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Diffstat (limited to 'node_modules/core-js/library/modules/_collection-weak.js')
| -rw-r--r-- | node_modules/core-js/library/modules/_collection-weak.js | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/_collection-weak.js b/node_modules/core-js/library/modules/_collection-weak.js new file mode 100644 index 000000000..a8597e64d --- /dev/null +++ b/node_modules/core-js/library/modules/_collection-weak.js @@ -0,0 +1,83 @@ +'use strict'; +var redefineAll = require('./_redefine-all') + , getWeak = require('./_meta').getWeak + , anObject = require('./_an-object') + , isObject = require('./_is-object') + , anInstance = require('./_an-instance') + , forOf = require('./_for-of') + , createArrayMethod = require('./_array-methods') + , $has = require('./_has') + , arrayFind = createArrayMethod(5) + , arrayFindIndex = createArrayMethod(6) + , id = 0; + +// fallback for uncaught frozen keys +var uncaughtFrozenStore = function(that){ + return that._l || (that._l = new UncaughtFrozenStore); +}; +var UncaughtFrozenStore = function(){ + this.a = []; +}; +var findUncaughtFrozen = function(store, key){ + return arrayFind(store.a, function(it){ + return it[0] === key; + }); +}; +UncaughtFrozenStore.prototype = { + get: function(key){ + var entry = findUncaughtFrozen(this, key); + if(entry)return entry[1]; + }, + has: function(key){ + return !!findUncaughtFrozen(this, key); + }, + set: function(key, value){ + var entry = findUncaughtFrozen(this, key); + if(entry)entry[1] = value; + else this.a.push([key, value]); + }, + 'delete': function(key){ + var index = arrayFindIndex(this.a, function(it){ + return it[0] === key; + }); + if(~index)this.a.splice(index, 1); + return !!~index; + } +}; + +module.exports = { + getConstructor: function(wrapper, NAME, IS_MAP, ADDER){ + var C = wrapper(function(that, iterable){ + anInstance(that, C, NAME, '_i'); + that._i = id++; // collection id + that._l = undefined; // leak store for uncaught frozen objects + if(iterable != undefined)forOf(iterable, IS_MAP, that[ADDER], that); + }); + redefineAll(C.prototype, { + // 23.3.3.2 WeakMap.prototype.delete(key) + // 23.4.3.3 WeakSet.prototype.delete(value) + 'delete': function(key){ + if(!isObject(key))return false; + var data = getWeak(key); + if(data === true)return uncaughtFrozenStore(this)['delete'](key); + return data && $has(data, this._i) && delete data[this._i]; + }, + // 23.3.3.4 WeakMap.prototype.has(key) + // 23.4.3.4 WeakSet.prototype.has(value) + has: function has(key){ + if(!isObject(key))return false; + var data = getWeak(key); + if(data === true)return uncaughtFrozenStore(this).has(key); + return data && $has(data, this._i); + } + }); + return C; + }, + def: function(that, key, value){ + var data = getWeak(anObject(key), true); + if(data === true)uncaughtFrozenStore(that).set(key, value); + else data[that._i] = value; + return that; + }, + ufstore: uncaughtFrozenStore +};
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