@solana/spl-token
Version:
SPL Token Program JS API
95 lines • 3.83 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.mintToCheckedInstructionData = void 0;
exports.createMintToCheckedInstruction = createMintToCheckedInstruction;
exports.decodeMintToCheckedInstruction = decodeMintToCheckedInstruction;
exports.decodeMintToCheckedInstructionUnchecked = decodeMintToCheckedInstructionUnchecked;
const buffer_layout_1 = require("@solana/buffer-layout");
const buffer_layout_utils_1 = require("@solana/buffer-layout-utils");
const web3_js_1 = require("@solana/web3.js");
const constants_js_1 = require("../constants.js");
const errors_js_1 = require("../errors.js");
const internal_js_1 = require("./internal.js");
const types_js_1 = require("./types.js");
/** TODO: docs */
exports.mintToCheckedInstructionData = (0, buffer_layout_1.struct)([
(0, buffer_layout_1.u8)('instruction'),
(0, buffer_layout_utils_1.u64)('amount'),
(0, buffer_layout_1.u8)('decimals'),
]);
/**
* Construct a MintToChecked instruction
*
* @param mint Public key of the mint
* @param destination Address of the token account to mint to
* @param authority The mint authority
* @param amount Amount to mint
* @param decimals Number of decimals in amount to mint
* @param multiSigners Signing accounts if `authority` is a multisig
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
function createMintToCheckedInstruction(mint, destination, authority, amount, decimals, multiSigners = [], programId = constants_js_1.TOKEN_PROGRAM_ID) {
const keys = (0, internal_js_1.addSigners)([
{ pubkey: mint, isSigner: false, isWritable: true },
{ pubkey: destination, isSigner: false, isWritable: true },
], authority, multiSigners);
const data = Buffer.alloc(exports.mintToCheckedInstructionData.span);
exports.mintToCheckedInstructionData.encode({
instruction: types_js_1.TokenInstruction.MintToChecked,
amount: BigInt(amount),
decimals,
}, data);
return new web3_js_1.TransactionInstruction({ keys, programId, data });
}
/**
* Decode a MintToChecked instruction and validate it
*
* @param instruction Transaction instruction to decode
* @param programId SPL Token program account
*
* @return Decoded, valid instruction
*/
function decodeMintToCheckedInstruction(instruction, programId = constants_js_1.TOKEN_PROGRAM_ID) {
if (!instruction.programId.equals(programId))
throw new errors_js_1.TokenInvalidInstructionProgramError();
if (instruction.data.length !== exports.mintToCheckedInstructionData.span)
throw new errors_js_1.TokenInvalidInstructionDataError();
const { keys: { mint, destination, authority, multiSigners }, data, } = decodeMintToCheckedInstructionUnchecked(instruction);
if (data.instruction !== types_js_1.TokenInstruction.MintToChecked)
throw new errors_js_1.TokenInvalidInstructionTypeError();
if (!mint || !destination || !authority)
throw new errors_js_1.TokenInvalidInstructionKeysError();
// TODO: key checks?
return {
programId,
keys: {
mint,
destination,
authority,
multiSigners,
},
data,
};
}
/**
* Decode a MintToChecked instruction without validating it
*
* @param instruction Transaction instruction to decode
*
* @return Decoded, non-validated instruction
*/
function decodeMintToCheckedInstructionUnchecked({ programId, keys: [mint, destination, authority, ...multiSigners], data, }) {
return {
programId,
keys: {
mint,
destination,
authority,
multiSigners,
},
data: exports.mintToCheckedInstructionData.decode(data),
};
}
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