Merge pull request #2517 from acozzette/js-embed

Auto-generate well_known_types_embed.cc

.gitignore

@@ -47,6 +47,7 @@ any_test.pb.*
 map*unittest.pb.*
 unittest*.pb.*
 cpp_test*.pb.*
+src/google/protobuf/compiler/js/well_known_types_embed.cc
 src/google/protobuf/util/**/*.pb.cc
 src/google/protobuf/util/**/*.pb.h
 
@@ -60,6 +61,7 @@ python/build/
 python/google/protobuf/compiler/
 python/google/protobuf/util/
 
+src/js_embed
 src/protoc
 src/unittest_proto_middleman
 

cmake/libprotoc.cmake

@@ -94,6 +94,18 @@ set(libprotoc_files
   ${protobuf_source_dir}/src/google/protobuf/compiler/zip_writer.cc
 )
 
+set(js_well_known_types_sources,
+  ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types/any.js
+  ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types/struct.js
+  ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types/timestamp.js
+)
+add_executable(js_embed ${protobuf_source_dir}/src/google/protobuf/compiler/js/embed.cc)
+add_custom_command(
+  OUTPUT ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types_embed.cc
+  DEPENDS js_embed ${js_well_known_types_sources}
+  COMMAND js_embed ${js_well_known_types_sources} > ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types_embed.cc
+)
+
 add_library(libprotoc ${protobuf_SHARED_OR_STATIC}
   ${libprotoc_files})
 target_link_libraries(libprotoc libprotobuf)

cmake/tests.cmake

@@ -214,4 +214,5 @@ target_link_libraries(lite-arena-test libprotobuf-lite gmock_main)
 
 add_custom_target(check
   COMMAND tests
+  DEPENDS tests test_plugin
   WORKING_DIRECTORY ${protobuf_source_dir})

src/Makefile.am

@@ -483,10 +483,20 @@ libprotoc_la_SOURCES =                                         \
   google/protobuf/compiler/csharp/csharp_wrapper_field.cc      \
   google/protobuf/compiler/csharp/csharp_wrapper_field.h
 
-bin_PROGRAMS = protoc
+bin_PROGRAMS = protoc js_embed
 protoc_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la
 protoc_SOURCES = google/protobuf/compiler/main.cc
 
+# The special JS code for the well-known types is linked into the compiler via
+# well_known_types_embed.cc, which is generated from .js source files.
+js_embed_SOURCES = google/protobuf/compiler/js/embed.cc
+js_well_known_types_sources =                                  \
+	google/protobuf/compiler/js/well_known_types/any.js          \
+	google/protobuf/compiler/js/well_known_types/struct.js       \
+	google/protobuf/compiler/js/well_known_types/timestamp.js
+google/protobuf/compiler/js/well_known_types_embed.cc: js_embed$(EXEEXT) $(js_well_known_types_sources)
+	./js_embed$(EXEEXT) $(js_well_known_types_sources) > $@
+
 # Tests ==============================================================
 
 protoc_inputs =                                                   \
@@ -661,7 +671,7 @@ protoc_outputs =                                                  \
   google/protobuf/util/message_differencer_unittest.pb.cc         \
   google/protobuf/util/message_differencer_unittest.pb.h
 
-BUILT_SOURCES = $(protoc_outputs)
+BUILT_SOURCES = $(protoc_outputs) google/protobuf/compiler/js/well_known_types_embed.cc
 
 if USE_EXTERNAL_PROTOC
 

src/google/protobuf/compiler/js/embed.cc

@@ -48,7 +48,8 @@ static char ToDecimalDigit(int num) {
 static std::string CEscape(const std::string& str) {
   std::string dest;
 
-  for (unsigned char ch : str) {
+  for (int i = 0; i < str.size(); ++i) {
+    unsigned char ch = str[i];
     switch (ch) {
       case '\n': dest += "\\n"; break;
       case '\r': dest += "\\r"; break;
@@ -96,18 +97,16 @@ static void AddFile(const char* name, std::basic_ostream<char>* out) {
 }
 
 int main(int argc, char *argv[]) {
-  auto& out = std::cout;
-
-  out << "#include "
-         "\"google/protobuf/compiler/js/well_known_types_embed.h\"\n";
-  out << "struct FileToc well_known_types_js[] = {\n";
+  std::cout << "#include "
+               "\"google/protobuf/compiler/js/well_known_types_embed.h\"\n";
+  std::cout << "struct FileToc well_known_types_js[] = {\n";
 
   for (int i = 1; i < argc; i++) {
-    AddFile(argv[i], &out);
+    AddFile(argv[i], &std::cout);
   }
 
-  out << "  {NULL, NULL}  // Terminate the list.\n";
-  out << "};\n";
+  std::cout << "  {NULL, NULL}  // Terminate the list.\n";
+  std::cout << "};\n";
 
   return EXIT_SUCCESS;
 }