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Build test-macros in a build script

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This commit is contained in:
Jonas Schievink 2021-06-09 17:16:52 +02:00
parent 5f592f4f58
commit 05b3a4bc93
9 changed files with 133 additions and 75 deletions
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48
crates/proc_macro_test/src/lib.rs
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@ -1,48 +1,4 @@
//! Exports a few trivial procedural macros for testing.
use proc_macro::TokenStream;
#[proc_macro]
pub fn fn_like_noop(args: TokenStream) -> TokenStream {
args
}
#[proc_macro]
pub fn fn_like_panic(args: TokenStream) -> TokenStream {
panic!("fn_like_panic!({})", args);
}
#[proc_macro]
pub fn fn_like_error(args: TokenStream) -> TokenStream {
format!("compile_error!(\"fn_like_error!({})\");", args).parse().unwrap()
}
#[proc_macro_attribute]
pub fn attr_noop(_args: TokenStream, item: TokenStream) -> TokenStream {
item
}
#[proc_macro_attribute]
pub fn attr_panic(args: TokenStream, item: TokenStream) -> TokenStream {
panic!("#[attr_panic {}] {}", args, item);
}
#[proc_macro_attribute]
pub fn attr_error(args: TokenStream, item: TokenStream) -> TokenStream {
format!("compile_error!(\"#[attr_error({})] {}\");", args, item).parse().unwrap()
}
#[proc_macro_derive(DeriveEmpty)]
pub fn derive_empty(_item: TokenStream) -> TokenStream {
TokenStream::new()
}
#[proc_macro_derive(DerivePanic)]
pub fn derive_panic(item: TokenStream) -> TokenStream {
panic!("#[derive(DerivePanic)] {}", item);
}
#[proc_macro_derive(DeriveError)]
pub fn derive_error(item: TokenStream) -> TokenStream {
format!("compile_error!(\"#[derive(DeriveError)] {}\");", item).parse().unwrap()
}
pub static PROC_MACRO_TEST_LOCATION: &str =
include_str!(concat!(env!("OUT_DIR"), "/proc_macro_test_location.txt"));