| // Copyright 2018 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #[macro_use] |
| extern crate rustc; |
| extern crate syntax_pos; |
| |
| use rustc::session::Session; |
| use syntax_pos::Span; |
| |
| pub fn validate_crate_name(sess: Option<&Session>, s: &str, sp: Option<Span>) { |
| let mut err_count = 0; |
| { |
| let mut say = |s: &str| { |
| match (sp, sess) { |
| (_, None) => bug!("{}", s), |
| (Some(sp), Some(sess)) => sess.span_err(sp, s), |
| (None, Some(sess)) => sess.err(s), |
| } |
| err_count += 1; |
| }; |
| if s.is_empty() { |
| say("crate name must not be empty"); |
| } |
| for c in s.chars() { |
| if c.is_alphanumeric() { continue } |
| if c == '_' { continue } |
| say(&format!("invalid character `{}` in crate name: `{}`", c, s)); |
| } |
| } |
| |
| if err_count > 0 { |
| sess.unwrap().abort_if_errors(); |
| } |
| } |