antlr-rust-runtime 0.9.3

High performance Rust runtime and target support for ANTLR v4 generated parsers
Documentation 
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name: JavaScript Parse-Tree Parity

on:
  pull_request:
  push:
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: read

env:
  ANTLR_VERSION: 4.13.2
  ANTLR_JAR_SHA256: eae2dfa119a64327444672aff63e9ec35a20180dc5b8090b7a6ab85125df4d76
  ANTLR4_JAR: /tmp/antlr-cleanroom/tools/antlr-4.13.2-complete.jar
  GRAMMARS_V4: /tmp/grammars-v4
  GRAMMARS_V4_SHA: 284602b3f23ca54dc30778204ab7ae9e969145e9
  CARGO_TERM_COLOR: always

jobs:
  javascript-parity:
    name: JavaScript Parser Parity
    runs-on: ubuntu-latest
    timeout-minutes: 20

    steps:
      - name: Checkout
        # actions/checkout v7
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
        with:
          persist-credentials: false

      - name: Install stable Rust
        run: |
          rustup toolchain install stable --profile minimal --no-self-update
          rustup default stable

      - name: Install Java
        # actions/setup-java v5
        uses: actions/setup-java@0f481fcb613427c0f801b606911222b5b6f3083a
        with:
          distribution: temurin
          java-version: "21"

      - name: Setup Python
        # actions/setup-python v6
        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1
        with:
          python-version: "3.14"

      - name: Install antlr4-python3-runtime
        run: pip install "antlr4-python3-runtime==${ANTLR_VERSION}"

      - name: Download ANTLR jar
        run: |
          set -euxo pipefail
          mkdir -p /tmp/antlr-cleanroom/tools
          curl --fail --location --output "${ANTLR4_JAR}" \
            "https://www.antlr.org/download/antlr-${ANTLR_VERSION}-complete.jar"
          echo "${ANTLR_JAR_SHA256}  ${ANTLR4_JAR}" | sha256sum -c -

      - name: Fetch JavaScript grammar
        run: |
          set -euxo pipefail
          git clone --filter=blob:none --no-checkout \
            https://github.com/antlr/grammars-v4.git "${GRAMMARS_V4}"
          git -C "${GRAMMARS_V4}" sparse-checkout init --cone
          git -C "${GRAMMARS_V4}" sparse-checkout set javascript/javascript
          git -C "${GRAMMARS_V4}" checkout "${GRAMMARS_V4_SHA}"

      - name: Run JavaScript parity smoke
        run: tests/javascript-parity/run.sh