reth_primitives/transaction/
tx_type.rs

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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
use alloy_consensus::{
    constants::{
        EIP1559_TX_TYPE_ID, EIP2930_TX_TYPE_ID, EIP4844_TX_TYPE_ID, EIP7702_TX_TYPE_ID,
        LEGACY_TX_TYPE_ID,
    },
    Typed2718,
};
use alloy_primitives::{U64, U8};
use alloy_rlp::{Decodable, Encodable};
use derive_more::Display;
use reth_primitives_traits::InMemorySize;
use serde::{Deserialize, Serialize};

/// Identifier parameter for legacy transaction
#[cfg(any(test, feature = "reth-codec"))]
pub const COMPACT_IDENTIFIER_LEGACY: usize = 0;

/// Identifier parameter for EIP-2930 transaction
#[cfg(any(test, feature = "reth-codec"))]
pub const COMPACT_IDENTIFIER_EIP2930: usize = 1;

/// Identifier parameter for EIP-1559 transaction
#[cfg(any(test, feature = "reth-codec"))]
pub const COMPACT_IDENTIFIER_EIP1559: usize = 2;

/// For backwards compatibility purposes only 2 bits of the type are encoded in the identifier
/// parameter. In the case of a [`COMPACT_EXTENDED_IDENTIFIER_FLAG`], the full transaction type is
/// read from the buffer as a single byte.
#[cfg(any(test, feature = "reth-codec"))]
pub const COMPACT_EXTENDED_IDENTIFIER_FLAG: usize = 3;

/// Transaction Type
///
/// Currently being used as 2-bit type when encoding it to `reth_codecs::Compact` on
/// [`crate::TransactionSigned`]. Adding more transaction types will break the codec and
/// database format.
///
/// Other required changes when adding a new type can be seen on [PR#3953](https://github.com/paradigmxyz/reth/pull/3953/files).
#[derive(
    Clone,
    Copy,
    Debug,
    PartialEq,
    Eq,
    PartialOrd,
    Ord,
    Default,
    Serialize,
    Deserialize,
    Hash,
    Display,
)]
#[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
#[cfg_attr(any(test, feature = "reth-codec"), reth_codecs::add_arbitrary_tests(compact))]
#[display("tx type: {_variant}")]
pub enum TxType {
    /// Legacy transaction pre EIP-2929
    #[default]
    #[display("legacy (0)")]
    Legacy = 0_isize,
    /// AccessList transaction
    #[display("eip2930 (1)")]
    Eip2930 = 1_isize,
    /// Transaction with Priority fee
    #[display("eip1559 (2)")]
    Eip1559 = 2_isize,
    /// Shard Blob Transactions - EIP-4844
    #[display("eip4844 (3)")]
    Eip4844 = 3_isize,
    /// EOA Contract Code Transactions - EIP-7702
    #[display("eip7702 (4)")]
    Eip7702 = 4_isize,
    /// Optimism Deposit transaction.
    #[cfg(feature = "optimism")]
    #[display("deposit (126)")]
    Deposit = 126_isize,
}

impl TxType {
    /// The max type reserved by an EIP.
    pub const MAX_RESERVED_EIP: Self = Self::Eip7702;

    /// Check if the transaction type has an access list.
    pub const fn has_access_list(&self) -> bool {
        match self {
            Self::Legacy => false,
            Self::Eip2930 | Self::Eip1559 | Self::Eip4844 | Self::Eip7702 => true,
            #[cfg(feature = "optimism")]
            Self::Deposit => false,
        }
    }
}

impl Typed2718 for TxType {
    fn ty(&self) -> u8 {
        (*self).into()
    }
}

impl InMemorySize for TxType {
    /// Calculates a heuristic for the in-memory size of the [`TxType`].
    #[inline]
    fn size(&self) -> usize {
        core::mem::size_of::<Self>()
    }
}

impl From<TxType> for u8 {
    fn from(value: TxType) -> Self {
        match value {
            TxType::Legacy => LEGACY_TX_TYPE_ID,
            TxType::Eip2930 => EIP2930_TX_TYPE_ID,
            TxType::Eip1559 => EIP1559_TX_TYPE_ID,
            TxType::Eip4844 => EIP4844_TX_TYPE_ID,
            TxType::Eip7702 => EIP7702_TX_TYPE_ID,
            #[cfg(feature = "optimism")]
            TxType::Deposit => op_alloy_consensus::DEPOSIT_TX_TYPE_ID,
        }
    }
}

impl From<TxType> for U8 {
    fn from(value: TxType) -> Self {
        Self::from(u8::from(value))
    }
}

impl TryFrom<u8> for TxType {
    type Error = &'static str;

    fn try_from(value: u8) -> Result<Self, Self::Error> {
        #[cfg(feature = "optimism")]
        if value == Self::Deposit {
            return Ok(Self::Deposit)
        }

        if value == Self::Legacy {
            return Ok(Self::Legacy)
        } else if value == Self::Eip2930 {
            return Ok(Self::Eip2930)
        } else if value == Self::Eip1559 {
            return Ok(Self::Eip1559)
        } else if value == Self::Eip4844 {
            return Ok(Self::Eip4844)
        } else if value == Self::Eip7702 {
            return Ok(Self::Eip7702)
        }

        Err("invalid tx type")
    }
}

impl TryFrom<u64> for TxType {
    type Error = &'static str;

    fn try_from(value: u64) -> Result<Self, Self::Error> {
        let value: u8 = value.try_into().map_err(|_| "invalid tx type")?;
        Self::try_from(value)
    }
}

impl TryFrom<U64> for TxType {
    type Error = &'static str;

    fn try_from(value: U64) -> Result<Self, Self::Error> {
        value.to::<u64>().try_into()
    }
}

#[cfg(any(test, feature = "reth-codec"))]
impl reth_codecs::Compact for TxType {
    fn to_compact<B>(&self, buf: &mut B) -> usize
    where
        B: bytes::BufMut + AsMut<[u8]>,
    {
        use reth_codecs::txtype::*;

        match self {
            Self::Legacy => COMPACT_IDENTIFIER_LEGACY,
            Self::Eip2930 => COMPACT_IDENTIFIER_EIP2930,
            Self::Eip1559 => COMPACT_IDENTIFIER_EIP1559,
            Self::Eip4844 => {
                buf.put_u8(EIP4844_TX_TYPE_ID);
                COMPACT_EXTENDED_IDENTIFIER_FLAG
            }
            Self::Eip7702 => {
                buf.put_u8(EIP7702_TX_TYPE_ID);
                COMPACT_EXTENDED_IDENTIFIER_FLAG
            }
            #[cfg(feature = "optimism")]
            Self::Deposit => {
                buf.put_u8(op_alloy_consensus::DEPOSIT_TX_TYPE_ID);
                COMPACT_EXTENDED_IDENTIFIER_FLAG
            }
        }
    }

    // For backwards compatibility purposes only 2 bits of the type are encoded in the identifier
    // parameter. In the case of a [`COMPACT_EXTENDED_IDENTIFIER_FLAG`], the full transaction type
    // is read from the buffer as a single byte.
    fn from_compact(mut buf: &[u8], identifier: usize) -> (Self, &[u8]) {
        use bytes::Buf;
        (
            match identifier {
                reth_codecs::txtype::COMPACT_IDENTIFIER_LEGACY => Self::Legacy,
                reth_codecs::txtype::COMPACT_IDENTIFIER_EIP2930 => Self::Eip2930,
                reth_codecs::txtype::COMPACT_IDENTIFIER_EIP1559 => Self::Eip1559,
                reth_codecs::txtype::COMPACT_EXTENDED_IDENTIFIER_FLAG => {
                    let extended_identifier = buf.get_u8();
                    match extended_identifier {
                        EIP4844_TX_TYPE_ID => Self::Eip4844,
                        EIP7702_TX_TYPE_ID => Self::Eip7702,
                        #[cfg(feature = "optimism")]
                        op_alloy_consensus::DEPOSIT_TX_TYPE_ID => Self::Deposit,
                        _ => panic!("Unsupported TxType identifier: {extended_identifier}"),
                    }
                }
                _ => panic!("Unknown identifier for TxType: {identifier}"),
            },
            buf,
        )
    }
}

impl PartialEq<u8> for TxType {
    fn eq(&self, other: &u8) -> bool {
        *self as u8 == *other
    }
}

impl PartialEq<TxType> for u8 {
    fn eq(&self, other: &TxType) -> bool {
        *self == *other as Self
    }
}

impl Encodable for TxType {
    fn encode(&self, out: &mut dyn bytes::BufMut) {
        (*self as u8).encode(out);
    }

    fn length(&self) -> usize {
        1
    }
}

impl Decodable for TxType {
    fn decode(buf: &mut &[u8]) -> alloy_rlp::Result<Self> {
        let ty = u8::decode(buf)?;

        Self::try_from(ty).map_err(alloy_rlp::Error::Custom)
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use alloy_primitives::hex;
    use reth_codecs::Compact;
    use rstest::rstest;

    #[rstest]
    #[case(U64::from(LEGACY_TX_TYPE_ID), Ok(TxType::Legacy))]
    #[case(U64::from(EIP2930_TX_TYPE_ID), Ok(TxType::Eip2930))]
    #[case(U64::from(EIP1559_TX_TYPE_ID), Ok(TxType::Eip1559))]
    #[case(U64::from(EIP4844_TX_TYPE_ID), Ok(TxType::Eip4844))]
    #[case(U64::from(EIP7702_TX_TYPE_ID), Ok(TxType::Eip7702))]
    #[cfg_attr(
        feature = "optimism",
        case(U64::from(op_alloy_consensus::DEPOSIT_TX_TYPE_ID), Ok(TxType::Deposit))
    )]
    #[case(U64::MAX, Err("invalid tx type"))]
    fn test_u64_to_tx_type(#[case] input: U64, #[case] expected: Result<TxType, &'static str>) {
        let tx_type_result = TxType::try_from(input);
        assert_eq!(tx_type_result, expected);
    }

    #[rstest]
    #[case(TxType::Legacy, COMPACT_IDENTIFIER_LEGACY, vec![])]
    #[case(TxType::Eip2930, COMPACT_IDENTIFIER_EIP2930, vec![])]
    #[case(TxType::Eip1559, COMPACT_IDENTIFIER_EIP1559, vec![])]
    #[case(TxType::Eip4844, COMPACT_EXTENDED_IDENTIFIER_FLAG, vec![EIP4844_TX_TYPE_ID])]
    #[case(TxType::Eip7702, COMPACT_EXTENDED_IDENTIFIER_FLAG, vec![EIP7702_TX_TYPE_ID])]
    #[cfg_attr(feature = "optimism", case(TxType::Deposit, COMPACT_EXTENDED_IDENTIFIER_FLAG, vec![op_alloy_consensus::DEPOSIT_TX_TYPE_ID]))]
    fn test_txtype_to_compact(
        #[case] tx_type: TxType,
        #[case] expected_identifier: usize,
        #[case] expected_buf: Vec<u8>,
    ) {
        let mut buf = vec![];
        let identifier = tx_type.to_compact(&mut buf);

        assert_eq!(identifier, expected_identifier, "Unexpected identifier for TxType {tx_type:?}",);
        assert_eq!(buf, expected_buf, "Unexpected buffer for TxType {tx_type:?}",);
    }

    #[rstest]
    #[case(TxType::Legacy, COMPACT_IDENTIFIER_LEGACY, vec![])]
    #[case(TxType::Eip2930, COMPACT_IDENTIFIER_EIP2930, vec![])]
    #[case(TxType::Eip1559, COMPACT_IDENTIFIER_EIP1559, vec![])]
    #[case(TxType::Eip4844, COMPACT_EXTENDED_IDENTIFIER_FLAG, vec![EIP4844_TX_TYPE_ID])]
    #[case(TxType::Eip7702, COMPACT_EXTENDED_IDENTIFIER_FLAG, vec![EIP7702_TX_TYPE_ID])]
    #[cfg_attr(feature = "optimism", case(TxType::Deposit, COMPACT_EXTENDED_IDENTIFIER_FLAG, vec![op_alloy_consensus::DEPOSIT_TX_TYPE_ID]))]
    fn test_txtype_from_compact(
        #[case] expected_type: TxType,
        #[case] identifier: usize,
        #[case] buf: Vec<u8>,
    ) {
        let (actual_type, remaining_buf) = TxType::from_compact(&buf, identifier);

        assert_eq!(actual_type, expected_type, "Unexpected TxType for identifier {identifier}");
        assert!(remaining_buf.is_empty(), "Buffer not fully consumed for identifier {identifier}");
    }

    #[rstest]
    #[case(&hex!("80"), Ok(TxType::Legacy))]
    #[case(&[EIP2930_TX_TYPE_ID], Ok(TxType::Eip2930))]
    #[case(&[EIP1559_TX_TYPE_ID], Ok(TxType::Eip1559))]
    #[case(&[EIP4844_TX_TYPE_ID], Ok(TxType::Eip4844))]
    #[case(&[EIP7702_TX_TYPE_ID], Ok(TxType::Eip7702))]
    #[case(&[u8::MAX], Err(alloy_rlp::Error::InputTooShort))]
    #[cfg_attr(feature = "optimism", case(&[op_alloy_consensus::DEPOSIT_TX_TYPE_ID], Ok(TxType::Deposit)))]
    fn decode_tx_type(#[case] input: &[u8], #[case] expected: Result<TxType, alloy_rlp::Error>) {
        let tx_type_result = TxType::decode(&mut &input[..]);
        assert_eq!(tx_type_result, expected)
    }
}