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use proc_macro::TokenStream;
use quote::quote;
/// Entry point for `gen_program!()`.
///
/// Generates the `Next` type alias, `Routable` impl for `ChainProcess`,
/// and delegates to `program_comp_gen!()`, `program_fallback_gen!()`,
/// and `program_final_gen!()`.
pub(crate) fn gen_program_impl(_input: TokenStream) -> TokenStream {
#[cfg(feature = "comp")]
let comp_gen = quote! {
::mingling::macros::program_comp_gen!();
};
#[cfg(not(feature = "comp"))]
let comp_gen = quote! {};
// When pathf is enabled, include the type_using.rs generated by the build
// script so that types from submodules are in scope for gen_program!().
#[cfg(feature = "pathf")]
let pathf_include = quote! {
include!(concat!(env!("OUT_DIR"), "/", env!("CARGO_PKG_NAME"), "/type_using.rs"));
};
#[cfg(not(feature = "pathf"))]
let pathf_include = quote! {};
TokenStream::from(quote! {
/// Alias for the current program type `crate::ThisProgram`
pub type Next = ::mingling::ChainProcess<crate::ThisProgram>;
impl ::mingling::Routable<crate::ThisProgram> for ::mingling::ChainProcess<crate::ThisProgram>
{
fn to_chain(self) -> ::mingling::ChainProcess<crate::ThisProgram> {
match self {
::mingling::ChainProcess::Ok((any, _)) => {
::mingling::ChainProcess::Ok((any, mingling::NextProcess::Chain))
}
other => other,
}
}
fn to_render(self) -> ::mingling::ChainProcess<crate::ThisProgram> {
match self {
::mingling::ChainProcess::Ok((any, _)) => {
::mingling::ChainProcess::Ok((any, mingling::NextProcess::Renderer))
}
other => other,
}
}
}
#pathf_include
#comp_gen
::mingling::macros::program_fallback_gen!();
::mingling::macros::program_final_gen!();
})
}
|
