@solana/spl-token
Version:
SPL Token Program JS API
71 lines • 2.79 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.syncNativeInstructionData = void 0;
exports.createSyncNativeInstruction = createSyncNativeInstruction;
exports.decodeSyncNativeInstruction = decodeSyncNativeInstruction;
exports.decodeSyncNativeInstructionUnchecked = decodeSyncNativeInstructionUnchecked;
const buffer_layout_1 = require("@solana/buffer-layout");
const web3_js_1 = require("@solana/web3.js");
const constants_js_1 = require("../constants.js");
const errors_js_1 = require("../errors.js");
const types_js_1 = require("./types.js");
/** TODO: docs */
exports.syncNativeInstructionData = (0, buffer_layout_1.struct)([(0, buffer_layout_1.u8)('instruction')]);
/**
* Construct a SyncNative instruction
*
* @param account Native account to sync lamports from
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
function createSyncNativeInstruction(account, programId = constants_js_1.TOKEN_PROGRAM_ID) {
const keys = [{ pubkey: account, isSigner: false, isWritable: true }];
const data = Buffer.alloc(exports.syncNativeInstructionData.span);
exports.syncNativeInstructionData.encode({ instruction: types_js_1.TokenInstruction.SyncNative }, data);
return new web3_js_1.TransactionInstruction({ keys, programId, data });
}
/**
* Decode a SyncNative instruction and validate it
*
* @param instruction Transaction instruction to decode
* @param programId SPL Token program account
*
* @return Decoded, valid instruction
*/
function decodeSyncNativeInstruction(instruction, programId = constants_js_1.TOKEN_PROGRAM_ID) {
if (!instruction.programId.equals(programId))
throw new errors_js_1.TokenInvalidInstructionProgramError();
if (instruction.data.length !== exports.syncNativeInstructionData.span)
throw new errors_js_1.TokenInvalidInstructionDataError();
const { keys: { account }, data, } = decodeSyncNativeInstructionUnchecked(instruction);
if (data.instruction !== types_js_1.TokenInstruction.SyncNative)
throw new errors_js_1.TokenInvalidInstructionTypeError();
if (!account)
throw new errors_js_1.TokenInvalidInstructionKeysError();
// TODO: key checks?
return {
programId,
keys: {
account,
},
data,
};
}
/**
* Decode a SyncNative instruction without validating it
*
* @param instruction Transaction instruction to decode
*
* @return Decoded, non-validated instruction
*/
function decodeSyncNativeInstructionUnchecked({ programId, keys: [account], data, }) {
return {
programId,
keys: {
account,
},
data: exports.syncNativeInstructionData.decode(data),
};
}
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