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Merge branch 'refs/heads/main' into router/tnl/fix-deployment

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Diana Carvalho
2025-05-27 15:33:20 +01:00
parent 88ad67e5ff d6ee85e8da
commit c0805b107f
16 changed files with 2902 additions and 2191 deletions
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27
CHANGELOG.md
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@@ -1,3 +1,30 @@
## [0.95.1](https://github.com/propeller-heads/tycho-execution/compare/0.95.0...0.95.1) (2025-05-27)
### Bug Fixes
* Move encode_input back into encoding_utils.rs ([92d36b9](https://github.com/propeller-heads/tycho-execution/commit/92d36b9f48d30aad2d1227c21f490ac9f47daa7b))
## [0.95.0](https://github.com/propeller-heads/tycho-execution/compare/0.94.0...0.95.0) (2025-05-26)
### Features
* Don't sign permit2 objects ([c62af2f](https://github.com/propeller-heads/tycho-execution/commit/c62af2f232063d3a3c5baa759d484b0d2cc2c185))
### Bug Fixes
* Bring back swapper_pk for backwards compatibility ([d12e3d3](https://github.com/propeller-heads/tycho-execution/commit/d12e3d3b5fc302b1c266424189f984884b2d9ed7))
* Make functions in encoding_utils.rs private ([5ddd2a9](https://github.com/propeller-heads/tycho-execution/commit/5ddd2a9cd7d41d8899ff3667ca2587dc89fdce6a))
## [0.94.0](https://github.com/propeller-heads/tycho-execution/compare/0.93.0...0.94.0) (2025-05-23)
### Features
* Create non alloy specific Permit and PermitDetails structs ([75f2c3a](https://github.com/propeller-heads/tycho-execution/commit/75f2c3a1c52b6ee8823d449b70147cb023202e93))
## [0.93.0](https://github.com/propeller-heads/tycho-execution/compare/0.92.1...0.93.0) (2025-05-22)

2
Cargo.lock generated
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@@ -4469,7 +4469,7 @@ dependencies = [
[[package]]
name = "tycho-execution"
version = "0.93.0"
version = "0.95.1"
dependencies = [
"alloy",
"alloy-primitives",

2
Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "tycho-execution"
version = "0.93.0"
version = "0.95.1"
edition = "2021"
description = "Provides tools for encoding and executing swaps against Tycho router and protocol executors."
repository = "https://github.com/propeller-heads/tycho-execution"

23
examples/encoding-example/main.rs
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@@ -7,20 +7,17 @@ use tycho_common::{
};
use tycho_execution::encoding::{
evm::encoder_builders::TychoRouterEncoderBuilder,
models::{Solution, Swap},
models::{Solution, Swap, UserTransferType},
};
fn main() {
// Setup variables
let swapper_pk =
"0x123456789abcdef123456789abcdef123456789abcdef123456789abcdef1234".to_string();
let user_address = Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2")
.expect("Failed to create user address");
// Initialize the encoder
let encoder = TychoRouterEncoderBuilder::new()
.chain(Chain::Ethereum)
.swapper_pk(swapper_pk)
.user_transfer_type(UserTransferType::TransferFrom)
.build()
.expect("Failed to build encoder");
@@ -67,10 +64,10 @@ fn main() {
.clone();
println!(" ====== Simple swap WETH -> USDC ======");
println!(
"The simple swap encoded solution should be sent to address {:?} and selector {:?} and the \
following encoded data: {:?}",
"The simple swap encoded solution should be sent to address {:?} with function signature {:?} and the \
following encoded swaps: {:?}",
encoded_solution.interacting_with,
encoded_solution.selector,
encoded_solution.function_signature,
hex::encode(encoded_solution.swaps)
);
@@ -141,10 +138,10 @@ fn main() {
println!(" ====== Complex split swap WETH -> USDC ======");
println!(
"The complex swaps encoded solution should be sent to address {:?} and selector {:?} and the \
following encoded data: {:?}",
complex_encoded_solution.interacting_with,
complex_encoded_solution.selector,
hex::encode(complex_encoded_solution.swaps)
"The complex swaps encoded solution should be sent to address {:?} with function signature {:?} and the \
following encoded swaps: {:?}",
complex_encoded_solution.interacting_with,
complex_encoded_solution.function_signature,
hex::encode(complex_encoded_solution.swaps)
);
}

24
foundry/test/assets/calldata.txt
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@@ -3,23 +3,23 @@ test_single_encoding_strategy_ekubo:5c4b639c000000000000000000000000000000000000
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test_multi_protocol:51bcc7b600000000000000000000000000000000000000000000005150ae84a8cdf000000000000000000000000000006b175474e89094c44da98b954eedeac495271d0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a2958f36da71a9200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000cd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc20000000000000000000000006b175474e89094c44da98b954eedeac495271d0f00000000000000000000000000000000000000000000005150ae84a8cdf0000000000000000000000000000000000000000000000000000000000000685552e700000000000000000000000000000000000000000000000000000000000000000000000000000000000000003ede3eca2a72b3aecc820e955b36f38437d0139500000000000000000000000000000000000000000000000000000000682dccef00000000000000000000000000000000000000000000000000000000000001e0000000000000000000000000000000000000000000000000000000000000026000000000000000000000000000000000000000000000000000000000000000410488df0c2ac790f75505dbd2754518d70fb02c32fb3bb3e63e299259037765606ca8d38d05c9c6d2d82e3b39203f378ad489f715a2aeb7df674ee4b8e5c8d1151c00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000021400525615deb798bb3e4dfa0139dfa1b3d433cc23b72f6b175474e89094c44da98b954eedeac495271d0fa478c2975ab1ea89e8196811f51a7b7ade33eb113ede3eca2a72b3aecc820e955b36f38437d0139501000072c7183455a4c133ae270771860664b6b7ec320bb1c02aaa39b223fe8d0a0e5c4f27ead9083c756cc22260fac5e5542a773aa44fbcfedf7c193bc2c599a6f548df93de924d73be7d25dc02554c6bd66db500020000000000000000000e3ede3eca2a72b3aecc820e955b36f38437d01395010200691d1499e622d69689cdf9004d05ec547d650ff2112260fac5e5542a773aa44fbcfedf7c193bc2c599dac17f958d2ee523a2206206994597c13d831ec7d51a44d3fae010294c616388b506acda1bfaae4603010001023ede3eca2a72b3aecc820e955b36f38437d013950071a0cb889707d426a7a386870a03bc70d1b0697598013ede3eca2a72b3aecc820e955b36f38437d01395dac17f958d2ee523a2206206994597c13d831ec7a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4800000000000000000000000000000000000000000001a36e2eb1c43200000032006cf62849f9a0b5bf2913b396098f7c7019b51a820aa0b86991c6218b36c1d19d4a2e9eb0ce3606eb4800000000000000000000000000000000000000000001cd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc20000000000000000000000000000000000000000000bb800003c000000000000000000000000
test_multi_protocol: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
test_encode_balancer_v2:c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2ba100000625a3754423978a60c9317c58a424e3d5c6ee304399dbdb9c8ef030ab642b10820db8f560002000000000000000000141d96f2f6bef1202e4ce1ff6dad0c2cb002861d3e0102
test_ekubo_encode_swap_multi:01ca4f73fe97d0b987a0d12b39bbd562c779bab6f60000000000000000000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4851d02a5948496a67827242eabc5725531342527c000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec700000000000000000000000000000000000000000001a36e2eb1c43200000032
test_encode_uniswap_v4_sequential_swap:4c9edd5852cd905f086c759e8383e09bff1e68b32260fac5e5542a773aa44fbcfedf7c193bc2c5990101cd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc2dac17f958d2ee523a2206206994597c13d831ec70000640000012260fac5e5542a773aa44fbcfedf7c193bc2c599000bb800003c

47
src/bin/tycho-encode.rs
View File

@@ -4,8 +4,11 @@ use alloy_sol_types::SolValue;
use clap::{Parser, Subcommand};
use tycho_common::{hex_bytes::Bytes, models::Chain};
use tycho_execution::encoding::{
evm::encoder_builders::{TychoExecutorEncoderBuilder, TychoRouterEncoderBuilder},
models::Solution,
evm::{
approvals::permit2::PermitSingle,
encoder_builders::{TychoExecutorEncoderBuilder, TychoRouterEncoderBuilder},
},
models::{Solution, UserTransferType},
tycho_encoder::TychoEncoder,
};
@@ -21,8 +24,6 @@ use tycho_execution::encoding::{
/// "given_amount": "123...",
/// "checked_token": "0x...",
/// "exact_out": false,
/// "slippage": 0.01,
/// "expected_amount": "123...",
/// "checked_amount": "123...",
/// "swaps": [{
/// "component": {
@@ -51,9 +52,9 @@ pub struct Cli {
#[arg(short, long)]
router_address: Option<Bytes>,
#[arg(short, long)]
swapper_pk: Option<String>,
user_transfer_type: Option<UserTransferType>,
#[arg(short, long)]
token_in_already_in_router: Option<bool>,
swapper_pk: Option<String>,
}
#[derive(Subcommand)]
@@ -87,12 +88,13 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
if let Some(router_address) = cli.router_address {
builder = builder.router_address(router_address);
}
if let Some(user_transfer_type) = cli.user_transfer_type {
builder = builder.user_transfer_type(user_transfer_type);
}
#[allow(deprecated)]
if let Some(swapper_pk) = cli.swapper_pk {
builder = builder.swapper_pk(swapper_pk);
}
if let Some(token_in_already_in_router) = cli.token_in_already_in_router {
builder = builder.token_in_already_in_router(token_in_already_in_router);
}
builder.build()?
}
Commands::TychoExecutor => TychoExecutorEncoderBuilder::new()
@@ -102,19 +104,20 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
let encoded_solutions = encoder.encode_solutions(vec![solution])?;
let encoded = serde_json::json!({
"swaps": format!("0x{}", hex::encode(&encoded_solutions[0].swaps)),
"interacting_with": format!("0x{}", hex::encode(&encoded_solutions[0].interacting_with)),
"selector": format!("{}",&encoded_solutions[0].selector),
"n_tokens": format!("{}", &encoded_solutions[0].n_tokens),
"permit": encoded_solutions[0].permit
.as_ref()
.map(|permit| format!("0x{}", hex::encode(permit.abi_encode())))
.unwrap_or_else(String::new),
"signature": encoded_solutions[0].signature
.as_ref()
.map(|signature| format!("0x{}", hex::encode(signature.as_bytes())))
.unwrap_or_else(String::new),
});
"swaps": format!("0x{}", hex::encode(&encoded_solutions[0].swaps)),
"interacting_with": format!("0x{}", hex::encode(&encoded_solutions[0].interacting_with)),
"function_signature": format!("{}",&encoded_solutions[0].function_signature),
"n_tokens": format!("{}", &encoded_solutions[0].n_tokens),
"permit": match encoded_solutions[0].permit.as_ref() {
Some(permit) => {
match PermitSingle::try_from(permit) {
Ok(sol_permit) => format!("0x{}", hex::encode(sol_permit.abi_encode())),
Err(_) => String::new(),
}
}
None => String::new(),
},
});
// Output the encoded result as JSON to stdout
println!(
"{}",

130
src/encoding/evm/approvals/permit2.rs
View File

@@ -4,11 +4,9 @@ use alloy::{
primitives::{aliases::U48, Address, Bytes as AlloyBytes, TxKind, U160, U256},
providers::{Provider, RootProvider},
rpc::types::{TransactionInput, TransactionRequest},
signers::{local::PrivateKeySigner, SignerSync},
transports::BoxTransport,
};
use alloy_primitives::{PrimitiveSignature as Signature, B256};
use alloy_sol_types::{eip712_domain, sol, SolStruct, SolValue};
use alloy_sol_types::{sol, SolValue};
use chrono::Utc;
use num_bigint::BigUint;
use tokio::{
@@ -23,7 +21,7 @@ use crate::encoding::{
encoding_utils::encode_input,
utils::{biguint_to_u256, bytes_to_address, get_client, get_runtime},
},
models::Chain,
models,
};
/// Struct for managing Permit2 operations, including encoding approvals and fetching allowance
@@ -32,8 +30,6 @@ use crate::encoding::{
pub struct Permit2 {
address: Address,
client: Arc<RootProvider<BoxTransport>>,
signer: PrivateKeySigner,
chain_id: u64,
runtime_handle: Handle,
// Store the runtime to prevent it from being dropped before use.
// This is required since tycho-execution does not have a pre-existing runtime.
@@ -68,23 +64,53 @@ sol! {
}
}
impl TryFrom<&PermitSingle> for models::PermitSingle {
type Error = EncodingError;
fn try_from(sol: &PermitSingle) -> Result<Self, EncodingError> {
Ok(models::PermitSingle {
details: models::PermitDetails {
token: Bytes::from(sol.details.token.to_vec()),
amount: BigUint::from_bytes_be(&sol.details.amount.to_be_bytes::<20>()),
expiration: BigUint::from_bytes_be(
&sol.details
.expiration
.to_be_bytes::<6>(),
),
nonce: BigUint::from_bytes_be(&sol.details.nonce.to_be_bytes::<6>()),
},
spender: Bytes::from(sol.spender.to_vec()),
sig_deadline: BigUint::from_bytes_be(&sol.sigDeadline.to_be_bytes::<32>()),
})
}
}
impl TryFrom<&models::PermitSingle> for PermitSingle {
type Error = EncodingError;
fn try_from(p: &models::PermitSingle) -> Result<Self, EncodingError> {
Ok(PermitSingle {
details: PermitDetails {
token: bytes_to_address(&p.details.token)?,
amount: U160::from(biguint_to_u256(&p.details.amount)),
expiration: U48::from(biguint_to_u256(&p.details.expiration)),
nonce: U48::from(biguint_to_u256(&p.details.nonce)),
},
spender: bytes_to_address(&p.spender)?,
sigDeadline: biguint_to_u256(&p.sig_deadline),
})
}
}
impl Permit2 {
pub fn new(swapper_pk: String, chain: Chain) -> Result<Self, EncodingError> {
pub fn new() -> Result<Self, EncodingError> {
let (handle, runtime) = get_runtime()?;
let client = block_in_place(|| handle.block_on(get_client()))?;
let pk = B256::from_str(&swapper_pk).map_err(|_| {
EncodingError::FatalError("Failed to convert swapper private key to B256".to_string())
})?;
let signer = PrivateKeySigner::from_bytes(&pk).map_err(|_| {
EncodingError::FatalError("Failed to create signer from private key".to_string())
})?;
Ok(Self {
address: Address::from_str("0x000000000022D473030F116dDEE9F6B43aC78BA3")
.map_err(|_| EncodingError::FatalError("Permit2 address not valid".to_string()))?,
client,
runtime_handle: handle,
signer,
chain_id: chain.id,
runtime,
})
}
@@ -123,14 +149,14 @@ impl Permit2 {
))),
}
}
/// Creates permit single and signature
/// Creates permit single
pub fn get_permit(
&self,
spender: &Bytes,
owner: &Bytes,
token: &Bytes,
amount: &BigUint,
) -> Result<(PermitSingle, Signature), EncodingError> {
) -> Result<models::PermitSingle, EncodingError> {
let current_time = Utc::now()
.naive_utc()
.and_utc()
@@ -149,21 +175,7 @@ impl Permit2 {
sigDeadline: sig_deadline,
};
let domain = eip712_domain! {
name: "Permit2",
chain_id: self.chain_id,
verifying_contract: self.address,
};
let hash = permit_single.eip712_signing_hash(&domain);
let signature = self
.signer
.sign_hash_sync(&hash)
.map_err(|e| {
EncodingError::FatalError(format!(
"Failed to sign permit2 approval with error: {e}"
))
})?;
Ok((permit_single, signature))
models::PermitSingle::try_from(&permit_single)
}
}
@@ -171,11 +183,13 @@ impl Permit2 {
mod tests {
use std::str::FromStr;
use alloy_primitives::Uint;
use alloy::signers::local::PrivateKeySigner;
use alloy_primitives::{Uint, B256};
use num_bigint::BigUint;
use tycho_common::models::Chain as TychoCommonChain;
use super::*;
use crate::encoding::{evm::encoding_utils::sign_permit, models::Chain};
// These two implementations are to avoid comparing the expiration and sig_deadline fields
// because they are timestamps
@@ -214,9 +228,7 @@ mod tests {
#[test]
fn test_get_existing_allowance() {
let swapper_pk =
"4c0883a69102937d6231471b5dbb6204fe512961708279feb1be6ae5538da033".to_string();
let manager = Permit2::new(swapper_pk, eth_chain()).unwrap();
let manager = Permit2::new().unwrap();
let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
let owner = Bytes::from_str("0x2c6a3cd97c6283b95ac8c5a4459ebb0d5fd404f4").unwrap();
@@ -233,30 +245,27 @@ mod tests {
#[test]
fn test_get_permit() {
// Set up a mock private key for signing
let private_key =
"4c0883a69102937d6231471b5dbb6204fe512961708279feb1be6ae5538da033".to_string();
let permit2 = Permit2::new(private_key, eth_chain()).expect("Failed to create Permit2");
let permit2 = Permit2::new().expect("Failed to create Permit2");
let owner = Bytes::from_str("0x2c6a3cd97c6283b95ac8c5a4459ebb0d5fd404f4").unwrap();
let spender = Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap();
let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
let amount = BigUint::from(1000u64);
let (permit, _) = permit2
let permit = permit2
.get_permit(&spender, &owner, &token, &amount)
.unwrap();
let expected_details = PermitDetails {
token: bytes_to_address(&token).unwrap(),
amount: U160::from(biguint_to_u256(&amount)),
expiration: U48::from(Utc::now().timestamp() as u64 + PERMIT_EXPIRATION),
nonce: U48::from(0),
let expected_details = models::PermitDetails {
token,
amount,
expiration: BigUint::from(Utc::now().timestamp() as u64 + PERMIT_EXPIRATION),
nonce: BigUint::from(0u64),
};
let expected_permit_single = PermitSingle {
let expected_permit_single = models::PermitSingle {
details: expected_details,
spender: Address::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap(),
sigDeadline: U256::from(Utc::now().timestamp() as u64 + PERMIT_SIG_EXPIRATION),
spender: Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap(),
sig_deadline: BigUint::from(Utc::now().timestamp() as u64 + PERMIT_SIG_EXPIRATION),
};
assert_eq!(
@@ -276,8 +285,19 @@ mod tests {
let anvil_private_key =
"0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80".to_string();
let permit2 =
Permit2::new(anvil_private_key, eth_chain()).expect("Failed to create Permit2");
let pk = B256::from_str(&anvil_private_key)
.map_err(|_| {
EncodingError::FatalError(
"Failed to convert swapper private key to B256".to_string(),
)
})
.unwrap();
let signer = PrivateKeySigner::from_bytes(&pk)
.map_err(|_| {
EncodingError::FatalError("Failed to create signer from private key".to_string())
})
.unwrap();
let permit2 = Permit2::new().expect("Failed to create Permit2");
let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
let amount = BigUint::from(1000u64);
@@ -307,11 +327,15 @@ mod tests {
let spender = Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap();
let (permit, signature) = permit2
let permit = permit2
.get_permit(&spender, &anvil_account, &token, &amount)
.unwrap();
let sol_permit: PermitSingle =
PermitSingle::try_from(&permit).expect("Failed to convert to PermitSingle");
let signature = sign_permit(eth_chain().id, &permit, signer).unwrap();
let encoded =
(bytes_to_address(&anvil_account).unwrap(), permit, signature.as_bytes().to_vec())
(bytes_to_address(&anvil_account).unwrap(), sol_permit, signature.as_bytes().to_vec())
.abi_encode();
let function_signature =

57
src/encoding/evm/encoder_builders.rs
View File

@@ -1,5 +1,7 @@
use std::collections::HashMap;
use std::{collections::HashMap, str::FromStr};
use alloy::signers::local::PrivateKeySigner;
use alloy_primitives::B256;
use tycho_common::{models::Chain as TychoCommonChain, Bytes};
use crate::encoding::{
@@ -9,7 +11,7 @@ use crate::encoding::{
swap_encoder::swap_encoder_registry::SwapEncoderRegistry,
tycho_encoders::{TychoExecutorEncoder, TychoRouterEncoder},
},
models::Chain,
models::{Chain, UserTransferType},
tycho_encoder::TychoEncoder,
};
@@ -17,11 +19,11 @@ use crate::encoding::{
///
/// This struct allows setting a chain and strategy encoder before building the final encoder.
pub struct TychoRouterEncoderBuilder {
swapper_pk: Option<String>,
chain: Option<Chain>,
user_transfer_type: Option<UserTransferType>,
executors_file_path: Option<String>,
router_address: Option<Bytes>,
token_in_already_in_router: Option<bool>,
swapper_pk: Option<String>,
}
impl Default for TychoRouterEncoderBuilder {
@@ -33,11 +35,11 @@ impl Default for TychoRouterEncoderBuilder {
impl TychoRouterEncoderBuilder {
pub fn new() -> Self {
TychoRouterEncoderBuilder {
swapper_pk: None,
chain: None,
executors_file_path: None,
router_address: None,
token_in_already_in_router: None,
swapper_pk: None,
user_transfer_type: None,
}
}
pub fn chain(mut self, chain: TychoCommonChain) -> Self {
@@ -45,6 +47,11 @@ impl TychoRouterEncoderBuilder {
self
}
pub fn user_transfer_type(mut self, user_transfer_type: UserTransferType) -> Self {
self.user_transfer_type = Some(user_transfer_type);
self
}
/// Sets the `executors_file_path` manually.
/// If it's not set, the default path will be used (config/executor_addresses.json)
pub fn executors_file_path(mut self, executors_file_path: String) -> Self {
@@ -59,25 +66,22 @@ impl TychoRouterEncoderBuilder {
self
}
/// Sets the `swapper_pk` for the encoder. This is used to sign permit2 objects. This is only
/// needed if you intend to get the full calldata for the transfer. We do not recommend
/// using this option, you should sign and create the function calldata entirely on your
/// own.
#[deprecated(
note = "This is deprecated and will be removed in the future. You should sign and create the function calldata on your own."
)]
pub fn swapper_pk(mut self, swapper_pk: String) -> Self {
self.swapper_pk = Some(swapper_pk);
self
}
// Sets the `token_in_already_in_router` flag.
// If set to true, the encoder will assume that the token in is already in the router.
// WARNING: this is an advanced feature and should be used with caution. Make sure you have
// checks to make sure that your tokens won't be lost. The Router is not considered safe to hold
// tokens, so if this is not done within the same transaction you will lose your tokens.
pub fn token_in_already_in_router(mut self, token_in_already_in_router: bool) -> Self {
self.token_in_already_in_router = Some(token_in_already_in_router);
self
}
/// Builds the `TychoRouterEncoder` instance using the configured chain.
/// Returns an error if either the chain has not been set.
pub fn build(self) -> Result<Box<dyn TychoEncoder>, EncodingError> {
if let Some(chain) = self.chain {
if let (Some(chain), Some(user_transfer_type)) = (self.chain, self.user_transfer_type) {
let tycho_router_address;
if let Some(address) = self.router_address {
tycho_router_address = address;
@@ -95,17 +99,28 @@ impl TychoRouterEncoderBuilder {
let swap_encoder_registry =
SwapEncoderRegistry::new(self.executors_file_path.clone(), chain.clone())?;
let signer = if let Some(pk) = self.swapper_pk {
let pk = B256::from_str(&pk).map_err(|_| {
EncodingError::FatalError("Invalid swapper private key provided".to_string())
})?;
Some(PrivateKeySigner::from_bytes(&pk).map_err(|_| {
EncodingError::FatalError("Failed to create signer".to_string())
})?)
} else {
None
};
Ok(Box::new(TychoRouterEncoder::new(
chain,
swap_encoder_registry,
self.swapper_pk,
tycho_router_address,
self.token_in_already_in_router
.unwrap_or(false),
user_transfer_type,
signer,
)?))
} else {
Err(EncodingError::FatalError(
"Please set the chain and router address before building the encoder".to_string(),
"Please set the chain and user transfer type before building the encoder"
.to_string(),
))
}
}

473
src/encoding/evm/encoding_utils.rs
View File

@@ -1,14 +1,262 @@
use alloy_primitives::{Keccak256, U256};
use alloy_sol_types::SolValue;
use std::str::FromStr;
use alloy::{
primitives::U256,
signers::{local::PrivateKeySigner, Signature, SignerSync},
};
use alloy_primitives::{Address, Keccak256};
use alloy_sol_types::{eip712_domain, SolStruct, SolValue};
use num_bigint::BigUint;
use tycho_common::Bytes;
use crate::encoding::{
errors::EncodingError,
evm::utils::{biguint_to_u256, bytes_to_address},
models::{EncodedSolution, NativeAction, Solution, Transaction},
evm::{
approvals::permit2::PermitSingle,
utils::{biguint_to_u256, bytes_to_address},
},
models,
models::{EncodedSolution, NativeAction, Solution, Transaction, UserTransferType},
};
/// Encodes a transaction for the Tycho Router using one of its supported swap methods.
///
/// # Overview
///
/// This function provides an **example implementation** of how to encode a call to the Tycho
/// Router. It handles all currently supported swap selectors such as:
/// - `singleSwap`
/// - `singleSwapPermit2`
/// - `sequentialSwap`
/// - `sequentialSwapPermit2`
/// - `splitSwap`
/// - `splitSwapPermit2`
///
/// The encoding includes handling of native asset wrapping/unwrapping, permit2 support,
/// and proper input argument formatting based on the function signature string.
///
/// # ⚠️ Important Responsibility Note
///
/// This function is intended as **an illustrative example only**. **Users must implement
/// their own encoding logic** to ensure:
/// - Full control of parameters passed to the router.
/// - Proper validation and setting of critical inputs such as `minAmountOut`.
/// - Signing of permit2 objects.
///
/// While Tycho is responsible for encoding the swap paths themselves, the input arguments
/// to the router's methods act as **guardrails** for on-chain execution safety.
/// Thus, the user must **take responsibility** for ensuring correctness of all input parameters,
/// including `minAmountOut`, `receiver`, and permit2 logic.
///
/// # Min Amount Out
///
/// The `minAmountOut` calculation used here is just an example.
/// You should ideally:
/// - Query an external service (e.g., DEX aggregators, oracle, off-chain price feed).
/// - Use your own strategy to determine an accurate and safe minimum acceptable output amount.
///
/// ⚠️ If `minAmountOut` is too low, your swap may be front-run or sandwiched, resulting in loss of
/// funds.
///
/// # Parameters
/// - `encoded_solution`: The solution already encoded by Tycho.
/// - `solution`: The high-level solution including tokens, amounts, and receiver info.
/// - `token_in_already_in_router`: Whether the input token is already present in the router.
/// - `router_address`: The address of the Tycho Router contract.
/// - `native_address`: The address used to represent the native token
///
/// # Returns
/// A `Result<Transaction, EncodingError>` that either contains the full transaction data (to,
/// value, data), or an error if the inputs are invalid.
///
/// # Errors
/// - Returns `EncodingError::FatalError` if the function signature is unsupported or required
/// fields (e.g., permit or signature) are missing.
pub fn encode_tycho_router_call(
chain_id: u64,
encoded_solution: EncodedSolution,
solution: &Solution,
user_transfer_type: UserTransferType,
native_address: Bytes,
signer: Option<PrivateKeySigner>,
) -> Result<Transaction, EncodingError> {
let (mut unwrap, mut wrap) = (false, false);
if let Some(action) = solution.native_action.clone() {
match action {
NativeAction::Wrap => wrap = true,
NativeAction::Unwrap => unwrap = true,
}
}
let given_amount = biguint_to_u256(&solution.given_amount);
let min_amount_out = biguint_to_u256(&solution.checked_amount);
let given_token = bytes_to_address(&solution.given_token)?;
let checked_token = bytes_to_address(&solution.checked_token)?;
let receiver = bytes_to_address(&solution.receiver)?;
let n_tokens = U256::from(encoded_solution.n_tokens);
let (permit, signature) = if let Some(p) = encoded_solution.permit {
let permit = Some(
PermitSingle::try_from(&p)
.map_err(|_| EncodingError::InvalidInput("Invalid permit".to_string()))?,
);
let signer = signer
.ok_or(EncodingError::FatalError("Signer must be set to use permit2".to_string()))?;
let signature = sign_permit(chain_id, &p, signer)?;
(permit, signature.as_bytes().to_vec())
} else {
(None, vec![])
};
let method_calldata = if encoded_solution
.function_signature
.contains("singleSwapPermit2")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
permit.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(),
))?,
signature,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.function_signature
.contains("singleSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
user_transfer_type == UserTransferType::TransferFrom,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.function_signature
.contains("sequentialSwapPermit2")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
permit.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(),
))?,
signature,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.function_signature
.contains("sequentialSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
user_transfer_type == UserTransferType::TransferFrom,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.function_signature
.contains("splitSwapPermit2")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
n_tokens,
receiver,
permit.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(),
))?,
signature,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.function_signature
.contains("splitSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
n_tokens,
receiver,
user_transfer_type == UserTransferType::TransferFrom,
encoded_solution.swaps,
)
.abi_encode()
} else {
Err(EncodingError::FatalError("Invalid function signature for Tycho router".to_string()))?
};
let contract_interaction = encode_input(&encoded_solution.function_signature, method_calldata);
let value = if solution.given_token == native_address {
solution.given_amount.clone()
} else {
BigUint::ZERO
};
Ok(Transaction { to: encoded_solution.interacting_with, value, data: contract_interaction })
}
/// Signs a Permit2 `PermitSingle` struct using the EIP-712 signing scheme.
///
/// This function constructs an EIP-712 domain specific to the Permit2 contract and computes the
/// hash of the provided `PermitSingle`. It then uses the given `PrivateKeySigner` to produce
/// a cryptographic signature of the permit.
///
/// # Warning
/// This is only an **example implementation** provided for reference purposes.
/// **Do not rely on this in production.** You should implement your own version.
pub fn sign_permit(
chain_id: u64,
permit_single: &models::PermitSingle,
signer: PrivateKeySigner,
) -> Result<Signature, EncodingError> {
let permit2_address = Address::from_str("0x000000000022D473030F116dDEE9F6B43aC78BA3")
.map_err(|_| EncodingError::FatalError("Permit2 address not valid".to_string()))?;
let domain = eip712_domain! {
name: "Permit2",
chain_id: chain_id,
verifying_contract: permit2_address,
};
let permit_single: PermitSingle = PermitSingle::try_from(permit_single)?;
let hash = permit_single.eip712_signing_hash(&domain);
signer
.sign_hash_sync(&hash)
.map_err(|e| {
EncodingError::FatalError(format!("Failed to sign permit2 approval with error: {e}"))
})
}
/// Encodes the input data for a function call to the given function selector.
pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
let mut hasher = Keccak256::new();
@@ -30,220 +278,3 @@ pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
call_data.extend(encoded_args);
call_data
}
/// Encodes a transaction for the Tycho Router using one of its supported swap methods.
///
/// # Overview
///
/// This function provides an **example implementation** of how to encode a call to the Tycho
/// Router. It handles all currently supported swap selectors such as:
/// - `singleSwap`
/// - `singleSwapPermit2`
/// - `sequentialSwap`
/// - `sequentialSwapPermit2`
/// - `splitSwap`
/// - `splitSwapPermit2`
///
/// The encoding includes handling of native asset wrapping/unwrapping, permit2 support,
/// and proper input argument formatting based on the selector string.
///
/// # ⚠️ Important Responsibility Note
///
/// This function is intended as **an illustrative example only**. **Users must implement
/// their own encoding logic** to ensure:
/// - Full control of parameters passed to the router.
/// - Proper validation and setting of critical inputs such as `minAmountOut`.
///
/// While Tycho is responsible for encoding the swap paths themselves, the input arguments
/// to the router's methods act as **guardrails** for on-chain execution safety.
/// Thus, the user must **take responsibility** for ensuring correctness of all input parameters,
/// including `minAmountOut`, `receiver`, and permit2 logic.
///
/// # Min Amount Out
///
/// The `minAmountOut` calculation used here is just an example.
/// You should ideally:
/// - Query an external service (e.g., DEX aggregators, oracle, off-chain price feed).
/// - Use your own strategy to determine an accurate and safe minimum acceptable output amount.
///
/// ⚠️ If `minAmountOut` is too low, your swap may be front-run or sandwiched, resulting in loss of
/// funds.
///
/// # Parameters
/// - `encoded_solution`: The solution already encoded by Tycho, including selector and swap path.
/// - `solution`: The high-level solution including tokens, amounts, and receiver info.
/// - `token_in_already_in_router`: Whether the input token is already present in the router.
/// - `router_address`: The address of the Tycho Router contract.
/// - `native_address`: The address used to represent the native token
///
/// # Returns
/// A `Result<Transaction, EncodingError>` that either contains the full transaction data (to,
/// value, data), or an error if the inputs are invalid.
///
/// # Errors
/// - Returns `EncodingError::FatalError` if the selector is unsupported or required fields (e.g.,
/// permit or signature) are missing.
pub fn encode_tycho_router_call(
encoded_solution: EncodedSolution,
solution: &Solution,
token_in_already_in_router: bool,
native_address: Bytes,
) -> Result<Transaction, EncodingError> {
let (mut unwrap, mut wrap) = (false, false);
if let Some(action) = solution.native_action.clone() {
match action {
NativeAction::Wrap => wrap = true,
NativeAction::Unwrap => unwrap = true,
}
}
let given_amount = biguint_to_u256(&solution.given_amount);
let min_amount_out = biguint_to_u256(&solution.checked_amount);
let given_token = bytes_to_address(&solution.given_token)?;
let checked_token = bytes_to_address(&solution.checked_token)?;
let receiver = bytes_to_address(&solution.receiver)?;
let n_tokens = U256::from(encoded_solution.n_tokens);
let method_calldata = if encoded_solution
.selector
.contains("singleSwapPermit2")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
encoded_solution
.permit
.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(),
))?,
encoded_solution
.signature
.ok_or(EncodingError::FatalError(
"Signature must be set to use permit2".to_string(),
))?
.as_bytes()
.to_vec(),
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.selector
.contains("singleSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
!token_in_already_in_router,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.selector
.contains("sequentialSwapPermit2")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
encoded_solution
.permit
.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(),
))?,
encoded_solution
.signature
.ok_or(EncodingError::FatalError(
"Signature must be set to use permit2".to_string(),
))?
.as_bytes()
.to_vec(),
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.selector
.contains("sequentialSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
!token_in_already_in_router,
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.selector
.contains("splitSwapPermit2")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
n_tokens,
receiver,
encoded_solution
.permit
.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(),
))?,
encoded_solution
.signature
.ok_or(EncodingError::FatalError(
"Signature must be set to use permit2".to_string(),
))?
.as_bytes()
.to_vec(),
encoded_solution.swaps,
)
.abi_encode()
} else if encoded_solution
.selector
.contains("splitSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
n_tokens,
receiver,
!token_in_already_in_router,
encoded_solution.swaps,
)
.abi_encode()
} else {
Err(EncodingError::FatalError("Invalid selector for Tycho router".to_string()))?
};
let contract_interaction = encode_input(&encoded_solution.selector, method_calldata);
let value = if solution.given_token == native_address {
solution.given_amount.clone()
} else {
BigUint::ZERO
};
Ok(Transaction { to: encoded_solution.interacting_with, value, data: contract_interaction })
}

2
src/encoding/evm/mod.rs
View File

@@ -1,7 +1,7 @@
pub mod approvals;
mod constants;
pub mod encoder_builders;
pub mod encoding_utils;
mod encoding_utils;
mod group_swaps;
pub mod strategy_encoder;
mod swap_encoder;

1865
src/encoding/evm/strategy_encoder/strategy_encoders.rs
View File

File diff suppressed because it is too large Load Diff

44
src/encoding/evm/strategy_encoder/transfer_optimizations.rs
View File

@@ -8,7 +8,7 @@ use crate::encoding::{
constants::{CALLBACK_CONSTRAINED_PROTOCOLS, IN_TRANSFER_REQUIRED_PROTOCOLS},
group_swaps::SwapGroup,
},
models::TransferType,
models::{TransferType, UserTransferType},
};
/// A struct that defines how the tokens will be transferred into the given pool given the solution.
@@ -16,7 +16,7 @@ use crate::encoding::{
pub struct TransferOptimization {
native_token: Bytes,
wrapped_token: Bytes,
token_in_already_in_router: bool,
user_transfer_type: UserTransferType,
router_address: Bytes,
}
@@ -24,15 +24,10 @@ impl TransferOptimization {
pub fn new(
native_token: Bytes,
wrapped_token: Bytes,
token_in_already_in_router: bool,
user_transfer_type: UserTransferType,
router_address: Bytes,
) -> Self {
TransferOptimization {
native_token,
wrapped_token,
token_in_already_in_router,
router_address,
}
TransferOptimization { native_token, wrapped_token, user_transfer_type, router_address }
}
/// Returns the transfer type that should be used for the current transfer.
@@ -55,7 +50,7 @@ impl TransferOptimization {
TransferType::Transfer
} else if is_first_swap {
if in_transfer_required {
if self.token_in_already_in_router {
if self.user_transfer_type == UserTransferType::None {
// Transfer from router to pool.
TransferType::Transfer
} else {
@@ -64,7 +59,7 @@ impl TransferOptimization {
}
// in transfer is not necessary for these protocols. Only make a transfer from the
// swapper to the router if the tokens are not already in the router
} else if !self.token_in_already_in_router {
} else if self.user_transfer_type != UserTransferType::None {
// Transfer from swapper to router using.
TransferType::TransferFrom
} else {
@@ -146,30 +141,30 @@ mod tests {
#[rstest]
// First swap tests
// WETH -(univ2)-> DAI we expect a transfer from the user to the protocol
#[case(weth(), weth(), "uniswap_v2".to_string(), false, false,false, TransferType::TransferFrom)]
#[case(weth(), weth(), "uniswap_v2".to_string(), false, UserTransferType::TransferFrom,false, TransferType::TransferFrom)]
// Native token swap. No transfer is needed
#[case(eth(), eth(), "uniswap_v2".to_string(),false, false,false, TransferType::None)]
#[case(eth(), eth(), "uniswap_v2".to_string(),false, UserTransferType::TransferFrom,false, TransferType::None)]
// ETH -(wrap)-> WETH -(univ2)-> DAI. Only a transfer from the router into the protocol is
// needed
#[case(eth(), weth(), "uniswap_v2".to_string(),true, false,false,TransferType::Transfer)]
#[case(eth(), weth(), "uniswap_v2".to_string(),true, UserTransferType::TransferFrom,false,TransferType::Transfer)]
// USDC -(univ2)-> DAI and the tokens are already in the router. Only a transfer from the router
// to the protocol is needed
#[case(usdc(), usdc(), "uniswap_v2".to_string(),false, true,false, TransferType::Transfer)]
#[case(usdc(), usdc(), "uniswap_v2".to_string(),false, UserTransferType::None,false, TransferType::Transfer)]
// USDC -(curve)-> DAI and the tokens are already in the router. No transfer is needed
#[case(usdc(), usdc(), "vm:curve".to_string(),false, true, false,TransferType::None)]
#[case(usdc(), usdc(), "vm:curve".to_string(),false, UserTransferType::None, false,TransferType::None)]
// other swaps tests
// tokens need to be transferred into the pool
#[case(weth(), usdc(), "uniswap_v2".to_string(), false, false,false, TransferType::Transfer)]
#[case(weth(), usdc(), "uniswap_v2".to_string(), false, UserTransferType::TransferFrom,false, TransferType::Transfer)]
// tokens are already in the pool (optimization)
#[case(weth(), usdc(), "uniswap_v2".to_string(), false, false, true, TransferType::None)]
#[case(weth(), usdc(), "uniswap_v2".to_string(), false, UserTransferType::TransferFrom, true, TransferType::None)]
// tokens are already in the router and don't need a transfer
#[case(weth(), usdc(), "vm:curve".to_string(), false, false, false, TransferType::None)]
#[case(weth(), usdc(), "vm:curve".to_string(), false, UserTransferType::TransferFrom, false, TransferType::None)]
fn test_get_transfers(
#[case] given_token: Bytes,
#[case] swap_token_in: Bytes,
#[case] protocol: String,
#[case] wrap: bool,
#[case] token_in_already_in_router: bool,
#[case] user_transfer_type: UserTransferType,
#[case] in_between_swap_optimization: bool,
#[case] expected_transfer: TransferType,
) {
@@ -192,7 +187,7 @@ mod tests {
swaps,
};
let optimization =
TransferOptimization::new(eth(), weth(), token_in_already_in_router, router_address());
TransferOptimization::new(eth(), weth(), user_transfer_type, router_address());
let transfer = optimization.get_transfers(
swap.clone(),
given_token,
@@ -224,7 +219,12 @@ mod tests {
#[case] expected_receiver: Bytes,
#[case] expected_optimization: bool,
) {
let optimization = TransferOptimization::new(eth(), weth(), false, router_address());
let optimization = TransferOptimization::new(
eth(),
weth(),
UserTransferType::TransferFrom,
router_address(),
);
let next_swap = if protocol.is_none() {
None

4
src/encoding/evm/swap_encoder/swap_encoders.rs
View File

@@ -19,7 +19,6 @@ use crate::encoding::{
///
/// # Fields
/// * `executor_address` - The address of the executor contract that will perform the swap.
/// * `swap_selector` - The selector of the swap function in the executor contract.
#[derive(Clone)]
pub struct UniswapV2SwapEncoder {
executor_address: String,
@@ -78,7 +77,6 @@ impl SwapEncoder for UniswapV2SwapEncoder {
///
/// # Fields
/// * `executor_address` - The address of the executor contract that will perform the swap.
/// * `swap_selector` - The selector of the swap function in the executor contract.
#[derive(Clone)]
pub struct UniswapV3SwapEncoder {
executor_address: String,
@@ -140,8 +138,6 @@ impl SwapEncoder for UniswapV3SwapEncoder {
///
/// # Fields
/// * `executor_address` - The address of the executor contract that will perform the swap.
/// * `swap_selector` - The selector of the swap function in the executor contract.
/// * `callback_selector` - The selector of the callback function in the executor contract.
#[derive(Clone)]
pub struct UniswapV4SwapEncoder {
executor_address: String,

2306
src/encoding/evm/tycho_encoders.rs
View File

File diff suppressed because it is too large Load Diff

80
src/encoding/models.rs
View File

@@ -1,4 +1,4 @@
use alloy_primitives::PrimitiveSignature as Signature;
use clap::ValueEnum;
use hex;
use num_bigint::BigUint;
use serde::{Deserialize, Serialize};
@@ -7,9 +7,32 @@ use tycho_common::{
Bytes,
};
use crate::encoding::{
errors::EncodingError, evm::approvals::permit2::PermitSingle, serde_primitives::biguint_string,
};
use crate::encoding::{errors::EncodingError, serde_primitives::biguint_string};
/// Specifies the method for transferring user funds into Tycho execution.
///
/// Options:
///
/// - `TransferFromPermit2`: Use Permit2 for token transfer.
/// - You must manually approve the Permit2 contract and sign the permit object externally
/// (outside `tycho-execution`).
///
/// - `TransferFrom`: Use standard ERC-20 approval and `transferFrom`.
/// - You must approve the Tycho Router contract to spend your tokens via standard `approve()`
/// calls.
///
/// - `None`: No transfer will be performed.
/// - Assumes the tokens are already present in the Tycho Router.
/// - **Warning**: This is an advanced mode. Ensure your logic guarantees that the tokens are
/// already in the router at the time of execution.
/// - The Tycho router is **not** designed to safely hold tokens. If tokens are not transferred
/// and used in the **same transaction**, they will be permanently lost.
#[derive(Clone, Debug, PartialEq, ValueEnum)]
pub enum UserTransferType {
TransferFromPermit2,
TransferFrom,
None,
}
/// Represents a solution containing details describing an order, and instructions for filling
/// the order.
@@ -82,7 +105,6 @@ impl Swap {
/// * `to`: Address of the contract to call with the calldata
/// * `value`: Native token value to be sent with the transaction.
/// * `data`: Encoded calldata for the transaction.
/// * `selector`: Only relevant for direct executions. The selector of the function to be called.
#[derive(Clone, Debug)]
pub struct Transaction {
pub to: Bytes,
@@ -95,18 +117,58 @@ pub struct Transaction {
/// # Fields
/// * `swaps`: Encoded swaps to be executed.
/// * `interacting_with`: Address of the contract to be called.
/// * `selector`: The selector of the function to be called.
/// * `function_signature`: The signature of the function to be called.
/// * `n_tokens`: Number of tokens in the swap.
/// * `permit`: Optional permit for the swap (if permit2 is enabled).
/// * `signature`: Optional signature for the swap (if permit2 is enabled).
#[derive(Clone, Debug)]
pub struct EncodedSolution {
pub swaps: Vec<u8>,
pub interacting_with: Bytes,
pub selector: String,
pub function_signature: String,
pub n_tokens: usize,
pub permit: Option<PermitSingle>,
pub signature: Option<Signature>,
}
/// Represents a single permit for permit2.
///
/// # Fields
/// * `details`: The details of the permit, such as token, amount, expiration, and nonce.
/// * `spender`: The address authorized to spend the tokens.
/// * `sig_deadline`: The deadline (as a timestamp) for the permit signature
#[derive(Debug, Clone)]
pub struct PermitSingle {
pub details: PermitDetails,
pub spender: Bytes,
pub sig_deadline: BigUint,
}
/// Details of a permit.
///
/// # Fields
/// * `token`: The token address for which the permit is granted.
/// * `amount`: The amount of tokens approved for spending.
/// * `expiration`: The expiration time (as a timestamp) for the permit.
/// * `nonce`: The unique nonce to prevent replay attacks.
#[derive(Debug, Clone)]
pub struct PermitDetails {
pub token: Bytes,
pub amount: BigUint,
pub expiration: BigUint,
pub nonce: BigUint,
}
impl PartialEq for PermitSingle {
fn eq(&self, other: &Self) -> bool {
self.details == other.details && self.spender == other.spender
// sig_deadline is intentionally ignored
}
}
impl PartialEq for PermitDetails {
fn eq(&self, other: &Self) -> bool {
self.token == other.token && self.amount == other.amount && self.nonce == other.nonce
// expiration is intentionally ignored
}
}
/// Represents necessary attributes for encoding an order.

7
src/encoding/tycho_encoder.rs
View File

@@ -26,8 +26,8 @@ use crate::encoding::{
/// outer function call arguments themselves** and verify that they enforce correct and secure
/// behavior.
pub trait TychoEncoder {
/// Encodes a list of [`Solution`]s into [`EncodedSolution`]s, which include the selector and
/// internal swap call data.
/// Encodes a list of [`Solution`]s into [`EncodedSolution`]s, which include the function
/// signature and internal swap call data.
///
/// This method gives users maximum flexibility and control. It **does not** produce full
/// transaction objects. Users are responsible for:
@@ -36,7 +36,7 @@ pub trait TychoEncoder {
///
/// # Returns
/// A vector of encoded solutions, each containing:
/// - The Tycho method selector
/// - The Tycho method function signature
/// - The encoded swap path
/// - Additional metadata (e.g., permit2 information)
///
@@ -61,6 +61,7 @@ pub trait TychoEncoder {
///
/// # Returns
/// A vector of fully constructed [`Transaction`]s that can be submitted to a node or bundler.
#[deprecated(note = "Please use `encode_solutions` instead")]
fn encode_full_calldata(
&self,
solutions: Vec<Solution>,