stacktrace-js
Version:
Framework-agnostic, micro-library for getting stack traces in all environments
1,393 lines (1,224 loc) • 272 kB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.StackTrace = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function(root, factory) {
'use strict';
// Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, Rhino, and browsers.
/* istanbul ignore next */
if (typeof define === 'function' && define.amd) {
define('error-stack-parser', ['stackframe'], factory);
} else if (typeof exports === 'object') {
module.exports = factory(require('stackframe'));
} else {
root.ErrorStackParser = factory(root.StackFrame);
}
}(this, function ErrorStackParser(StackFrame) {
'use strict';
var FIREFOX_SAFARI_STACK_REGEXP = /(^|@)\S+:\d+/;
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];
},
parseV8OrIE: function ErrorStackParser$$parseV8OrIE(error) {
var filtered = error.stack.split('\n').filter(function(line) {
return !!line.match(CHROME_IE_STACK_REGEXP);
}, this);
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', '<anonymous>'].indexOf(locationParts[0]) > -1 ? undefined : locationParts[0];
return new StackFrame({
functionName: functionName,
fileName: fileName,
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);
}
},
parseOpera9: function ErrorStackParser$$parseOpera9(e) {
var lineRE = /Line (\d+).*script (?:in )?(\S+)/i;
var lines = e.message.split('\n');
var result = [];
for (var i = 2, len = lines.length; i < len; i += 2) {
var match = lineRE.exec(lines[i]);
if (match) {
result.push(new StackFrame({
fileName: match[2],
lineNumber: match[1],
source: lines[i]
}));
}
}
return result;
},
parseOpera10: function ErrorStackParser$$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;
},
// 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(/<anonymous function(: (\w+))?>/, '$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);
}
};
}));
},{"stackframe":2}],2:[function(require,module,exports){
(function(root, factory) {
'use strict';
// Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, Rhino, and browsers.
/* istanbul ignore next */
if (typeof define === 'function' && define.amd) {
define('stackframe', [], factory);
} else if (typeof exports === 'object') {
module.exports = factory();
} else {
root.StackFrame = factory();
}
}(this, function() {
'use strict';
function _isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
function _capitalize(str) {
return str.charAt(0).toUpperCase() + str.substring(1);
}
function _getter(p) {
return function() {
return this[p];
};
}
var booleanProps = ['isConstructor', 'isEval', 'isNative', 'isToplevel'];
var numericProps = ['columnNumber', 'lineNumber'];
var stringProps = ['fileName', 'functionName', 'source'];
var arrayProps = ['args'];
var props = booleanProps.concat(numericProps, stringProps, arrayProps);
function StackFrame(obj) {
if (!obj) return;
for (var i = 0; i < props.length; i++) {
if (obj[props[i]] !== undefined) {
this['set' + _capitalize(props[i])](obj[props[i]]);
}
}
}
StackFrame.prototype = {
getArgs: function() {
return this.args;
},
setArgs: function(v) {
if (Object.prototype.toString.call(v) !== '[object Array]') {
throw new TypeError('Args must be an Array');
}
this.args = v;
},
getEvalOrigin: function() {
return this.evalOrigin;
},
setEvalOrigin: function(v) {
if (v instanceof StackFrame) {
this.evalOrigin = v;
} else if (v instanceof Object) {
this.evalOrigin = new StackFrame(v);
} else {
throw new TypeError('Eval Origin must be an Object or StackFrame');
}
},
toString: function() {
var fileName = this.getFileName() || '';
var lineNumber = this.getLineNumber() || '';
var columnNumber = this.getColumnNumber() || '';
var functionName = this.getFunctionName() || '';
if (this.getIsEval()) {
if (fileName) {
return '[eval] (' + fileName + ':' + lineNumber + ':' + columnNumber + ')';
}
return '[eval]:' + lineNumber + ':' + columnNumber;
}
if (functionName) {
return functionName + ' (' + fileName + ':' + lineNumber + ':' + columnNumber + ')';
}
return fileName + ':' + lineNumber + ':' + columnNumber;
}
};
StackFrame.fromString = function StackFrame$$fromString(str) {
var argsStartIndex = str.indexOf('(');
var argsEndIndex = str.lastIndexOf(')');
var functionName = str.substring(0, argsStartIndex);
var args = str.substring(argsStartIndex + 1, argsEndIndex).split(',');
var locationString = str.substring(argsEndIndex + 1);
if (locationString.indexOf('@') === 0) {
var parts = /@(.+?)(?::(\d+))?(?::(\d+))?$/.exec(locationString, '');
var fileName = parts[1];
var lineNumber = parts[2];
var columnNumber = parts[3];
}
return new StackFrame({
functionName: functionName,
args: args || undefined,
fileName: fileName,
lineNumber: lineNumber || undefined,
columnNumber: columnNumber || undefined
});
};
for (var i = 0; i < booleanProps.length; i++) {
StackFrame.prototype['get' + _capitalize(booleanProps[i])] = _getter(booleanProps[i]);
StackFrame.prototype['set' + _capitalize(booleanProps[i])] = (function(p) {
return function(v) {
this[p] = Boolean(v);
};
})(booleanProps[i]);
}
for (var j = 0; j < numericProps.length; j++) {
StackFrame.prototype['get' + _capitalize(numericProps[j])] = _getter(numericProps[j]);
StackFrame.prototype['set' + _capitalize(numericProps[j])] = (function(p) {
return function(v) {
if (!_isNumber(v)) {
throw new TypeError(p + ' must be a Number');
}
this[p] = Number(v);
};
})(numericProps[j]);
}
for (var k = 0; k < stringProps.length; k++) {
StackFrame.prototype['get' + _capitalize(stringProps[k])] = _getter(stringProps[k]);
StackFrame.prototype['set' + _capitalize(stringProps[k])] = (function(p) {
return function(v) {
this[p] = String(v);
};
})(stringProps[k]);
}
return StackFrame;
}));
},{}],3:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
* Copyright 2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE or:
* http://opensource.org/licenses/BSD-3-Clause
*/
var util = require('./util');
var has = Object.prototype.hasOwnProperty;
/**
* A data structure which is a combination of an array and a set. Adding a new
* member is O(1), testing for membership is O(1), and finding the index of an
* element is O(1). Removing elements from the set is not supported. Only
* strings are supported for membership.
*/
function ArraySet() {
this._array = [];
this._set = Object.create(null);
}
/**
* Static method for creating ArraySet instances from an existing array.
*/
ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
var set = new ArraySet();
for (var i = 0, len = aArray.length; i < len; i++) {
set.add(aArray[i], aAllowDuplicates);
}
return set;
};
/**
* Return how many unique items are in this ArraySet. If duplicates have been
* added, than those do not count towards the size.
*
* @returns Number
*/
ArraySet.prototype.size = function ArraySet_size() {
return Object.getOwnPropertyNames(this._set).length;
};
/**
* Add the given string to this set.
*
* @param String aStr
*/
ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
var sStr = util.toSetString(aStr);
var isDuplicate = has.call(this._set, sStr);
var idx = this._array.length;
if (!isDuplicate || aAllowDuplicates) {
this._array.push(aStr);
}
if (!isDuplicate) {
this._set[sStr] = idx;
}
};
/**
* Is the given string a member of this set?
*
* @param String aStr
*/
ArraySet.prototype.has = function ArraySet_has(aStr) {
var sStr = util.toSetString(aStr);
return has.call(this._set, sStr);
};
/**
* What is the index of the given string in the array?
*
* @param String aStr
*/
ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
var sStr = util.toSetString(aStr);
if (has.call(this._set, sStr)) {
return this._set[sStr];
}
throw new Error('"' + aStr + '" is not in the set.');
};
/**
* What is the element at the given index?
*
* @param Number aIdx
*/
ArraySet.prototype.at = function ArraySet_at(aIdx) {
if (aIdx >= 0 && aIdx < this._array.length) {
return this._array[aIdx];
}
throw new Error('No element indexed by ' + aIdx);
};
/**
* Returns the array representation of this set (which has the proper indices
* indicated by indexOf). Note that this is a copy of the internal array used
* for storing the members so that no one can mess with internal state.
*/
ArraySet.prototype.toArray = function ArraySet_toArray() {
return this._array.slice();
};
exports.ArraySet = ArraySet;
},{"./util":9}],4:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
* Copyright 2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE or:
* http://opensource.org/licenses/BSD-3-Clause
*
* Based on the Base 64 VLQ implementation in Closure Compiler:
* https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
*
* Copyright 2011 The Closure Compiler Authors. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
var base64 = require('./base64');
// A single base 64 digit can contain 6 bits of data. For the base 64 variable
// length quantities we use in the source map spec, the first bit is the sign,
// the next four bits are the actual value, and the 6th bit is the
// continuation bit. The continuation bit tells us whether there are more
// digits in this value following this digit.
//
// Continuation
// | Sign
// | |
// V V
// 101011
var VLQ_BASE_SHIFT = 5;
// binary: 100000
var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
// binary: 011111
var VLQ_BASE_MASK = VLQ_BASE - 1;
// binary: 100000
var VLQ_CONTINUATION_BIT = VLQ_BASE;
/**
* Converts from a two-complement value to a value where the sign bit is
* placed in the least significant bit. For example, as decimals:
* 1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
* 2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
*/
function toVLQSigned(aValue) {
return aValue < 0
? ((-aValue) << 1) + 1
: (aValue << 1) + 0;
}
/**
* Converts to a two-complement value from a value where the sign bit is
* placed in the least significant bit. For example, as decimals:
* 2 (10 binary) becomes 1, 3 (11 binary) becomes -1
* 4 (100 binary) becomes 2, 5 (101 binary) becomes -2
*/
function fromVLQSigned(aValue) {
var isNegative = (aValue & 1) === 1;
var shifted = aValue >> 1;
return isNegative
? -shifted
: shifted;
}
/**
* Returns the base 64 VLQ encoded value.
*/
exports.encode = function base64VLQ_encode(aValue) {
var encoded = "";
var digit;
var vlq = toVLQSigned(aValue);
do {
digit = vlq & VLQ_BASE_MASK;
vlq >>>= VLQ_BASE_SHIFT;
if (vlq > 0) {
// There are still more digits in this value, so we must make sure the
// continuation bit is marked.
digit |= VLQ_CONTINUATION_BIT;
}
encoded += base64.encode(digit);
} while (vlq > 0);
return encoded;
};
/**
* Decodes the next base 64 VLQ value from the given string and returns the
* value and the rest of the string via the out parameter.
*/
exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
var strLen = aStr.length;
var result = 0;
var shift = 0;
var continuation, digit;
do {
if (aIndex >= strLen) {
throw new Error("Expected more digits in base 64 VLQ value.");
}
digit = base64.decode(aStr.charCodeAt(aIndex++));
if (digit === -1) {
throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
}
continuation = !!(digit & VLQ_CONTINUATION_BIT);
digit &= VLQ_BASE_MASK;
result = result + (digit << shift);
shift += VLQ_BASE_SHIFT;
} while (continuation);
aOutParam.value = fromVLQSigned(result);
aOutParam.rest = aIndex;
};
},{"./base64":5}],5:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
* Copyright 2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE or:
* http://opensource.org/licenses/BSD-3-Clause
*/
var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
/**
* Encode an integer in the range of 0 to 63 to a single base 64 digit.
*/
exports.encode = function (number) {
if (0 <= number && number < intToCharMap.length) {
return intToCharMap[number];
}
throw new TypeError("Must be between 0 and 63: " + number);
};
/**
* Decode a single base 64 character code digit to an integer. Returns -1 on
* failure.
*/
exports.decode = function (charCode) {
var bigA = 65; // 'A'
var bigZ = 90; // 'Z'
var littleA = 97; // 'a'
var littleZ = 122; // 'z'
var zero = 48; // '0'
var nine = 57; // '9'
var plus = 43; // '+'
var slash = 47; // '/'
var littleOffset = 26;
var numberOffset = 52;
// 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
if (bigA <= charCode && charCode <= bigZ) {
return (charCode - bigA);
}
// 26 - 51: abcdefghijklmnopqrstuvwxyz
if (littleA <= charCode && charCode <= littleZ) {
return (charCode - littleA + littleOffset);
}
// 52 - 61: 0123456789
if (zero <= charCode && charCode <= nine) {
return (charCode - zero + numberOffset);
}
// 62: +
if (charCode == plus) {
return 62;
}
// 63: /
if (charCode == slash) {
return 63;
}
// Invalid base64 digit.
return -1;
};
},{}],6:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
* Copyright 2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE or:
* http://opensource.org/licenses/BSD-3-Clause
*/
exports.GREATEST_LOWER_BOUND = 1;
exports.LEAST_UPPER_BOUND = 2;
/**
* Recursive implementation of binary search.
*
* @param aLow Indices here and lower do not contain the needle.
* @param aHigh Indices here and higher do not contain the needle.
* @param aNeedle The element being searched for.
* @param aHaystack The non-empty array being searched.
* @param aCompare Function which takes two elements and returns -1, 0, or 1.
* @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
* 'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
* closest element that is smaller than or greater than the one we are
* searching for, respectively, if the exact element cannot be found.
*/
function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
// This function terminates when one of the following is true:
//
// 1. We find the exact element we are looking for.
//
// 2. We did not find the exact element, but we can return the index of
// the next-closest element.
//
// 3. We did not find the exact element, and there is no next-closest
// element than the one we are searching for, so we return -1.
var mid = Math.floor((aHigh - aLow) / 2) + aLow;
var cmp = aCompare(aNeedle, aHaystack[mid], true);
if (cmp === 0) {
// Found the element we are looking for.
return mid;
}
else if (cmp > 0) {
// Our needle is greater than aHaystack[mid].
if (aHigh - mid > 1) {
// The element is in the upper half.
return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
}
// The exact needle element was not found in this haystack. Determine if
// we are in termination case (3) or (2) and return the appropriate thing.
if (aBias == exports.LEAST_UPPER_BOUND) {
return aHigh < aHaystack.length ? aHigh : -1;
} else {
return mid;
}
}
else {
// Our needle is less than aHaystack[mid].
if (mid - aLow > 1) {
// The element is in the lower half.
return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
}
// we are in termination case (3) or (2) and return the appropriate thing.
if (aBias == exports.LEAST_UPPER_BOUND) {
return mid;
} else {
return aLow < 0 ? -1 : aLow;
}
}
}
/**
* This is an implementation of binary search which will always try and return
* the index of the closest element if there is no exact hit. This is because
* mappings between original and generated line/col pairs are single points,
* and there is an implicit region between each of them, so a miss just means
* that you aren't on the very start of a region.
*
* @param aNeedle The element you are looking for.
* @param aHaystack The array that is being searched.
* @param aCompare A function which takes the needle and an element in the
* array and returns -1, 0, or 1 depending on whether the needle is less
* than, equal to, or greater than the element, respectively.
* @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
* 'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
* closest element that is smaller than or greater than the one we are
* searching for, respectively, if the exact element cannot be found.
* Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
*/
exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
if (aHaystack.length === 0) {
return -1;
}
var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
aCompare, aBias || exports.GREATEST_LOWER_BOUND);
if (index < 0) {
return -1;
}
// We have found either the exact element, or the next-closest element than
// the one we are searching for. However, there may be more than one such
// element. Make sure we always return the smallest of these.
while (index - 1 >= 0) {
if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
break;
}
--index;
}
return index;
};
},{}],7:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
* Copyright 2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE or:
* http://opensource.org/licenses/BSD-3-Clause
*/
// It turns out that some (most?) JavaScript engines don't self-host
// `Array.prototype.sort`. This makes sense because C++ will likely remain
// faster than JS when doing raw CPU-intensive sorting. However, when using a
// custom comparator function, calling back and forth between the VM's C++ and
// JIT'd JS is rather slow *and* loses JIT type information, resulting in
// worse generated code for the comparator function than would be optimal. In
// fact, when sorting with a comparator, these costs outweigh the benefits of
// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
// a ~3500ms mean speed-up in `bench/bench.html`.
/**
* Swap the elements indexed by `x` and `y` in the array `ary`.
*
* @param {Array} ary
* The array.
* @param {Number} x
* The index of the first item.
* @param {Number} y
* The index of the second item.
*/
function swap(ary, x, y) {
var temp = ary[x];
ary[x] = ary[y];
ary[y] = temp;
}
/**
* Returns a random integer within the range `low .. high` inclusive.
*
* @param {Number} low
* The lower bound on the range.
* @param {Number} high
* The upper bound on the range.
*/
function randomIntInRange(low, high) {
return Math.round(low + (Math.random() * (high - low)));
}
/**
* The Quick Sort algorithm.
*
* @param {Array} ary
* An array to sort.
* @param {function} comparator
* Function to use to compare two items.
* @param {Number} p
* Start index of the array
* @param {Number} r
* End index of the array
*/
function doQuickSort(ary, comparator, p, r) {
// If our lower bound is less than our upper bound, we (1) partition the
// array into two pieces and (2) recurse on each half. If it is not, this is
// the empty array and our base case.
if (p < r) {
// (1) Partitioning.
//
// The partitioning chooses a pivot between `p` and `r` and moves all
// elements that are less than or equal to the pivot to the before it, and
// all the elements that are greater than it after it. The effect is that
// once partition is done, the pivot is in the exact place it will be when
// the array is put in sorted order, and it will not need to be moved
// again. This runs in O(n) time.
// Always choose a random pivot so that an input array which is reverse
// sorted does not cause O(n^2) running time.
var pivotIndex = randomIntInRange(p, r);
var i = p - 1;
swap(ary, pivotIndex, r);
var pivot = ary[r];
// Immediately after `j` is incremented in this loop, the following hold
// true:
//
// * Every element in `ary[p .. i]` is less than or equal to the pivot.
//
// * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
for (var j = p; j < r; j++) {
if (comparator(ary[j], pivot) <= 0) {
i += 1;
swap(ary, i, j);
}
}
swap(ary, i + 1, j);
var q = i + 1;
// (2) Recurse on each half.
doQuickSort(ary, comparator, p, q - 1);
doQuickSort(ary, comparator, q + 1, r);
}
}
/**
* Sort the given array in-place with the given comparator function.
*
* @param {Array} ary
* An array to sort.
* @param {function} comparator
* Function to use to compare two items.
*/
exports.quickSort = function (ary, comparator) {
doQuickSort(ary, comparator, 0, ary.length - 1);
};
},{}],8:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
* Copyright 2011 Mozilla Foundation and contributors
* Licensed under the New BSD license. See LICENSE or:
* http://opensource.org/licenses/BSD-3-Clause
*/
var util = require('./util');
var binarySearch = require('./binary-search');
var ArraySet = require('./array-set').ArraySet;
var base64VLQ = require('./base64-vlq');
var quickSort = require('./quick-sort').quickSort;
function SourceMapConsumer(aSourceMap) {
var sourceMap = aSourceMap;
if (typeof aSourceMap === 'string') {
sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
}
return sourceMap.sections != null
? new IndexedSourceMapConsumer(sourceMap)
: new BasicSourceMapConsumer(sourceMap);
}
SourceMapConsumer.fromSourceMap = function(aSourceMap) {
return BasicSourceMapConsumer.fromSourceMap(aSourceMap);
}
/**
* The version of the source mapping spec that we are consuming.
*/
SourceMapConsumer.prototype._version = 3;
// `__generatedMappings` and `__originalMappings` are arrays that hold the
// parsed mapping coordinates from the source map's "mappings" attribute. They
// are lazily instantiated, accessed via the `_generatedMappings` and
// `_originalMappings` getters respectively, and we only parse the mappings
// and create these arrays once queried for a source location. We jump through
// these hoops because there can be many thousands of mappings, and parsing
// them is expensive, so we only want to do it if we must.
//
// Each object in the arrays is of the form:
//
// {
// generatedLine: The line number in the generated code,
// generatedColumn: The column number in the generated code,
// source: The path to the original source file that generated this
// chunk of code,
// originalLine: The line number in the original source that
// corresponds to this chunk of generated code,
// originalColumn: The column number in the original source that
// corresponds to this chunk of generated code,
// name: The name of the original symbol which generated this chunk of
// code.
// }
//
// All properties except for `generatedLine` and `generatedColumn` can be
// `null`.
//
// `_generatedMappings` is ordered by the generated positions.
//
// `_originalMappings` is ordered by the original positions.
SourceMapConsumer.prototype.__generatedMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
get: function () {
if (!this.__generatedMappings) {
this._parseMappings(this._mappings, this.sourceRoot);
}
return this.__generatedMappings;
}
});
SourceMapConsumer.prototype.__originalMappings = null;
Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
get: function () {
if (!this.__originalMappings) {
this._parseMappings(this._mappings, this.sourceRoot);
}
return this.__originalMappings;
}
});
SourceMapConsumer.prototype._charIsMappingSeparator =
function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
var c = aStr.charAt(index);
return c === ";" || c === ",";
};
/**
* Parse the mappings in a string in to a data structure which we can easily
* query (the ordered arrays in the `this.__generatedMappings` and
* `this.__originalMappings` properties).
*/
SourceMapConsumer.prototype._parseMappings =
function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
throw new Error("Subclasses must implement _parseMappings");
};
SourceMapConsumer.GENERATED_ORDER = 1;
SourceMapConsumer.ORIGINAL_ORDER = 2;
SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
SourceMapConsumer.LEAST_UPPER_BOUND = 2;
/**
* Iterate over each mapping between an original source/line/column and a
* generated line/column in this source map.
*
* @param Function aCallback
* The function that is called with each mapping.
* @param Object aContext
* Optional. If specified, this object will be the value of `this` every
* time that `aCallback` is called.
* @param aOrder
* Either `SourceMapConsumer.GENERATED_ORDER` or
* `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
* iterate over the mappings sorted by the generated file's line/column
* order or the original's source/line/column order, respectively. Defaults to
* `SourceMapConsumer.GENERATED_ORDER`.
*/
SourceMapConsumer.prototype.eachMapping =
function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
var context = aContext || null;
var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
var mappings;
switch (order) {
case SourceMapConsumer.GENERATED_ORDER:
mappings = this._generatedMappings;
break;
case SourceMapConsumer.ORIGINAL_ORDER:
mappings = this._originalMappings;
break;
default:
throw new Error("Unknown order of iteration.");
}
var sourceRoot = this.sourceRoot;
mappings.map(function (mapping) {
var source = mapping.source === null ? null : this._sources.at(mapping.source);
if (source != null && sourceRoot != null) {
source = util.join(sourceRoot, source);
}
return {
source: source,
generatedLine: mapping.generatedLine,
generatedColumn: mapping.generatedColumn,
originalLine: mapping.originalLine,
originalColumn: mapping.originalColumn,
name: mapping.name === null ? null : this._names.at(mapping.name)
};
}, this).forEach(aCallback, context);
};
/**
* Returns all generated line and column information for the original source,
* line, and column provided. If no column is provided, returns all mappings
* corresponding to a either the line we are searching for or the next
* closest line that has any mappings. Otherwise, returns all mappings
* corresponding to the given line and either the column we are searching for
* or the next closest column that has any offsets.
*
* The only argument is an object with the following properties:
*
* - source: The filename of the original source.
* - line: The line number in the original source.
* - column: Optional. the column number in the original source.
*
* and an array of objects is returned, each with the following properties:
*
* - line: The line number in the generated source, or null.
* - column: The column number in the generated source, or null.
*/
SourceMapConsumer.prototype.allGeneratedPositionsFor =
function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
var line = util.getArg(aArgs, 'line');
// When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
// returns the index of the closest mapping less than the needle. By
// setting needle.originalColumn to 0, we thus find the last mapping for
// the given line, provided such a mapping exists.
var needle = {
source: util.getArg(aArgs, 'source'),
originalLine: line,
originalColumn: util.getArg(aArgs, 'column', 0)
};
if (this.sourceRoot != null) {
needle.source = util.relative(this.sourceRoot, needle.source);
}
if (!this._sources.has(needle.source)) {
return [];
}
needle.source = this._sources.indexOf(needle.source);
var mappings = [];
var index = this._findMapping(needle,
this._originalMappings,
"originalLine",
"originalColumn",
util.compareByOriginalPositions,
binarySearch.LEAST_UPPER_BOUND);
if (index >= 0) {
var mapping = this._originalMappings[index];
if (aArgs.column === undefined) {
var originalLine = mapping.originalLine;
// Iterate until either we run out of mappings, or we run into
// a mapping for a different line than the one we found. Since
// mappings are sorted, this is guaranteed to find all mappings for
// the line we found.
while (mapping && mapping.originalLine === originalLine) {
mappings.push({
line: util.getArg(mapping, 'generatedLine', null),
column: util.getArg(mapping, 'generatedColumn', null),
lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
});
mapping = this._originalMappings[++index];
}
} else {
var originalColumn = mapping.originalColumn;
// Iterate until either we run out of mappings, or we run into
// a mapping for a different line than the one we were searching for.
// Since mappings are sorted, this is guaranteed to find all mappings for
// the line we are searching for.
while (mapping &&
mapping.originalLine === line &&
mapping.originalColumn == originalColumn) {
mappings.push({
line: util.getArg(mapping, 'generatedLine', null),
column: util.getArg(mapping, 'generatedColumn', null),
lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
});
mapping = this._originalMappings[++index];
}
}
}
return mappings;
};
exports.SourceMapConsumer = SourceMapConsumer;
/**
* A BasicSourceMapConsumer instance represents a parsed source map which we can
* query for information about the original file positions by giving it a file
* position in the generated source.
*
* The only parameter is the raw source map (either as a JSON string, or
* already parsed to an object). According to the spec, source maps have the
* following attributes:
*
* - version: Which version of the source map spec this map is following.
* - sources: An array of URLs to the original source files.
* - names: An array of identifiers which can be referrenced by individual mappings.
* - sourceRoot: Optional. The URL root from which all sources are relative.
* - sourcesContent: Optional. An array of contents of the original source files.
* - mappings: A string of base64 VLQs which contain the actual mappings.
* - file: Optional. The generated file this source map is associated with.
*
* Here is an example source map, taken from the source map spec[0]:
*
* {
* version : 3,
* file: "out.js",
* sourceRoot : "",
* sources: ["foo.js", "bar.js"],
* names: ["src", "maps", "are", "fun"],
* mappings: "AA,AB;;ABCDE;"
* }
*
* [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
*/
function BasicSourceMapConsumer(aSourceMap) {
var sourceMap = aSourceMap;
if (typeof aSourceMap === 'string') {
sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
}
var version = util.getArg(sourceMap, 'version');
var sources = util.getArg(sourceMap, 'sources');
// Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
// requires the array) to play nice here.
var names = util.getArg(sourceMap, 'names', []);
var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
var mappings = util.getArg(sourceMap, 'mappings');
var file = util.getArg(sourceMap, 'file', null);
// Once again, Sass deviates from the spec and supplies the version as a
// string rather than a number, so we use loose equality checking here.
if (version != this._version) {
throw new Error('Unsupported version: ' + version);
}
sources = sources
.map(String)
// Some source maps produce relative source paths like "./foo.js" instead of
// "foo.js". Normalize these first so that future comparisons will succeed.
// See bugzil.la/1090768.
.map(util.normalize)
// Always ensure that absolute sources are internally stored relative to
// the source root, if the source root is absolute. Not doing this would
// be particularly problematic when the source root is a prefix of the
// source (valid, but why??). See github issue #199 and bugzil.la/1188982.
.map(function (source) {
return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
? util.relative(sourceRoot, source)
: source;
});
// Pass `true` below to allow duplicate names and sources. While source maps
// are intended to be compressed and deduplicated, the TypeScript compiler
// sometimes generates source maps with duplicates in them. See Github issue
// #72 and bugzil.la/889492.
this._names = ArraySet.fromArray(names.map(String), true);
this._sources = ArraySet.fromArray(sources, true);
this.sourceRoot = sourceRoot;
this.sourcesContent = sourcesContent;
this._mappings = mappings;
this.file = file;
}
BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;
/**
* Create a BasicSourceMapConsumer from a SourceMapGenerator.
*
* @param SourceMapGenerator aSourceMap
* The source map that will be consumed.
* @returns BasicSourceMapConsumer
*/
BasicSourceMapConsumer.fromSourceMap =
function SourceMapConsumer_fromSourceMap(aSourceMap) {
var smc = Object.create(BasicSourceMapConsumer.prototype);
var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
smc.sourceRoot = aSourceMap._sourceRoot;
smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
smc.sourceRoot);
smc.file = aSourceMap._file;
// Because we are modifying the entries (by converting string sources and
// names to indices into the sources and names ArraySets), we have to make
// a copy of the entry or else bad things happen. Shared mutable state
// strikes again! See github issue #191.
var generatedMappings = aSourceMap._mappings.toArray().slice();
var destGeneratedMappings = smc.__generatedMappings = [];
var destOriginalMappings = smc.__originalMappings = [];
for (var i = 0, length = generatedMappings.length; i < length; i++) {
var srcMapping = generatedMappings[i];
var destMapping = new Mapping;
destMapping.generatedLine = srcMapping.generatedLine;
destMapping.generatedColumn = srcMapping.generatedColumn;
if (srcMapping.source) {
destMapping.source = sources.indexOf(srcMapping.source);
destMapping.originalLine = srcMapping.originalLine;
destMapping.originalColumn = srcMapping.originalColumn;
if (srcMapping.name) {
destMapping.name = names.indexOf(srcMapping.name);
}
destOriginalMappings.push(destMapping);
}
destGeneratedMappings.push(destMapping);
}
quickSort(smc.__originalMappings, util.compareByOriginalPositions);
return smc;
};
/**
* The version of the source mapping spec that we are consuming.
*/
BasicSourceMapConsumer.prototype._version = 3;
/**
* The list of original sources.
*/
Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
get: function () {
return this._sources.toArray().map(function (s) {
return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
}, this);
}
});
/**
* Provide the JIT with a nice shape / hidden class.
*/
function Mapping() {
this.generatedLine = 0;
this.generatedColumn = 0;
this.source = null;
this.originalLine = null;
this.originalColumn = null;
this.name = null;
}
/**
* Parse the mappings in a string in to a data structure which we can easily
* query (the ordered arrays in the `this.__generatedMappings` and
* `this.__originalMappings` properties).
*/
BasicSourceMapConsumer.prototype._parseMappings =
function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
var generatedLine = 1;
var previousGeneratedColumn = 0;
var previousOriginalLine = 0;
var previousOriginalColumn = 0;
var previousSource = 0;
var previousName = 0;
var length = aStr.length;
var index = 0;
var cachedSegments = {};
var temp = {};
var originalMappings = [];
var generatedMappings = [];
var mapping, str, segment, end, value;
while (index < length) {
if (aStr.charAt(index) === ';') {
generatedLine++;
index++;
previousGeneratedColumn = 0;
}
else if (aStr.charAt(index) === ',') {
index++;
}
else {
mapping = new Mapping();
mapping.generatedLine = generatedLine;
// Because each offset is encoded relative to the previous one,
// many segments often have the same encoding. We can exploit this
// fact by caching the parsed variable length fields of each segment,
// allowing us to avoid a second parse if we encounter the same
// segment again.
for (end = index; end < length; end++) {
if (this._charIsMappingSeparator(aStr, end)) {
break;
}
}
str = aStr.slice(index, end);
segment = cachedSegments[str];
if (segment) {
index += str.length;
} else {
segment = [];
while (index < end) {
base64VLQ.decode(aStr, index, temp);
value = temp.value;
index = temp.rest;
segment.push(value);
}
if (segment.length === 2) {
throw new Error('Found a source, but no line and column');
}
if (segment.length === 3) {
throw new Error('Found a source and line, but no column');
}
cachedSegments[str] = segment;
}
// Generated column.
mapping.generatedColumn = previousGeneratedColumn + segment[0];
previousGeneratedColumn = mapping.generatedColumn;
if (segment.length > 1) {
// Original source.
mapping.source = previousSource + segment[1];
previousSource += segment[1];
// Original line.
mapping.originalLine = previousOriginalLine + segment[2];
previousOriginalLine = mapping.originalLine;
// Lin