diff options
author | bors[bot] <26634292+bors[bot]@users.noreply.github.com> | 2021-06-11 11:44:07 +0100 |
---|---|---|
committer | GitHub <[email protected]> | 2021-06-11 11:44:07 +0100 |
commit | 050232a37e71ec06e8810af29178b124c76a527d (patch) | |
tree | 6fddd9fbac95b72b24f0024586fe6d0c985aa429 /crates/proc_macro_test/build.rs | |
parent | de9e989cf4435c58b8347b16881e50d06f754f20 (diff) | |
parent | d236fc6abecb308dab5e21898fa40f3bddf27640 (diff) |
Merge #9192
9192: internal: Build test-macros in a build script r=jonas-schievink a=jonas-schievink
This build the test-proc-macros in `proc_macro_test` in a build script, and copies the artifact to `OUT_DIR`. This should make it available throughout all of rust-analyzer at no cost other than depending on `proc_macro_test`, fixing https://github.com/rust-analyzer/rust-analyzer/issues/9067.
This hopefully will let us later write inline tests that utilize proc macros, which makes my life fixing proc macro bugs easier.
Opening this as a sort of RFC, because I'm not totally sure this approach is the best.
Co-authored-by: Jonas Schievink <[email protected]>
Diffstat (limited to 'crates/proc_macro_test/build.rs')
-rw-r--r-- | crates/proc_macro_test/build.rs | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/crates/proc_macro_test/build.rs b/crates/proc_macro_test/build.rs new file mode 100644 index 000000000..4653a93dd --- /dev/null +++ b/crates/proc_macro_test/build.rs | |||
@@ -0,0 +1,48 @@ | |||
1 | //! This will build the proc macro in `imp`, and copy the resulting dylib artifact into the | ||
2 | //! `OUT_DIR`. | ||
3 | //! | ||
4 | //! `proc_macro_test` itself contains only a path to that artifact. | ||
5 | |||
6 | use std::{ | ||
7 | env, fs, | ||
8 | path::{Path, PathBuf}, | ||
9 | process::Command, | ||
10 | }; | ||
11 | |||
12 | use cargo_metadata::Message; | ||
13 | |||
14 | fn main() { | ||
15 | let out_dir = env::var_os("OUT_DIR").unwrap(); | ||
16 | let out_dir = Path::new(&out_dir); | ||
17 | |||
18 | let name = "proc_macro_test_impl"; | ||
19 | let version = "0.0.0"; | ||
20 | let output = Command::new(toolchain::cargo()) | ||
21 | .current_dir("imp") | ||
22 | .args(&["build", "-p", "proc_macro_test_impl", "--message-format", "json"]) | ||
23 | .output() | ||
24 | .unwrap(); | ||
25 | assert!(output.status.success()); | ||
26 | |||
27 | let mut artifact_path = None; | ||
28 | for message in Message::parse_stream(output.stdout.as_slice()) { | ||
29 | match message.unwrap() { | ||
30 | Message::CompilerArtifact(artifact) => { | ||
31 | if artifact.target.kind.contains(&"proc-macro".to_string()) { | ||
32 | let repr = format!("{} {}", name, version); | ||
33 | if artifact.package_id.repr.starts_with(&repr) { | ||
34 | artifact_path = Some(PathBuf::from(&artifact.filenames[0])); | ||
35 | } | ||
36 | } | ||
37 | } | ||
38 | _ => (), // Unknown message | ||
39 | } | ||
40 | } | ||
41 | |||
42 | let src_path = artifact_path.expect("no dylib for proc_macro_test_impl found"); | ||
43 | let dest_path = out_dir.join(src_path.file_name().unwrap()); | ||
44 | fs::copy(src_path, &dest_path).unwrap(); | ||
45 | |||
46 | let info_path = out_dir.join("proc_macro_test_location.txt"); | ||
47 | fs::write(info_path, dest_path.to_str().unwrap()).unwrap(); | ||
48 | } | ||