Dart code generated from Cairo 1 contract

erc.sierra.dart

import 'package:starknet/starknet.dart';
import 'erc.sierra.g.dart';

void main() async {
  Felt contractAddress = Felt.fromHexString(
      "0x53813135446812b36f67e5b363813df086d88544ce17c742376082b8e997e29");

  final account = account0;

  final erc20 = Erc(account: account, address: contractAddress);

  final name = await erc20.get_name();
  print('Name: ${name.toSymbol()}');

  final symbol = await erc20.get_symbol();
  print('Symbol: ${symbol.toSymbol()}');

  final supply = await erc20.get_total_supply();
  print('Supply: $supply');

  final decimals = await erc20.get_decimals();
  print('Decimals: $decimals');

  final balance = await erc20.balance_of(account.accountAddress);
  print('Balance: $balance');

  await erc20.transfer(
    account1.accountAddress,
    Uint256(
      low: Felt.fromInt(10),
      high: Felt.fromInt(0),
    ),
  );

  print(
    'Balance account 0: ${(await erc20.balance_of(account.accountAddress))}',
  );
  print(
    'Balance account 1: ${(await erc20.balance_of(account1.accountAddress))}',
  );
}

erc.sierra.g.dart

// Generated code, do not modify. Run `build_runner build` to re-generate!

import 'package:starknet/starknet.dart';

class Erc {
  Erc({
    required account,
    required address,
  }) : _contract = Contract(
          account: account,
          address: address,
        );

  final Contract _contract;

  Future<String> constructor(
    Felt name_,
    Felt symbol_,
    Felt decimals_,
    Uint256 initial_supply,
    Felt recipient,
  ) async {
    final List<Felt> params = [
      ...name_.toCallData(),
      ...symbol_.toCallData(),
      ...decimals_.toCallData(),
      ...initial_supply.toCallData(),
      ...recipient.toCallData(),
    ];
    final trx = await _contract.execute(
      'constructor',
      params,
    );
    final trxHash = trx.when(
      result: (result) => result.transaction_hash,
      error: (error) => throw Exception,
    );
    return trxHash;
  }

  Future<Felt> get_name() async {
    final List<Felt> params = [];
    final res = await _contract.call(
      'get_name',
      params,
    );
    return Felt.fromCallData(res);
  }

  Future<Felt> get_symbol() async {
    final List<Felt> params = [];
    final res = await _contract.call(
      'get_symbol',
      params,
    );
    return Felt.fromCallData(res);
  }

  Future<Felt> get_decimals() async {
    final List<Felt> params = [];
    final res = await _contract.call(
      'get_decimals',
      params,
    );
    return Felt.fromCallData(res);
  }

  Future<Uint256> get_total_supply() async {
    final List<Felt> params = [];
    final res = await _contract.call(
      'get_total_supply',
      params,
    );
    return Uint256.fromCallData(res);
  }

  Future<Uint256> balance_of(Felt account) async {
    final List<Felt> params = [...account.toCallData()];
    final res = await _contract.call(
      'balance_of',
      params,
    );
    return Uint256.fromCallData(res);
  }

  Future<Uint256> allowance(
    Felt owner,
    Felt spender,
  ) async {
    final List<Felt> params = [
      ...owner.toCallData(),
      ...spender.toCallData(),
    ];
    final res = await _contract.call(
      'allowance',
      params,
    );
    return Uint256.fromCallData(res);
  }

  Future<String> transfer(
    Felt recipient,
    Uint256 amount,
  ) async {
    final List<Felt> params = [
      ...recipient.toCallData(),
      ...amount.toCallData(),
    ];
    final trx = await _contract.execute(
      'transfer',
      params,
    );
    final trxHash = trx.when(
      result: (result) => result.transaction_hash,
      error: (error) => throw Exception,
    );
    return trxHash;
  }

  Future<String> transfer_from(
    Felt sender,
    Felt recipient,
    Uint256 amount,
  ) async {
    final List<Felt> params = [
      ...sender.toCallData(),
      ...recipient.toCallData(),
      ...amount.toCallData(),
    ];
    final trx = await _contract.execute(
      'transfer_from',
      params,
    );
    final trxHash = trx.when(
      result: (result) => result.transaction_hash,
      error: (error) => throw Exception,
    );
    return trxHash;
  }

  Future<String> approve(
    Felt spender,
    Uint256 amount,
  ) async {
    final List<Felt> params = [
      ...spender.toCallData(),
      ...amount.toCallData(),
    ];
    final trx = await _contract.execute(
      'approve',
      params,
    );
    final trxHash = trx.when(
      result: (result) => result.transaction_hash,
      error: (error) => throw Exception,
    );
    return trxHash;
  }

  Future<String> increase_allowance(
    Felt spender,
    Uint256 added_value,
  ) async {
    final List<Felt> params = [
      ...spender.toCallData(),
      ...added_value.toCallData(),
    ];
    final trx = await _contract.execute(
      'increase_allowance',
      params,
    );
    final trxHash = trx.when(
      result: (result) => result.transaction_hash,
      error: (error) => throw Exception,
    );
    return trxHash;
  }

  Future<String> decrease_allowance(
    Felt spender,
    Uint256 subtracted_value,
  ) async {
    final List<Felt> params = [
      ...spender.toCallData(),
      ...subtracted_value.toCallData(),
    ];
    final trx = await _contract.execute(
      'decrease_allowance',
      params,
    );
    final trxHash = trx.when(
      result: (result) => result.transaction_hash,
      error: (error) => throw Exception,
    );
    return trxHash;
  }
}

erc.sierra.json

[{"type":"function","name":"constructor","inputs":[{"name":"name_","type":"core::felt252"},{"name":"symbol_","type":"core::felt252"},{"name":"decimals_","type":"core::integer::u8"},{"name":"initial_supply","type":"core::integer::u256"},{"name":"recipient","type":"core::starknet::contract_address::ContractAddress"}],"outputs":[],"state_mutability":"external"},{"type":"function","name":"get_name","inputs":[],"outputs":[{"type":"core::felt252"}],"state_mutability":"view"},{"type":"function","name":"get_symbol","inputs":[],"outputs":[{"type":"core::felt252"}],"state_mutability":"view"},{"type":"function","name":"get_decimals","inputs":[],"outputs":[{"type":"core::integer::u8"}],"state_mutability":"view"},{"type":"function","name":"get_total_supply","inputs":[],"outputs":[{"type":"core::integer::u256"}],"state_mutability":"view"},{"type":"function","name":"balance_of","inputs":[{"name":"account","type":"core::starknet::contract_address::ContractAddress"}],"outputs":[{"type":"core::integer::u256"}],"state_mutability":"view"},{"type":"function","name":"allowance","inputs":[{"name":"owner","type":"core::starknet::contract_address::ContractAddress"},{"name":"spender","type":"core::starknet::contract_address::ContractAddress"}],"outputs":[{"type":"core::integer::u256"}],"state_mutability":"view"},{"type":"function","name":"transfer","inputs":[{"name":"recipient","type":"core::starknet::contract_address::ContractAddress"},{"name":"amount","type":"core::integer::u256"}],"outputs":[],"state_mutability":"external"},{"type":"function","name":"transfer_from","inputs":[{"name":"sender","type":"core::starknet::contract_address::ContractAddress"},{"name":"recipient","type":"core::starknet::contract_address::ContractAddress"},{"name":"amount","type":"core::integer::u256"}],"outputs":[],"state_mutability":"external"},{"type":"function","name":"approve","inputs":[{"name":"spender","type":"core::starknet::contract_address::ContractAddress"},{"name":"amount","type":"core::integer::u256"}],"outputs":[],"state_mutability":"external"},{"type":"function","name":"increase_allowance","inputs":[{"name":"spender","type":"core::starknet::contract_address::ContractAddress"},{"name":"added_value","type":"core::integer::u256"}],"outputs":[],"state_mutability":"external"},{"type":"function","name":"decrease_allowance","inputs":[{"name":"spender","type":"core::starknet::contract_address::ContractAddress"},{"name":"subtracted_value","type":"core::integer::u256"}],"outputs":[],"state_mutability":"external"},{"type":"event","name":"Transfer","inputs":[{"name":"from","type":"core::starknet::contract_address::ContractAddress"},{"name":"to","type":"core::starknet::contract_address::ContractAddress"},{"name":"value","type":"core::integer::u256"}]},{"type":"event","name":"Approval","inputs":[{"name":"owner","type":"core::starknet::contract_address::ContractAddress"},{"name":"spender","type":"core::starknet::contract_address::ContractAddress"},{"name":"value","type":"core::integer::u256"}]}]