src/librustc_metadata/lib.rs

   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)]
   8 #![feature(libc)]
   9 #![feature(nll)]
  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"]
  17
  18 extern crate libc;
  19 extern crate proc_macro;
  20
  21 #[macro_use]
  22 extern crate rustc;
  23 #[macro_use]
  24 extern crate rustc_data_structures;
  25
  26 pub use rmeta::{provide, provide_extern};
  27
  28 mod dependency_format;
  29 mod foreign_modules;
  30 mod link_args;
  31 mod native_libs;
  32 mod rmeta;
  33
  34 pub mod creader;
  35 pub mod dynamic_lib;
  36 pub mod locator;
  37
  38 pub fn validate_crate_name(
  39     sess: Option<&rustc::session::Session>,
  40     s: &str,
  41     sp: Option<rustc_span::Span>,
  42 ) {
  43     let mut err_count = 0;
  44     {
  45         let mut say = |s: &str| {
  46             match (sp, sess) {
  47                 (_, None) => bug!("{}", s),
  48                 (Some(sp), Some(sess)) => sess.span_err(sp, s),
  49                 (None, Some(sess)) => sess.err(s),
  50             }
  51             err_count += 1;
  52         };
  53         if s.is_empty() {
  54             say("crate name must not be empty");
  55         }
  56         for c in s.chars() {
  57             if c.is_alphanumeric() {
  58                 continue;
  59             }
  60             if c == '_' {
  61                 continue;
  62             }
  63             say(&format!("invalid character `{}` in crate name: `{}`", c, s));
  64         }
  65     }
  66
  67     if err_count > 0 {
  68         sess.unwrap().abort_if_errors();
  69     }
  70 }