Method has_subexprs

regex/regex-syntax/src/ast/mod.rs:529–542

Returns true if and only if this AST has any (including possibly empty) subexpressions.

(&self)

    /// Returns true if and only if this AST has any (including possibly empty)
    /// subexpressions.
    fn has_subexprs(&self) -> bool {
        match *self {
            Ast::Empty(_)
            | Ast::Flags(_)
            | Ast::Literal(_)
            | Ast::Dot(_)
            | Ast::Assertion(_) => false,
            Ast::Class(_)
            | Ast::Repetition(_)
            | Ast::Group(_)
            | Ast::Alternation(_)
            | Ast::Concat(_) => true,
        }
    }
}

/// Print a display representation of this Ast.