bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

ast: Keep expansion status for out-of-line module items

Browse source 
Also remove `ast::Mod` which is mostly redundant now
This commit is contained in:
Vadim Petrochenkov 2021-02-17 00:56:07 +03:00
parent eb65f15c78
commit 4a88165124
14 changed files with 147 additions and 125 deletions
Download patch file Download diff file Expand all files Collapse all files

23
compiler/rustc_expand/src/module.rs
View file

@ -1,4 +1,5 @@
use rustc_ast::{token, Attribute, Mod, Unsafe};
use rustc_ast::ptr::P;
use rustc_ast::{token, Attribute, Item};
use rustc_errors::{struct_span_err, PResult};
use rustc_parse::new_parser_from_file;
use rustc_session::parse::ParseSess;
@ -42,11 +43,10 @@ crate fn parse_external_mod(
sess: &Session,
id: Ident,
span: Span, // The span to blame on errors.
unsafety: Unsafe,
Directory { mut ownership, path }: Directory,
attrs: &mut Vec<Attribute>,
pop_mod_stack: &mut bool,
) -> (Mod, Directory) {
) -> (Vec<P<Item>>, Span, Directory) {
// We bail on the first error, but that error does not cause a fatal error... (1)
let result: PResult<'_, _> = try {
// Extract the file path and the new ownership.
@ -62,25 +62,22 @@ crate fn parse_external_mod(
// Actually parse the external file as a module.
let mut parser = new_parser_from_file(&sess.parse_sess, &mp.path, Some(span));
let (inner_attrs, items, inner) = parser.parse_mod(&token::Eof)?;
(Mod { unsafety, inline: false, items, inner }, inner_attrs)
let (mut inner_attrs, items, inner_span) = parser.parse_mod(&token::Eof)?;
attrs.append(&mut inner_attrs);
(items, inner_span)
};
// (1) ...instead, we return a dummy module.
let (module, mut new_attrs) = result.map_err(|mut err| err.emit()).unwrap_or_else(|_| {
let module = Mod { inner: Span::default(), unsafety, items: Vec::new(), inline: false };
(module, Vec::new())
});
attrs.append(&mut new_attrs);
let (items, inner_span) = result.map_err(|mut err| err.emit()).unwrap_or_default();
// Extract the directory path for submodules of `module`.
let path = sess.source_map().span_to_unmapped_path(module.inner);
// Extract the directory path for submodules of the module.
let path = sess.source_map().span_to_unmapped_path(inner_span);
let mut path = match path {
FileName::Real(name) => name.into_local_path(),
other => PathBuf::from(other.to_string()),
};
path.pop();
(module, Directory { ownership, path })
(items, inner_span, Directory { ownership, path })
}
fn error_on_circular_module<'a>(