tycho-execution 0.312.1

Provides tools for encoding and executing swaps against Tycho router and protocol executors.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

use std::collections::HashMap;

use alloy::sol_types::SolValue;
use tycho_common::{models::Chain, Bytes};

use crate::encoding::{
    errors::EncodingError,
    evm::utils::bytes_to_address,
    models::{EncodingContext, Swap},
    swap_encoder::SwapEncoder,
};

#[derive(Clone)]
pub struct FermiSwapEncoder {
    executor_address: Bytes,
}

impl SwapEncoder for FermiSwapEncoder {
    fn new(
        executor_address: Bytes,
        chain: Chain,
        _config: Option<HashMap<String, String>>,
    ) -> Result<Self, EncodingError> {
        if chain != Chain::Ethereum {
            return Err(EncodingError::FatalError(
                "FermiSwap swaps are only supported on Ethereum".to_string(),
            ));
        }

        Ok(Self { executor_address })
    }

    fn encode_swap(
        &self,
        swap: &Swap,
        _encoding_context: &EncodingContext,
    ) -> Result<Vec<u8>, EncodingError> {
        let token_in = bytes_to_address(&swap.token_in().address)?;
        let token_out = bytes_to_address(&swap.token_out().address)?;

        let args = (token_in, token_out);
        Ok(args.abi_encode_packed())
    }

    fn executor_address(&self) -> &Bytes {
        &self.executor_address
    }

    fn clone_box(&self) -> Box<dyn SwapEncoder> {
        Box::new(self.clone())
    }
}

#[cfg(test)]
mod tests {
    use alloy::hex::encode;
    use num_bigint::BigUint;
    use tycho_common::models::protocol::ProtocolComponent;

    use super::*;
    use crate::encoding::{evm::utils::write_calldata_to_file, models::default_token};

    fn weth_usdc_component() -> ProtocolComponent {
        ProtocolComponent {
            id: String::from("0x7c85004568584fbf3665f41ebe85146ee0483587d65d9ea5a56c79816bb720d0"),
            protocol_system: String::from("vm:fermiswap"),
            ..Default::default()
        }
    }

    fn encoder() -> FermiSwapEncoder {
        FermiSwapEncoder::new(
            Bytes::from("0xe8dc788818033232EF9772CB2e6622F1Ec8bc840"),
            Chain::Ethereum,
            None,
        )
        .unwrap()
    }

    #[test]
    fn test_encode_fermiswap_weth_usdc() {
        let token_in = Bytes::from("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2");
        let token_out = Bytes::from("0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48");
        let swap = Swap::new(
            weth_usdc_component(),
            default_token(token_in.clone()),
            default_token(token_out.clone()),
            BigUint::ZERO,
        );
        let encoding_context = EncodingContext {
            router_address: Some(Bytes::zero(20)),
            group_token_in: token_in,
            group_token_out: token_out,
        };

        let encoded_swap = encoder()
            .encode_swap(&swap, &encoding_context)
            .unwrap();
        let hex_swap = encode(&encoded_swap);

        assert_eq!(
            hex_swap,
            String::from(concat!(
                "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
                "a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
            ))
        );
        write_calldata_to_file("test_encode_fermiswap_weth_usdc", hex_swap.as_str());
    }

    #[test]
    fn test_encode_fermiswap_usdc_weth() {
        let token_in = Bytes::from("0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48");
        let token_out = Bytes::from("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2");
        let swap = Swap::new(
            weth_usdc_component(),
            default_token(token_in.clone()),
            default_token(token_out.clone()),
            BigUint::ZERO,
        );
        let encoding_context = EncodingContext {
            router_address: Some(Bytes::zero(20)),
            group_token_in: token_in,
            group_token_out: token_out,
        };

        let encoded_swap = encoder()
            .encode_swap(&swap, &encoding_context)
            .unwrap();
        let hex_swap = encode(&encoded_swap);

        assert_eq!(
            hex_swap,
            String::from(concat!(
                "a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
                "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
            ))
        );
        write_calldata_to_file("test_encode_fermiswap_usdc_weth", hex_swap.as_str());
    }
}