Class Serializer

Returns the buffered bytes

Serializes a boolean value.

BCS layout for "boolean": One byte. "0x01" for True and "0x00" for False.

Serializes an array of bytes.

BCS layout for "bytes": bytes_length | bytes. bytes_length is the length of the bytes array that is uleb128 encoded. bytes_length is a u32 integer.

Serializes an array of bytes with known length. Therefore length doesn't need to be serialized to help deserialization. When deserializing, the number of bytes to deserialize needs to be passed in.

Serializes a string. UTF8 string is supported. Serializes the string's bytes length "l" first, and then serializes "l" bytes of the string content.

BCS layout for "string": string_length | string_content. string_length is the bytes length of the string that is uleb128 encoded. string_length is a u32 integer.

Example

const serializer = new Serializer();
serializer.serializeStr("çå∞≠¢õß∂ƒ∫");
assert(serializer.getBytes() === new Uint8Array([24, 0xc3, 0xa7, 0xc3, 0xa5, 0xe2, 0x88, 0x9e,
0xe2, 0x89, 0xa0, 0xc2, 0xa2, 0xc3, 0xb5, 0xc3, 0x9f, 0xe2, 0x88, 0x82, 0xc6, 0x92, 0xe2, 0x88, 0xab]));

Serializes a uint128 number.

BCS layout for "uint128": Sixteen bytes. Binary format in little-endian representation.

Serializes a uint16 number.

BCS layout for "uint16": Two bytes. Binary format in little-endian representation.

Example

const serializer = new Serializer();
serializer.serializeU16(4660);
assert(serializer.getBytes() === new Uint8Array([0x34, 0x12]));

Serializes a uint256 number.

BCS layout for "uint256": Sixteen bytes. Binary format in little-endian representation.

Serializes a uint32 number.

BCS layout for "uint32": Four bytes. Binary format in little-endian representation.

Example

const serializer = new Serializer();
serializer.serializeU32(305419896);
assert(serializer.getBytes() === new Uint8Array([0x78, 0x56, 0x34, 0x12]));

Serializes a uint32 number with uleb128.

BCS use uleb128 encoding in two cases: (1) lengths of variable-length sequences and (2) tags of enum values

Serializes a uint64 number.

BCS layout for "uint64": Eight bytes. Binary format in little-endian representation.

Example

const serializer = new Serializer();
serializer.serializeU64(1311768467750121216);
assert(serializer.getBytes() === new Uint8Array([0x00, 0xEF, 0xCD, 0xAB, 0x78, 0x56, 0x34, 0x12]));

Serializes a uint8 number.

BCS layout for "uint8": One byte. Binary format in little-endian representation.