educe/common/tools/
hash_type.rs

1use std::{
2    cmp::Ordering,
3    fmt::{self, Display, Formatter},
4    hash::{Hash, Hasher},
5    str::FromStr,
6};
7
8use proc_macro2::Span;
9use quote::ToTokens;
10use syn::{spanned::Spanned, Path, Type};
11
12#[derive(Debug, Clone)]
13pub(crate) struct HashType(String, Span);
14
15impl PartialEq for HashType {
16    #[inline]
17    fn eq(&self, other: &Self) -> bool {
18        self.0.eq(&other.0)
19    }
20}
21
22impl Eq for HashType {}
23
24impl PartialOrd for HashType {
25    #[inline]
26    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
27        Some(self.cmp(other))
28    }
29}
30
31impl Ord for HashType {
32    #[inline]
33    fn cmp(&self, other: &Self) -> Ordering {
34        self.0.cmp(&other.0)
35    }
36}
37
38impl Hash for HashType {
39    #[inline]
40    fn hash<H: Hasher>(&self, state: &mut H) {
41        Hash::hash(&self.0, state);
42    }
43}
44
45impl Display for HashType {
46    #[inline]
47    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
48        Display::fmt(&self.0.replace("& '", "&'"), f)
49    }
50}
51
52impl From<Type> for HashType {
53    #[inline]
54    fn from(value: Type) -> Self {
55        Self::from(&value)
56    }
57}
58
59impl From<&Type> for HashType {
60    #[inline]
61    fn from(value: &Type) -> Self {
62        Self(value.into_token_stream().to_string(), value.span())
63    }
64}
65
66impl From<Path> for HashType {
67    #[inline]
68    fn from(value: Path) -> Self {
69        Self::from(&value)
70    }
71}
72
73impl From<&Path> for HashType {
74    #[inline]
75    fn from(value: &Path) -> Self {
76        Self(value.into_token_stream().to_string(), value.span())
77    }
78}
79
80#[allow(dead_code)]
81impl HashType {
82    #[inline]
83    pub(crate) fn to_type(&self) -> Type {
84        syn::parse_str(self.0.as_str()).unwrap()
85    }
86
87    #[inline]
88    pub(crate) fn span(&self) -> Span {
89        self.1
90    }
91}
92
93impl ToTokens for HashType {
94    #[inline]
95    fn to_tokens(&self, token_stream: &mut proc_macro2::TokenStream) {
96        let ty = proc_macro2::TokenStream::from_str(self.0.as_str()).unwrap();
97
98        token_stream.extend(ty);
99    }
100}
educe/common/tools/hash_type.rs

educe/common/tools/
hash_type.rs
