Method is_fallible_constructor

crates/cpp/src/lib.rs:305–314

Returns true if the function is a fallible constructor. Fallible constructors are constructors that return `result ` instead of just `T`. In the generated C++ code, these become static factory methods named `Create` that return `std::expected `, rather than regular constructors.

(&self, resolve: &Resolve, func: &Function)

    /// In the generated C++ code, these become static factory methods named `Create` that
    /// return `std::expected<T, E>`, rather than regular constructors.
    fn is_fallible_constructor(&self, resolve: &Resolve, func: &Function) -> bool {
        matches!(&func.kind, FunctionKind::Constructor(_))
            && func.result.as_ref().is_some_and(|ty| {
                if let Type::Id(id) = ty {
                    matches!(&resolve.types[*id].kind, TypeDefKind::Result(_))
                } else {
                    false
                }
            })
    }

    fn interface<'a>(
        &'a mut self,