antlr-lint.yml

name: ANTLR Grammar Lint

on:
  push:
    paths:
      - '**/*.g4'
  pull_request:
    paths:
      - '**/*.g4'
  workflow_dispatch:

jobs:
  lint-grammars:
    runs-on: ubuntu-latest
    
    strategy:
      matrix:
        include:
          - dialect: redshift
            path: redshift
    
    steps:
      - name: Checkout parser repository
        uses: actions/checkout@v4
        with:
          path: parser
      
      - name: Checkout antlr-v4-linter repository
        uses: actions/checkout@v4
        with:
          repository: bytebase/antlr-v4-linter
          path: antlr-v4-linter
      
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'
      
      - name: Install antlr-v4-linter
        run: |
          cd antlr-v4-linter
          pip install -e .
          # Verify installation
          which antlr-lint
          antlr-lint --version || true
      
      - name: Lint ${{ matrix.dialect }} grammar files
        working-directory: parser
        run: |
          echo "Linting ANTLR grammar files for ${{ matrix.dialect }}"
          
          # Track if any errors occurred
          has_errors=false
          
          # Find all .g4 files in the dialect directory
          for file in $(find ${{ matrix.path }} -name "*.g4" -type f); do
            echo "Checking: $file"
            
            # Run antlr-lint on the grammar file
            if antlr-lint lint "$file"; then
              echo "✅ $file: Passed linting"
            else
              echo "❌ $file: Failed linting"
              echo "::error file=$file::ANTLR grammar linting failed"
              has_errors=true
            fi
          done
          
          if [ "$has_errors" = true ]; then
            echo "❌ Grammar linting failed for ${{ matrix.dialect }}"
            exit 1
          else
            echo "✅ All grammar files for ${{ matrix.dialect }} passed linting"
          fi
      
      - name: Summary
        if: always()
        working-directory: parser
        run: |
          echo "## ANTLR Grammar Lint Results" >> $GITHUB_STEP_SUMMARY
          echo "Dialect: **${{ matrix.dialect }}**" >> $GITHUB_STEP_SUMMARY
          echo "Path: \`${{ matrix.path }}\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          
          echo "### Files checked:" >> $GITHUB_STEP_SUMMARY
          find ${{ matrix.path }} -name "*.g4" -type f | while read -r file; do
            echo "- \`$file\`" >> $GITHUB_STEP_SUMMARY
          done