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#[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();
}
}