exports.get = function(belowFn) {
var oldLimit = Error.stackTraceLimit;
Error.stackTraceLimit = Infinity;
var dummyObject = {};
var v8Handler = Error.prepareStackTrace;
Error.prepareStackTrace = function(dummyObject, v8StackTrace) {
return v8StackTrace;
};
Error.captureStackTrace(dummyObject, belowFn || exports.get);
var v8StackTrace = dummyObject.stack;
Error.prepareStackTrace = v8Handler;
Error.stackTraceLimit = oldLimit;
return v8StackTrace;
};
exports.parse = function(err) {
if (!err.stack) {
return [];
}
var self = this;
var lines = err.stack.split('\n').slice(1);
return lines
.map(function(line) {
if (line.match(/^\s*[-]{4,}$/)) {
return self._createParsedCallSite({
fileName: line,
lineNumber: null,
functionName: null,
typeName: null,
methodName: null,
columnNumber: null,
'native': null,
});
}
var lineMatch = line.match(/at (?:(.+)\s+\()?(?:(.+?):(\d+)(?::(\d+))?|([^)]+))\)?/);
if (!lineMatch) {
return;
}
var object = null;
var method = null;
var functionName = null;
var typeName = null;
var methodName = null;
var isNative = (lineMatch[5] === 'native');
if (lineMatch[1]) {
functionName = lineMatch[1];
var methodStart = functionName.lastIndexOf('.');
if (functionName[methodStart-1] == '.')
methodStart--;
if (methodStart > 0) {
object = functionName.substr(0, methodStart);
method = functionName.substr(methodStart + 1);
var objectEnd = object.indexOf('.Module');
if (objectEnd > 0) {
functionName = functionName.substr(objectEnd + 1);
object = object.substr(0, objectEnd);
}
}
typeName = null;
}
if (method) {
typeName = object;
methodName = method;
}
if (method === '') {
methodName = null;
functionName = null;
}
var properties = {
fileName: lineMatch[2] || null,
lineNumber: parseInt(lineMatch[3], 10) || null,
functionName: functionName,
typeName: typeName,
methodName: methodName,
columnNumber: parseInt(lineMatch[4], 10) || null,
'native': isNative,
};
return self._createParsedCallSite(properties);
})
.filter(function(callSite) {
return !!callSite;
});
};
function CallSite(properties) {
for (var property in properties) {
this[property] = properties[property];
}
}
var strProperties = [
'this',
'typeName',
'functionName',
'methodName',
'fileName',
'lineNumber',
'columnNumber',
'function',
'evalOrigin'
];
var boolProperties = [
'topLevel',
'eval',
'native',
'constructor'
];
strProperties.forEach(function (property) {
CallSite.prototype[property] = null;
CallSite.prototype['get' + property[0].toUpperCase() + property.substr(1)] = function () {
return this[property];
}
});
boolProperties.forEach(function (property) {
CallSite.prototype[property] = false;
CallSite.prototype['is' + property[0].toUpperCase() + property.substr(1)] = function () {
return this[property];
}
});
exports._createParsedCallSite = function(properties) {
return new CallSite(properties);
};