mirror of https://github.com/astral-sh/ruff
16 lines
453 B
Rust
16 lines
453 B
Rust
/// Returns `true` if a string is a valid Python identifier (e.g., variable
|
|
/// name).
|
|
pub fn is_identifier(s: &str) -> bool {
|
|
// Is the first character a letter or underscore?
|
|
if !s
|
|
.chars()
|
|
.next()
|
|
.map_or(false, |c| c.is_alphabetic() || c == '_')
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Are the rest of the characters letters, digits, or underscores?
|
|
s.chars().skip(1).all(|c| c.is_alphanumeric() || c == '_')
|
|
}
|