# JRuby verification image for RBS. # # RBS can’t load its MRI C extension on JRuby, so it parses through a # WebAssembly build of the parser (see lib/rbs/wasm and docs/wasm_serialization.md). # This single-stage image installs the WASI SDK, compiles rbs_parser.wasm and # downloads the Chicory/ASM jars into ~/.m2 (via jar-dependencies), then runs the # test suite on JRuby. It mirrors .github/workflows/jruby.yml but is self-contained. # # docker build -f Dockerfile.jruby -t rbs-jruby . # docker run –rm rbs-jruby # run the test suite # docker run –rm -e RBS_PLATFORM=java rbs-jruby \ # gem build rbs.gemspec # build the -java gem # # Bundler is intentionally not used: the development Gemfile pulls in CRuby-only # C extensions (bigdecimal, stackprof, …) that cannot build on JRuby. The few # gems the suite needs are installed directly, exactly as the CI does.

FROM jruby:10.1.1.0-jdk21

# Keep in sync with .github/workflows/wasm.yml and .github/workflows/jruby.yml. ARG WASI_SDK_VERSION=33 ARG WASI_SDK_RELEASE=33.0

# build-essential supplies cc/make: on JRuby the prism gem builds libprism.so # (loaded via FFI) instead of an MRI C extension, so it needs a C toolchain. RUN apt-get update \

&& apt-get install -y --no-install-recommends git curl ca-certificates build-essential \
&& rm -rf /var/lib/apt/lists/*

# The WASI SDK provides clang, the wasi-libc sysroot and the wasm32 compiler-rt # builtins that ‘rake wasm:build` needs to compile src/**/*.c to WebAssembly. RUN set -eux; \

case "$(uname -m)" in \
  x86_64 | amd64)  wasi_arch=x86_64 ;; \
  aarch64 | arm64) wasi_arch=arm64  ;; \
  *) echo "unsupported arch: $(uname -m)" >&2; exit 1 ;; \
esac; \
mkdir -p /opt/wasi-sdk; \
curl -fsSL "https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION}/wasi-sdk-${WASI_SDK_RELEASE}-${wasi_arch}-linux.tar.gz" \
  | tar xz --strip-components=1 -C /opt/wasi-sdk

ENV WASI_SDK_PATH=/opt/wasi-sdk

# Runtime/test gems the suite needs on JRuby (same set as the jruby.yml CI). RUN gem install prism rake rake-compiler test-unit rdoc rspec minitest json-schema pry –no-document

WORKDIR /rbs COPY . .

# Compile rbs_parser.wasm (clang is a subprocess, so the build is engine # independent) and download the Chicory + ASM jars into ~/.m2 via jar-dependencies. RUN rake wasm:jruby_setup wasm:install_jars

CMD [“rake”, “test”]