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

// Copyright 2019-2025 PureStake Inc.
// This file is part of Moonbeam.

// Moonbeam is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Moonbeam is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Moonbeam.  If not, see <http://www.gnu.org/licenses/>.

//! Provide serialization functions for various types and formats.

use ethereum_types::{H256, U256};
use serde::{
	ser::{Error, SerializeSeq},
	Serializer,
};
use sp_runtime::traits::UniqueSaturatedInto;

pub fn seq_h256_serialize<S>(data: &Option<Vec<H256>>, serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	if let Some(vec) = data {
		let mut seq = serializer.serialize_seq(Some(vec.len()))?;
		for hash in vec {
			seq.serialize_element(&format!("{:x}", hash))?;
		}
		seq.end()
	} else {
		let seq = serializer.serialize_seq(Some(0))?;
		seq.end()
	}
}

pub fn bytes_0x_serialize<S>(bytes: &[u8], serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	serializer.serialize_str(&format!("0x{}", hex::encode(bytes)))
}

pub fn option_bytes_0x_serialize<S>(
	bytes: &Option<Vec<u8>>,
	serializer: S,
) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	if let Some(bytes) = bytes.as_ref() {
		return serializer.serialize_str(&format!("0x{}", hex::encode(&bytes[..])));
	}
	Err(S::Error::custom("String serialize error."))
}

pub fn opcode_serialize<S>(opcode: &[u8], serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	let d = std::str::from_utf8(opcode)
		.map_err(|_| S::Error::custom("Opcode serialize error."))?
		.to_uppercase();
	serializer.serialize_str(&d)
}

pub fn string_serialize<S>(value: &[u8], serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	let d = std::str::from_utf8(value)
		.map_err(|_| S::Error::custom("String serialize error."))?
		.to_string();
	serializer.serialize_str(&d)
}

pub fn option_string_serialize<S>(value: &Option<Vec<u8>>, serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	if let Some(value) = value.as_ref() {
		let d = std::str::from_utf8(&value[..])
			.map_err(|_| S::Error::custom("String serialize error."))?
			.to_string();
		return serializer.serialize_str(&d);
	}
	Err(S::Error::custom("String serialize error."))
}

pub fn u256_serialize<S>(data: &U256, serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	serializer.serialize_u64(UniqueSaturatedInto::<u64>::unique_saturated_into(*data))
}

pub fn h256_serialize<S>(data: &H256, serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	serializer.serialize_str(&format!("{:x}", data))
}

pub fn h256_0x_serialize<S>(data: &H256, serializer: S) -> Result<S::Ok, S::Error>
where
	S: Serializer,
{
	serializer.serialize_str(&format!("0x{:x}", data))
}