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solang tokens examples
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‎tokens/create-token/solang/.gitignore

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.anchor
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.DS_Store
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target
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**/*.rs.bk
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node_modules
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test-ledger
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.yarn

‎tokens/create-token/solang/Anchor.toml

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[features]
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seeds = false
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skip-lint = false
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[programs.localnet]
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create_token = "8eZPhSaXfHqbcrfskVThtCG68kq8MfVHqmtm6wYf4TLb"
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[registry]
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url = "https://api.apr.dev"
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[provider]
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cluster = "Localnet"
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wallet = "~/.config/solana/id.json"
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[scripts]
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test = "yarn run ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"
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[test.validator]
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url = "https://api.mainnet-beta.solana.com"
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[[test.validator.clone]]
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address = "metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s"

‎tokens/create-token/solang/package.json

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{
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"scripts": {
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"lint:fix": "prettier */*.js \"*/**/*{.js,.ts}\" -w",
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"lint": "prettier */*.js \"*/**/*{.js,.ts}\" --check"
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},
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"dependencies": {
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"@coral-xyz/anchor": "^0.28.0",
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"@metaplex-foundation/js": "^0.19.4"
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},
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"devDependencies": {
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"@types/bn.js": "^5.1.0",
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"@types/chai": "^4.3.0",
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"@types/mocha": "^9.0.0",
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"chai": "^4.3.4",
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"mocha": "^9.0.3",
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"prettier": "^2.6.2",
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"ts-mocha": "^10.0.0",
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"typescript": "^4.3.5"
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}
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}

‎tokens/create-token/solang/solidity/create-token.sol

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import "./spl_token.sol";
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import "./mpl_metadata.sol";
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@program_id("8eZPhSaXfHqbcrfskVThtCG68kq8MfVHqmtm6wYf4TLb")
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contract create_token {
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// Creating a dataAccount is required by Solang
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// The account is unused in this example
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@payer(payer) // payer account
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constructor(address payer) {}
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function createTokenMint(
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address payer, // payer account
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address mint, // mint account to be created
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address mintAuthority, // mint authority for the mint account
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address freezeAuthority, // freeze authority for the mint account
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address metadata, // metadata account to be created
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uint8 decimals, // decimals for the mint account
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string name, // name for the metadata account
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string symbol, // symbol for the metadata account
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string uri // uri for the metadata account
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) public view {
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// Invoke System Program to create a new account for the mint account and,
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// Invoke Token Program to initialize the mint account
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// Set mint authority, freeze authority, and decimals for the mint account
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SplToken.create_mint(
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payer, // payer account
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mint, // mint account
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mintAuthority, // mint authority
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freezeAuthority, // freeze authority
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decimals // decimals
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);
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// Invoke Metadata Program to create a new account for the metadata account
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MplMetadata.create_metadata_account(
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metadata, // metadata account
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mint, // mint account
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mintAuthority, // mint authority
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payer, // payer
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payer, // update authority (of the metadata account)
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name, // name
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symbol, // symbol
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uri // uri (off-chain metadata json)
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);
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}
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}

‎tokens/create-token/solang/solidity/mpl_metadata.sol

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import 'solana';
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/token-metadata/program/src/instruction/metadata.rs#L449
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// Solidity does not support Rust Option<> type, so we need to handle it manually
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// Requires creating a struct for each combination of Option<> types
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// If bool for Option<> type is false, comment out the corresponding struct field otherwise instruction fails with "invalid account data"
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// TODO: figure out better way to handle Option<> types
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library MplMetadata {
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address constant metadataProgramId = address"metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s";
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address constant systemAddress = address"11111111111111111111111111111111";
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address constant rentAddress = address"SysvarRent111111111111111111111111111111111";
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/token-metadata/program/src/instruction/metadata.rs#L31
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struct CreateMetadataAccountArgsV3 {
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DataV2 data;
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bool isMutable;
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bool collectionDetailsPresent; // To handle Rust Option<> in Solidity
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// CollectionDetails collectionDetails;
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}
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/token-metadata/program/src/state/data.rs#L22
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struct DataV2 {
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string name;
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string symbol;
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string uri;
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uint16 sellerFeeBasisPoints;
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bool creatorsPresent; // To handle Rust Option<> in Solidity
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// Creator[] creators;
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bool collectionPresent; // To handle Rust Option<> in Solidity
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// Collection collection;
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bool usesPresent; // To handle Rust Option<> in Solidity
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// Uses uses;
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}
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/bubblegum/program/src/state/metaplex_adapter.rs#L10
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struct Creator {
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address creatorAddress;
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bool verified;
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uint8 share;
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}
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/bubblegum/program/src/state/metaplex_adapter.rs#L66
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struct Collection {
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bool verified;
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address key;
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}
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/token-metadata/program/src/state/collection.rs#L57
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struct CollectionDetails {
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CollectionDetailsType detailType;
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uint64 size;
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}
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enum CollectionDetailsType {
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V1
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}
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/bubblegum/program/src/state/metaplex_adapter.rs#L43
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struct Uses {
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UseMethod useMethod;
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uint64 remaining;
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uint64 total;
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}
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// Reference: https://github.com/metaplex-foundation/metaplex-program-library/blob/master/bubblegum/program/src/state/metaplex_adapter.rs#L35
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enum UseMethod {
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Burn,
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Multiple,
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Single
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}
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function create_metadata_account(
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address metadata,
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address mint,
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address mintAuthority,
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address payer,
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address updateAuthority,
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string name,
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string symbol,
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string uri
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) public view {
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// // Example of how to add a Creator[] array to the DataV2 struct
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// Creator[] memory creators = new Creator[](1);
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// creators[0] = Creator({
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// creatorAddress: payer,
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// verified: false,
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// share: 100
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// });
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DataV2 data = DataV2({
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name: name,
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symbol: symbol,
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uri: uri,
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sellerFeeBasisPoints: 0,
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creatorsPresent: false,
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// creators: creators,
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collectionPresent: false,
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// collection: Collection({
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// verified: false,
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// key: address(0)
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// }),
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usesPresent: false
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// uses: Uses({
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// useMethod: UseMethod.Burn,
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// remaining: 0,
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// total: 0
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// })
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});
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CreateMetadataAccountArgsV3 args = CreateMetadataAccountArgsV3({
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data: data,
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isMutable: true,
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collectionDetailsPresent: false
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// collectionDetails: CollectionDetails({
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// detailType: CollectionDetailsType.V1,
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// size: 0
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// })
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});
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AccountMeta[7] metas = [
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AccountMeta({pubkey: metadata, is_writable: true, is_signer: false}),
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AccountMeta({pubkey: mint, is_writable: false, is_signer: false}),
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AccountMeta({pubkey: mintAuthority, is_writable: false, is_signer: true}),
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AccountMeta({pubkey: payer, is_writable: true, is_signer: true}),
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AccountMeta({pubkey: updateAuthority, is_writable: false, is_signer: false}),
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AccountMeta({pubkey: systemAddress, is_writable: false, is_signer: false}),
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AccountMeta({pubkey: rentAddress, is_writable: false, is_signer: false})
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];
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bytes1 discriminator = 33;
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bytes instructionData = abi.encode(discriminator, args);
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metadataProgramId.call{accounts: metas}(instructionData);
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}
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}

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