You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.0 KiB
62 lines
2.0 KiB
'use strict';
|
|
// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
|
|
require('../modules/es.map');
|
|
require('../modules/es.weak-map');
|
|
var getBuiltIn = require('../internals/get-built-in');
|
|
var uncurryThis = require('../internals/function-uncurry-this');
|
|
var shared = require('../internals/shared');
|
|
|
|
var Map = getBuiltIn('Map');
|
|
var WeakMap = getBuiltIn('WeakMap');
|
|
var push = uncurryThis([].push);
|
|
|
|
var metadata = shared('metadata');
|
|
var store = metadata.store || (metadata.store = new WeakMap());
|
|
|
|
var getOrCreateMetadataMap = function (target, targetKey, create) {
|
|
var targetMetadata = store.get(target);
|
|
if (!targetMetadata) {
|
|
if (!create) return;
|
|
store.set(target, targetMetadata = new Map());
|
|
}
|
|
var keyMetadata = targetMetadata.get(targetKey);
|
|
if (!keyMetadata) {
|
|
if (!create) return;
|
|
targetMetadata.set(targetKey, keyMetadata = new Map());
|
|
} return keyMetadata;
|
|
};
|
|
|
|
var ordinaryHasOwnMetadata = function (MetadataKey, O, P) {
|
|
var metadataMap = getOrCreateMetadataMap(O, P, false);
|
|
return metadataMap === undefined ? false : metadataMap.has(MetadataKey);
|
|
};
|
|
|
|
var ordinaryGetOwnMetadata = function (MetadataKey, O, P) {
|
|
var metadataMap = getOrCreateMetadataMap(O, P, false);
|
|
return metadataMap === undefined ? undefined : metadataMap.get(MetadataKey);
|
|
};
|
|
|
|
var ordinaryDefineOwnMetadata = function (MetadataKey, MetadataValue, O, P) {
|
|
getOrCreateMetadataMap(O, P, true).set(MetadataKey, MetadataValue);
|
|
};
|
|
|
|
var ordinaryOwnMetadataKeys = function (target, targetKey) {
|
|
var metadataMap = getOrCreateMetadataMap(target, targetKey, false);
|
|
var keys = [];
|
|
if (metadataMap) metadataMap.forEach(function (_, key) { push(keys, key); });
|
|
return keys;
|
|
};
|
|
|
|
var toMetadataKey = function (it) {
|
|
return it === undefined || typeof it == 'symbol' ? it : String(it);
|
|
};
|
|
|
|
module.exports = {
|
|
store: store,
|
|
getMap: getOrCreateMetadataMap,
|
|
has: ordinaryHasOwnMetadata,
|
|
get: ordinaryGetOwnMetadata,
|
|
set: ordinaryDefineOwnMetadata,
|
|
keys: ordinaryOwnMetadataKeys,
|
|
toKey: toMetadataKey
|
|
};
|
|
|