Rename `tdb-derive` to `tdb-macros`
The proc_macro can now be applied on modules only All functions within the module will be considered to be a test This has the advantage of not having to flag every test functionnext
Sayan Nandan
4 years ago
parent
16304cc4f7
commit
147f13a020
@ -1,75 +0,0 @@
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/*
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* Created on Sun Sep 13 2020
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*
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* This file is a part of TerrabaseDB
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* Copyright (c) 2020, Sayan Nandan <ohsayan at outlook dot com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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//! A library containing a collection of custom derives used by TerrabaseDB
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use proc_macro::TokenStream;
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use quote::quote;
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use syn;
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fn parse_toks(mut input: syn::ItemFn) -> Result<TokenStream, syn::Error> {
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let sig = &mut input.sig;
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let body = &input.block;
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let attrs = &input.attrs;
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let vis = input.vis;
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let header = quote! {
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#[::core::prelude::v1::test]
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};
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let result = quote! {
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#header
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#(#attrs)*
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#vis #sig {
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let runtime = testsuite::service::BackGroundTask::new();
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runtime.execute(|| {#body});
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drop(runtime);
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}
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};
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Ok(result.into())
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}
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fn test(_args: TokenStream, item: TokenStream) -> TokenStream {
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let input = syn::parse_macro_input!(item as syn::ItemFn);
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for attr in &input.attrs {
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if attr.path.is_ident("test") {
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let msg = "second test attribute is supplied";
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return syn::Error::new_spanned(&attr, msg)
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.to_compile_error()
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.into();
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}
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}
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if !input.sig.inputs.is_empty() {
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let msg = "the test function cannot accept arguments";
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return syn::Error::new_spanned(&input.sig.inputs, msg)
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.to_compile_error()
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.into();
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}
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parse_toks(input).unwrap_or_else(|e| e.to_compile_error().into())
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}
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#[proc_macro_attribute]
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/// Execute the function as a test
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/// This function starts the server in the background and terminates it when
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/// the test is over. Do note that, at the moment, this expects a `service` module
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/// to have a `BackgroundTask` object which should start the background the server
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pub fn dbtest(args: TokenStream, item: TokenStream) -> TokenStream {
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test(args, item)
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}
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@ -0,0 +1,138 @@
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/*
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* Created on Sun Sep 13 2020
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*
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* This file is a part of TerrabaseDB
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* Copyright (c) 2020, Sayan Nandan <ohsayan at outlook dot com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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//! A library containing a collection of custom derives used by TerrabaseDB
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use proc_macro::TokenStream;
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use quote::quote;
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use rand::*;
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use std::collections::HashSet;
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use syn;
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// TODO(@ohsayan): Write docs and also make this use the tokio runtime
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fn parse_dbtest(mut input: syn::ItemFn, rand: u16) -> Result<TokenStream, syn::Error> {
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let sig = &mut input.sig;
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let fname = sig.ident.to_string();
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let body = &input.block;
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let attrs = &input.attrs;
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let vis = input.vis;
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let header = quote! {
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#[::core::prelude::v1::test]
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};
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if sig.asyncness.is_none() {
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let msg = "`dbtest` functions need to be async";
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return Err(syn::Error::new_spanned(sig.fn_token, msg));
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}
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let body = quote! {
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let mut socket = tokio::net::TcpStream::connect(#rand).await;
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#body
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socket.shutdown(std::net::Shutdown::Both).unwrap();
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};
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let result = quote! {
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#header
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#(#attrs)*
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#vis #sig {
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let runtime = Builder::new_multi_thread()
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.worker_threads(4)
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.thread_name(#fname)
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.thread_stack_size(3 * 1024 * 1024)
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.build()
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.unwrap()
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.block_on(async { #body });
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}
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};
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Ok(result.into())
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}
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fn parse_test_sig(input: syn::ItemFn, rand: u16) -> TokenStream {
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for attr in &input.attrs {
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if attr.path.is_ident("test") {
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let msg = "second test attribute is supplied";
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return syn::Error::new_spanned(&attr, msg)
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.to_compile_error()
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.into();
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}
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}
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if !input.sig.inputs.is_empty() {
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let msg = "the test function cannot accept arguments";
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return syn::Error::new_spanned(&input.sig.inputs, msg)
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.to_compile_error()
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.into();
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}
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parse_dbtest(input, rand).unwrap_or_else(|e| e.to_compile_error().into())
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}
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fn parse_test_module(_args: TokenStream, item: TokenStream) -> TokenStream {
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let input = syn::parse_macro_input!(item as syn::ItemMod);
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let (_, content) = input.content.unwrap();
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let attrs = input.attrs;
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let vis = input.vis;
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let mod_token = input.mod_token;
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let modname = input.ident;
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let mut rng = thread_rng();
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let mut in_set = HashSet::<u16>::new();
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in_set.insert(80);
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in_set.insert(443);
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let mut result = quote! {};
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for item in content {
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let mut rand: u16 = rng.gen_range(0, 65535);
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while in_set.contains(&rand) {
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rand = rng.gen_range(0, 65535);
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}
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match item {
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// We just care about functions, so parse functions and ignore everything
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// else
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syn::Item::Fn(function) => {
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let inp = parse_test_sig(function, rand);
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let __tok: syn::ItemFn = syn::parse_macro_input!(inp as syn::ItemFn);
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let tok = quote! {
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#__tok
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};
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result = quote! {
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#result
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#tok
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};
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}
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_ => continue,
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}
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}
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let result = quote! {
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#result
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};
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let header = quote! {
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#[::core::prelude::v1::test]
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};
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let finalres = quote! {
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#header
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#(#attrs)*
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#mod_token #vis #modname {
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#result
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}
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};
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finalres.into()
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}
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#[proc_macro_attribute]
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pub fn dbtest(args: TokenStream, item: TokenStream) -> TokenStream {
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parse_test_module(args, item)
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}
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