src/librustc_metadata/lib.rs

   1 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   2
   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)]
   9 #![feature(libc)]
  10 #![feature(nll)]
  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)]
  17
  18 #![recursion_limit="256"]
  19
  20 extern crate libc;
  21 extern crate proc_macro;
  22
  23 #[macro_use]
  24 extern crate rustc;
  25 #[macro_use]
  26 extern crate rustc_data_structures;
  27
  28 pub use rmeta::{provide, provide_extern};
  29
  30 mod dependency_format;
  31 mod foreign_modules;
  32 mod link_args;
  33 mod native_libs;
  34 mod rmeta;
  35
  36 pub mod creader;
  37 pub mod dynamic_lib;
  38 pub mod locator;
  39
  40 pub fn validate_crate_name(
  41     sess: Option<&rustc::session::Session>,
  42     s: &str,
  43     sp: Option<syntax_pos::Span>
  44 ) {
  45     let mut err_count = 0;
  46     {
  47         let mut say = |s: &str| {
  48             match (sp, sess) {
  49                 (_, None) => bug!("{}", s),
  50                 (Some(sp), Some(sess)) => sess.span_err(sp, s),
  51                 (None, Some(sess)) => sess.err(s),
  52             }
  53             err_count += 1;
  54         };
  55         if s.is_empty() {
  56             say("crate name must not be empty");
  57         }
  58         for c in s.chars() {
  59             if c.is_alphanumeric() { continue }
  60             if c == '_'  { continue }
  61             say(&format!("invalid character `{}` in crate name: `{}`", c, s));
  62         }
  63     }
  64
  65     if err_count > 0 {
  66         sess.unwrap().abort_if_errors();
  67     }
  68 }