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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
// SPDX-FileCopyrightText: 2025 The vita49-rs Authors
//
// SPDX-License-Identifier: MIT OR Apache-2.0
use proc_macro2::TokenStream;
use quote::{format_ident, quote};
use syn::parse::{Parse, ParseStream};
use syn::{parse2, Ident, LitInt, Token};
struct AckFieldArgs {
cif_num_literal: LitInt,
_comma0: Token![,],
ack_field: Ident,
}
impl Parse for AckFieldArgs {
fn parse(input: ParseStream) -> syn::Result<Self> {
let cif_num_literal = input.parse()?;
let _comma0: Token![,] = input.parse()?;
let ack_field = input.parse()?;
Ok(AckFieldArgs {
cif_num_literal,
_comma0,
ack_field,
})
}
}
pub fn ack_field(input: TokenStream) -> TokenStream {
let AckFieldArgs {
cif_num_literal,
ack_field,
..
} = parse2(input).expect("failed to parse macro input");
let set_ack_field_fn = format_ident!("set_{}", ack_field);
let unset_ack_field_fn = format_ident!("unset_{}", ack_field);
let get_doc = format!(
"Get the {ack_field} ACK level and ACK response. If `None` is returned, the field is unset."
);
let set_doc = format!(
"Set the {ack_field} ACK level and ACK response. If `None` is passed, the field will be unset.\n\n\
[`update_packet_size()`](Vrt::update_packet_size()) should be executed after running this method."
);
let cif_num = cif_num_literal.base10_parse::<u8>().unwrap();
if cif_num == 0 {
quote! {
#[doc = #get_doc]
fn #ack_field(&self) -> Option<(AckLevel, AckResponse)> {
if let Some(fields) = self.eif0_fields() {
if let Some(response) = fields.#ack_field {
return Some((AckLevel::Error, response));
}
}
if let Some(fields) = self.wif0_fields() {
if let Some(response) = fields.#ack_field {
return Some((AckLevel::Warning, response));
}
}
None
}
#[doc = #set_doc]
fn #set_ack_field_fn(&mut self, level: AckLevel, response: Option<AckResponse>) {
match level {
AckLevel::Warning => {
if let Some(r) = response {
if self.wif0().is_none() {
*self.wif0_mut() = Some(Cif0::default());
}
self.wif0_mut().as_mut().unwrap().#set_ack_field_fn();
if self.wif0_fields().is_none() {
*self.wif0_fields_mut() = Some(Cif0AckFields::default());
}
self.wif0_fields_mut().as_mut().unwrap().#ack_field = Some(r);
} else {
let mut clear_wif = false;
let mut clear_wif_fields = false;
if let Some(w) = self.wif0_mut() {
w.#unset_ack_field_fn();
if w.empty() {
clear_wif = true;
}
}
if let Some(f) = self.wif0_fields_mut() {
f.#ack_field = None;
if f.empty() {
clear_wif_fields = true;
}
}
if clear_wif {
*self.wif0_mut() = None;
}
if clear_wif_fields {
*self.wif0_fields_mut() = None;
}
}
},
AckLevel::Error => {
if let Some(r) = response {
if self.eif0().is_none() {
*self.eif0_mut() = Some(Cif0::default());
}
self.eif0_mut().as_mut().unwrap().#set_ack_field_fn();
if self.eif0_fields().is_none() {
*self.eif0_fields_mut() = Some(Cif0AckFields::default());
}
self.eif0_fields_mut().as_mut().unwrap().#ack_field = Some(r);
} else {
let mut clear_wif = false;
let mut clear_wif_fields = false;
if let Some(w) = self.eif0_mut() {
w.#unset_ack_field_fn();
if w.empty() {
clear_wif = true;
}
}
if let Some(f) = self.eif0_fields_mut() {
f.#ack_field = None;
if f.empty() {
clear_wif_fields = true;
}
}
if clear_wif {
*self.eif0_mut() = None;
}
if clear_wif_fields {
*self.eif0_fields_mut() = None;
}
}
}
};
}
}
} else {
let cif = format_ident!("Cif{}", cif_num);
let cif_ack_fields = format_ident!("Cif{}AckFields", cif_num);
let set_cif_enabled_fn = format_ident!("set_cif{}_enabled", cif_num);
let unset_cif_enabled_fn = format_ident!("unset_cif{}_enabled", cif_num);
let wif = format_ident!("wif{}", cif_num);
let wif_mut = format_ident!("wif{}_mut", cif_num);
let wif_fields = format_ident!("wif{}_fields", cif_num);
let wif_fields_mut = format_ident!("wif{}_fields_mut", cif_num);
let eif = format_ident!("eif{}", cif_num);
let eif_mut = format_ident!("eif{}_mut", cif_num);
let eif_fields = format_ident!("eif{}_fields", cif_num);
let eif_fields_mut = format_ident!("eif{}_fields_mut", cif_num);
quote! {
#[doc = #get_doc]
fn #ack_field(&self) -> Option<(AckLevel, AckResponse)> {
if let Some(fields) = self.#eif_fields() {
if let Some(response) = fields.#ack_field {
return Some((AckLevel::Error, response));
}
}
if let Some(fields) = self.#wif_fields() {
if let Some(response) = fields.#ack_field {
return Some((AckLevel::Warning, response));
}
}
None
}
#[doc = #set_doc]
fn #set_ack_field_fn(&mut self, level: AckLevel, response: Option<AckResponse>) {
match level {
AckLevel::Warning => {
if let Some(r) = response {
if self.#wif().is_none() {
*self.#wif_mut() = Some(#cif::default());
if self.wif0().is_none() {
*self.wif0_mut() = Some(Cif0::default());
self.wif0_mut().unwrap().#set_cif_enabled_fn();
}
}
self.#wif_mut().unwrap().#set_ack_field_fn();
if self.#wif_fields().is_none() {
*self.#wif_fields_mut() = Some(#cif_ack_fields::default());
}
self.#wif_fields_mut().as_mut().unwrap().#ack_field = Some(r);
} else {
let mut clear_wif = false;
if let Some(f) = self.#wif_fields_mut() {
f.#ack_field = None;
}
if let Some(w) = self.#wif_mut() {
w.#unset_ack_field_fn();
if w.empty() {
clear_wif = true;
}
}
if clear_wif {
*self.#wif_mut() = None;
*self.#wif_fields_mut() = None;
if let Some(w) = self.wif0_mut() {
w.#unset_cif_enabled_fn();
}
}
}
},
AckLevel::Error => {
if let Some(r) = response {
if self.#eif().is_none() {
*self.#eif_mut() = Some(#cif::default());
if self.eif0().is_none() {
*self.eif0_mut() = Some(Cif0::default());
self.eif0_mut().unwrap().#set_cif_enabled_fn();
}
}
self.#eif_mut().unwrap().#set_ack_field_fn();
if self.#eif_fields().is_none() {
*self.#eif_fields_mut() = Some(#cif_ack_fields::default());
}
self.#eif_fields_mut().as_mut().unwrap().#ack_field = Some(r);
} else {
let mut clear_eif = false;
if let Some(f) = self.#eif_fields_mut() {
f.#ack_field = None;
}
if let Some(w) = self.#eif_mut() {
w.#unset_ack_field_fn();
if w.empty() {
clear_eif = true;
}
}
if clear_eif {
*self.#eif_mut() = None;
*self.#eif_fields_mut() = None;
if let Some(w) = self.eif0_mut() {
w.#unset_cif_enabled_fn();
}
}
}
}
};
}
}
}
}