Mirrors/lodash
1
0
Fork 0
mirror of https://github.com/whoisclebs/lodash.git synced 2026-02-13 20:37:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

Simplify createIterator.

Browse Source 
Former-commit-id: 3058b25bf7677a45261b640bd6ff6e1af1849c2c
This commit is contained in:
John-David Dalton
2012-05-13 17:53:10 -04:00
parent 5b975adc8e
commit 0297e31893
1 changed files with 10 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
lodash.js
View File

@@ -3,7 +3,7 @@
* Copyright 2012 John-David Dalton <http://allyoucanleet.com/> * Copyright 2012 John-David Dalton <http://allyoucanleet.com/>
* Based on Underscore.js 1.3.3, copyright 2009-2012 Jeremy Ashkenas, DocumentCloud Inc. * Based on Underscore.js 1.3.3, copyright 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
* <http://documentcloud.github.com/underscore> * <http://documentcloud.github.com/underscore>
* Available under MIT license <http://mths.be/mit> * Available under MIT license <http://lodash.com/license>
*/ */
;(function(window, undefined) { ;(function(window, undefined) {
'use strict'; 'use strict';
@@ -326,18 +326,21 @@
*/ */
var isEmpty = createIterator({ var isEmpty = createIterator({
'args': 'value', 'args': 'value',
'iterate': 'objects',
'init': 'true', 'init': 'true',
'top': 'top':
'var className = toString.call(value);\n' + 'var className = toString.call(value);\n' +
'if (className == arrayClass || className == stringClass) return !value.length', 'if (className == arrayClass || className == stringClass) return !value.length',
'inLoop': 'return false' 'inLoop': {
'object': 'return false'
}
}); });
/*--------------------------------------------------------------------------*/ /*--------------------------------------------------------------------------*/
/** /**
* Creates compiled iteration functions. * Creates compiled iteration functions. The iteration function will be created
* to iterate over only objects if the first argument of `options.args` is
* "object" or `options.inLoop.array` is falsey.
* *
* @private * @private
* @param {Object} [options1, options2, ..] The compile options objects. * @param {Object} [options1, options2, ..] The compile options objects.
@@ -345,10 +348,6 @@
* args - A string of comma separated arguments the iteration function will * args - A string of comma separated arguments the iteration function will
* accept. * accept.
* *
* iterate - A string to specify whether the iteration function is only for
* "arrays" or "objects". It is automatically set if the first argument of
* `options.args` is "array" or "object".
*
* init - A string to specify the initial value of the `result` variable. * init - A string to specify the initial value of the `result` variable.
* *
* exit - A string of code to use in place of the default exit-early check * exit - A string of code to use in place of the default exit-early check
@@ -406,10 +405,10 @@
} }
// set additional template data values // set additional template data values
var args = data.args, var args = data.args,
arrayBranch = data.arrayBranch,
objectBranch = data.objectBranch, objectBranch = data.objectBranch,
firstArg = /^[^,]+/.exec(args)[0], firstArg = /^[^,]+/.exec(args)[0],
loopExp = objectBranch.loopExp, loopExp = objectBranch.loopExp,
iterate = data.iterate,
iteratedObject = /\S+$/.exec(loopExp || firstArg)[0]; iteratedObject = /\S+$/.exec(loopExp || firstArg)[0];
data.firstArg = firstArg; data.firstArg = firstArg;
@@ -422,13 +421,10 @@
if (!data.exit) { if (!data.exit) {
data.exit = 'if (' + firstArg + ' == null) return result'; data.exit = 'if (' + firstArg + ' == null) return result';
} }
if (firstArg == 'object' || iterate == 'objects') { if (firstArg == 'object' || !arrayBranch.inLoop) {
data.arrayBranch = null; data.arrayBranch = null;
} }
if (firstArg == 'array' || iterate == 'arrays') { if (!loopExp) {
data.objectBranch = null;
}
else if (!loopExp) {
objectBranch.loopExp = 'index in ' + iteratedObject; objectBranch.loopExp = 'index in ' + iteratedObject;
} }
// create the function factory // create the function factory