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use proc_macro2::TokenStream;
use quote::{quote, ToTokens};
use super::context::{Context, ContextData};
pub(crate) struct MockableDefault {
pub context: Context,
}
impl MockableDefault {
pub(crate) fn new(context: Context) -> Self {
Self { context }
}
}
impl ToTokens for MockableDefault {
fn to_tokens(&self, tokens: &mut TokenStream) {
let Self { context } = self;
let ContextData {
extern_mock_lifetime,
..
} = &**context;
if *extern_mock_lifetime {
tokens.extend(quote! {
/// Helper trait that is used to generate a default mock object
/// from it's mocked type.
pub trait MockableDefault<'mock>: Mockable<'mock> {
/// Returns a new empty mock object.
fn mock() -> Self::Mock;
/// Returns a new empty handle and a mocked object.
fn mock_with_handle() -> (Self::Handle, Self::Mock);
}
impl<'mock, X> MockableDefault<'mock> for X
where
X: Mockable<'mock> + Default,
{
fn mock() -> Self::Mock {
Self::default().into_mock()
}
fn mock_with_handle() -> (Self::Handle, Self::Mock) {
Self::default().into_mock_with_handle()
}
}
});
} else {
tokens.extend(quote! {
/// Helper trait that is used to generate a default mock object
/// from it's mocked type.
pub trait MockableDefault: Mockable {
/// Returns a new empty mock object.
fn mock<'mock>() -> Self::Mock<'mock>;
/// Returns a new empty handle and a mocked object.
fn mock_with_handle<'mock>() -> (Self::Handle<'mock>, Self::Mock<'mock>);
}
impl<X> MockableDefault for X
where
X: Mockable + Default,
{
fn mock<'mock>() -> Self::Mock<'mock> {
Self::default().into_mock()
}
fn mock_with_handle<'mock>() -> (Self::Handle<'mock>, Self::Mock<'mock>) {
Self::default().into_mock_with_handle()
}
}
});
}
}
}