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Shaders: node macro (#2923)

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* node_macro: cleanup attr parsing

* node_macro: add `cfg()` attr to feature gate node impl

* node_macro: add `shader_nodes` option

* node_macro: fixup tests
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Firestar99 2025-07-24 14:58:30 +02:00 • committed by GitHub
parent 2d11d96b4a
commit 59f3835c5d
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7 changed files with 101 additions and 9 deletions
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17
node-graph/node-macro/src/codegen.rs
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@ -345,13 +345,15 @@ pub(crate) fn generate_node_code(parsed: &ParsedNodeFn) -> syn::Result<TokenStre
let properties = &attributes.properties_string.as_ref().map(|value| quote!(Some(#value))).unwrap_or(quote!(None));
let node_input_accessor = generate_node_input_references(parsed, fn_generics, &field_idents, &graphene_core, &identifier);
let cfg = crate::shader_nodes::modify_cfg(&attributes);
let node_input_accessor = generate_node_input_references(parsed, fn_generics, &field_idents, &graphene_core, &identifier, &cfg);
Ok(quote! {
/// Underlying implementation for [#struct_name]
#[inline]
#[allow(clippy::too_many_arguments)]
#vis #async_keyword fn #fn_name <'n, #(#fn_generics,)*> (#input_ident: #input_type #(, #field_idents: #field_types)*) -> #output_type #where_clause #body
#cfg
#[automatically_derived]
impl<'n, #(#fn_generics,)* #(#struct_generics,)* #(#future_idents,)*> #graphene_core::Node<'n, #input_type> for #mod_name::#struct_name<#(#struct_generics,)*>
#struct_where_clause
@ -359,16 +361,19 @@ pub(crate) fn generate_node_code(parsed: &ParsedNodeFn) -> syn::Result<TokenStre
#eval_impl
}
#cfg
const fn #identifier() -> #graphene_core::ProtoNodeIdentifier {
#graphene_core::ProtoNodeIdentifier::new(std::concat!(#identifier_path, "::", std::stringify!(#struct_name)))
}
#cfg
#[doc(inline)]
pub use #mod_name::#struct_name;
#[doc(hidden)]
#node_input_accessor
#cfg
#[doc(hidden)]
mod #mod_name {
use super::*;
@ -434,7 +439,14 @@ pub(crate) fn generate_node_code(parsed: &ParsedNodeFn) -> syn::Result<TokenStre
}
/// Generates strongly typed utilites to access inputs
fn generate_node_input_references(parsed: &ParsedNodeFn, fn_generics: &[crate::GenericParam], field_idents: &[&PatIdent], graphene_core: &TokenStream2, identifier: &Ident) -> TokenStream2 {
fn generate_node_input_references(
parsed: &ParsedNodeFn,
fn_generics: &[crate::GenericParam],
field_idents: &[&PatIdent],
graphene_core: &TokenStream2,
identifier: &Ident,
cfg: &TokenStream2,
) -> TokenStream2 {
let inputs_module_name = format_ident!("{}", parsed.struct_name.to_string().to_case(Case::Snake));
let mut generated_input_accessor = Vec::new();
@ -479,6 +491,7 @@ fn generate_node_input_references(parsed: &ParsedNodeFn, fn_generics: &[crate::G
}
quote! {
#cfg
pub mod #inputs_module_name {
use super::*;