@girders-elements/core/dist/es5/vendor/zippa/zipper.js

Girders Elements is an architectural framework that assists with building data-driven apps with React or React Native.

Object.defineProperty(exports,"__esModule",{value:true});exports.makeItem=exports.replace=exports.edit=exports.appendChild=exports.insertChild=exports.insertRight=exports.insertLeft=exports.prev=exports.next=exports.root=exports.up=exports.canGoUp=exports.canGoRight=exports.canGoLeft=exports.isRightmost=exports.isLeftmost=exports.isNotTop=exports.isTop=exports.isEnd=exports.getChildren=exports.isLeaf=exports.value=exports.whilst=undefined;var _extends=Object.assign||function(target){for(var i=1;i<arguments.length;i++){var source=arguments[i];for(var key in source){if(Object.prototype.hasOwnProperty.call(source,key)){target[key]=source[key];}}}return target;};exports.




























































































zipperFrom=zipperFrom;exports.








isBranch=isBranch;exports.














































































































leftmost=leftmost;exports.






























left=left;exports.
































right=right;exports.






























rightmost=rightmost;exports.



























canGoDown=canGoDown;exports.











down=down;exports.








































































































































































remove=remove;exports.
















































































































































































































































































































































































makeZipper=makeZipper;var _=require('ramda/src/__');var _2=_interopRequireDefault(_);var _assoc=require('ramda/src/assoc');var _assoc2=_interopRequireDefault(_assoc);var _of=require('ramda/src/of');var _of2=_interopRequireDefault(_of);var _always=require('ramda/src/always');var _always2=_interopRequireDefault(_always);var _call=require('ramda/src/call');var _call2=_interopRequireDefault(_call);var _cond=require('ramda/src/cond');var _cond2=_interopRequireDefault(_cond);var _converge=require('ramda/src/converge');var _converge2=_interopRequireDefault(_converge);var _complement=require('ramda/src/complement');var _complement2=_interopRequireDefault(_complement);var _curry=require('ramda/src/curry');var _curry2=_interopRequireDefault(_curry);var _either=require('ramda/src/either');var _either2=_interopRequireDefault(_either);var _head=require('ramda/src/head');var _head2=_interopRequireDefault(_head);var _equals=require('ramda/src/equals');var _equals2=_interopRequireDefault(_equals);var _identity=require('ramda/src/identity');var _identity2=_interopRequireDefault(_identity);var _init=require('ramda/src/init');var _init2=_interopRequireDefault(_init);var _ifElse=require('ramda/src/ifElse');var _ifElse2=_interopRequireDefault(_ifElse);var _last=require('ramda/src/last');var _last2=_interopRequireDefault(_last);var _or=require('ramda/src/or');var _or2=_interopRequireDefault(_or);var _prop=require('ramda/src/prop');var _prop2=_interopRequireDefault(_prop);var _juxt=require('ramda/src/juxt');var _juxt2=_interopRequireDefault(_juxt);var _tail=require('ramda/src/tail');var _tail2=_interopRequireDefault(_tail);var _pipe=require('ramda/src/pipe');var _pipe2=_interopRequireDefault(_pipe);var _merge=require('ramda/src/merge');var _merge2=_interopRequireDefault(_merge);var _T=require('ramda/src/T');var _T2=_interopRequireDefault(_T);var _when=require('ramda/src/when');var _when2=_interopRequireDefault(_when);var _unless=require('ramda/src/unless');var _unless2=_interopRequireDefault(_unless);var _until=require('ramda/src/until');var _until2=_interopRequireDefault(_until);var _unnest=require('ramda/src/unnest');var _unnest2=_interopRequireDefault(_unnest);function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}var TOP=null;var END='END';function isEmpty(arr){return!arr.length;}var whilst=exports.whilst=(0,_curry2.default)(function(predicate,fn,value){var curr=value;while(predicate(curr)){curr=fn(curr);}return curr;});var TOPPATH={left:[],right:[],parentItems:TOP,parentPath:TOP,changed:false};function Zipper(item,path,meta){this.item=item;this.path=path;this.meta=meta;}var getItem=(0,_prop2.default)('item');var value=exports.value=getItem;var getPath=(0,_prop2.default)('path');var getMeta=(0,_prop2.default)('meta');var sideEffect=(0,_curry2.default)(function(fn,x){fn(x);return x;});var _raiser=function _raiser(msg){return function(){throw new Error(msg);};};var raise=(0,_pipe2.default)(_raiser,sideEffect);function zipperFrom(oldLoc,newItem,path,meta){return new Zipper(newItem,path||getPath(oldLoc),meta||getMeta(oldLoc));}function isBranch(zipper){return getMeta(zipper).isBranch(getItem(zipper));}var isLeaf=exports.isLeaf=(0,_complement2.default)(isBranch);var _getChildrenFn=(0,_pipe2.default)(getMeta,(0,_prop2.default)('getChildren'));var getChildren=exports.getChildren=(0,_pipe2.default)((0,_when2.default)(isLeaf,raise('Tried getting children of a leaf')),(0,_converge2.default)(_call2.default,[_getChildrenFn,getItem]));function _makeItem(z,item,children){return getMeta(z).makeItem(item,children);}var isEnd=exports.isEnd=(0,_pipe2.default)(getPath,(0,_equals2.default)(END));var _parentItemsFromPath=(0,_prop2.default)('parentItems');var _parent=(0,_pipe2.default)(_parentItemsFromPath,_last2.default);var _parentPath=(0,_prop2.default)('parentPath');var getParentItems=(0,_pipe2.default)(getPath,(0,_when2.default)((0,_equals2.default)(END),raise('Can\'t get parent items from end path.')),_parentItemsFromPath);var getParent=(0,_pipe2.default)(getPath,_parent);var getParentPath=(0,_pipe2.default)(getPath,_parentPath);var isTop=exports.isTop=(0,_pipe2.default)(getParentItems,(0,_equals2.default)(TOP));var isNotTop=exports.isNotTop=(0,_complement2.default)(isTop);var _leftsFromPath=(0,_pipe2.default)((0,_prop2.default)('left'),(0,_or2.default)(_2.default,[]));var _rightsFromPath=(0,_pipe2.default)((0,_prop2.default)('right'),(0,_or2.default)(_2.default,[]));var lefts=(0,_pipe2.default)(getPath,_leftsFromPath);var rights=(0,_pipe2.default)(getPath,_rightsFromPath);var hasChanged=(0,_pipe2.default)(getPath,(0,_prop2.default)('changed'),Boolean);var isUnchanged=(0,_complement2.default)(hasChanged);var isNotEmpty=(0,_complement2.default)(isEmpty);var isLeftmost=exports.isLeftmost=(0,_pipe2.default)(lefts,isEmpty);var isRightmost=exports.isRightmost=(0,_pipe2.default)(rights,isEmpty);var canGoLeft=exports.canGoLeft=(0,_complement2.default)(isLeftmost);var canGoRight=exports.canGoRight=(0,_complement2.default)(isRightmost);function leftmost(zipper){if(isTop(zipper)||isLeftmost(zipper))return zipper;var path=getPath(zipper);var _lefts=_leftsFromPath(path);var _rights=_rightsFromPath(path);var item=getItem(zipper);var leftMost=(0,_head2.default)(_lefts);var newLeft=[];var newRight=(0,_tail2.default)(_lefts).concat([item],_rights);return zipperFrom(zipper,leftMost,(0,_merge2.default)(path,{left:newLeft,right:newRight}));}function left(zipper){if(isEnd(zipper))return zipper;if(isLeftmost(zipper))return null;var item=getItem(zipper);var path=getPath(zipper);var _lefts=_leftsFromPath(path);var _rights=_rightsFromPath(path);var leftSibling=(0,_last2.default)(_lefts);var newLeft=(0,_init2.default)(_lefts);var newRight=[item].concat(_rights);return zipperFrom(zipper,leftSibling,(0,_merge2.default)(path,{left:newLeft,right:newRight}));}function right(zipper){if(isEnd(zipper))return zipper;if(isRightmost(zipper))return null;var item=getItem(zipper);var path=getPath(zipper);var _lefts=_leftsFromPath(path);var _rights=_rightsFromPath(path);var rightSibling=(0,_head2.default)(_rights);var newLeft=_lefts.concat([item]);var newRight=(0,_tail2.default)(_rights);return zipperFrom(zipper,rightSibling,(0,_merge2.default)(path,{left:newLeft,right:newRight}));}function rightmost(zipper){if(isRightmost(zipper))return zipper;var path=getPath(zipper);var _rights=_rightsFromPath(path);var _lefts=_leftsFromPath(path);var item=getItem(zipper);var rightMost=(0,_last2.default)(_rights);var newLeft=_lefts.concat([item],(0,_init2.default)(_rights));var newRight=[];return zipperFrom(zipper,rightMost,(0,_merge2.default)(path,{left:newLeft,right:newRight}));}function canGoDown(ipper){return isBranch(ipper)&&isNotEmpty(getChildren(ipper));}function down(zipper){if(!isBranch(zipper))return null;var item=getItem(zipper);var path=getPath(zipper);var children=getChildren(zipper);var newLeft=[];var newRight=(0,_tail2.default)(children);var newLoc=zipperFrom(zipper,(0,_head2.default)(children),(0,_merge2.default)(path,{left:newLeft,right:newRight,parentItems:(_parentItemsFromPath(path)||[]).concat([item]),parentPath:path}));return newLoc;}function _insertLeft(insertItem,zipper){if(isTop(zipper)){throw new Error('Tried inserting left of top');}var item=getItem(zipper);var path=getPath(zipper);var _lefts=_leftsFromPath(path);return zipperFrom(zipper,item,(0,_merge2.default)(path,{left:_lefts.concat([insertItem]),changed:true}));}function _insertRight(insertItem,zipper){if(isTop(zipper)){throw new Error('Tried inserting left of top');}var item=getItem(zipper);var path=getPath(zipper);var _rights=_rightsFromPath(path);return zipperFrom(zipper,item,(0,_merge2.default)(path,{right:[insertItem].concat(_rights),changed:true}));}function _replace(_replaceWith,zipper){if(getItem(zipper)===_replaceWith)return zipper;return zipperFrom(zipper,_replaceWith,(0,_assoc2.default)('changed',true,getPath(zipper)));}function _edit(fn,zipper){return _replace(fn(getItem(zipper)),zipper);}var canGoUp=exports.canGoUp=isNotTop;var _unchangedUp=(0,_converge2.default)(zipperFrom,[_identity2.default,getParent,getParentPath]);var itemsOnCurrentLevel=(0,_pipe2.default)((0,_juxt2.default)([lefts,(0,_pipe2.default)(getItem,_of2.default),rights]),_unnest2.default);var makeParentItem=(0,_converge2.default)(_makeItem,[_identity2.default,getParent,itemsOnCurrentLevel]);var up=exports.up=(0,_cond2.default)([[(0,_or2.default)(isTop,isEnd),(0,_always2.default)(null)],[isUnchanged,_unchangedUp],[_T2.default,(0,_converge2.default)(zipperFrom,[_identity2.default,makeParentItem,(0,_pipe2.default)(getParentPath,(0,_assoc2.default)('changed',true))])]]);var root=exports.root=(0,_unless2.default)(isEnd,whilst(isNotTop,up));var toEnd=function toEnd(z){return zipperFrom(z,getItem(z),END);};var nextUp=(0,_pipe2.default)((0,_until2.default)((0,_either2.default)(isTop,canGoRight),up),(0,_ifElse2.default)(isTop,toEnd,right));var next=exports.next=(0,_cond2.default)([[isEnd,_identity2.default],[canGoDown,down],[canGoRight,right],[_T2.default,nextUp]]);var _goToRightmostChild=(0,_pipe2.default)(down,rightmost);var prev=exports.prev=(0,_ifElse2.default)(canGoLeft,(0,_pipe2.default)(left,whilst(isBranch,_goToRightmostChild)),up);function remove(zipper){if(isTop(zipper)){throw new Error('Can\'t remove top.');}if(isEnd(zipper))throw new Error('Can\'t remove end');var path=getPath(zipper);var _lefts=_leftsFromPath(path);if(_lefts.length){var leftSibling=zipperFrom(zipper,(0,_last2.default)(_lefts),(0,_merge2.default)(path,{left:(0,_init2.default)(_lefts),changed:true}));return whilst(isBranch,_goToRightmostChild,leftSibling);}else{var _rights=_rightsFromPath(path);var parentPath=_parentPath(path);var parent=_parent(path);return zipperFrom(zipper,_makeItem(zipper,parent,_rights),isTop(zipper)?parentPath:(0,_assoc2.default)('changed',true,parentPath));}}function _insertChild(item,z){var newChildren=[item].concat(getChildren(z));return _replace(_makeItem(z,item,newChildren),z);}function _appendChild(item,z){var newChildren=getChildren(z).concat([item]);return _replace(_makeItem(z,item,newChildren),z);}function makeNullaryMethod(fn){return function nullaryZipperMethod(){return fn(this);};}function makeUnaryMethod(fn){return function unaryZipperMethod(x){return fn(x,this);};}_extends(Zipper.prototype,{value:makeNullaryMethod(value),root:makeNullaryMethod(root),up:makeNullaryMethod(up),down:makeNullaryMethod(down),left:makeNullaryMethod(left),right:makeNullaryMethod(right),leftmost:makeNullaryMethod(leftmost),rightmost:makeNullaryMethod(rightmost),next:makeNullaryMethod(next),prev:makeNullaryMethod(prev),isEnd:makeNullaryMethod(isEnd),isTop:makeNullaryMethod(isTop),isBranch:makeNullaryMethod(isBranch),isLeaf:makeNullaryMethod(isLeaf),isLeftmost:makeNullaryMethod(isLeftmost),isRightmost:makeNullaryMethod(isRightmost),canGoUp:makeNullaryMethod(canGoUp),canGoLeft:makeNullaryMethod(canGoLeft),canGoRight:makeNullaryMethod(canGoRight),canGoDown:makeNullaryMethod(canGoDown),edit:makeUnaryMethod(_edit),replace:makeUnaryMethod(_replace),insertLeft:makeUnaryMethod(_insertLeft),insertRight:makeUnaryMethod(_insertRight),insertChild:makeUnaryMethod(_insertChild),appendChild:makeUnaryMethod(_appendChild),remove:makeNullaryMethod(remove)});function makeZipper(_isBranch,_getChildren,_makeItem){
function makeConcreteZipper(item){
return new Zipper(
item,
TOPPATH,
{
isBranch:_isBranch,
getChildren:_getChildren,
makeItem:_makeItem});


}
makeConcreteZipper.from=makeConcreteZipper;
return makeConcreteZipper;
}











var insertLeft=exports.insertLeft=(0,_curry2.default)(_insertLeft);









var insertRight=exports.insertRight=(0,_curry2.default)(_insertRight);









var insertChild=exports.insertChild=(0,_curry2.default)(_insertChild);








var appendChild=exports.appendChild=(0,_curry2.default)(_appendChild);











var edit=exports.edit=(0,_curry2.default)(_edit);









var replace=exports.replace=(0,_curry2.default)(_replace);

var makeItem=exports.makeItem=(0,_curry2.default)(_makeItem);exports.default=

makeZipper;