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use std::collections::HashMap;
use syn::{Ident, Path};
use syntax::check::{self, Idle, Init};
use syntax::{self, Idents, Statics};
use syntax::error::*;
pub struct App {
pub device: Path,
pub idle: Idle,
pub init: Init,
pub resources: Statics,
pub tasks: Tasks,
}
pub type Tasks = HashMap<Ident, Task>;
pub struct Task {
pub enabled: Option<bool>,
pub priority: u8,
pub resources: Idents,
}
pub fn app(app: check::App) -> Result<App> {
let app = App {
device: app.device,
idle: app.idle,
init: app.init,
resources: app.resources,
tasks: app.tasks
.into_iter()
.map(|(k, v)| {
let name = k.clone();
Ok((
k,
::check::task(v)
.chain_err(|| format!("checking task `{}`", name))?,
))
})
.collect::<Result<_>>()
.chain_err(|| "checking `tasks`")?,
};
::check::resources(&app)
.chain_err(|| "checking `resources`")?;
Ok(app)
}
fn resources(app: &App) -> Result<()> {
for resource in app.resources.keys() {
if app.idle.resources.contains(resource) {
continue;
}
if app.tasks
.values()
.any(|task| task.resources.contains(resource))
{
continue;
}
bail!("resource `{}` is unused", resource);
}
Ok(())
}
fn task(task: syntax::check::Task) -> Result<Task> {
if let Some(priority) = task.priority {
Ok(Task {
enabled: task.enabled,
priority,
resources: task.resources,
})
} else {
bail!("should contain a `priority` field")
}
}
|
