ci(tests): add optional workflow for generating grammars

run on PR by adding label `ci:generate` or manually

4 files changed, 84 insertions, 50 deletions

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index cd97cda06..5c29559d0 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -1,4 +1,4 @@
-name: Linting and style checking
+name: Lint
 
 on:
   pull_request:
@@ -34,7 +34,7 @@ jobs:
           args: --check .
 
   format-queries:
-    name: Lint queries
+    name: Format queries
     runs-on: ubuntu-latest
     env:
       NVIM_TAG: nightly
diff --git a/.github/workflows/test-core.yml b/.github/workflows/test-core.yml
new file mode 100644
index 000000000..313084dab
--- /dev/null
+++ b/.github/workflows/test-core.yml
@@ -0,0 +1,55 @@
+on:
+  workflow_call:
+    inputs:
+      type:
+        type: string
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  check_compilation:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        nvim_tag: [nightly]
+    name: ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    env:
+      NVIM: ${{ matrix.os == 'windows-latest' && 'nvim-win64\\bin\\nvim.exe' || 'nvim' }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: tree-sitter/setup-action/cli@v1
+      - uses: ilammy/msvc-dev-cmd@v1
+
+      - name: Install and prepare Neovim
+        env:
+          NVIM_TAG: ${{ matrix.nvim_tag }}
+        run: |
+          bash ./scripts/ci-install.sh
+
+      - if: inputs.type == 'generate'
+        name: Generate and compile parsers
+        run: $NVIM -l ./scripts/install-parsers.lua --generate --max-jobs=2
+
+      - if: inputs.type == 'queries'
+        name: Setup Parsers Cache
+        id: parsers-cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.local/share/nvim/site/parser/
+            ~/AppData/Local/nvim-data/site/parser/
+          key: parsers-${{ join(matrix.*, '-') }}-${{ hashFiles(
+            './lua/nvim-treesitter/install.lua',
+            './lua/nvim-treesitter/parsers.lua') }}
+
+      - if: inputs.type == 'queries'
+        name: Compile parsers
+        run: $NVIM -l ./scripts/install-parsers.lua
+
+      - name: Check query files
+        run: $NVIM -l ./scripts/check-queries.lua
diff --git a/.github/workflows/test-generate.yml b/.github/workflows/test-generate.yml
new file mode 100644
index 000000000..ae2f7bd1f
--- /dev/null
+++ b/.github/workflows/test-generate.yml
@@ -0,0 +1,20 @@
+name: Generate from grammar
+
+on:
+  pull_request:
+    types: [unlabeled, labeled, opened, synchronize, reopened]
+    branches:
+      - "main"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  check_compilation:
+    name: Build
+    if: contains(github.event.pull_request.labels.*.name, 'ci:generate') || github.event_name == 'workflow_dispatch'
+    uses: ./.github/workflows/test-core.yml
+    with:
+      type: "generate"
diff --git a/.github/workflows/test-queries.yml b/.github/workflows/test-queries.yml
index 819924c43..a7d4ae79c 100644
--- a/.github/workflows/test-queries.yml
+++ b/.github/workflows/test-queries.yml
@@ -1,58 +1,17 @@
-name: Test queries
+name: Check queries
 
 on:
-  # push:
-  #   branches:
-  #     - "main"
   pull_request:
     branches:
       - "main"
 
-# Cancel any in-progress CI runs for a PR if it is updated
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
-  cancel-in-progress: true
-
-defaults:
-  run:
-    shell: bash
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
 jobs:
   check_compilation:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-14]
-        nvim_tag: [nightly]
-
-    name: Parser compilation
-    runs-on: ${{ matrix.os }}
-    env:
-      NVIM: ${{ matrix.os == 'windows-latest' && 'nvim-win64\\bin\\nvim.exe' || 'nvim' }}
-    steps:
-      - uses: actions/checkout@v4
-      - uses: tree-sitter/setup-action/cli@v1
-      - uses: ilammy/msvc-dev-cmd@v1
-
-      - name: Install and prepare Neovim
-        env:
-          NVIM_TAG: ${{ matrix.nvim_tag }}
-        run: |
-          bash ./scripts/ci-install.sh
-
-      - name: Setup Parsers Cache
-        id: parsers-cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.local/share/nvim/site/parser/
-            ~/AppData/Local/nvim-data/site/parser/
-          key: parsers-${{ join(matrix.*, '-') }}-${{ hashFiles(
-            './lua/nvim-treesitter/install.lua',
-            './lua/nvim-treesitter/parsers.lua') }}
-
-      - name: Compile parsers
-        run: $NVIM -l ./scripts/install-parsers.lua
-
-      - name: Check query files
-        run: $NVIM -l ./scripts/check-queries.lua
+    name: Build
+    uses: ./.github/workflows/test-core.yml
+    with:
+      type: "queries"