Re-add rust-analyzer as a subtree

.gitmodules

@@ -38,9 +38,6 @@
 [submodule "src/doc/embedded-book"]
 	path = src/doc/embedded-book
 	url = https://github.com/rust-embedded/book.git
-[submodule "src/tools/rust-analyzer"]
-	path = src/tools/rust-analyzer
-	url = https://github.com/rust-analyzer/rust-analyzer.git
 [submodule "library/backtrace"]
 	path = library/backtrace
 	url = https://github.com/rust-lang/backtrace-rs.git

src/bootstrap/builder.rs

@@ -648,6 +648,7 @@ impl<'a> Builder<'a> {
                 test::Cargotest,
                 test::Cargo,
                 test::Rls,
+                test::RustAnalyzer,
                 test::ErrorIndex,
                 test::Distcheck,
                 test::RunMakeFullDeps,
@@ -1557,7 +1558,7 @@ impl<'a> Builder<'a> {
             Mode::ToolStd => {
                 // Right now this is just compiletest and a few other tools that build on stable.
                 // Allow them to use `feature(test)`, but nothing else.
-                rustflags.arg("-Zallow-features=binary-dep-depinfo,test,backtrace");
+                rustflags.arg("-Zallow-features=binary-dep-depinfo,test,backtrace,proc_macro_internals,proc_macro_diagnostic,proc_macro_span");
             }
             Mode::Std | Mode::Rustc | Mode::Codegen | Mode::ToolRustc => {}
         }

src/bootstrap/dist.rs

@@ -1058,7 +1058,11 @@ impl Step for RustAnalyzer {
         }
 
         let rust_analyzer = builder
-            .ensure(tool::RustAnalyzer { compiler, target, extra_features: Vec::new() })
+            .ensure(tool::RustAnalyzer {
+                compiler,
+                target,
+                extra_features: vec!["in-rust-tree".to_owned()]
+            })
             .expect("rust-analyzer always builds");
 
         let mut tarball = Tarball::new(builder, "rust-analyzer", &target.triple);

src/bootstrap/test.rs

@@ -352,6 +352,57 @@ impl Step for Rls {
     }
 }
 
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+pub struct RustAnalyzer {
+    stage: u32,
+    host: TargetSelection,
+}
+
+impl Step for RustAnalyzer {
+    type Output = ();
+    const ONLY_HOSTS: bool = true;
+    const DEFAULT: bool = true;
+
+    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
+        run.path("src/tools/rust-analyzer")
+    }
+
+    fn make_run(run: RunConfig<'_>) {
+        run.builder.ensure(Self { stage: run.builder.top_stage, host: run.target });
+    }
+
+    /// Runs `cargo test` for rust-analyzer.
+    fn run(self, builder: &Builder<'_>) {
+        let stage = self.stage;
+        let host = self.host;
+        let compiler = builder.compiler(stage, host);
+
+        builder
+            .ensure(tool::RustAnalyzer {
+                compiler,
+                target: self.host,
+                extra_features: vec!["in-rust-tree".to_owned()]
+            })
+            .expect("in-tree tool");
+
+        let mut cargo = tool::prepare_tool_cargo(
+            builder,
+            compiler,
+            Mode::ToolStd,
+            host,
+            "test",
+            "src/tools/rust-analyzer",
+            SourceType::InTree,
+            &["rust-analyzer/in-rust-tree".to_owned()],
+        );
+
+        cargo.add_rustc_lib_path(builder, compiler);
+        cargo.arg("--").args(builder.config.cmd.test_args());
+
+        builder.run(&mut cargo.into());
+    }
+}
+
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub struct Rustfmt {
     stage: u32,

src/bootstrap/tool.rs

@@ -1,7 +1,7 @@
 use std::collections::HashSet;
 use std::env;
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use std::process::Command;
 
 use crate::builder::{Builder, Cargo as CargoCommand, RunConfig, ShouldRun, Step};
@@ -250,6 +250,10 @@ pub fn prepare_tool_cargo(
         }
     }
 
+    // cargo doesn't set this env var yet, but it's needed by expect-test
+    // to build correct absolute paths for test_data files
+    cargo.env("CARGO_WORKSPACE_DIR", &dir);
+
     // clippy tests need to know about the stage sysroot. Set them consistently while building to
     // avoid rebuilding when running tests.
     cargo.env("SYSROOT", builder.sysroot(compiler));
@@ -780,7 +784,9 @@ tool_extended!((self, builder),
     // and this is close enough for now.
     RustDemangler, rust_demangler, "src/tools/rust-demangler", "rust-demangler", stable=false, in_tree=true, tool_std=true, {};
     Rustfmt, rustfmt, "src/tools/rustfmt", "rustfmt", stable=true, in_tree=true, {};
-    RustAnalyzer, rust_analyzer, "src/tools/rust-analyzer/crates/rust-analyzer", "rust-analyzer", stable=true, submodule="rust-analyzer", {};
+    RustAnalyzer, rust_analyzer, "src/tools/rust-analyzer/crates/rust-analyzer", "rust-analyzer", stable=true, in_tree=true, tool_std=true, {
+        self.extra_features.push("in-rust-tree".to_owned());
+    };
 );
 
 impl<'a> Builder<'a> {

src/tools/rust-analyzer/.cargo/config.toml

@@ -0,0 +1,11 @@
+[alias]
+xtask = "run --package xtask --bin xtask --"
+tq = "test -- -q"
+qt = "tq"
+lint = "clippy --all-targets -- -Aclippy::collapsible_if -Aclippy::needless_pass_by_value -Aclippy::nonminimal_bool -Aclippy::redundant_pattern_matching --cap-lints warn"
+
+[target.x86_64-pc-windows-msvc]
+linker = "rust-lld"
+
+[env]
+CARGO_WORKSPACE_DIR = { value = "", relative = true }

src/tools/rust-analyzer/.editorconfig

@@ -0,0 +1,19 @@
+# https://EditorConfig.org
+root = true
+
+[*]
+charset = utf-8
+trim_trailing_whitespace = true
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+
+[*.{rs,toml}]
+indent_size = 4
+
+[*.ts]
+indent_size = 4
+[*.js]
+indent_size = 4
+[*.json]
+indent_size = 4

src/tools/rust-analyzer/.git-blame-ignore-revs

@@ -0,0 +1,8 @@
+# for this file to take effect make sure you use git ^2.23 and
+# add ignoreFile to your git configuration:
+# ```
+# git config --global blame.ignoreRevsFile .git-blame-ignore-revs
+# ```
+
+# prettier format
+f247090558c9ba3c551566eae5882b7ca865225f

src/tools/rust-analyzer/.gitattributes

@@ -0,0 +1,8 @@
+* text=auto eol=lf
+# git grep shouldn't match entries in this benchmark data
+bench_data/** binary
+crates/syntax/test_data/** -text eof=LF
+# Older git versions try to fix line endings on images, this prevents it.
+*.png binary
+*.jpg binary
+*.ico binary

src/tools/rust-analyzer/.github/ISSUE_TEMPLATE/blank_issue.md

@@ -0,0 +1,10 @@
+---
+name: Blank Issue
+about: Create a blank issue.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+

src/tools/rust-analyzer/.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,26 @@
+---
+name: Bug report
+about: Create a bug report for rust-analyzer.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!--
+Troubleshooting guide: https://rust-analyzer.github.io/manual.html#troubleshooting
+Forum for questions: https://users.rust-lang.org/c/ide/14
+
+Before submitting, please make sure that you're not running into one of these known issues:
+
+ 1. extension doesn't load in VSCodium: #11080
+ 2. on-the-fly diagnostics are mostly unimplemented (`cargo check` diagnostics will be shown when saving a file): #3107
+
+Otherwise please try to provide information which will help us to fix the issue faster. Minimal reproducible examples with few dependencies are especially lovely <3.
+-->
+
+**rust-analyzer version**: (eg. output of "Rust Analyzer: Show RA Version" command)
+
+**rustc version**: (eg. output of `rustc -V`)
+
+**relevant settings**: (eg. client settings, or environment variables like `CARGO`, `RUSTUP_HOME` or `CARGO_HOME`)

src/tools/rust-analyzer/.github/ISSUE_TEMPLATE/critical_nightly_regression.md

@@ -0,0 +1,17 @@
+---
+name: Critical Nightly Regression
+about: You are using nightly rust-analyzer and the latest version is unusable.
+title: ''
+labels: ''
+assignees: 'matklad'
+
+---
+
+<!--
+Troubleshooting guide: https://rust-analyzer.github.io/manual.html#troubleshooting
+
+Please try to provide information which will help us to fix the issue faster. Minimal reproducible examples with few dependencies are especially lovely <3.
+-->
+
+This is a serious regression in nightly and it's important to fix it before the next release.
+@matklad, please take a look.

src/tools/rust-analyzer/.github/actions/github-release/Dockerfile

@@ -0,0 +1,8 @@
+FROM node:slim
+
+COPY . /action
+WORKDIR /action
+
+RUN npm install --production
+
+ENTRYPOINT ["node", "/action/main.js"]

src/tools/rust-analyzer/.github/actions/github-release/README.md

@@ -0,0 +1,21 @@
+# github-release
+
+Copy-pasted from
+https://github.com/bytecodealliance/wasmtime/tree/8acfdbdd8aa550d1b84e0ce1e6222a6605d14e38/.github/actions/github-release
+
+An action used to publish GitHub releases for `wasmtime`.
+
+As of the time of this writing there's a few actions floating around which
+perform github releases but they all tend to have their set of drawbacks.
+Additionally nothing handles deleting releases which we need for our rolling
+`dev` release.
+
+To handle all this this action rolls-its-own implementation using the
+actions/toolkit repository and packages published there. These run in a Docker
+container and take various inputs to orchestrate the release from the build.
+
+More comments can be found in `main.js`.
+
+Testing this is really hard. If you want to try though run `npm install` and
+then `node main.js`. You'll have to configure a bunch of env vars though to get
+anything reasonably working.

src/tools/rust-analyzer/.github/actions/github-release/action.yml

@@ -0,0 +1,15 @@
+name: 'wasmtime github releases'
+description: 'wasmtime github releases'
+inputs:
+  token:
+    description: ''
+    required: true
+  name:
+    description: ''
+    required: true
+  files:
+    description: ''
+    required: true
+runs:
+  using: 'docker'
+  image: 'Dockerfile'