third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/objectivec/DevTools/compile_testing_protos.sh

-#!/bin/bash
-
+#!/bin/bash -eu
 # Invoked by the Xcode projects to build the protos needed for the unittests.
 
-set -eu
-
 readonly OUTPUT_DIR="${PROJECT_DERIVED_FILE_DIR}/protos"
 
+# -----------------------------------------------------------------------------
 # Helper for bailing.
 die() {
   echo "Error: $1"
   exit 2
 }
 
+# -----------------------------------------------------------------------------
 # What to do.
 case "${ACTION}" in
   "")
     # Build, fall thru
     ;;
   "clean")
     rm -rf "${OUTPUT_DIR}"
     exit 0
     ;;
   *)
     die "Unknown action requested: ${ACTION}"
     ;;
 esac
 
-# Move to the top of the protobuf directories.
+# -----------------------------------------------------------------------------
+# Ensure the output dir exists
+mkdir -p "${OUTPUT_DIR}/google/protobuf"
+
+# -----------------------------------------------------------------------------
+# Move to the top of the protobuf directories and ensure there is a protoc
+# binary to use.
 cd "${SRCROOT}/.."
-
 [[ -x src/protoc ]] || \
   die "Could not find the protoc binary; make sure you have built it (objectivec/DevTools/full_mac_build.sh -h)."
 
+# -----------------------------------------------------------------------------
+# See the compiler or proto files have changed.
 RUN_PROTOC=no
 if [[ ! -d "${OUTPUT_DIR}" ]] ; then
   RUN_PROTOC=yes
 else
   # Find the newest input file (protos, compiler, and this script).
   # (these patterns catch some extra stuff, but better to over sample than
   # under)
   readonly NewestInput=$(find \
      src/google/protobuf/*.proto \
      objectivec/Tests/*.proto \
      src/.libs src/*.la src/protoc \
      objectivec/DevTools/compile_testing_protos.sh \
         -type f -print0 \
         | xargs -0 stat -f "%m %N" \
         | sort -n | tail -n1 | cut -f2- -d" ")
   # Find the oldest output file.
   readonly OldestOutput=$(find \
         "${OUTPUT_DIR}" \
-        -type f -print0 \
+        -type f -name "*pbobjc.[hm]" -print0 \
         | xargs -0 stat -f "%m %N" \
         | sort -n -r | tail -n1 | cut -f2- -d" ")
   # If the newest input is newer than the oldest output, regenerate.
   if [[ "${NewestInput}" -nt "${OldestOutput}" ]] ; then
     RUN_PROTOC=yes
   fi
 fi
 
 if [[ "${RUN_PROTOC}" != "yes" ]] ; then
   # Up to date.
   exit 0
 fi
 
-# Ensure the output dir exists
-mkdir -p "${OUTPUT_DIR}/google/protobuf"
+# -----------------------------------------------------------------------------
+# Prune out all the files from previous generations to ensure we only have
+# current ones.
+find "${OUTPUT_DIR}" \
+    -type f -name "*pbobjc.[hm]" -print0 \
+    | xargs -0 rm -rf
+
+# -----------------------------------------------------------------------------
+# Helper to invoke protoc
+compile_protos() {
+  src/protoc                                   \
+    --objc_out="${OUTPUT_DIR}/google/protobuf" \
+    --proto_path=src/google/protobuf/          \
+    --proto_path=src                           \
+    "$@"
+}
+
+# -----------------------------------------------------------------------------
+# Generate most of the proto files that exist in the C++ src tree.  Several
+# are used in the tests, but the extra don't hurt in that they ensure ObjC
+# sources can be generated from them.
 
 CORE_PROTO_FILES=(
+  src/google/protobuf/any_test.proto
   src/google/protobuf/unittest_arena.proto
   src/google/protobuf/unittest_custom_options.proto
   src/google/protobuf/unittest_enormous_descriptor.proto
   src/google/protobuf/unittest_embed_optimize_for.proto
   src/google/protobuf/unittest_empty.proto
   src/google/protobuf/unittest_import.proto
   src/google/protobuf/unittest_import_lite.proto
   src/google/protobuf/unittest_lite.proto
   src/google/protobuf/unittest_mset.proto
   src/google/protobuf/unittest_mset_wire_format.proto
   src/google/protobuf/unittest_no_arena.proto
   src/google/protobuf/unittest_no_arena_import.proto
   src/google/protobuf/unittest_no_generic_services.proto
   src/google/protobuf/unittest_optimize_for.proto
   src/google/protobuf/unittest.proto
   src/google/protobuf/unittest_import_public.proto
   src/google/protobuf/unittest_import_public_lite.proto
   src/google/protobuf/unittest_drop_unknown_fields.proto
   src/google/protobuf/unittest_preserve_unknown_enum.proto
   src/google/protobuf/map_lite_unittest.proto
   src/google/protobuf/map_proto2_unittest.proto
   src/google/protobuf/map_unittest.proto
-)
-
-# The unittest_custom_options.proto extends the messages in descriptor.proto
-# so we build it in to test extending in general. The library doesn't provide
-# a descriptor as it doesn't use the classes/enums.
-CORE_PROTO_FILES+=(
+  # The unittest_custom_options.proto extends the messages in descriptor.proto
+  # so we build it in to test extending in general. The library doesn't provide
+  # a descriptor as it doesn't use the classes/enums.
   src/google/protobuf/descriptor.proto
 )
 
-compile_proto() {
-  src/protoc                                   \
-    --objc_out="${OUTPUT_DIR}/google/protobuf" \
-    --proto_path=src/google/protobuf/          \
-    --proto_path=src                           \
-    $*
-}
-
+# Note: there is overlap in package.Message names between some of the test
+# files, so they can't be generated all at once. This works because the overlap
+# isn't linked into a single binary.
 for a_proto in "${CORE_PROTO_FILES[@]}" ; do
-  compile_proto "${a_proto}"
+  compile_protos "${a_proto}"
 done
 
-OBJC_PROTO_FILES=(
-  objectivec/Tests/unittest_cycle.proto
-  objectivec/Tests/unittest_runtime_proto2.proto
-  objectivec/Tests/unittest_runtime_proto3.proto
-  objectivec/Tests/unittest_objc.proto
+# -----------------------------------------------------------------------------
+# Generate the Objective C specific testing protos.
+compile_protos \
+  --proto_path="objectivec/Tests" \
+  objectivec/Tests/unittest_cycle.proto \
+  objectivec/Tests/unittest_deprecated.proto \
+  objectivec/Tests/unittest_deprecated_file.proto \
+  objectivec/Tests/unittest_extension_chain_a.proto \
+  objectivec/Tests/unittest_extension_chain_b.proto \
+  objectivec/Tests/unittest_extension_chain_c.proto \
+  objectivec/Tests/unittest_extension_chain_d.proto \
+  objectivec/Tests/unittest_extension_chain_e.proto \
+  objectivec/Tests/unittest_extension_chain_f.proto \
+  objectivec/Tests/unittest_extension_chain_g.proto \
+  objectivec/Tests/unittest_runtime_proto2.proto \
+  objectivec/Tests/unittest_runtime_proto3.proto \
+  objectivec/Tests/unittest_objc.proto \
   objectivec/Tests/unittest_objc_startup.proto
-)
-
-for a_proto in "${OBJC_PROTO_FILES[@]}" ; do
-  compile_proto --proto_path="objectivec/Tests" "${a_proto}"
-done