check-generated-at-parser.yml

name: Check Generated AT Parser

on:
  pull_request:
    paths:
      - 'lib/at_parser/at_match.re'

jobs:
  check-generated-at-parser:
    runs-on: ubuntu-latest
    name: Check Generated AT Parser
    steps:
      - name: Update PATH for west
        run: |
          echo "$HOME/.local/bin" >> $GITHUB_PATH

      - name: Checkout sources
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          path: ncs/nrf
          fetch-depth: 0
          persist-credentials: false

      - name: Install dependencies
        run: |
          sudo apt-get install re2c=3.0-1

      - name: Generate lexer
        working-directory: ncs/nrf/lib/at_parser
        run: |
          re2c at_match.re -o at_match.c -W --tags --no-debug-info --no-generation-date --no-version

      - name: Compare lexers
        working-directory: ncs/nrf/lib/at_parser
        run: |
          if diff -q at_match.c generated/at_match.c > /dev/null; then
            echo "Lexer is up to date."
          else
            echo "Lexer is not up to date. Please re-generate the lexer and update the PR."
            exit 1
          fi