ossfuzz: Generate antlr4 runtime deps

scripts/ci/build_ossfuzz.sh

@@ -1,15 +1,55 @@
 #!/usr/bin/env bash
-set -e
+set -ex
 
-ROOTDIR="$(dirname "$0")/../.."
+ROOTDIR="/root/project"
 BUILDDIR="${ROOTDIR}/build"
+mkdir -p "${BUILDDIR}" && mkdir -p "$BUILDDIR/deps"
 
-mkdir -p "${BUILDDIR}"
-cd "${BUILDDIR}"
+ANTLRJAR="${ROOTDIR}/build/deps/antlr4.8.jar"
+ANTLRJAR_URI="https://www.antlr.org/download/antlr-4.8-complete.jar"
 
-protoc --proto_path=../test/tools/ossfuzz yulProto.proto --cpp_out=../test/tools/ossfuzz
-protoc --proto_path=../test/tools/ossfuzz abiV2Proto.proto --cpp_out=../test/tools/ossfuzz
-protoc --proto_path=../test/tools/ossfuzz solProto.proto --cpp_out=../test/tools/ossfuzz
-cmake .. -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE:-Release}" -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/libfuzzer.cmake
+download_antlr4()
+{
+  if [[ ! -e "${ANTLRJAR}" ]]
+  then
+    wget -O "${ANTLRJAR}" "${ANTLRJAR_URI}"
+  fi
+}
 
-make ossfuzz ossfuzz_proto ossfuzz_abiv2 -j 4
+generate_protobuf_bindings()
+{
+  cd "${ROOTDIR}"/test/tools/ossfuzz
+  # Generate protobuf C++ bindings
+  for protoName in yul abiV2 sol;
+  do
+    protoc "${protoName}"Proto.proto --cpp_out .
+  done
+}
+
+generate_antlr4_bindings()
+{
+  cd "${ROOTDIR}"
+  # Replace boolean with bool to suit c++ syntax
+  sed -i 's/boolean /bool /g' docs/grammar/Solidity.g4
+  # Generate antlr4 visitor/parser/lexer c++ bindings
+  java -jar "${ANTLRJAR}" -Dlanguage=Cpp \
+    -Xexact-output-dir -package solidity::test::fuzzer -o test/tools/ossfuzz \
+    -no-listener -visitor docs/grammar/SolidityLexer.g4 docs/grammar/Solidity.g4
+  # Delete unnecessary autogen files
+  rm -f "${ROOTDIR}"/test/tools/ossfuzz/Solidity*Visitor.cpp \
+    "${ROOTDIR}"/test/tools/ossfuzz/Solidity*.interp \
+    "${ROOTDIR}"/test/tools/ossfuzz/Solidity*.tokens
+}
+
+build_fuzzers()
+{
+  cd "${BUILDDIR}"
+  cmake .. -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE:-Release}" \
+    -DCMAKE_TOOLCHAIN_FILE="${ROOTDIR}"/cmake/toolchains/libfuzzer.cmake
+  make ossfuzz ossfuzz_proto ossfuzz_abiv2 -j 4
+}
+
+download_antlr4
+generate_protobuf_bindings
+generate_antlr4_bindings
+build_fuzzers