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Merge #9752

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9752: feature: Declare proc-macro dependent crates in `rust-project.json` r=matklad a=tobywf

This adds the `is_proc_macro` flag in `rust-project.json`. By default, this is `false` and not required, so existing projects won't break/have the same behavior as before this change. If the flag is true, a dependency to the `proc_macro` sysroot crate is added (if it exists), so that rust-analyzer can resolve those imports.

This fixes #9726 .

I've also added some tests in the second commit. The first is a smoke test for a basic, minimal `rust-project.json` file. The second is a more targeted test for the flag. Both tests depend on the fake sysroot (a bunch of directories in the correct layout with empty `lib.rs` files), and also on `env!("CARGO_MANIFEST_DIR")` being an absolute path. I'm not sure if the later assumption is valid on all platforms. I wanted to at least try and add tests, but I'm happy to rework them or remove them if you don't think that's the way to go.

(You can license/relicense my contribution in any way you wish without contacting me.)

Co-authored-by: Toby Fleming <sourcecode@tobywf.com>
This commit is contained in:
bors[bot] 2021-08-02 13:14:22 +00:00 committed by GitHub
commit 314e2e75c0
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17 changed files with 570 additions and 28 deletions
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4
crates/project_model/src/project_json.rs
View File

@ -37,6 +37,7 @@ pub struct Crate {
pub(crate) is_workspace_member: bool,
pub(crate) include: Vec<AbsPathBuf>,
pub(crate) exclude: Vec<AbsPathBuf>,
pub(crate) is_proc_macro: bool,
}
impl ProjectJson {
@ -96,6 +97,7 @@ impl ProjectJson {
is_workspace_member,
include,
exclude,
is_proc_macro: crate_data.is_proc_macro,
}
})
.collect::<Vec<_>>(),
@ -135,6 +137,8 @@ struct CrateData {
proc_macro_dylib_path: Option<PathBuf>,
is_workspace_member: Option<bool>,
source: Option<CrateSource>,
#[serde(default)]
is_proc_macro: bool,
}
#[derive(Deserialize, Debug, Clone)]

553
crates/project_model/src/tests.rs
View File

@ -1,12 +1,20 @@
use std::path::PathBuf;
use std::{
ops::Deref,
path::{Path, PathBuf},
};
use base_db::FileId;
use base_db::{CrateGraph, FileId};
use expect_test::{expect, Expect};
use paths::AbsPath;
use serde::de::DeserializeOwned;
use crate::{CargoWorkspace, CfgOverrides, ProjectWorkspace, Sysroot, WorkspaceBuildScripts};
use crate::{
CargoWorkspace, CfgOverrides, ProjectJson, ProjectJsonData, ProjectWorkspace, Sysroot,
WorkspaceBuildScripts,
};
fn check(file: &str, expect: Expect) {
let meta = get_test_metadata(file);
fn load_cargo(file: &str) -> CrateGraph {
let meta = get_test_json_file(file);
let cargo_workspace = CargoWorkspace::new(meta);
let project_workspace = ProjectWorkspace::Cargo {
cargo: cargo_workspace,
@ -16,23 +24,21 @@ fn check(file: &str, expect: Expect) {
rustc_cfg: Vec::new(),
cfg_overrides: CfgOverrides::default(),
};
let crate_graph = project_workspace.to_crate_graph(None, {
let mut counter = 0;
&mut move |_path| {
counter += 1;
Some(FileId(counter))
}
});
let mut crate_graph = format!("{:#?}", crate_graph);
replace_root(&mut crate_graph, false);
expect.assert_eq(&crate_graph);
to_crate_graph(project_workspace)
}
fn get_test_metadata(file: &str) -> cargo_metadata::Metadata {
let mut json = get_test_data(file).parse::<serde_json::Value>().unwrap();
fn load_rust_project(file: &str) -> CrateGraph {
let data = get_test_json_file(file);
let project = rooted_project_json(data);
let sysroot = Some(get_fake_sysroot());
let project_workspace = ProjectWorkspace::Json { project, sysroot, rustc_cfg: Vec::new() };
to_crate_graph(project_workspace)
}
fn get_test_json_file<T: DeserializeOwned>(file: &str) -> T {
let file = get_test_path(file);
let data = std::fs::read_to_string(file).unwrap();
let mut json = data.parse::<serde_json::Value>().unwrap();
fixup_paths(&mut json);
return serde_json::from_value(json).unwrap();
@ -58,16 +64,46 @@ fn replace_root(s: &mut String, direction: bool) {
}
}
fn get_test_data(file: &str) -> String {
fn get_test_path(file: &str) -> PathBuf {
let base = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
let file = base.join("test_data").join(file);
std::fs::read_to_string(file).unwrap()
base.join("test_data").join(file)
}
fn get_fake_sysroot() -> Sysroot {
let sysroot_path = get_test_path("fake-sysroot");
let sysroot_src_dir = AbsPath::assert(&sysroot_path);
Sysroot::load(&sysroot_src_dir).unwrap()
}
fn rooted_project_json(data: ProjectJsonData) -> ProjectJson {
let mut root = "$ROOT$".to_string();
replace_root(&mut root, true);
let path = Path::new(&root);
let base = AbsPath::assert(path);
ProjectJson::new(base, data)
}
fn to_crate_graph(project_workspace: ProjectWorkspace) -> CrateGraph {
project_workspace.to_crate_graph(None, {
let mut counter = 0;
&mut move |_path| {
counter += 1;
Some(FileId(counter))
}
})
}
fn check_crate_graph(crate_graph: CrateGraph, expect: Expect) {
let mut crate_graph = format!("{:#?}", crate_graph);
replace_root(&mut crate_graph, false);
expect.assert_eq(&crate_graph);
}
#[test]
fn hello_world_project_model() {
check(
"hello-world-metadata.json",
fn cargo_hello_world_project_model() {
let crate_graph = load_cargo("hello-world-metadata.json");
check_crate_graph(
crate_graph,
expect![[r#"
CrateGraph {
arena: {
@ -514,3 +550,468 @@ fn hello_world_project_model() {
}"#]],
)
}
#[test]
fn rust_project_hello_world_project_model() {
let crate_graph = load_rust_project("hello-world-project.json");
check_crate_graph(
crate_graph,
expect![[r#"
CrateGraph {
arena: {
CrateId(
0,
): CrateData {
root_file_id: FileId(
1,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"alloc",
),
canonical_name: "alloc",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [
Dependency {
crate_id: CrateId(
1,
),
name: CrateName(
"core",
),
},
],
proc_macro: [],
},
CrateId(
10,
): CrateData {
root_file_id: FileId(
11,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"unwind",
),
canonical_name: "unwind",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
7,
): CrateData {
root_file_id: FileId(
8,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"std_detect",
),
canonical_name: "std_detect",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
4,
): CrateData {
root_file_id: FileId(
5,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"proc_macro",
),
canonical_name: "proc_macro",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [
Dependency {
crate_id: CrateId(
6,
),
name: CrateName(
"std",
),
},
],
proc_macro: [],
},
CrateId(
1,
): CrateData {
root_file_id: FileId(
2,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"core",
),
canonical_name: "core",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
11,
): CrateData {
root_file_id: FileId(
12,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"hello_world",
),
canonical_name: "hello_world",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [
Dependency {
crate_id: CrateId(
1,
),
name: CrateName(
"core",
),
},
Dependency {
crate_id: CrateId(
0,
),
name: CrateName(
"alloc",
),
},
Dependency {
crate_id: CrateId(
6,
),
name: CrateName(
"std",
),
},
],
proc_macro: [],
},
CrateId(
8,
): CrateData {
root_file_id: FileId(
9,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"term",
),
canonical_name: "term",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
5,
): CrateData {
root_file_id: FileId(
6,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"profiler_builtins",
),
canonical_name: "profiler_builtins",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
2,
): CrateData {
root_file_id: FileId(
3,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"panic_abort",
),
canonical_name: "panic_abort",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
9,
): CrateData {
root_file_id: FileId(
10,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"test",
),
canonical_name: "test",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
CrateId(
6,
): CrateData {
root_file_id: FileId(
7,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"std",
),
canonical_name: "std",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [
Dependency {
crate_id: CrateId(
0,
),
name: CrateName(
"alloc",
),
},
Dependency {
crate_id: CrateId(
1,
),
name: CrateName(
"core",
),
},
Dependency {
crate_id: CrateId(
2,
),
name: CrateName(
"panic_abort",
),
},
Dependency {
crate_id: CrateId(
3,
),
name: CrateName(
"panic_unwind",
),
},
Dependency {
crate_id: CrateId(
5,
),
name: CrateName(
"profiler_builtins",
),
},
Dependency {
crate_id: CrateId(
7,
),
name: CrateName(
"std_detect",
),
},
Dependency {
crate_id: CrateId(
8,
),
name: CrateName(
"term",
),
},
Dependency {
crate_id: CrateId(
9,
),
name: CrateName(
"test",
),
},
Dependency {
crate_id: CrateId(
10,
),
name: CrateName(
"unwind",
),
},
],
proc_macro: [],
},
CrateId(
3,
): CrateData {
root_file_id: FileId(
4,
),
edition: Edition2018,
display_name: Some(
CrateDisplayName {
crate_name: CrateName(
"panic_unwind",
),
canonical_name: "panic_unwind",
},
),
cfg_options: CfgOptions(
[],
),
potential_cfg_options: CfgOptions(
[],
),
env: Env {
entries: {},
},
dependencies: [],
proc_macro: [],
},
},
}"#]],
);
}
#[test]
fn rust_project_is_proc_macro_has_proc_macro_dep() {
let crate_graph = load_rust_project("is-proc-macro-project.json");
// Since the project only defines one crate (outside the sysroot crates),
// it should be the one with the biggest Id.
let crate_id = crate_graph.iter().max().unwrap();
let crate_data = &crate_graph[crate_id];
// Assert that the project crate with `is_proc_macro` has a dependency
// on the proc_macro sysroot crate.
crate_data.dependencies.iter().find(|&dep| dep.name.deref() == "proc_macro").unwrap();
}

12
crates/project_model/src/workspace.rs
View File

@ -446,10 +446,20 @@ fn project_json_to_crate_graph(
for (from, krate) in project.crates() {
if let Some(&from) = crates.get(&from) {
if let Some((public_deps, _proc_macro)) = &sysroot_deps {
if let Some((public_deps, libproc_macro)) = &sysroot_deps {
for (name, to) in public_deps.iter() {
add_dep(&mut crate_graph, from, name.clone(), *to)
}
if krate.is_proc_macro {
if let Some(proc_macro) = libproc_macro {
add_dep(
&mut crate_graph,
from,
CrateName::new("proc_macro").unwrap(),
*proc_macro,
);
}
}
}
for dep in &krate.deps {

0
crates/project_model/test_data/fake-sysroot/alloc/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/core/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/panic_abort/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/panic_unwind/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/proc_macro/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/profiler_builtins/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/std/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/stdarch/crates/std_detect/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/term/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/test/src/lib.rs Normal file
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0
crates/project_model/test_data/fake-sysroot/unwind/src/lib.rs Normal file
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12
crates/project_model/test_data/hello-world-project.json Normal file
View File

@ -0,0 +1,12 @@
{
"sysroot_src": null,
"crates": [
{
"display_name": "hello_world",
"root_module": "$ROOT$src/lib.rs",
"edition": "2018",
"deps": [],
"is_workspace_member": true
}
]
}

13
crates/project_model/test_data/is-proc-macro-project.json Normal file
View File

@ -0,0 +1,13 @@
{
"sysroot_src": null,
"crates": [
{
"display_name": "is_proc_macro",
"root_module": "$ROOT$src/lib.rs",
"edition": "2018",
"deps": [],
"is_workspace_member": true,
"is_proc_macro": true
}
]
}

4
docs/user/manual.adoc
View File

@ -578,6 +578,8 @@ interface Crate {
/// the `env!` macro
env: : { [key: string]: string; },
/// Whether the crate is a proc-macro crate.
is_proc_macro: bool;
/// For proc-macro crates, path to compiled
/// proc-macro (.so file).
proc_macro_dylib_path?: string;
@ -597,7 +599,7 @@ Specifically, the `roots` setup will be different eventually.
There are three ways to feed `rust-project.json` to rust-analyzer:
* Place `rust-project.json` file at the root of the project, and rust-anlayzer will discover it.
* Place `rust-project.json` file at the root of the project, and rust-analyzer will discover it.
* Specify `"rust-analyzer.linkedProjects": [ "path/to/rust-project.json" ]` in the settings (and make sure that your LSP client sends settings as a part of initialize request).
* Specify `"rust-analyzer.linkedProjects": [ { "roots": [...], "crates": [...] }]` inline.