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(specialization)]
  14 #![feature(stmt_expr_attributes)]
  15 #![recursion_limit = "256"]
  16
  17 extern crate libc;
  18 extern crate proc_macro;
  19
  20 #[macro_use]
  21 extern crate rustc;
  22 #[macro_use]
  23 extern crate rustc_data_structures;
  24
  25 pub use rmeta::{provide, provide_extern};
  26
  27 mod dependency_format;
  28 mod foreign_modules;
  29 mod link_args;
  30 mod native_libs;
  31 mod rmeta;
  32
  33 pub mod creader;
  34 pub mod dynamic_lib;
  35 pub mod locator;
  36
  37 pub fn validate_crate_name(
  38     sess: Option<&rustc::session::Session>,
  39     s: &str,
  40     sp: Option<rustc_span::Span>,
  41 ) {
  42     let mut err_count = 0;
  43     {
  44         let mut say = |s: &str| {
  45             match (sp, sess) {
  46                 (_, None) => bug!("{}", s),
  47                 (Some(sp), Some(sess)) => sess.span_err(sp, s),
  48                 (None, Some(sess)) => sess.err(s),
  49             }
  50             err_count += 1;
  51         };
  52         if s.is_empty() {
  53             say("crate name must not be empty");
  54         }
  55         for c in s.chars() {
  56             if c.is_alphanumeric() {
  57                 continue;
  58             }
  59             if c == '_' {
  60                 continue;
  61             }
  62             say(&format!("invalid character `{}` in crate name: `{}`", c, s));
  63         }
  64     }
  65
  66     if err_count > 0 {
  67         sess.unwrap().abort_if_errors();
  68     }
  69 }