53 lines
1.5 KiB
Rust
53 lines
1.5 KiB
Rust
use proc_macro_crate::{FoundCrate, crate_name};
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use proc_macro2::{Span, TokenStream};
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use quote::{format_ident, quote};
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pub struct CrateIdent {
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gcore: syn::Result<TokenStream>,
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gcore_shaders: syn::Result<TokenStream>,
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raster_types: syn::Result<TokenStream>,
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wgpu_executor: syn::Result<TokenStream>,
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}
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impl CrateIdent {
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pub fn gcore(&self) -> syn::Result<&TokenStream> {
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self.gcore.as_ref().map_err(Clone::clone)
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}
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pub fn gcore_shaders(&self) -> syn::Result<&TokenStream> {
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self.gcore_shaders.as_ref().map_err(Clone::clone)
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}
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pub fn raster_types(&self) -> syn::Result<&TokenStream> {
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self.raster_types.as_ref().map_err(Clone::clone)
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}
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pub fn wgpu_executor(&self) -> syn::Result<&TokenStream> {
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self.wgpu_executor.as_ref().map_err(Clone::clone)
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}
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}
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impl Default for CrateIdent {
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fn default() -> Self {
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let find_crate = |orig_name| match crate_name(orig_name) {
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Ok(FoundCrate::Itself) => Ok(quote!(crate)),
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Ok(FoundCrate::Name(name)) => {
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let name = format_ident!("{}", name);
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Ok(quote!(::#name))
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}
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Err(e) => Err(syn::Error::new(Span::call_site(), format!("Could not find dependency on `{orig_name}`:\n{e}"))),
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};
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let gcore = find_crate("core-types");
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let gcore_shaders = find_crate("no-std-types").or_else(|eshaders| gcore.clone().map_err(|ecore| syn::Error::new(Span::call_site(), format!("{ecore}\n\nFallback: {eshaders}"))));
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let raster_types = find_crate("raster-types");
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let wgpu_executor = find_crate("wgpu-executor");
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Self {
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gcore,
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gcore_shaders,
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raster_types,
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wgpu_executor,
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}
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}
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}
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