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