@solana/spl-token-group
Version:
SPL Token Group Interface JS API
52 lines • 1.91 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.TOKEN_GROUP_SIZE = void 0;
exports.packTokenGroup = packTokenGroup;
exports.unpackTokenGroup = unpackTokenGroup;
const web3_js_1 = require("@solana/web3.js");
const codecs_1 = require("@solana/codecs");
const tokenGroupCodec = (0, codecs_1.getStructCodec)([
['updateAuthority', (0, codecs_1.fixCodecSize)((0, codecs_1.getBytesCodec)(), 32)],
['mint', (0, codecs_1.fixCodecSize)((0, codecs_1.getBytesCodec)(), 32)],
['size', (0, codecs_1.getU64Codec)()],
['maxSize', (0, codecs_1.getU64Codec)()],
]);
exports.TOKEN_GROUP_SIZE = tokenGroupCodec.fixedSize;
// Checks if all elements in the array are 0
function isNonePubkey(buffer) {
for (let i = 0; i < buffer.length; i++) {
if (buffer[i] !== 0) {
return false;
}
}
return true;
}
// Pack TokenGroup into byte slab
function packTokenGroup(group) {
var _a;
// If no updateAuthority given, set it to the None/Zero PublicKey for encoding
const updateAuthority = (_a = group.updateAuthority) !== null && _a !== void 0 ? _a : web3_js_1.PublicKey.default;
return tokenGroupCodec.encode({
updateAuthority: updateAuthority.toBuffer(),
mint: group.mint.toBuffer(),
size: group.size,
maxSize: group.maxSize,
});
}
// unpack byte slab into TokenGroup
function unpackTokenGroup(buffer) {
const data = tokenGroupCodec.decode(buffer);
return isNonePubkey(data.updateAuthority)
? {
mint: new web3_js_1.PublicKey(data.mint),
size: data.size,
maxSize: data.maxSize,
}
: {
updateAuthority: new web3_js_1.PublicKey(data.updateAuthority),
mint: new web3_js_1.PublicKey(data.mint),
size: data.size,
maxSize: data.maxSize,
};
}
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