Automatically build release on tag push (Wilfred#11)

.github/workflows/release.yml

@@ -0,0 +1,58 @@
+name: release
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build-release:
+    name: build-release
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - macos-latest
+          - ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+
+      - name: Install Node
+        uses: actions/setup-node@v2
+        with:
+          node-version: "14.x"
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: Ensure generated parser files are up to date
+        run: npx tree-sitter generate
+
+      - name: Ensure tests pass
+        run: npx tree-sitter test
+
+      - name: Compile library file
+        run: cc -shared -fPIC -g -O2 -I src src/parser.c -o tree-sitter-gleam.so
+
+      - name: Create archive
+        run: |
+          VERSION="${GITHUB_REF#refs/tags/}"
+          case ${{ matrix.os }} in
+            "ubuntu-latest") FAMILY="linux";;
+            "macos-latest") FAMILY="macos";;
+          esac
+          ARCHIVE="tree-sitter-gleam-$VERSION-$FAMILY.tar.gz"
+
+          tar -czf $ARCHIVE tree-sitter-gleam.so
+
+          echo "ASSET=$ARCHIVE" >> $GITHUB_ENV
+
+      - name: Upload release archive
+        uses: softprops/action-gh-release@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          draft: true
+          prerelease: false
+          fail_on_unmatched_files: true
+          files: |
+            ${{ env.ASSET }}