/**
 * @license
 * Copyright 2018 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
import { assert } from './util';
/**
 * Maps to mapping between the custom object and its name.
 *
 * After registering a custom class, these two maps will add key-value pairs
 * for the class object and the registered name.
 *
 * Therefore we can get the relative registered name by calling
 * getRegisteredName() function.
 *
 * For example:
 * GLOBAL_CUSTOM_OBJECT: {key=registeredName: value=corresponding
 * CustomObjectClass}
 *
 * GLOBAL_CUSTOM_NAMES: {key=CustomObjectClass: value=corresponding
 * registeredName}
 *
 */
const GLOBAL_CUSTOM_OBJECT = new Map();
const GLOBAL_CUSTOM_NAMES = new Map();
/**
 * Serializable defines the serialization contract.
 *
 * TFJS requires serializable classes to return their className when asked
 * to avoid issues with minification.
 */
export class Serializable {
    /**
     * Return the class name for this class to use in serialization contexts.
     *
     * Generally speaking this will be the same thing that constructor.name
     * would have returned.  However, the class name needs to be robust
     * against minification for serialization/deserialization to work properly.
     *
     * There's also places such as initializers.VarianceScaling, where
     * implementation details between different languages led to different
     * class hierarchies and a non-leaf node is used for serialization purposes.
     */
    getClassName() {
        return this.constructor
            .className;
    }
    /**
     * Creates an instance of T from a ConfigDict.
     *
     * This works for most descendants of serializable.  A few need to
     * provide special handling.
     * @param cls A Constructor for the class to instantiate.
     * @param config The Configuration for the object.
     */
    /** @nocollapse */
    static fromConfig(cls, config) {
        return new cls(config);
    }
}
/**
 * Maps string keys to class constructors.
 *
 * Used during (de)serialization from the cross-language JSON format, which
 * requires the class name in the serialization format matches the class
 * names as used in Python, should it exist.
 */
export class SerializationMap {
    constructor() {
        this.classNameMap = {};
    }
    /**
     * Returns the singleton instance of the map.
     */
    static getMap() {
        if (SerializationMap.instance == null) {
            SerializationMap.instance = new SerializationMap();
        }
        return SerializationMap.instance;
    }
    /**
     * Registers the class as serializable.
     */
    static register(cls) {
        SerializationMap.getMap().classNameMap[cls.className] =
            [cls, cls.fromConfig];
    }
}
/**
 * Register a class with the serialization map of TensorFlow.js.
 *
 * This is often used for registering custom Layers, so they can be
 * serialized and deserialized.
 *
 * Example 1. Register the class without package name and specified name.
 *
 * ```js
 * class MyCustomLayer extends tf.layers.Layer {
 *   static className = 'MyCustomLayer';
 *
 *   constructor(config) {
 *     super(config);
 *   }
 * }
 * tf.serialization.registerClass(MyCustomLayer);
 * console.log(tf.serialization.GLOBALCUSTOMOBJECT.get("Custom>MyCustomLayer"));
 * console.log(tf.serialization.GLOBALCUSTOMNAMES.get(MyCustomLayer));
 * ```
 *
 * Example 2. Register the class with package name: "Package" and specified
 * name: "MyLayer".
 * ```js
 * class MyCustomLayer extends tf.layers.Layer {
 *   static className = 'MyCustomLayer';
 *
 *   constructor(config) {
 *     super(config);
 *   }
 * }
 * tf.serialization.registerClass(MyCustomLayer, "Package", "MyLayer");
 * console.log(tf.serialization.GLOBALCUSTOMOBJECT.get("Package>MyLayer"));
 * console.log(tf.serialization.GLOBALCUSTOMNAMES.get(MyCustomLayer));
 * ```
 *
 * Example 3. Register the class with specified name: "MyLayer".
 * ```js
 * class MyCustomLayer extends tf.layers.Layer {
 *   static className = 'MyCustomLayer';
 *
 *   constructor(config) {
 *     super(config);
 *   }
 * }
 * tf.serialization.registerClass(MyCustomLayer, undefined, "MyLayer");
 * console.log(tf.serialization.GLOBALCUSTOMOBJECT.get("Custom>MyLayer"));
 * console.log(tf.serialization.GLOBALCUSTOMNAMES.get(MyCustomLayer));
 * ```
 *
 * Example 4. Register the class with specified package name: "Package".
 * ```js
 * class MyCustomLayer extends tf.layers.Layer {
 *   static className = 'MyCustomLayer';
 *
 *   constructor(config) {
 *     super(config);
 *   }
 * }
 * tf.serialization.registerClass(MyCustomLayer, "Package");
 * console.log(tf.serialization.GLOBALCUSTOMOBJECT
 * .get("Package>MyCustomLayer"));
 * console.log(tf.serialization.GLOBALCUSTOMNAMES
 * .get(MyCustomLayer));
 * ```
 *
 * @param cls The class to be registered. It must have a public static member
 *   called `className` defined and the value must be a non-empty string.
 * @param pkg The pakcage name that this class belongs to. This used to define
 *     the key in GlobalCustomObject. If not defined, it defaults to `Custom`.
 * @param name The name that user specified. It defaults to the actual name of
 *     the class as specified by its static `className` property.
 * @doc {heading: 'Models', subheading: 'Serialization', ignoreCI: true}
 */
export function registerClass(cls, pkg, name) {
    assert(cls.className != null, () => `Class being registered does not have the static className ` +
        `property defined.`);
    assert(typeof cls.className === 'string', () => `className is required to be a string, but got type ` +
        typeof cls.className);
    assert(cls.className.length > 0, () => `Class being registered has an empty-string as its className, ` +
        `which is disallowed.`);
    if (typeof pkg === 'undefined') {
        pkg = 'Custom';
    }
    if (typeof name === 'undefined') {
        name = cls.className;
    }
    const className = name;
    const registerName = pkg + '>' + className;
    SerializationMap.register(cls);
    GLOBAL_CUSTOM_OBJECT.set(registerName, cls);
    GLOBAL_CUSTOM_NAMES.set(cls, registerName);
    return cls;
}
/**
 * Get the registered name of a class. If the class has not been registered,
 * return the class name.
 *
 * @param cls The class we want to get register name for. It must have a public
 *     static member called `className` defined.
 * @returns registered name or class name.
 */
export function getRegisteredName(cls) {
    if (GLOBAL_CUSTOM_NAMES.has(cls)) {
        return GLOBAL_CUSTOM_NAMES.get(cls);
    }
    else {
        return cls.className;
    }
}
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All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport {assert} from './util';\n\n/**\n * Types to support JSON-esque data structures internally.\n *\n * Internally ConfigDict's use camelCase keys and values where the\n * values are class names to be instantiated.  On the python side, these\n * will be snake_case.  Internally we allow Enums into the values for better\n * type safety, but these need to be converted to raw primitives (usually\n * strings) for round-tripping with python.\n *\n * toConfig returns the TS-friendly representation. model.toJSON() returns\n * the pythonic version as that's the portable format.  If you need to\n * python-ify a non-model level toConfig output, you'll need to use a\n * convertTsToPythonic from serialization_utils in -Layers.\n *\n */\nexport declare type ConfigDictValue =\n    boolean | number | string | null | ConfigDictArray | ConfigDict;\nexport declare interface ConfigDict {\n  [key: string]: ConfigDictValue;\n}\nexport declare interface ConfigDictArray extends Array<ConfigDictValue> {}\n\n/**\n * Type to represent the class-type of Serializable objects.\n *\n * Ie the class prototype with access to the constructor and any\n * static members/methods. Instance methods are not listed here.\n *\n * Source for this idea: https://stackoverflow.com/a/43607255\n */\nexport declare type SerializableConstructor<T extends Serializable> = {\n  // tslint:disable-next-line:no-any\n  new (...args: any[]): T; className: string; fromConfig: FromConfigMethod<T>;\n};\nexport declare type FromConfigMethod<T extends Serializable> =\n    (cls: SerializableConstructor<T>, config: ConfigDict) => T;\n\n/**\n * Maps to mapping between the custom object and its name.\n *\n * After registering a custom class, these two maps will add key-value pairs\n * for the class object and the registered name.\n *\n * Therefore we can get the relative registered name by calling\n * getRegisteredName() function.\n *\n * For example:\n * GLOBAL_CUSTOM_OBJECT: {key=registeredName: value=corresponding\n * CustomObjectClass}\n *\n * GLOBAL_CUSTOM_NAMES: {key=CustomObjectClass: value=corresponding\n * registeredName}\n *\n */\nconst GLOBAL_CUSTOM_OBJECT =\n    new Map<string, SerializableConstructor<Serializable>>();\n\nconst GLOBAL_CUSTOM_NAMES =\n    new Map<SerializableConstructor<Serializable>, string>();\n\n/**\n * Serializable defines the serialization contract.\n *\n * TFJS requires serializable classes to return their className when asked\n * to avoid issues with minification.\n */\nexport abstract class Serializable {\n  /**\n   * Return the class name for this class to use in serialization contexts.\n   *\n   * Generally speaking this will be the same thing that constructor.name\n   * would have returned.  However, the class name needs to be robust\n   * against minification for serialization/deserialization to work properly.\n   *\n   * There's also places such as initializers.VarianceScaling, where\n   * implementation details between different languages led to different\n   * class hierarchies and a non-leaf node is used for serialization purposes.\n   */\n  getClassName(): string {\n    return (this.constructor as SerializableConstructor<Serializable>)\n        .className;\n  }\n\n  /**\n   * Return all the non-weight state needed to serialize this object.\n   */\n  abstract getConfig(): ConfigDict;\n\n  /**\n   * Creates an instance of T from a ConfigDict.\n   *\n   * This works for most descendants of serializable.  A few need to\n   * provide special handling.\n   * @param cls A Constructor for the class to instantiate.\n   * @param config The Configuration for the object.\n   */\n  /** @nocollapse */\n  static fromConfig<T extends Serializable>(\n      cls: SerializableConstructor<T>, config: ConfigDict): T {\n    return new cls(config);\n  }\n}\n\n/**\n * Maps string keys to class constructors.\n *\n * Used during (de)serialization from the cross-language JSON format, which\n * requires the class name in the serialization format matches the class\n * names as used in Python, should it exist.\n */\nexport class SerializationMap {\n  private static instance: SerializationMap;\n  classNameMap: {\n    [className: string]:\n        [SerializableConstructor<Serializable>, FromConfigMethod<Serializable>]\n  };\n\n  private constructor() {\n    this.classNameMap = {};\n  }\n\n  /**\n   * Returns the singleton instance of the map.\n   */\n  static getMap(): SerializationMap {\n    if (SerializationMap.instance == null) {\n      SerializationMap.instance = new SerializationMap();\n    }\n    return SerializationMap.instance;\n  }\n\n  /**\n   * Registers the class as serializable.\n   */\n  static register<T extends Serializable>(cls: SerializableConstructor<T>) {\n    SerializationMap.getMap().classNameMap[cls.className] =\n        [cls, cls.fromConfig];\n  }\n}\n\n/**\n * Register a class with the serialization map of TensorFlow.js.\n *\n * This is often used for registering custom Layers, so they can be\n * serialized and deserialized.\n *\n * Example 1. Register the class without package name and specified name.\n *\n * ```js\n * class MyCustomLayer extends tf.layers.Layer {\n *   static className = 'MyCustomLayer';\n *\n *   constructor(config) {\n *     super(config);\n *   }\n * }\n * tf.serialization.registerClass(MyCustomLayer);\n * console.log(tf.serialization.GLOBALCUSTOMOBJECT.get(\"Custom>MyCustomLayer\"));\n * console.log(tf.serialization.GLOBALCUSTOMNAMES.get(MyCustomLayer));\n * ```\n *\n * Example 2. Register the class with package name: \"Package\" and specified\n * name: \"MyLayer\".\n * ```js\n * class MyCustomLayer extends tf.layers.Layer {\n *   static className = 'MyCustomLayer';\n *\n *   constructor(config) {\n *     super(config);\n *   }\n * }\n * tf.serialization.registerClass(MyCustomLayer, \"Package\", \"MyLayer\");\n * console.log(tf.serialization.GLOBALCUSTOMOBJECT.get(\"Package>MyLayer\"));\n * console.log(tf.serialization.GLOBALCUSTOMNAMES.get(MyCustomLayer));\n * ```\n *\n * Example 3. Register the class with specified name: \"MyLayer\".\n * ```js\n * class MyCustomLayer extends tf.layers.Layer {\n *   static className = 'MyCustomLayer';\n *\n *   constructor(config) {\n *     super(config);\n *   }\n * }\n * tf.serialization.registerClass(MyCustomLayer, undefined, \"MyLayer\");\n * console.log(tf.serialization.GLOBALCUSTOMOBJECT.get(\"Custom>MyLayer\"));\n * console.log(tf.serialization.GLOBALCUSTOMNAMES.get(MyCustomLayer));\n * ```\n *\n * Example 4. Register the class with specified package name: \"Package\".\n * ```js\n * class MyCustomLayer extends tf.layers.Layer {\n *   static className = 'MyCustomLayer';\n *\n *   constructor(config) {\n *     super(config);\n *   }\n * }\n * tf.serialization.registerClass(MyCustomLayer, \"Package\");\n * console.log(tf.serialization.GLOBALCUSTOMOBJECT\n * .get(\"Package>MyCustomLayer\"));\n * console.log(tf.serialization.GLOBALCUSTOMNAMES\n * .get(MyCustomLayer));\n * ```\n *\n * @param cls The class to be registered. It must have a public static member\n *   called `className` defined and the value must be a non-empty string.\n * @param pkg The pakcage name that this class belongs to. This used to define\n *     the key in GlobalCustomObject. If not defined, it defaults to `Custom`.\n * @param name The name that user specified. It defaults to the actual name of\n *     the class as specified by its static `className` property.\n * @doc {heading: 'Models', subheading: 'Serialization', ignoreCI: true}\n */\nexport function registerClass<T extends Serializable>(\n    cls: SerializableConstructor<T>, pkg?: string, name?: string) {\n  assert(\n      cls.className != null,\n      () => `Class being registered does not have the static className ` +\n          `property defined.`);\n  assert(\n      typeof cls.className === 'string',\n      () => `className is required to be a string, but got type ` +\n          typeof cls.className);\n  assert(\n      cls.className.length > 0,\n      () => `Class being registered has an empty-string as its className, ` +\n          `which is disallowed.`);\n\n  if (typeof pkg === 'undefined') {\n    pkg = 'Custom';\n  }\n\n  if (typeof name === 'undefined') {\n    name = cls.className;\n  }\n\n  const className = name;\n  const registerName = pkg + '>' + className;\n\n  SerializationMap.register(cls);\n  GLOBAL_CUSTOM_OBJECT.set(registerName, cls);\n  GLOBAL_CUSTOM_NAMES.set(cls, registerName);\n\n  return cls;\n}\n\n/**\n * Get the registered name of a class. If the class has not been registered,\n * return the class name.\n *\n * @param cls The class we want to get register name for. It must have a public\n *     static member called `className` defined.\n * @returns registered name or class name.\n */\nexport function getRegisteredName<T extends Serializable>(\n    cls: SerializableConstructor<T>) {\n  if (GLOBAL_CUSTOM_NAMES.has(cls)) {\n    return GLOBAL_CUSTOM_NAMES.get(cls);\n  } else {\n    return cls.className;\n  }\n}\n"]}