mirror of
https://github.com/protocolbuffers/protobuf
synced 2026-08-26 02:23:14 -04:00
4f9e41767a
This represents the future direction of protobuf, replacing proto2/proto3 syntax with editions. These will enable more incremental evolution of protobuf APIs through features, which are individual behaviors (such as whether field presence is explicit or implicit). For more details see https://protobuf.dev/editions/overview/. This PR contains a working implementation of editions for the protoc frontend and C++ code generation, along with various infrastructure improvements to support it. It gives early access for anyone who wants to a preview of editions, but has no effect on proto2/proto3 syntax. It is flag-guarded behind the `--experimental_editions` flag, and is an experimental feature with no guarantees. PiperOrigin-RevId: 544805690
116 lines
3.2 KiB
Bash
Executable file
116 lines
3.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Run this script to regenerate descriptor.pb.{h,cc} after the protocol
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# compiler changes. Since these files are compiled into the protocol compiler
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# itself, they cannot be generated automatically by a make rule. "make check"
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# will fail if these files do not match what the protocol compiler would
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# generate.
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#
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# HINT: Flags passed to generate_descriptor_proto.sh will be passed directly
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# to bazel when building protoc. This is particularly useful for passing
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# -j4 to run 4 jobs simultaneously.
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if test ! -e src/google/protobuf/stubs/common.h; then
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cat >&2 << __EOF__
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Could not find source code. Make sure you are running this script from the
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root of the distribution tree.
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__EOF__
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exit 1
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fi
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cd src
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declare -a RUNTIME_PROTO_FILES=(\
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google/protobuf/any.proto \
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google/protobuf/api.proto \
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google/protobuf/cpp_features.proto \
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google/protobuf/descriptor.proto \
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google/protobuf/duration.proto \
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google/protobuf/empty.proto \
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google/protobuf/field_mask.proto \
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google/protobuf/source_context.proto \
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google/protobuf/struct.proto \
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google/protobuf/timestamp.proto \
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google/protobuf/type.proto \
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google/protobuf/wrappers.proto)
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declare -a COMPILER_PROTO_FILES=(\
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google/protobuf/compiler/plugin.proto)
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CORE_PROTO_IS_CORRECT=0
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PROCESS_ROUND=1
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BOOTSTRAP_PROTOC=""
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while [ $# -gt 0 ]; do
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case $1 in
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--bootstrap_protoc)
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BOOTSTRAP_PROTOC=$2
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shift 2
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;;
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*)
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break
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;;
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esac
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shift
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done
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TMP=$(mktemp -d)
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echo "Updating descriptor protos..."
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while [ $CORE_PROTO_IS_CORRECT -ne 1 ]
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do
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echo "Round $PROCESS_ROUND"
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CORE_PROTO_IS_CORRECT=1
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if [ "$BOOTSTRAP_PROTOC" != "" ]; then
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PROTOC=$BOOTSTRAP_PROTOC
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BOOTSTRAP_PROTOC=""
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else
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${BAZEL:-bazel} ${BAZEL_STARTUP_FLAGS:-} build $@ //:protoc ${BAZEL_FLAGS:-}
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if test $? -ne 0; then
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echo "Failed to build protoc."
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exit 1
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fi
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PROTOC="../bazel-bin/protoc"
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fi
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$PROTOC --cpp_out=dllexport_decl=PROTOBUF_EXPORT:$TMP ${RUNTIME_PROTO_FILES[@]} && \
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$PROTOC --cpp_out=dllexport_decl=PROTOC_EXPORT:$TMP ${COMPILER_PROTO_FILES[@]}
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for PROTO_FILE in ${RUNTIME_PROTO_FILES[@]} ${COMPILER_PROTO_FILES[@]}; do
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BASE_NAME=${PROTO_FILE%.*}
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diff ${BASE_NAME}.pb.h $TMP/${BASE_NAME}.pb.h > /dev/null
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if test $? -ne 0; then
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CORE_PROTO_IS_CORRECT=0
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fi
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diff ${BASE_NAME}.pb.cc $TMP/${BASE_NAME}.pb.cc > /dev/null
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if test $? -ne 0; then
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CORE_PROTO_IS_CORRECT=0
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fi
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done
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# Only override the output if the files are different to avoid re-compilation
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# of the protoc.
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if [ $CORE_PROTO_IS_CORRECT -ne 1 ]; then
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for PROTO_FILE in ${RUNTIME_PROTO_FILES[@]} ${COMPILER_PROTO_FILES[@]}; do
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BASE_NAME=${PROTO_FILE%.*}
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mv $TMP/${BASE_NAME}.pb.h ${BASE_NAME}.pb.h
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mv $TMP/${BASE_NAME}.pb.cc ${BASE_NAME}.pb.cc
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done
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fi
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PROCESS_ROUND=$((PROCESS_ROUND + 1))
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done
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cd ..
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if test -x objectivec/generate_well_known_types.sh; then
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echo "Generating messages for objc."
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objectivec/generate_well_known_types.sh $@
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fi
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if test -x csharp/generate_protos.sh; then
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echo "Generating messages for C#."
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csharp/generate_protos.sh $@
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fi
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if test -x php/generate_descriptor_protos.sh; then
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echo "Generating messages for PHP."
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php/generate_descriptor_protos.sh $@
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fi
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