []; + + for (var i = 0, len = lines.length; i < len; i += 2) { + var match = lineRE.exec(lines[i]); + if (match) { + result.push( + new StackFrame({ + functionName: match[3] || undefined, fileName: match[2], lineNumber: match[1], source: lines[i] - })); - } + }) + ); } + } - return result; - }, - - parseOpera10: function ErrorStackParser$$parseOpera10(e) { - var lineRE = /Line (\d+).*script (?:in )?(\S+)(?:: In function (\S+))?$/i; - var lines = e.stacktrace.split('\n'); - var result = []; - - for (var i = 0, len = lines.length; i < len; i += 2) { - var match = lineRE.exec(lines[i]); - if (match) { - result.push( - new StackFrame({ - functionName: match[3] || undefined, - fileName: match[2], - lineNumber: match[1], - source: lines[i] - }) - ); - } + return result; + }.bind(errorStackParser); + + // Opera 10.65+ Error.stack very similar to FF/Safari + errorStackParser.parseOpera11 = function ErrorStackParser$$parseOpera11(error) { + var filtered = error.stack.split('\n').filter(function(line) { + return !!line.match(FIREFOX_SAFARI_STACK_REGEXP) && !line.match(/^Error created at/); + }, this); + + return filtered.map(function(line) { + var tokens = line.split('@'); + var locationParts = this.extractLocation(tokens.pop()); + var functionCall = (tokens.shift() || ''); + var functionName = functionCall + .replace(//, '$2') + .replace(/\([^)]*\)/g, '') || undefined; + var argsRaw; + if (functionCall.match(/\(([^)]*)\)/)) { + argsRaw = functionCall.replace(/^[^(]+\(([^)]*)\)$/, '$1'); } - - return result; - }, - - // Opera 10.65+ Error.stack very similar to FF/Safari - parseOpera11: function ErrorStackParser$$parseOpera11(error) { - var filtered = error.stack.split('\n').filter(function(line) { - return !!line.match(FIREFOX_SAFARI_STACK_REGEXP) && !line.match(/^Error created at/); - }, this); - - return filtered.map(function(line) { - var tokens = line.split('@'); - var locationParts = this.extractLocation(tokens.pop()); - var functionCall = (tokens.shift() || ''); - var functionName = functionCall - .replace(//, '$2') - .replace(/\([^)]*\)/g, '') || undefined; - var argsRaw; - if (functionCall.match(/\(([^)]*)\)/)) { - argsRaw = functionCall.replace(/^[^(]+\(([^)]*)\)$/, '$1'); - } - var args = (argsRaw === undefined || argsRaw === '[arguments not available]') ? - undefined : argsRaw.split(','); - - return new StackFrame({ - functionName: functionName, - args: args, - fileName: locationParts[0], - lineNumber: locationParts[1], - columnNumber: locationParts[2], - source: line - }); - }, this); - } - }; + var args = (argsRaw === undefined || argsRaw === '[arguments not available]') ? + undefined : argsRaw.split(','); + + return new StackFrame({ + functionName: functionName, + args: args, + fileName: locationParts[0], + lineNumber: locationParts[1], + columnNumber: locationParts[2], + source: line + }); + }, this); + }.bind(errorStackParser); + + return errorStackParser }));