@hazae41/box/dist/esm/mods/move/index.mjs

Rust-like Box and similar objects for TypeScript

import { Deferred } from '../deferred/index.mjs';

var _a;
class MovedError extends Error {
    #class = _a;
    name = this.#class.name;
    constructor() {
        super(`Resource is moved`);
    }
}
_a = MovedError;
/**
 * A movable reference
 */
class Move {
    value;
    clean;
    #moved = false;
    /**
     * An movable reference
     * @param value
     */
    constructor(value, clean) {
        this.value = value;
        this.clean = clean;
    }
    static wrap(value) {
        return new Move(value, value);
    }
    static from(value) {
        return new Move(value.get(), value);
    }
    static with(value, clean) {
        return new Move(value, new Deferred(() => clean(value)));
    }
    [Symbol.dispose]() {
        if (this.#moved)
            return;
        this.clean[Symbol.dispose]();
    }
    async [Symbol.asyncDispose]() {
        this[Symbol.dispose]();
    }
    get moved() {
        return this.#moved;
    }
    /**
     * Get the value
     * @returns T
     */
    get() {
        return this.value;
    }
    /**
     * Get the value or null-like if not owned
     * @returns T or null-like if not owned
     */
    getOrNull() {
        if (this.#moved)
            return;
        return this.value;
    }
    /**
     * Get the value or throw if not owned
     * @returns T
     * @throws NotOwnedError if not owned
     */
    getOrThrow() {
        if (this.#moved)
            throw new MovedError();
        return this.value;
    }
    checkOrNull() {
        if (this.#moved)
            return;
        return this;
    }
    checkOrThrow() {
        if (this.#moved)
            throw new MovedError();
        return this;
    }
    /**
     * Get the value and set this as moved or null-like if not owned
     * @returns T or null-like if not owned
     */
    unwrapOrNull() {
        if (this.#moved)
            return;
        this.#moved = true;
        return this.value;
    }
    /**
     * Get the value and set this as moved or throw if not owned
     * @returns T
     * @throws DroppedError if not owned
     */
    unwrapOrThrow() {
        if (this.#moved)
            throw new MovedError();
        this.#moved = true;
        return this.value;
    }
    /**
     * Move the value to a new Unpin and set this one as moved or null-like if already moved
     * @returns Unpin<T> or null-like if moved
     */
    moveOrNull() {
        if (this.#moved)
            return;
        this.#moved = true;
        return new Move(this.value, this.clean);
    }
    /**
     * Move the value to a new Unpin and set this one as moved or throw if already moved
     * @returns Unpin<T>
     * @throws DroppedError if already moved
     */
    moveOrThrow() {
        if (this.#moved)
            throw new MovedError();
        this.#moved = true;
        return new Move(this.value, this.clean);
    }
}

export { Move, MovedError };
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