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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170

extern crate core;
extern crate proc_macro;

use darling::FromDeriveInput;
use quote::quote;
use quote::ToTokens;
use syn::parse_macro_input;
use syn::DeriveInput;

use crate::utils::impl_block::FromItemImpl;
use crate::utils::impl_block::FromItemTrait;

mod args;
mod utils;

#[proc_macro_derive(SimpleObject, attributes(graphql))]
pub fn drive_simple_object(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::SimpleObject::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(ResolvedObject, attributes(graphql))]
pub fn drive_resolved_object(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::ResolvedObject::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(ExpandObject, attributes(graphql))]
pub fn drive_expand_object(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::ExpandObject::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_attribute]
#[allow(non_snake_case)]
pub fn ResolvedObjectFields(
    _attr: proc_macro::TokenStream,
    item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    let mut item = parse_macro_input!(item as syn::ItemImpl);
    let data = args::ResolvedObjectFields::from_item_impl(&mut item);
    let extension = match data {
        Ok(obj) => obj.into_token_stream(),
        Err(err) => err.write_errors(),
    };
    (quote! {
        #item
        #extension
    })
    .into()
}

#[proc_macro_derive(InputObject, attributes(graphql))]
pub fn drive_input_object(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::InputObject::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(Enum, attributes(graphql))]
pub fn drive_enum(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::Enum::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(Scalar, attributes(graphql))]
pub fn drive_scalar(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::Scalar::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(scalar_args) => scalar_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(App, attributes(graphql))]
pub fn drive_app(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::App::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_attribute]
#[allow(non_snake_case)]
pub fn ExpandObjectFields(
    _attr: proc_macro::TokenStream,
    item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    let mut item = parse_macro_input!(item as syn::ItemImpl);
    let data = args::ExpandObjectFields::from_item_impl(&mut item);
    let extension = match data {
        Ok(obj) => obj.into_token_stream(),
        Err(err) => err.write_errors(),
    };
    (quote! {
        #item
        #extension
    })
    .into()
}

#[proc_macro_attribute]
#[allow(non_snake_case)]
pub fn Interface(
    _attr: proc_macro::TokenStream,
    item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    let mut item = parse_macro_input!(item as syn::ItemTrait);
    let data = args::Interface::from_item_trait(&mut item);
    let extension = match data {
        Ok(obj) => obj.into_token_stream(),
        Err(err) => err.write_errors(),
    };
    (quote! {
        #item
        #extension
    })
    .into()
}

#[proc_macro_derive(Union, attributes(graphql))]
pub fn drive_union(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::Union::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(MutationRoot, attributes(graphql))]
pub fn drive_mutation_root(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::MutationRoot::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_derive(Mutation, attributes(graphql))]
pub fn drive_mutation(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    match args::Mutation::from_derive_input(&parse_macro_input!(input as DeriveInput)) {
        Ok(object_args) => object_args.into_token_stream().into(),
        Err(err) => err.write_errors().into(),
    }
}

#[proc_macro_attribute]
#[allow(non_snake_case)]
pub fn MutationFields(
    _attr: proc_macro::TokenStream,
    item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
    let mut item = parse_macro_input!(item as syn::ItemImpl);
    let data = args::MutationFields::from_item_impl(&mut item);
    let extension = match data {
        Ok(obj) => obj.into_token_stream(),
        Err(err) => err.write_errors(),
    };
    (quote! {
        #item
        #extension
    })
    .into()
}