src/librustc_metadata/lib.rs

   1 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   2
   3 #![feature(box_patterns)]
   4 #![feature(crate_visibility_modifier)]
   5 #![feature(drain_filter)]
   6 #![feature(in_band_lifetimes)]
   7 #![feature(libc)]
   8 #![feature(nll)]
   9 #![feature(proc_macro_internals)]
  10 #![feature(proc_macro_quote)]
  11 #![feature(rustc_diagnostic_macros)]
  12 #![feature(rustc_private)]
  13 #![feature(slice_patterns)]
  14 #![feature(specialization)]
  15
  16 #![recursion_limit="256"]
  17
  18 #![deny(rust_2018_idioms)]
  19 #![deny(unused_lifetimes)]
  20
  21 extern crate libc;
  22 extern crate proc_macro;
  23
  24 #[macro_use]
  25 extern crate rustc;
  26 #[macro_use]
  27 extern crate rustc_data_structures;
  28
  29 mod error_codes;
  30
  31 mod index;
  32 mod encoder;
  33 mod decoder;
  34 mod cstore_impl;
  35 mod schema;
  36 mod native_libs;
  37 mod link_args;
  38 mod foreign_modules;
  39
  40 pub mod creader;
  41 pub mod cstore;
  42 pub mod dynamic_lib;
  43 pub mod locator;
  44
  45 pub fn validate_crate_name(
  46     sess: Option<&rustc::session::Session>,
  47     s: &str,
  48     sp: Option<syntax_pos::Span>
  49 ) {
  50     let mut err_count = 0;
  51     {
  52         let mut say = |s: &str| {
  53             match (sp, sess) {
  54                 (_, None) => bug!("{}", s),
  55                 (Some(sp), Some(sess)) => sess.span_err(sp, s),
  56                 (None, Some(sess)) => sess.err(s),
  57             }
  58             err_count += 1;
  59         };
  60         if s.is_empty() {
  61             say("crate name must not be empty");
  62         }
  63         for c in s.chars() {
  64             if c.is_alphanumeric() { continue }
  65             if c == '_'  { continue }
  66             say(&format!("invalid character `{}` in crate name: `{}`", c, s));
  67         }
  68     }
  69
  70     if err_count > 0 {
  71         sess.unwrap().abort_if_errors();
  72     }
  73 }
  74
  75 __build_diagnostic_array! { librustc_metadata, DIAGNOSTICS }