installing ANTLR4 in CI

Author: Janther

.github/workflows/CI.yml

@@ -38,6 +38,8 @@ jobs:
           cache: 'npm'
       - name: Install
         run: npm install
+      - name: Install ANTLR4
+        run: pip install antlr4-tools
       - name: Build
         run: npm run build
       - name: Run integration

package.json

@@ -13,7 +13,7 @@
   ],
   "types": "dist/src/index.d.ts",
   "scripts": {
-    "antlr": "antlr -Dlanguage=TypeScript -visitor -no-listener -o src/ antlr/Solidity.g4 && npm run tokens",
+    "antlr": "antlr4 -Dlanguage=TypeScript -visitor -no-listener -o src/ antlr/Solidity.g4 && npm run tokens",
     "tokens": "node ./scripts/tokens-string.js",
     "build:browser": "esbuild src/index.ts --outfile=dist/index.iife.js --bundle --sourcemap --format=iife --global-name=SolidityParser --inject:./process-shim.js",
     "build:node": "esbuild src/index.ts --outfile=dist/index.cjs.js --bundle  --sourcemap --format=cjs --platform=node --target=node12 --define:import.meta.url='_importMetaUrl' --banner:js=\"const _importMetaUrl=require('url').pathToFileURL(__filename)\"",