1 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
2 #![feature(bool_to_option)]
3 #![feature(box_patterns)]
4 #![feature(core_intrinsics)]
5 #![feature(crate_visibility_modifier)]
6 #![feature(drain_filter)]
7 #![feature(in_band_lifetimes)]
10 #![feature(proc_macro_internals)]
11 #![feature(proc_macro_quote)]
12 #![feature(rustc_private)]
13 #![feature(slice_patterns)]
14 #![feature(specialization)]
15 #![feature(stmt_expr_attributes)]
16 #![recursion_limit = "256"]
19 extern crate proc_macro;
24 extern crate rustc_data_structures;
26 pub use rmeta::{provide, provide_extern};
28 mod dependency_format;
38 pub fn validate_crate_name(
39 sess: Option<&rustc::session::Session>,
41 sp: Option<syntax_pos::Span>,
43 let mut err_count = 0;
45 let mut say = |s: &str| {
47 (_, None) => bug!("{}", s),
48 (Some(sp), Some(sess)) => sess.span_err(sp, s),
49 (None, Some(sess)) => sess.err(s),
54 say("crate name must not be empty");
57 if c.is_alphanumeric() {
63 say(&format!("invalid character `{}` in crate name: `{}`", c, s));
68 sess.unwrap().abort_if_errors();