erc20_rs/
lib.rs

1use alloy_network::Ethereum;
2use alloy_primitives::Address;
3use alloy_primitives::U256;
4use alloy_provider::PendingTransactionBuilder;
5use alloy_provider::Provider;
6use alloy_sol_types::sol;
7
8use crate::ERC20::ERC20Instance;
9
10/// The ERC20 contract.
11#[derive(Clone, Debug)]
12pub struct Erc20<P: Provider<Ethereum>> {
13    instance: ERC20Instance<P>,
14}
15
16impl<P: Provider<Ethereum>> Erc20<P> {
17    pub fn new(address: Address, provider: P) -> Self {
18        Self {
19            instance: ERC20Instance::new(address, provider),
20        }
21    }
22
23    pub async fn balance_of(&self, address: Address) -> Result<U256, alloy_contract::Error> {
24        self.instance.balanceOf(address).call().await
25    }
26
27    pub async fn allowance(
28        &self,
29        owner: Address,
30        spender: Address,
31    ) -> Result<U256, alloy_contract::Error> {
32        self.instance.allowance(owner, spender).call().await
33    }
34
35    pub async fn decimals(&self) -> Result<u8, alloy_contract::Error> {
36        self.instance.decimals().call().await
37    }
38
39    pub async fn approve(
40        &self,
41        owner: Address,
42        spender: Address,
43        amount: U256,
44    ) -> Result<PendingTransactionBuilder<Ethereum>, alloy_contract::Error> {
45        self.instance
46            .approve(spender, amount)
47            .from(owner)
48            .send()
49            .await
50    }
51
52    pub async fn transfer(
53        &self,
54        from: Address,
55        to: Address,
56        amount: U256,
57    ) -> Result<PendingTransactionBuilder<Ethereum>, alloy_contract::Error> {
58        self.instance.transfer(to, amount).from(from).send().await
59    }
60}
61
62sol!(
63    #[allow(clippy::too_many_arguments)]
64    #[allow(missing_docs)]
65    #[sol(rpc)]
66    ERC20,
67    "abi/erc20.json"
68);
erc20_rs/lib.rs

erc20_rs/
lib.rs
