Method singleton_type

cranelift/codegen/meta/src/cdsl/typevar.rs:123–130

If the associated typeset has a single type return it. Otherwise return None.

(&self)

    /// If the associated typeset has a single type return it. Otherwise return None.
    pub fn singleton_type(&self) -> Option<ValueType> {
        let type_set = self.get_typeset();
        if type_set.size() == 1 {
            Some(type_set.get_singleton())
        } else {
            None
        }
    }

    /// Get the free type variable controlling this one.
    pub fn free_typevar(&self) -> Option<TypeVar> {