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update parser

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closes #69

this doesn't change functionality per se but improves diagnostics in some cases. Some hard errors
have becomes warnings, for example: when `resources` is empty, or when `idle.path` is set to the
default `idle` path.
This commit is contained in:
Jorge Aparicio 2018-04-08 18:23:27 +02:00
parent b55581dfe3
commit 7fdf16eab9
13 changed files with 61 additions and 139 deletions
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21
macros/src/lib.rs
View file

@ -1,19 +1,19 @@
//! Procedural macros of the `cortex-m-rtfm` crate
#![deny(warnings)]
// #![deny(warnings)]
#![feature(proc_macro)]
#![recursion_limit = "128"]
#[macro_use]
extern crate error_chain;
extern crate failure;
extern crate proc_macro;
extern crate proc_macro2;
extern crate syn;
#[macro_use]
extern crate quote;
extern crate rtfm_syntax as syntax;
extern crate syn;
use proc_macro::TokenStream;
use syntax::App;
use syntax::error::*;
use syntax::{App, Result};
mod analyze;
mod check;
@ -170,22 +170,17 @@ mod trans;
#[proc_macro]
pub fn app(ts: TokenStream) -> TokenStream {
match run(ts) {
Err(e) => panic!("{}", error_chain::ChainedError::display(&e)),
Err(e) => panic!("error: {}", e),
Ok(ts) => ts,
}
}
fn run(ts: TokenStream) -> Result<TokenStream> {
let input = format!("{}", ts);
let app = App::parse(&input).chain_err(|| "parsing")?;
let app = syntax::check::app(app).chain_err(|| "checking the AST")?;
let app = App::parse(ts)?.check()?;
let app = check::app(app)?;
let ownerships = analyze::app(&app);
let tokens = trans::app(&app, &ownerships);
Ok(format!("{}", tokens)
.parse()
.map_err(|_| "BUG: error parsing the generated code")?)
Ok(tokens.into())
}