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use proc_macro2::TokenStream as TokenStream2;
use quote::quote;
use rtic_syntax::{ast::App, Context};
use crate::{
analyze::Analysis,
check::Extra,
codegen::{local_resources_struct, module, shared_resources_struct},
};
/// Generate support code for hardware tasks (`#[exception]`s and `#[interrupt]`s)
pub fn codegen(
app: &App,
analysis: &Analysis,
extra: &Extra,
) -> (
// mod_app_hardware_tasks -- interrupt handlers and `${task}Resources` constructors
Vec<TokenStream2>,
// root_hardware_tasks -- items that must be placed in the root of the crate:
// - `${task}Locals` structs
// - `${task}Resources` structs
// - `${task}` modules
Vec<TokenStream2>,
// user_hardware_tasks -- the `#[task]` functions written by the user
Vec<TokenStream2>,
) {
let mut mod_app = vec![];
let mut root = vec![];
let mut user_tasks = vec![];
for (name, task) in &app.hardware_tasks {
let symbol = task.args.binds.clone();
let priority = task.args.priority;
let cfgs = &task.cfgs;
let attrs = &task.attrs;
let user_hardware_task_isr_doc = &format!(" User HW task ISR trampoline for {name}");
mod_app.push(quote!(
#[allow(non_snake_case)]
#[no_mangle]
#[doc = #user_hardware_task_isr_doc]
#(#attrs)*
#(#cfgs)*
unsafe fn #symbol() {
const PRIORITY: u8 = #priority;
rtic::export::run(PRIORITY, || {
#name(
#name::Context::new(&rtic::export::Priority::new(PRIORITY))
)
});
}
));
let mut shared_needs_lt = false;
let mut local_needs_lt = false;
// `${task}Locals`
if !task.args.local_resources.is_empty() {
let (item, constructor) = local_resources_struct::codegen(
Context::HardwareTask(name),
&mut local_needs_lt,
app,
);
root.push(item);
mod_app.push(constructor);
}
// `${task}Resources`
if !task.args.shared_resources.is_empty() {
let (item, constructor) = shared_resources_struct::codegen(
Context::HardwareTask(name),
&mut shared_needs_lt,
app,
);
root.push(item);
mod_app.push(constructor);
}
root.push(module::codegen(
Context::HardwareTask(name),
shared_needs_lt,
local_needs_lt,
app,
analysis,
extra,
));
let user_hardware_task_doc = &format!(" User HW task: {name}");
if !task.is_extern {
let attrs = &task.attrs;
let context = &task.context;
let stmts = &task.stmts;
user_tasks.push(quote!(
#[doc = #user_hardware_task_doc]
#(#attrs)*
#[allow(non_snake_case)]
fn #name(#context: #name::Context) {
use rtic::Mutex as _;
use rtic::mutex::prelude::*;
#(#stmts)*
}
));
}
}
(mod_app, root, user_tasks)
}
|
