tracelineParser.js

module.exports = {
    chrome: function(line) {
        var m = line.match(CHROME_STACK_LINE);
        if (m) {
            var file = m[9] || m[18] || m[26]
            var fn = m[4] || m[7] || m[14] || m[23]
            var lineNumber = m[11] || m[20]
            var column = m[13] || m[22]
        } else {
            //throw new Error("Couldn't parse exception line: "+line)
        }
        
        return {
            file: file,
            function: fn,
            line: lineNumber,
            column: column
        }
    },
    
    firefox: function(line) {
        var m = line.match(FIREFOX_STACK_LINE);
        if (m) {
            var file = m[8]
            var fn = m[1]
            var lineNumber = m[10]
            var column = m[12]
        }
        
        return {
            file: file,
            function: fn,
            line: lineNumber,
            column: column
        }
    },
    
    ie: function(line) {
        var m = line.match(IE_STACK_LINE);
        if (m) {
            var file = m[3] || m[10]
            var fn = m[2] || m[9]
            var lineNumber = m[5] || m[12]
            var column = m[7] || m[14]
        }
        
        return {
            file: file,
            function: fn,
            line: lineNumber,
            column: column
        }
    }
}

// The following 2 regex patterns were originally taken from google closure library: https://code.google.com/p/closure-library/source/browse/closure/goog/testing/stacktrace.js
// RegExp pattern for JavaScript identifiers. We don't support Unicode identifiers defined in ECMAScript v3.
var IDENTIFIER_PATTERN_ = '[\\w$]*';
// RegExp pattern for an URL + position inside the file.
var URL_PATTERN_ = '((?:http|https|file|chrome-extension)://[^\\s)]+?|javascript:.*)';
var FILE_AND_LINE = URL_PATTERN_+'(:(\\d*)(:(\\d*))?)'

var STACKTRACE_JS_GETSOURCE_FAILURE = 'getSource failed with url'

var CHROME_STACKTRACE_JS_GETSOURCE_FAILURE = STACKTRACE_JS_GETSOURCE_FAILURE+'((?!'+'\\(\\)@'+').)*'

var CHROME_FILE_AND_LINE = FILE_AND_LINE//URL_PATTERN_+'(:(\\d*):(\\d*))'
var CHROME_IDENTIFIER_PATTERN = '\\<?'+IDENTIFIER_PATTERN_+'\\>?'
var CHROME_COMPOUND_IDENTIFIER = "((new )?"+CHROME_IDENTIFIER_PATTERN+'(\\.'+CHROME_IDENTIFIER_PATTERN+')*)( \\[as '+IDENTIFIER_PATTERN_+'])?'
var CHROME_UNKNOWN_IDENTIFIER = "(\\(\\?\\))"
var CHROME_ANONYMOUS_IDENTIFIER = "{anonymous}"

// output from stacktrace.js is: "name()@..." instead of "name (...)"
var CHROME_ANONYMOUS_FUNCTION = '('+CHROME_STACKTRACE_JS_GETSOURCE_FAILURE+'|'+CHROME_COMPOUND_IDENTIFIER
                                   +'|'+CHROME_UNKNOWN_IDENTIFIER+'|'+CHROME_ANONYMOUS_IDENTIFIER+')'
                                    +'\\(\\)'+'@'+CHROME_FILE_AND_LINE
var CHROME_NORMAL_FUNCTION = CHROME_COMPOUND_IDENTIFIER+' \\('+CHROME_FILE_AND_LINE+'\\)'
var CHROME_NATIVE_FUNCTION = CHROME_COMPOUND_IDENTIFIER+' (\\(native\\))'

var CHROME_FUNCTION_CALL = '('+CHROME_ANONYMOUS_FUNCTION+"|"+CHROME_NORMAL_FUNCTION+"|"+CHROME_NATIVE_FUNCTION+')'

var CHROME_STACK_LINE = new RegExp('^'+CHROME_FUNCTION_CALL+'$')  // precompile them so its faster


var FIREFOX_STACKTRACE_JS_GETSOURCE_FAILURE = STACKTRACE_JS_GETSOURCE_FAILURE+'((?!'+'\\(\\)@'+').)*'+'\\(\\)'
var FIREFOX_FILE_AND_LINE = FILE_AND_LINE//URL_PATTERN_+'((:(\\d*):(\\d*))|(:(\\d*)))'
var FIREFOX_ARRAY_PART = '\\[\\d*\\]'
var FIREFOX_WEIRD_PART = '\\(\\?\\)'
var FIREFOX_COMPOUND_IDENTIFIER = '(('+IDENTIFIER_PATTERN_+'|'+FIREFOX_ARRAY_PART+'|'+FIREFOX_WEIRD_PART+')((\\(\\))?|(\\.|\\<|/)*))*'
var FIREFOX_FUNCTION_CALL = '('+FIREFOX_COMPOUND_IDENTIFIER+'|'+FIREFOX_STACKTRACE_JS_GETSOURCE_FAILURE+')@'+FIREFOX_FILE_AND_LINE
var FIREFOX_STACK_LINE = new RegExp('^'+FIREFOX_FUNCTION_CALL+'$')

var IE_WHITESPACE = '[\\w \\t]'
var IE_FILE_AND_LINE = FILE_AND_LINE
var IE_ANONYMOUS = '('+IE_WHITESPACE+'*({anonymous}\\(\\)))@\\('+IE_FILE_AND_LINE+'\\)'
var IE_NORMAL_FUNCTION = '('+IDENTIFIER_PATTERN_+')@'+IE_FILE_AND_LINE
var IE_FUNCTION_CALL = '('+IE_NORMAL_FUNCTION+'|'+IE_ANONYMOUS+')'+IE_WHITESPACE+'*'
var IE_STACK_LINE = new RegExp('^'+IE_FUNCTION_CALL+'$')