es-entity-macros 0.10.36

Proc macros for es-entity
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
135
136

use darling::ToTokens;
use proc_macro2::TokenStream;
use quote::{TokenStreamExt, quote};

use super::RepositoryOptions;
use super::options::PostPersistHookConfig;

pub struct PostPersistHook<'a> {
    event: &'a syn::Ident,
    entity: &'a syn::Ident,
    hook: &'a Option<PostPersistHookConfig>,
}

impl<'a> From<&'a RepositoryOptions> for PostPersistHook<'a> {
    fn from(opts: &'a RepositoryOptions) -> Self {
        Self {
            event: opts.event(),
            entity: opts.entity(),
            hook: &opts.post_persist_hook,
        }
    }
}

impl ToTokens for PostPersistHook<'_> {
    fn to_tokens(&self, tokens: &mut TokenStream) {
        let event = &self.event;
        let entity = &self.entity;

        let (error_ty, hook) = if let Some(config) = self.hook {
            let method = &config.method;
            let error = &config.error;
            (
                quote! { #error },
                quote! {
                    self.#method(op, entity, new_events).await?;
                    Ok(())
                },
            )
        } else {
            (
                quote! { sqlx::Error },
                quote! {
                    Ok(())
                },
            )
        };

        tokens.append_all(quote! {
            #[inline(always)]
            async fn execute_post_persist_hook<OP>(
                &self,
                op: &mut OP,
                entity: &#entity,
                new_events: es_entity::LastPersisted<'_, #event>
            ) -> Result<(), #error_ty>
                where
                    OP: es_entity::AtomicOperation
            {
                #hook
            }
        });
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn post_persist_hook_none() {
        let event = syn::Ident::new("EntityEvent", proc_macro2::Span::call_site());
        let entity = syn::Ident::new("Entity", proc_macro2::Span::call_site());
        let hook = None;

        let hook = PostPersistHook {
            event: &event,
            entity: &entity,
            hook: &hook,
        };

        let mut tokens = TokenStream::new();
        hook.to_tokens(&mut tokens);

        let expected = quote! {
            #[inline(always)]
            async fn execute_post_persist_hook<OP>(&self,
                op: &mut OP,
                entity: &Entity,
                new_events: es_entity::LastPersisted<'_, EntityEvent>
            ) -> Result<(), sqlx::Error>
                where
                    OP: es_entity::AtomicOperation
            {
                Ok(())
            }
        };

        assert_eq!(tokens.to_string(), expected.to_string());
    }

    #[test]
    fn post_persist_hook_some() {
        let event = syn::Ident::new("EntityEvent", proc_macro2::Span::call_site());
        let entity = syn::Ident::new("Entity", proc_macro2::Span::call_site());
        let config = Some(PostPersistHookConfig {
            method: syn::Ident::new("on_persist", proc_macro2::Span::call_site()),
            error: syn::parse_str("MyPersistError").unwrap(),
        });

        let hook = PostPersistHook {
            event: &event,
            entity: &entity,
            hook: &config,
        };

        let mut tokens = TokenStream::new();
        hook.to_tokens(&mut tokens);

        let expected = quote! {
            #[inline(always)]
            async fn execute_post_persist_hook<OP>(&self,
                op: &mut OP,
                entity: &Entity,
                new_events: es_entity::LastPersisted<'_, EntityEvent>
            ) -> Result<(), MyPersistError>
                where
                    OP: es_entity::AtomicOperation
            {
                self.on_persist(op, entity, new_events).await?;
                Ok(())
            }
        };

        assert_eq!(tokens.to_string(), expected.to_string());
    }
}