rust/compiler/rustc_builtin_macros/src/cmdline_attrs.rs
Nicholas Nethercote 80d2bdb619 Rename all ParseSess variables/fields/lifetimes as psess.
Existing names for values of this type are `sess`, `parse_sess`,
`parse_session`, and `ps`. `sess` is particularly annoying because
that's also used for `Session` values, which are often co-located, and
it can be difficult to know which type a value named `sess` refers to.
(That annoyance is the main motivation for this change.) `psess` is nice
and short, which is good for a name used this much.

The commit also renames some `parse_sess_created` values as
`psess_created`.
2024-03-05 08:11:45 +11:00

40 lines
1.2 KiB
Rust

//! Attributes injected into the crate root from command line using `-Z crate-attr`.
use crate::errors;
use rustc_ast::attr::mk_attr;
use rustc_ast::token;
use rustc_ast::{self as ast, AttrItem, AttrStyle};
use rustc_session::parse::ParseSess;
use rustc_span::FileName;
pub fn inject(krate: &mut ast::Crate, psess: &ParseSess, attrs: &[String]) {
for raw_attr in attrs {
let mut parser = rustc_parse::new_parser_from_source_str(
psess,
FileName::cli_crate_attr_source_code(raw_attr),
raw_attr.clone(),
);
let start_span = parser.token.span;
let AttrItem { path, args, tokens: _ } = match parser.parse_attr_item(false) {
Ok(ai) => ai,
Err(err) => {
err.emit();
continue;
}
};
let end_span = parser.token.span;
if parser.token != token::Eof {
psess.dcx.emit_err(errors::InvalidCrateAttr { span: start_span.to(end_span) });
continue;
}
krate.attrs.push(mk_attr(
&psess.attr_id_generator,
AttrStyle::Inner,
path,
args,
start_span.to(end_span),
));
}
}