Interface CharOps

core/src/lexer.rs:200–212

Extra operations to test properties of a `char` based on the language semantics.

/// Extra operations to test properties of a `char` based on the language semantics.
trait CharOps {
    /// Returns true if the current character should be considered as finishing a previous token.
    fn is_separator(&self) -> bool;

    /// Returns true if the character is a space.
    ///
    /// Use this instead of `is_whitespace`, which accounts for newlines but we need to handle
    /// those explicitly.
    fn is_space(&self) -> bool;

    /// Returns true if the character can be part of an identifier.
    fn is_word(&self) -> bool;
}

impl CharOps for char {
    fn is_separator(&self) -> bool {