Add Reusable Workflows

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>

.github/workflows/main.yaml

@@ -8,15 +8,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v4
+      - uses: ./.github/workflows/treesitter.yaml
-      - uses: tree-sitter/setup-action@v2
-        with:
-          install-cli: true
       # Because our tree-sitter code is in a subdirectory,
       # and working-directory does not apply to uses, we
       # are forced to specify calls to the CI ourselves.
       # See https://github.com/orgs/community/discussions/25742
-      - run: tree-sitter generate
-        working-directory: ./tree-sitter-p4
       - run: tree-sitter test
         working-directory: ./tree-sitter-p4

.github/workflows/treesitter.yaml

@@ -0,0 +1,23 @@
+on: [workflow_call]
+
+name: Install Treesitter
+
+jobs:
+  install-treesitter:
+    name: Install Treesitter
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v4
+      - uses: tree-sitter/setup-action@v2
+        with:
+          install-cli: true
+  generate-treesitter:
+    name: Generate Grammar
+    needs: install-treesitter
+      # Because our tree-sitter code is in a subdirectory,
+      # and working-directory does not apply to uses, we
+      # are forced to specify calls to the CI ourselves.
+      # See https://github.com/orgs/community/discussions/25742
+      - run: tree-sitter generate
+        working-directory: ./tree-sitter-p4