alloy-sol-macro 0.6.2

Solidity to Rust procedural macro
Documentation 
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

//! [`ItemUdt`] expansion.

use super::{ty::expand_rust_type, ExpCtxt};
use crate::expand::expand_type;
use ast::ItemUdt;
use proc_macro2::TokenStream;
use quote::quote;
use syn::Result;

pub(super) fn expand(cx: &ExpCtxt<'_>, udt: &ItemUdt) -> Result<TokenStream> {
    let ItemUdt { name, ty, attrs, .. } = udt;

    let (sol_attrs, mut attrs) = crate::attr::SolAttrs::parse(attrs)?;
    cx.type_derives(&mut attrs, std::iter::once(ty), true);

    let underlying_sol = expand_type(ty);
    let underlying_rust = expand_rust_type(ty);

    let type_check_body = if let Some(lit_str) = sol_attrs.type_check {
        let func_path: syn::Path = lit_str.parse()?;
        quote! {
            <#underlying_sol as ::alloy_sol_types::SolType>::type_check(token)?;
            #func_path(token)
        }
    } else {
        quote! {
            <#underlying_sol as ::alloy_sol_types::SolType>::type_check(token)
        }
    };

    let tokens = quote! {
        #(#attrs)*
        #[allow(non_camel_case_types, non_snake_case)]
        #[derive(Clone)]
        pub struct #name(#underlying_rust);

        #[automatically_derived]
        impl ::alloy_sol_types::private::SolTypeValue<#name> for #underlying_rust {
            #[inline]
            fn stv_to_tokens(&self) -> <#underlying_sol as ::alloy_sol_types::SolType>::Token<'_> {
                ::alloy_sol_types::private::SolTypeValue::<#underlying_sol>::stv_to_tokens(self)
            }

            #[inline]
            fn stv_eip712_data_word(&self) -> ::alloy_sol_types::Word {
                <#underlying_sol as ::alloy_sol_types::SolType>::tokenize(self).0
            }

            #[inline]
            fn stv_abi_encode_packed_to(&self, out: &mut ::alloy_sol_types::private::Vec<u8>) {
                <#underlying_sol as ::alloy_sol_types::SolType>::abi_encode_packed_to(self, out)
            }
        }

        #[automatically_derived]
        impl #name {
            /// The Solidity type name.
            pub const NAME: &'static str = stringify!(@name);

            /// Convert from the underlying value type.
            #[inline]
            pub const fn from(value: #underlying_rust) -> Self {
                Self(value)
            }

            /// Return the underlying value.
            #[inline]
            pub const fn into(self) -> #underlying_rust {
                self.0
            }

            /// Return the single encoding of this value, delegating to the
            /// underlying type.
            #[inline]
            pub fn abi_encode(&self) -> ::alloy_sol_types::private::Vec<u8> {
                <Self as ::alloy_sol_types::SolType>::abi_encode(&self.0)
            }

            /// Return the packed encoding of this value, delegating to the
            /// underlying type.
            #[inline]
            pub fn abi_encode_packed(&self) -> ::alloy_sol_types::private::Vec<u8> {
                <Self as ::alloy_sol_types::SolType>::abi_encode_packed(&self.0)
            }
        }

        #[automatically_derived]
        impl ::alloy_sol_types::SolType for #name {
            type RustType = #underlying_rust;
            type Token<'a> = <#underlying_sol as ::alloy_sol_types::SolType>::Token<'a>;

            const ENCODED_SIZE: Option<usize> = <#underlying_sol as ::alloy_sol_types::SolType>::ENCODED_SIZE;

            #[inline]
            fn sol_type_name() -> ::alloy_sol_types::private::Cow<'static, str> {
                Self::NAME.into()
            }

            #[inline]
            fn valid_token(token: &Self::Token<'_>) -> bool {
                Self::type_check(token).is_ok()
            }

            #[inline]
            fn type_check(token: &Self::Token<'_>) -> ::alloy_sol_types::Result<()> {
                #type_check_body
            }

            #[inline]
            fn detokenize(token: Self::Token<'_>) -> Self::RustType {
                <#underlying_sol as ::alloy_sol_types::SolType>::detokenize(token)
            }
        }

        #[automatically_derived]
        impl ::alloy_sol_types::EventTopic for #name {
            #[inline]
            fn topic_preimage_length(rust: &Self::RustType) -> usize {
                <#underlying_sol as ::alloy_sol_types::EventTopic>::topic_preimage_length(rust)
            }

            #[inline]
            fn encode_topic_preimage(rust: &Self::RustType, out: &mut ::alloy_sol_types::private::Vec<u8>) {
                <#underlying_sol as ::alloy_sol_types::EventTopic>::encode_topic_preimage(rust, out)
            }

            #[inline]
            fn encode_topic(rust: &Self::RustType) -> ::alloy_sol_types::abi::token::WordToken {
                <#underlying_sol as ::alloy_sol_types::EventTopic>::encode_topic(rust)
            }
        }
    };
    Ok(tokens)
}