| 1 | {"version":3,"file":"reactiveVars.js","sourceRoot":"","sources":["../../../src/cache/inmemory/reactiveVars.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,GAAG,EAAgC,MAAM,UAAU,CAAC;AAC7D,OAAO,EAAE,IAAI,EAAE,MAAM,cAAc,CAAC;AAepC,MAAM,CAAC,IAAM,SAAS,GAAG,IAAI,IAAI,EAAoB,CAAC;AAEtD,IAAM,YAAY,GAAG,IAAI,OAAO,EAG5B,CAAC;AAEL,SAAS,YAAY,CAAC,KAAuB;IAC3C,IAAI,IAAI,GAAG,YAAY,CAAC,GAAG,CAAC,KAAK,CAAE,CAAC;IACpC,IAAI,CAAC,IAAI,EAAE;QACT,YAAY,CAAC,GAAG,CAAC,KAAK,EAAE,IAAI,GAAG;YAC7B,IAAI,EAAE,IAAI,GAAG;YACb,GAAG,EAAE,GAAG,EAAE;SACX,CAAC,CAAC;KACJ;IACD,OAAO,IAAI,CAAC;AACd,CAAC;AAED,MAAM,UAAU,WAAW,CAAC,KAAuB;IACjD,YAAY,CAAC,KAAK,CAAC,CAAC,IAAI,CAAC,OAAO,CAAC,UAAA,EAAE,IAAI,OAAA,EAAE,CAAC,WAAW,CAAC,KAAK,CAAC,EAArB,CAAqB,CAAC,CAAC;AAChE,CAAC;AAUD,MAAM,UAAU,WAAW,CAAC,KAAuB;IACjD,YAAY,CAAC,KAAK,CAAC,CAAC,IAAI,CAAC,OAAO,CAAC,UAAA,EAAE,IAAI,OAAA,EAAE,CAAC,WAAW,CAAC,KAAK,CAAC,EAArB,CAAqB,CAAC,CAAC;AAChE,CAAC;AAED,MAAM,UAAU,OAAO,CAAI,KAAQ;IACjC,IAAM,MAAM,GAAG,IAAI,GAAG,EAAoB,CAAC;IAC3C,IAAM,SAAS,GAAG,IAAI,GAAG,EAAuB,CAAC;IAEjD,IAAM,EAAE,GAAmB,UAAU,QAAQ;QAC3C,IAAI,SAAS,CAAC,MAAM,GAAG,CAAC,EAAE;YACxB,IAAI,KAAK,KAAK,QAAQ,EAAE;gBACtB,KAAK,GAAG,QAAS,CAAC;gBAClB,MAAM,CAAC,OAAO,CAAC,UAAA,KAAK;oBAIlB,YAAY,CAAC,KAAK,CAAC,CAAC,GAAG,CAAC,KAAK,CAAC,EAAE,CAAC,CAAC;oBAGlC,SAAS,CAAC,KAAK,CAAC,CAAC;gBACnB,CAAC,CAAC,CAAC;gBAEH,IAAM,YAAY,GAAG,KAAK,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC;gBAC3C,SAAS,CAAC,KAAK,EAAE,CAAC;gBAClB,YAAY,CAAC,OAAO,CAAC,UAAA,QAAQ,IAAI,OAAA,QAAQ,CAAC,KAAK,CAAC,EAAf,CAAe,CAAC,CAAC;aACnD;SACF;aAAM;YAIL,IAAM,KAAK,GAAG,SAAS,CAAC,QAAQ,EAAE,CAAC;YACnC,IAAI,KAAK,EAAE;gBACT,MAAM,CAAC,KAAK,CAAC,CAAC;gBACd,YAAY,CAAC,KAAK,CAAC,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC;aAC7B;SACF;QAED,OAAO,KAAK,CAAC;IACf,CAAC,CAAC;IAEF,EAAE,CAAC,YAAY,GAAG,UAAA,QAAQ;QACxB,SAAS,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;QACxB,OAAO;YACL,SAAS,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC;QAC7B,CAAC,CAAC;IACJ,CAAC,CAAC;IAEF,IAAM,MAAM,GAAG,EAAE,CAAC,WAAW,GAAG,UAAA,KAAK;QACnC,MAAM,CAAC,GAAG,CAAC,KAAK,CAAC,CAAC;QAClB,YAAY,CAAC,KAAK,CAAC,CAAC,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC;QACjC,OAAO,EAAE,CAAC;IACZ,CAAC,CAAC;IAEF,EAAE,CAAC,WAAW,GAAG,UAAA,KAAK,IAAI,OAAA,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,EAApB,CAAoB,CAAC;IAE/C,OAAO,EAAE,CAAC;AACZ,CAAC;AAQD,SAAS,SAAS,CAAC,KAAoB;IACrC,IAAI,KAAK,CAAC,gBAAgB,EAAE;QAC1B,KAAK,CAAC,gBAAgB,EAAE,CAAC;KAC1B;AACH,CAAC","sourcesContent":["import { dep, OptimisticDependencyFunction } from \"optimism\";\nimport { Slot } from \"@wry/context\";\nimport { InMemoryCache } from \"./inMemoryCache\";\nimport { ApolloCache } from '../../core';\n\nexport interface ReactiveVar<T> {\n (newValue?: T): T;\n onNextChange(listener: ReactiveListener<T>): () => void;\n attachCache(cache: ApolloCache<any>): this;\n forgetCache(cache: ApolloCache<any>): boolean;\n}\n\nexport type ReactiveListener<T> = (value: T) => any;\n\n// Contextual Slot that acquires its value when custom read functions are\n// called in Policies#readField.\nexport const cacheSlot = new Slot<ApolloCache<any>>();\n\nconst cacheInfoMap = new WeakMap<ApolloCache<any>, {\n vars: Set<ReactiveVar<any>>;\n dep: OptimisticDependencyFunction<ReactiveVar<any>>;\n}>();\n\nfunction getCacheInfo(cache: ApolloCache<any>) {\n let info = cacheInfoMap.get(cache)!;\n if (!info) {\n cacheInfoMap.set(cache, info = {\n vars: new Set,\n dep: dep(),\n });\n }\n return info;\n}\n\nexport function forgetCache(cache: ApolloCache<any>) {\n getCacheInfo(cache).vars.forEach(rv => rv.forgetCache(cache));\n}\n\n// Calling forgetCache(cache) serves to silence broadcasts and allows the\n// cache to be garbage collected. However, the varsByCache WeakMap\n// preserves the set of reactive variables that were previously associated\n// with this cache, which makes it possible to \"recall\" the cache at a\n// later time, by reattaching it to those variables. If the cache has been\n// garbage collected in the meantime, because it is no longer reachable,\n// you won't be able to call recallCache(cache), and the cache will\n// automatically disappear from the varsByCache WeakMap.\nexport function recallCache(cache: ApolloCache<any>) {\n getCacheInfo(cache).vars.forEach(rv => rv.attachCache(cache));\n}\n\nexport function makeVar<T>(value: T): ReactiveVar<T> {\n const caches = new Set<ApolloCache<any>>();\n const listeners = new Set<ReactiveListener<T>>();\n\n const rv: ReactiveVar<T> = function (newValue) {\n if (arguments.length > 0) {\n if (value !== newValue) {\n value = newValue!;\n caches.forEach(cache => {\n // Invalidate any fields with custom read functions that\n // consumed this variable, so query results involving those\n // fields will be recomputed the next time we read them.\n getCacheInfo(cache).dep.dirty(rv);\n // Broadcast changes to any caches that have previously read\n // from this variable.\n broadcast(cache);\n });\n // Finally, notify any listeners added via rv.onNextChange.\n const oldListeners = Array.from(listeners);\n listeners.clear();\n oldListeners.forEach(listener => listener(value));\n }\n } else {\n // When reading from the variable, obtain the current cache from\n // context via cacheSlot. This isn't entirely foolproof, but it's\n // the same system that powers varDep.\n const cache = cacheSlot.getValue();\n if (cache) {\n attach(cache);\n getCacheInfo(cache).dep(rv);\n }\n }\n\n return value;\n };\n\n rv.onNextChange = listener => {\n listeners.add(listener);\n return () => {\n listeners.delete(listener);\n };\n };\n\n const attach = rv.attachCache = cache => {\n caches.add(cache);\n getCacheInfo(cache).vars.add(rv);\n return rv;\n };\n\n rv.forgetCache = cache => caches.delete(cache);\n\n return rv;\n}\n\ntype Broadcastable = ApolloCache<any> & {\n // This method is protected in InMemoryCache, which we are ignoring, but\n // we still want some semblance of type safety when we call it.\n broadcastWatches?: InMemoryCache[\"broadcastWatches\"];\n};\n\nfunction broadcast(cache: Broadcastable) {\n if (cache.broadcastWatches) {\n cache.broadcastWatches();\n }\n}\n"]} |