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Simplify the implementation of rustc_queries
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@ -344,43 +344,26 @@ pub fn rustc_queries(input: TokenStream) -> TokenStream {
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let mut attributes = Vec::new();
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// Pass on the fatal_cycle modifier
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if let Some(fatal_cycle) = &modifiers.fatal_cycle {
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attributes.push(quote! { (#fatal_cycle) });
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};
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// Pass on the arena modifier
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if let Some(ref arena_cache) = modifiers.arena_cache {
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attributes.push(quote! {span=> (#arena_cache) });
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};
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// Pass on the cycle_delay_bug modifier
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if let Some(cycle_delay_bug) = &modifiers.cycle_delay_bug {
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attributes.push(quote! { (#cycle_delay_bug) });
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};
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// Pass on the no_hash modifier
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if let Some(no_hash) = &modifiers.no_hash {
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attributes.push(quote! { (#no_hash) });
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};
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// Pass on the anon modifier
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if let Some(anon) = &modifiers.anon {
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attributes.push(quote! { (#anon) });
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};
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// Pass on the eval_always modifier
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if let Some(eval_always) = &modifiers.eval_always {
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attributes.push(quote! { (#eval_always) });
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};
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// Pass on the depth_limit modifier
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if let Some(depth_limit) = &modifiers.depth_limit {
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attributes.push(quote! { (#depth_limit) });
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};
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// Pass on the separate_provide_extern modifier
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if let Some(separate_provide_extern) = &modifiers.separate_provide_extern {
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attributes.push(quote! { (#separate_provide_extern) });
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macro_rules! passthrough {
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( $( $modifier:ident ),+ $(,)? ) => {
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$( if let Some($modifier) = &modifiers.$modifier {
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attributes.push(quote! { (#$modifier) });
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}; )+
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}
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// Pass on the remap_env_constness modifier
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if let Some(remap_env_constness) = &modifiers.remap_env_constness {
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attributes.push(quote! { (#remap_env_constness) });
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}
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passthrough!(
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fatal_cycle,
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arena_cache,
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cycle_delay_bug,
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no_hash,
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anon,
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eval_always,
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depth_limit,
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separate_provide_extern,
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remap_env_constness,
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);
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// This uses the span of the query definition for the commas,
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// which can be important if we later encounter any ambiguity
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// errors with any of the numerous macro_rules! macros that
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