CI: fix rust formatting

`cargo fmt --all` should be avoided in CI as that will include `rust/ast-generator`
which has sources provided by bazel (`bazel run //rust/ast-generator:inject_sources`
can provide those sources in-tree).

Now the formatting checks are limited to the sources that trigger the jobs, and a
check is added to `rust/ast-generator`.

Author: Paolo Tranquilli

.github/workflows/ql-for-ql-tests.yml

@@ -40,7 +40,7 @@ jobs:
             ql/target
           key: ${{ runner.os }}-${{ steps.os_version.outputs.version }}-qltest-cargo-${{ hashFiles('ql/rust-toolchain.toml', 'ql/**/Cargo.lock') }}
       - name: Check formatting
-        run: cd ql; cargo fmt --all -- --check
+        run: cd ql; cargo fmt -- --check
       - name: Build extractor
         run: |
           cd ql;

.github/workflows/ruby-build.yml

@@ -79,7 +79,7 @@ jobs:
           key: ${{ runner.os }}-${{ steps.os_version.outputs.version }}-ruby-rust-cargo-${{ hashFiles('ruby/extractor/rust-toolchain.toml', 'ruby/extractor/**/Cargo.lock') }}
       - name: Check formatting
         if: steps.cache-extractor.outputs.cache-hit != 'true'
-        run: cd extractor && cargo fmt --all -- --check
+        run: cd extractor && cargo fmt -- --check
       - name: Build
         if: steps.cache-extractor.outputs.cache-hit != 'true'
         run: cd extractor && cargo build --verbose

.github/workflows/rust.yml

@@ -23,22 +23,46 @@ permissions:
   contents: read
 
 jobs:
-  rust-code:
+  rust-ast-generator:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: rust/ast-generator
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - name: Inject sources
+        shell: bash
+        run: |
+          bazel run //rust/ast-generator:inject_sources
       - name: Format
-        working-directory: rust/extractor
         shell: bash
         run: |
           cargo fmt --check
       - name: Compilation
-        working-directory: rust/extractor
         shell: bash
         run: cargo check
       - name: Clippy
+        shell: bash
+        run: |
+          cargo clippy --fix
+          git diff --exit-code
+  rust-code:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
         working-directory: rust/extractor
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Format
+        shell: bash
+        run: |
+          cargo fmt --check
+      - name: Compilation
+        shell: bash
+        run: cargo check
+      - name: Clippy
         shell: bash
         run: |
           cargo clippy --fix

.github/workflows/tree-sitter-extractor-test.yml

@@ -32,17 +32,17 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Check formatting
-        run: cargo fmt --all -- --check
+        run: cargo fmt -- --check
       - name: Run tests
         run: cargo test --verbose
   fmt:
-    runs-on: ubuntu-latest  
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: Check formatting
         run: cargo fmt --check
   clippy:
-    runs-on: ubuntu-latest  
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: Run clippy