root / trunk / web / dojo / dojox / lang / functional / curry.js
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.lang.functional.curry"]){ |
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| 9 | dojo._hasResource["dojox.lang.functional.curry"]=true; |
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| 10 | dojo.provide("dojox.lang.functional.curry");
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| 11 | dojo.require("dojox.lang.functional.lambda");
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| 12 | (function(){
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| 13 | var df=dojox.lang.functional,ap=Array.prototype;
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| 14 | var _1=function(_2){ |
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| 15 | return function(){ |
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| 16 | var _3=_2.args.concat(ap.slice.call(arguments,0)); |
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| 17 | if(arguments.length+_2.args.length<_2.arity){ |
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| 18 | return _1({func:_2.func,arity:_2.arity,args:_3}); |
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| 19 | } |
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| 20 | return _2.func.apply(this,_3); |
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| 21 | }; |
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| 22 | }; |
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| 23 | dojo.mixin(df,{curry:function(f,_4){
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| 24 | f=df.lambda(f); |
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| 25 | _4=typeof _4=="number"?_4:f.length; |
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| 26 | return _1({func:f,arity:_4,args:[]}); |
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| 27 | },arg:{},partial:function(f){ |
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| 28 | var a=arguments,l=a.length,_5=new Array(l-1),p=[],i=1,t; |
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| 29 | f=df.lambda(f); |
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| 30 | for(;i<l;++i){
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| 31 | t=a[i]; |
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| 32 | _5[i-1]=t;
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| 33 | if(t===df.arg){
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| 34 | p.push(i-1);
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| 35 | } |
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| 36 | } |
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| 37 | return function(){ |
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| 38 | var t=ap.slice.call(_5,0),i=0,l=p.length; |
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| 39 | for(;i<l;++i){
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| 40 | t[p[i]]=arguments[i];
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| 41 | } |
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| 42 | return f.apply(this,t); |
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| 43 | }; |
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| 44 | },mixer:function(f,_6){ |
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| 45 | f=df.lambda(f); |
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| 46 | return function(){ |
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| 47 | var t=new Array(_6.length),i=0,l=_6.length; |
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| 48 | for(;i<l;++i){
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| 49 | t[i]=arguments[_6[i]];
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| 50 | } |
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| 51 | return f.apply(this,t); |
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| 52 | }; |
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| 53 | },flip:function(f){ |
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| 54 | f=df.lambda(f); |
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| 55 | return function(){ |
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| 56 | var a=arguments,l=a.length-1,t=new Array(l+1),i=0; |
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| 57 | for(;i<=l;++i){
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| 58 | t[l-i]=a[i]; |
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| 59 | } |
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| 60 | return f.apply(this,t); |
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| 61 | }; |
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| 62 | }}); |
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| 63 | })(); |
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| 64 | } |