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Текущая директория: /opt/BitGoJS/node_modules/@solana/spl-token/lib/cjs/instructions
Просмотр файла: burnChecked.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.decodeBurnCheckedInstructionUnchecked = exports.decodeBurnCheckedInstruction = exports.createBurnCheckedInstruction = exports.burnCheckedInstructionData = void 0;
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_1 = require("../constants");
const errors_1 = require("../errors");
const internal_1 = require("./internal");
const types_1 = require("./types");
/** TODO: docs */
exports.burnCheckedInstructionData = (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 BurnChecked instruction
*
* @param mint Mint for the account
* @param account Account to burn tokens from
* @param owner Owner of the account
* @param amount Number of tokens to burn
* @param decimals Number of decimals in burn amount
* @param multiSigners Signing accounts if `owner` is a multisig
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
function createBurnCheckedInstruction(account, mint, owner, amount, decimals, multiSigners = [], programId = constants_1.TOKEN_PROGRAM_ID) {
const keys = (0, internal_1.addSigners)([
{ pubkey: account, isSigner: false, isWritable: true },
{ pubkey: mint, isSigner: false, isWritable: true },
], owner, multiSigners);
const data = Buffer.alloc(exports.burnCheckedInstructionData.span);
exports.burnCheckedInstructionData.encode({
instruction: types_1.TokenInstruction.BurnChecked,
amount: BigInt(amount),
decimals,
}, data);
return new web3_js_1.TransactionInstruction({ keys, programId, data });
}
exports.createBurnCheckedInstruction = createBurnCheckedInstruction;
/**
* Decode a BurnChecked instruction and validate it
*
* @param instruction Transaction instruction to decode
* @param programId SPL Token program account
*
* @return Decoded, valid instruction
*/
function decodeBurnCheckedInstruction(instruction, programId = constants_1.TOKEN_PROGRAM_ID) {
if (!instruction.programId.equals(programId))
throw new errors_1.TokenInvalidInstructionProgramError();
if (instruction.data.length !== exports.burnCheckedInstructionData.span)
throw new errors_1.TokenInvalidInstructionDataError();
const { keys: { account, mint, owner, multiSigners }, data, } = decodeBurnCheckedInstructionUnchecked(instruction);
if (data.instruction !== types_1.TokenInstruction.BurnChecked)
throw new errors_1.TokenInvalidInstructionTypeError();
if (!account || !mint || !owner)
throw new errors_1.TokenInvalidInstructionKeysError();
// TODO: key checks?
return {
programId,
keys: {
account,
mint,
owner,
multiSigners,
},
data,
};
}
exports.decodeBurnCheckedInstruction = decodeBurnCheckedInstruction;
/**
* Decode a BurnChecked instruction without validating it
*
* @param instruction Transaction instruction to decode
*
* @return Decoded, non-validated instruction
*/
function decodeBurnCheckedInstructionUnchecked({ programId, keys: [account, mint, owner, ...multiSigners], data, }) {
return {
programId,
keys: {
account,
mint,
owner,
multiSigners,
},
data: exports.burnCheckedInstructionData.decode(data),
};
}
exports.decodeBurnCheckedInstructionUnchecked = decodeBurnCheckedInstructionUnchecked;
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