@solana/spl-token
Version:
SPL Token Program JS API
63 lines • 3.06 kB
JavaScript
import { struct, u8 } from '@solana/buffer-layout';
import { publicKey } from '@solana/buffer-layout-utils';
import { PublicKey, TransactionInstruction } from '@solana/web3.js';
import { TOKEN_2022_PROGRAM_ID, programSupportsExtensions } from '../../constants.js';
import { TokenUnsupportedInstructionError } from '../../errors.js';
import { TokenInstruction } from '../../instructions/types.js';
import { addSigners } from '../../instructions/internal.js';
export var MetadataPointerInstruction;
(function (MetadataPointerInstruction) {
MetadataPointerInstruction[MetadataPointerInstruction["Initialize"] = 0] = "Initialize";
MetadataPointerInstruction[MetadataPointerInstruction["Update"] = 1] = "Update";
})(MetadataPointerInstruction || (MetadataPointerInstruction = {}));
export const initializeMetadataPointerData = struct([
// prettier-ignore
u8('instruction'),
u8('metadataPointerInstruction'),
publicKey('authority'),
publicKey('metadataAddress'),
]);
/**
* Construct an Initialize MetadataPointer instruction
*
* @param mint Token mint account
* @param authority Optional Authority that can set the metadata address
* @param metadataAddress Optional Account address that holds the metadata
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
export function createInitializeMetadataPointerInstruction(mint, authority, metadataAddress, programId) {
if (!programSupportsExtensions(programId)) {
throw new TokenUnsupportedInstructionError();
}
const keys = [{ pubkey: mint, isSigner: false, isWritable: true }];
const data = Buffer.alloc(initializeMetadataPointerData.span);
initializeMetadataPointerData.encode({
instruction: TokenInstruction.MetadataPointerExtension,
metadataPointerInstruction: MetadataPointerInstruction.Initialize,
authority: authority ?? PublicKey.default,
metadataAddress: metadataAddress ?? PublicKey.default,
}, data);
return new TransactionInstruction({ keys, programId, data: data });
}
export const updateMetadataPointerData = struct([
// prettier-ignore
u8('instruction'),
u8('metadataPointerInstruction'),
publicKey('metadataAddress'),
]);
export function createUpdateMetadataPointerInstruction(mint, authority, metadataAddress, multiSigners = [], programId = TOKEN_2022_PROGRAM_ID) {
if (!programSupportsExtensions(programId)) {
throw new TokenUnsupportedInstructionError();
}
const keys = addSigners([{ pubkey: mint, isSigner: false, isWritable: true }], authority, multiSigners);
const data = Buffer.alloc(updateMetadataPointerData.span);
updateMetadataPointerData.encode({
instruction: TokenInstruction.MetadataPointerExtension,
metadataPointerInstruction: MetadataPointerInstruction.Update,
metadataAddress: metadataAddress ?? PublicKey.default,
}, data);
return new TransactionInstruction({ keys, programId, data: data });
}
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