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Detect the argument length limit instead of using a fixed limit.

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Former-commit-id: 24875b0f67c7c92a37c315d3e8a33f23b5372119
This commit is contained in:
John-David Dalton
2012-05-10 01:40:42 -04:00
parent 9b26b96836
commit 90989a816d
1 changed files with 13 additions and 10 deletions
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23
lodash.js
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@@ -8,6 +8,13 @@
;(function(window, undefined) { ;(function(window, undefined) {
'use strict'; 'use strict';
/** Used to detect the JavaScript engine's argument length limit */
var argsLimit = Math.pow(2, 32) - 1;
try {
(function() { argsLimit = arguments.length; }).apply(null, Array(argsLimit));
} catch(e) { }
/** Used to escape characters in templates */ /** Used to escape characters in templates */
var escapes = { var escapes = {
'\\': '\\', '\\': '\\',
@@ -1263,11 +1270,11 @@
result = computed; result = computed;
if (!callback) { if (!callback) {
// assume an array of numbers // fast path for arrays of numbers
if (array[0] === +array[0] && length < 25000) { if (array[0] === +array[0] && length < argsLimit) {
// some browsers, like Chrome and Firefox, have a limit on the number of // some JavaScript engines have a limit on the number of arguments functions
// arguments a function is allowed to accept before clipping the arguments // can accept before clipping the argument length or throwing an error
// or throwing an error // https://bugs.webkit.org/show_bug.cgi?id=80797
try { try {
return Math.max.apply(Math, array); return Math.max.apply(Math, array);
} catch(e) { } } catch(e) { }
@@ -1314,11 +1321,7 @@
result = computed; result = computed;
if (!callback) { if (!callback) {
// assume an array of numbers if (array[0] === +array[0] && length < argsLimit) {
if (array[0] === +array[0] && length < 25000) {
// some browsers, like Chrome and Firefox, have a limit on the number of
// arguments a function is allowed to accept before clipping the arguments
// or throwing an error
try { try {
return Math.min.apply(Math, array); return Math.min.apply(Math, array);
} catch(e) { } } catch(e) { }