112 lines
2.7 KiB
JavaScript
112 lines
2.7 KiB
JavaScript
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exports.get = function(belowFn) {
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var oldLimit = Error.stackTraceLimit;
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Error.stackTraceLimit = Infinity;
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var dummyObject = {};
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var v8Handler = Error.prepareStackTrace;
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Error.prepareStackTrace = function(dummyObject, v8StackTrace) {
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return v8StackTrace;
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};
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Error.captureStackTrace(dummyObject, belowFn || exports.get);
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var v8StackTrace = dummyObject.stack;
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Error.prepareStackTrace = v8Handler;
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Error.stackTraceLimit = oldLimit;
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return v8StackTrace;
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};
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exports.parse = function(err) {
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if (!err.stack) {
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return [];
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}
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var self = this;
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var lines = err.stack.split('\n').slice(1);
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return lines
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.map(function(line) {
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if (line.match(/^\s*[-]{4,}$/)) {
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return self._createParsedCallSite({
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fileName: line,
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lineNumber: null,
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functionName: null,
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typeName: null,
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methodName: null,
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columnNumber: null,
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'native': null,
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});
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}
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var lineMatch = line.match(/at (?:(.+)\s+)?\(?(?:(.+?):(\d+):(\d+)|([^)]+))\)?/);
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if (!lineMatch) {
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return;
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}
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var object = null;
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var method = null;
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var functionName = null;
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var typeName = null;
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var methodName = null;
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var isNative = (lineMatch[5] === 'native');
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if (lineMatch[1]) {
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var methodMatch = lineMatch[1].match(/([^\.]+)(?:\.(.+))?/);
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object = methodMatch[1];
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method = methodMatch[2];
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functionName = lineMatch[1];
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typeName = 'Object';
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}
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if (method) {
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typeName = object;
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methodName = method;
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}
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if (method === '<anonymous>') {
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methodName = null;
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functionName = '';
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}
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var properties = {
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fileName: lineMatch[2] || null,
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lineNumber: parseInt(lineMatch[3], 10) || null,
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functionName: functionName,
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typeName: typeName,
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methodName: methodName,
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columnNumber: parseInt(lineMatch[4], 10) || null,
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'native': isNative,
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};
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return self._createParsedCallSite(properties);
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})
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.filter(function(callSite) {
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return !!callSite;
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});
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};
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exports._createParsedCallSite = function(properties) {
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var methods = {};
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for (var property in properties) {
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var prefix = 'get';
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if (property === 'native') {
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prefix = 'is';
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}
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var method = prefix + property.substr(0, 1).toUpperCase() + property.substr(1);
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(function(property) {
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methods[method] = function() {
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return properties[property];
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}
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})(property);
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}
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var callSite = Object.create(methods);
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for (var property in properties) {
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callSite[property] = properties[property];
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}
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return callSite;
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};
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