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[Rust] Second stage of Rust Refactor (apache#5527)
* Add tvm-rt crate * Backport changes from frontend branch * Format * Add ASF headers * Address self-code review * Replace with helper * Fix lint * Fix * Clean up repro debugging * WIP * Remove global resgistry to fix one memory issue * Fix * Format * Format * Update rust/tvm-rt/README.md Co-authored-by: Jason Knight <binarybana@gmail.com> * Format * Duplicate TVM macros * Split macros * Restore old macro for old crates * Repair macros * Fix format * Format Co-authored-by: Jason Knight <binarybana@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you under the Apache License, Version 2.0 (the | ||
| # "License"); you may not use this file except in compliance | ||
| # with the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, | ||
| # software distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| # KIND, either express or implied. See the License for the | ||
| # specific language governing permissions and limitations | ||
| # under the License. | ||
|
|
||
| [package] | ||
| name = "tvm-macros" | ||
| version = "0.1.1" | ||
| license = "Apache-2.0" | ||
| description = "Procedural macros of the TVM crate." | ||
| repository = "https://github.com/apache/incubator-tvm" | ||
| readme = "README.md" | ||
| keywords = ["tvm"] | ||
| authors = ["TVM Contributors"] | ||
| edition = "2018" | ||
|
|
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| [lib] | ||
| proc-macro = true | ||
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| [dependencies] | ||
| goblin = "0.0.24" | ||
| proc-macro2 = "^1.0" | ||
| quote = "^1.0" | ||
| syn = { version = "1.0.17", features = ["full", "extra-traits"] } |
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| use proc_macro2::Span; | ||
| use quote::quote; | ||
| use syn::parse::{Parse, ParseStream, Result}; | ||
|
|
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| use syn::{FnArg, Generics, Ident, Lit, Meta, NestedMeta, Pat, ReturnType, TraitItemMethod, Type}; | ||
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| struct External { | ||
| tvm_name: String, | ||
| ident: Ident, | ||
| generics: Generics, | ||
| inputs: Vec<FnArg>, | ||
| ret_type: ReturnType, | ||
| } | ||
|
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| impl Parse for External { | ||
| fn parse(input: ParseStream) -> Result<Self> { | ||
| let method: TraitItemMethod = input.parse()?; | ||
| assert_eq!(method.attrs.len(), 1); | ||
| let sig = method.sig; | ||
| let tvm_name = method.attrs[0].parse_meta()?; | ||
| let tvm_name = match tvm_name { | ||
| Meta::List(meta_list) => { | ||
| let name = meta_list.path.get_ident().expect("name"); | ||
| assert_eq!(name.to_string(), "name".to_string()); | ||
| match meta_list.nested.first() { | ||
| Some(NestedMeta::Lit(Lit::Str(lit))) => lit.value(), | ||
| _ => panic!(), | ||
| } | ||
| } | ||
| _ => panic!(), | ||
| }; | ||
| assert_eq!(method.default, None); | ||
| assert!(method.semi_token != None); | ||
| let ident = sig.ident; | ||
| let generics = sig.generics; | ||
| let inputs = sig.inputs.iter().map(|param| param.clone()).collect(); | ||
| let ret_type = sig.output; | ||
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| Ok(External { | ||
| tvm_name, | ||
| ident, | ||
| generics, | ||
| inputs, | ||
| ret_type, | ||
| }) | ||
| } | ||
| } | ||
|
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| struct ExternalInput { | ||
| externs: Vec<External>, | ||
| } | ||
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| impl Parse for ExternalInput { | ||
| fn parse(input: ParseStream) -> Result<Self> { | ||
| let mut externs: Vec<External> = Vec::new(); | ||
|
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| loop { | ||
| if input.is_empty() { | ||
| break; | ||
| } | ||
| externs.push(input.parse()?); | ||
| } | ||
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| Ok(ExternalInput { externs }) | ||
| } | ||
| } | ||
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| pub fn macro_impl(input: proc_macro::TokenStream) -> proc_macro::TokenStream { | ||
| let ext_input = syn::parse_macro_input!(input as ExternalInput); | ||
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| let tvm_rt_crate = crate::util::get_tvm_rt_crate(); | ||
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| let err_type = quote! { #tvm_rt_crate::Error }; | ||
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| let mut items = Vec::new(); | ||
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| for external in &ext_input.externs { | ||
| let name = &external.ident; | ||
| let global_name = format!("global_{}", external.ident); | ||
| let global_name = Ident::new(&global_name, Span::call_site()); | ||
| let ext_name = &external.tvm_name; | ||
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| let ty_params: Vec<syn::TypeParam> = external | ||
| .generics | ||
| .params | ||
| .iter() | ||
| .map(|ty_param| match ty_param { | ||
| syn::GenericParam::Type(param) => param.clone(), | ||
| _ => panic!(), | ||
| }) | ||
| .collect(); | ||
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| let args = &external.inputs; | ||
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| let (args, tys): (Vec<Ident>, Vec<Type>) = args | ||
| .iter() | ||
| .map(|arg| match arg { | ||
| FnArg::Typed(pat_type) => match &*pat_type.pat { | ||
| Pat::Ident(pat_ident) => { | ||
| let ident: Ident = pat_ident.ident.clone(); | ||
| let ty: Type = *pat_type.ty.clone(); | ||
| (ident, ty) | ||
| } | ||
| _ => panic!(), | ||
| }, | ||
| _ => panic!(), | ||
| }) | ||
| .unzip(); | ||
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| let ret_type = match &external.ret_type { | ||
| ReturnType::Type(_, rtype) => *rtype.clone(), | ||
| _ => panic!(), | ||
| }; | ||
|
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| let global = quote! { | ||
| #[allow(non_upper_case_globals)] | ||
| static #global_name: ::once_cell::sync::Lazy<#tvm_rt_crate::Function> = | ||
| ::once_cell::sync::Lazy::new(|| { | ||
| #tvm_rt_crate::Function::get(#ext_name) | ||
| .expect(concat!("unable to load external function", stringify!(#ext_name), "from TVM registry.")) | ||
| }); | ||
| }; | ||
|
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| items.push(global); | ||
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| let wrapper = quote! { | ||
| pub fn #name<#(#ty_params),*>(#(#args : #tys),*) -> Result<#ret_type, #err_type> { | ||
| let func_ref: #tvm_rt_crate::Function = #global_name.clone(); | ||
| let func_ref: Box<dyn Fn(#(#tys),*) -> Result<#ret_type, #err_type>> = func_ref.to_boxed_fn(); | ||
| let res: #ret_type = func_ref(#(#args),*)?; | ||
| Ok(res) | ||
| } | ||
| }; | ||
|
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| items.push(wrapper); | ||
| } | ||
|
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| proc_macro::TokenStream::from(quote! { | ||
| #(#items | ||
| )* | ||
| }) | ||
| } |
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