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
|
use proc_macro2::TokenStream as TokenStream2;
use quote::quote;
use rtfm_syntax::{ast::App, Context};
use crate::{analyze::Analysis, codegen::util};
pub fn codegen(
ctxt: Context,
priority: u8,
needs_lt: &mut bool,
app: &App,
analysis: &Analysis,
) -> (TokenStream2, TokenStream2) {
let mut lt = None;
let resources = match ctxt {
Context::Init(core) => &app.inits[&core].args.resources,
Context::Idle(core) => &app.idles[&core].args.resources,
Context::HardwareTask(name) => &app.hardware_tasks[name].args.resources,
Context::SoftwareTask(name) => &app.software_tasks[name].args.resources,
};
let mut fields = vec![];
let mut values = vec![];
let mut has_cfgs = false;
for name in resources {
let (res, expr) = app.resource(name).expect("UNREACHABLE");
let cfgs = &res.cfgs;
has_cfgs |= !cfgs.is_empty();
let mut_ = res.mutability;
let ty = &res.ty;
if ctxt.is_init() {
if !analysis.ownerships.contains_key(name) {
// owned by `init`
fields.push(quote!(
#(#cfgs)*
pub #name: &'static #mut_ #ty
));
values.push(quote!(
#(#cfgs)*
#name: &#mut_ #name
));
} else {
// owned by someone else
lt = Some(quote!('a));
fields.push(quote!(
#(#cfgs)*
pub #name: &'a mut #ty
));
values.push(quote!(
#(#cfgs)*
#name: &mut #name
));
}
} else {
let ownership = &analysis.ownerships[name];
if ownership.needs_lock(priority) {
if mut_.is_none() {
lt = Some(quote!('a));
fields.push(quote!(
#(#cfgs)*
pub #name: &'a #ty
));
} else {
// resource proxy
lt = Some(quote!('a));
fields.push(quote!(
#(#cfgs)*
pub #name: resources::#name<'a>
));
values.push(quote!(
#(#cfgs)*
#name: resources::#name::new(priority)
));
continue;
}
} else {
let lt = if ctxt.runs_once() {
quote!('static)
} else {
lt = Some(quote!('a));
quote!('a)
};
if ownership.is_owned() || mut_.is_none() {
fields.push(quote!(
#(#cfgs)*
pub #name: &#lt #mut_ #ty
));
} else {
fields.push(quote!(
#(#cfgs)*
pub #name: &#lt mut #ty
));
}
}
let is_late = expr.is_none();
if is_late {
let expr = if mut_.is_some() {
quote!(&mut *#name.as_mut_ptr())
} else {
quote!(&*#name.as_ptr())
};
values.push(quote!(
#(#cfgs)*
#name: #expr
));
} else {
values.push(quote!(
#(#cfgs)*
#name: &#mut_ #name
));
}
}
}
if lt.is_some() {
*needs_lt = true;
// the struct could end up empty due to `cfg`s leading to an error due to `'a` being unused
if has_cfgs {
fields.push(quote!(
#[doc(hidden)]
pub __marker__: core::marker::PhantomData<&'a ()>
));
values.push(quote!(__marker__: core::marker::PhantomData))
}
}
let core = ctxt.core(app);
let cores = app.args.cores;
let cfg_core = util::cfg_core(core, cores);
let doc = format!("Resources `{}` has access to", ctxt.ident(app));
let ident = util::resources_ident(ctxt, app);
let item = quote!(
#cfg_core
#[allow(non_snake_case)]
#[doc = #doc]
pub struct #ident<#lt> {
#(#fields,)*
}
);
let arg = if ctxt.is_init() {
None
} else {
Some(quote!(priority: &#lt rtfm::export::Priority))
};
let constructor = quote!(
#cfg_core
impl<#lt> #ident<#lt> {
#[inline(always)]
unsafe fn new(#arg) -> Self {
#ident {
#(#values,)*
}
}
}
);
(item, constructor)
}
|
