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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@iota/bcs/dist/cjs

Просмотр файла: reader.d.ts

/**
 * Class used for reading BCS data chunk by chunk. Meant to be used
 * by some wrapper, which will make sure that data is valid and is
 * matching the desired format.
 *
 * @example
 * // data for this example is:
 * // { a: u8, b: u32, c: bool, d: u64 }
 *
 * let reader = new BcsReader("647f1a060001ffffe7890423c78a050102030405");
 * let field1 = reader.read8();
 * let field2 = reader.read32();
 * let field3 = reader.read8() === '1'; // bool
 * let field4 = reader.read64();
 * // ....
 *
 * Reading vectors is another deal in bcs. To read a vector, you first need to read
 * its length using {@link readULEB}. Here's an example:
 * @example
 * // data encoded: { field: [1, 2, 3, 4, 5] }
 * let reader = new BcsReader("050102030405");
 * let vec_length = reader.readULEB();
 * let elements = [];
 * for (let i = 0; i < vec_length; i++) {
 *   elements.push(reader.read8());
 * }
 * console.log(elements); // [1,2,3,4,5]
 *
 * @param {String} data HEX-encoded data (serialized BCS)
 */
export declare class BcsReader {
    private dataView;
    private bytePosition;
    /**
     * @param {Uint8Array} data Data to use as a buffer.
     */
    constructor(data: Uint8Array);
    /**
     * Shift current cursor position by `bytes`.
     *
     * @param {Number} bytes Number of bytes to
     * @returns {this} Self for possible chaining.
     */
    shift(bytes: number): this;
    /**
     * Read U8 value from the buffer and shift cursor by 1.
     * @returns
     */
    read8(): number;
    /**
     * Read U16 value from the buffer and shift cursor by 2.
     * @returns
     */
    read16(): number;
    /**
     * Read U32 value from the buffer and shift cursor by 4.
     * @returns
     */
    read32(): number;
    /**
     * Read U64 value from the buffer and shift cursor by 8.
     * @returns
     */
    read64(): string;
    /**
     * Read U128 value from the buffer and shift cursor by 16.
     */
    read128(): string;
    /**
     * Read U128 value from the buffer and shift cursor by 32.
     * @returns
     */
    read256(): string;
    /**
     * Read `num` number of bytes from the buffer and shift cursor by `num`.
     * @param num Number of bytes to read.
     */
    readBytes(num: number): Uint8Array;
    /**
     * Read ULEB value - an integer of varying size. Used for enum indexes and
     * vector lengths.
     * @returns {Number} The ULEB value.
     */
    readULEB(): number;
    /**
     * Read a BCS vector: read a length and then apply function `cb` X times
     * where X is the length of the vector, defined as ULEB in BCS bytes.
     * @param cb Callback to process elements of vector.
     * @returns {Array<Any>} Array of the resulting values, returned by callback.
     */
    readVec(cb: (reader: BcsReader, i: number, length: number) => any): any[];
}

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