ethers_abi/param_type/
deserialize.rs

1// Copyright 2015-2020 Parity Technologies
2//
3// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
4// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
5// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
6// option. This file may not be copied, modified, or distributed
7// except according to those terms.
8use super::{ParamType, Reader};
9#[cfg(not(feature = "std"))]
10use crate::no_std_prelude::*;
11use core::fmt;
12use serde::{
13	de::{Error as SerdeError, Visitor},
14	Deserialize, Deserializer,
15};
16
17impl<'a> Deserialize<'a> for ParamType {
18	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
19	where
20		D: Deserializer<'a>,
21	{
22		deserializer.deserialize_identifier(ParamTypeVisitor)
23	}
24}
25
26struct ParamTypeVisitor;
27
28impl<'a> Visitor<'a> for ParamTypeVisitor {
29	type Value = ParamType;
30
31	fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
32		write!(formatter, "a correct name of abi-encodable parameter type")
33	}
34
35	fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
36	where
37		E: SerdeError,
38	{
39		Reader::read(value).map_err(|e| SerdeError::custom(format!("{e:?}").as_str()))
40	}
41
42	fn visit_string<E>(self, value: String) -> Result<Self::Value, E>
43	where
44		E: SerdeError,
45	{
46		self.visit_str(value.as_str())
47	}
48}
49
50#[cfg(test)]
51mod tests {
52	#[cfg(not(feature = "std"))]
53	use crate::no_std_prelude::*;
54	use crate::ParamType;
55
56	#[test]
57	fn param_type_deserialization() {
58		let s = r#"["address", "bytes", "bytes32", "bool", "string", "int", "uint", "address[]", "uint[3]", "bool[][5]", "tuple[]"]"#;
59		let deserialized: Vec<ParamType> = serde_json::from_str(s).unwrap();
60		assert_eq!(
61			deserialized,
62			vec![
63				ParamType::Address,
64				ParamType::Bytes,
65				ParamType::FixedBytes(32),
66				ParamType::Bool,
67				ParamType::String,
68				ParamType::Int(256),
69				ParamType::Uint(256),
70				ParamType::Array(Box::new(ParamType::Address)),
71				ParamType::FixedArray(Box::new(ParamType::Uint(256)), 3),
72				ParamType::FixedArray(Box::new(ParamType::Array(Box::new(ParamType::Bool))), 5),
73				ParamType::Array(Box::new(ParamType::Tuple(vec![]))),
74			]
75		);
76	}
77}
ethers_abi/param_type/deserialize.rs

ethers_abi/param_type/
deserialize.rs
