jsonrpc_core/types/
version.rs

1//! jsonrpc version field
2use serde::de::{self, Visitor};
3use serde::{Deserialize, Deserializer, Serialize, Serializer};
4
5use std::fmt;
6
7/// Protocol Version
8#[derive(Debug, PartialEq, Clone, Copy, Hash, Eq)]
9pub enum Version {
10	/// JSONRPC 2.0
11	V2,
12}
13
14impl Serialize for Version {
15	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
16	where
17		S: Serializer,
18	{
19		match *self {
20			Version::V2 => serializer.serialize_str("2.0"),
21		}
22	}
23}
24
25impl<'a> Deserialize<'a> for Version {
26	fn deserialize<D>(deserializer: D) -> Result<Version, D::Error>
27	where
28		D: Deserializer<'a>,
29	{
30		deserializer.deserialize_identifier(VersionVisitor)
31	}
32}
33
34struct VersionVisitor;
35
36impl<'a> Visitor<'a> for VersionVisitor {
37	type Value = Version;
38
39	fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
40		formatter.write_str("a string")
41	}
42
43	fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
44	where
45		E: de::Error,
46	{
47		match value {
48			"2.0" => Ok(Version::V2),
49			_ => Err(de::Error::custom("invalid version")),
50		}
51	}
52}
jsonrpc_core/types/version.rs

jsonrpc_core/types/
version.rs
