diff options
Diffstat (limited to 'compiler/rustc_session/src/utils.rs')
| -rw-r--r-- | compiler/rustc_session/src/utils.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/utils.rs b/compiler/rustc_session/src/utils.rs index f76c69af526..aea7c6c2842 100644 --- a/compiler/rustc_session/src/utils.rs +++ b/compiler/rustc_session/src/utils.rs @@ -158,3 +158,12 @@ pub fn extra_compiler_flags() -> Option<(Vec<String>, bool)> { if !result.is_empty() { Some((result, excluded_cargo_defaults)) } else { None } } + +pub(crate) fn is_ascii_ident(string: &str) -> bool { + let mut chars = string.chars(); + if let Some(start) = chars.next() && (start.is_ascii_alphabetic() || start == '_') { + chars.all(|char| char.is_ascii_alphanumeric() || char == '_') + } else { + false + } +} |