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Use Emit instead of format for extension code gen.

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PiperOrigin-RevId: 578983008
pull/14591/head
Protobuf Team Bot 1 year ago committed by Copybara-Service
parent da7245ca0b
commit 1c549200ff
6 changed files with 143 additions and 97 deletions
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  1. 184
      src/google/protobuf/compiler/cpp/extension.cc
  2. 4
      src/google/protobuf/compiler/cpp/extension.h
  3. 6
      src/google/protobuf/compiler/java/java_features.pb.cc
  4. 5
      src/google/protobuf/compiler/java/java_features.pb.h
  5. 8
      src/google/protobuf/cpp_features.pb.cc
  6. 5
      src/google/protobuf/cpp_features.pb.h

184
src/google/protobuf/compiler/cpp/extension.cc
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@ -11,9 +11,12 @@
#include "google/protobuf/compiler/cpp/extension.h"
#include <string>
#include "absl/strings/str_cat.h"
#include "absl/strings/str_replace.h"
#include "google/protobuf/compiler/cpp/helpers.h"
#include "google/protobuf/compiler/cpp/options.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/descriptor.pb.h"
#include "google/protobuf/io/printer.h"
@ -77,97 +80,134 @@ ExtensionGenerator::ExtensionGenerator(const FieldDescriptor* descriptor,
variables_["scope"] = scope;
variables_["scoped_name"] = ExtensionName(descriptor_);
variables_["number"] = absl::StrCat(descriptor_->number());
bool add_verify_fn =
// Only verify msgs.
descriptor_->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE &&
// Options say to verify.
ShouldVerify(descriptor_->message_type(), options_, scc_analyzer_) &&
ShouldVerify(descriptor_->containing_type(), options_, scc_analyzer_);
variables_["verify_fn"] =
add_verify_fn
? absl::StrCat("&", FieldMessageTypeName(descriptor_, options_),
"::InternalVerify")
: "nullptr";
}
ExtensionGenerator::~ExtensionGenerator() {}
ExtensionGenerator::~ExtensionGenerator() = default;
bool ExtensionGenerator::IsScoped() const {
return descriptor_->extension_scope() != nullptr;
}
void ExtensionGenerator::GenerateDeclaration(io::Printer* printer) const {
Formatter format(printer, variables_);
// If this is a class member, it needs to be declared "static". Otherwise,
// it needs to be "extern". In the latter case, it also needs the DLL
// export/import specifier.
std::string qualifier;
if (!IsScoped()) {
qualifier = "extern";
if (!options_.dllexport_decl.empty()) {
qualifier = absl::StrCat(options_.dllexport_decl, " ", qualifier);
}
} else {
qualifier = "static";
}
format(
"static const int $constant_name$ = $number$;\n"
"$1$ ::$proto_ns$::internal::ExtensionIdentifier< $extendee$,\n"
" ::$proto_ns$::internal::$type_traits$, $field_type$, $packed$ >\n"
" ${2$$name$$}$;\n",
qualifier, descriptor_);
void ExtensionGenerator::GenerateDeclaration(io::Printer* p) const {
auto var = p->WithVars(variables_);
auto annotate = p->WithAnnotations({{"name", descriptor_}});
p->Emit({{"qualifier",
// If this is a class member, it needs to be declared "static".
// Otherwise, it needs to be "extern". In the latter case, it
// also needs the DLL export/import specifier.
IsScoped() ? "static"
: options_.dllexport_decl.empty()
? "extern"
: absl::StrCat(options_.dllexport_decl, " extern")}},
R"cc(
static const int $constant_name$ = $number$;
$qualifier$ ::$proto_ns$::internal::ExtensionIdentifier<
$extendee$, ::$proto_ns$::internal::$type_traits$, $field_type$,
$packed$>
$name$;
)cc");
}
void ExtensionGenerator::GenerateDefinition(io::Printer* printer) {
Formatter format(printer, variables_);
std::string default_str;
// If this is a class member, it needs to be declared in its class scope.
void ExtensionGenerator::GenerateDefinition(io::Printer* p) {
auto vars = p->WithVars(variables_);
auto generate_default_string = [&] {
if (descriptor_->cpp_type() == FieldDescriptor::CPPTYPE_STRING) {
// We need to declare a global string which will contain the default value.
// We cannot declare it at class scope because that would require exposing
// it in the header which would be annoying for other reasons. So we
// replace :: with _ in the name and declare it as a global.
default_str =
absl::StrReplaceAll(variables_["scoped_name"], {{"::", "_"}}) +
// We need to declare a global string which will contain the default
// value. We cannot declare it at class scope because that would require
// exposing it in the header which would be annoying for other reasons. So
// we replace :: with _ in the name and declare it as a global.
return absl::StrReplaceAll(variables_["scoped_name"], {{"::", "_"}}) +
"_default";
format("const std::string $1$($2$);\n", default_str,
DefaultValue(options_, descriptor_));
} else if (descriptor_->message_type()) {
// We have to initialize the default instance for extensions at registration
// time.
default_str = absl::StrCat(FieldMessageTypeName(descriptor_, options_),
// We have to initialize the default instance for extensions at
// registration time.
return absl::StrCat(FieldMessageTypeName(descriptor_, options_),
"::default_instance()");
} else {
default_str = DefaultValue(options_, descriptor_);
return DefaultValue(options_, descriptor_);
}
// Likewise, class members need to declare the field constant variable.
if (IsScoped()) {
format(
"#if !defined(_MSC_VER) || (_MSC_VER >= 1900 && _MSC_VER < 1912)\n"
"const int $scope$$constant_name$;\n"
"#endif\n");
};
auto local_var = p->WithVars({
{"default_str", generate_default_string()},
{"default_val", DefaultValue(options_, descriptor_)},
{"message_type", descriptor_->message_type() != nullptr
? FieldMessageTypeName(descriptor_, options_)
: ""},
});
p->Emit(
{
{"declare_default_str",
[&] {
if (descriptor_->cpp_type() != FieldDescriptor::CPPTYPE_STRING)
return;
// If this is a class member, it needs to be declared in its class
// scope.
p->Emit(R"cc(
const std::string $default_str$($default_val$);
)cc");
}},
{"declare_const_var",
[&] {
if (!IsScoped()) return;
// Likewise, class members need to declare the field constant
// variable.
p->Emit(R"cc(
#if !defined(_MSC_VER) || (_MSC_VER >= 1900 && _MSC_VER < 1912)
const int $scope$$constant_name$;
#endif
)cc");
}},
{"define_extension_id",
[&] {
if (IsLazilyInitializedFile(descriptor_->file()->name())) {
p->Emit(R"cc(
PROTOBUF_CONSTINIT$ dllexport_decl$
PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::$proto_ns$::internal::
ExtensionIdentifier<
$extendee$, ::$proto_ns$::internal::$type_traits$,
$field_type$, $packed$>
$scoped_name$($constant_name$);
)cc");
return;
}
if (IsLazilyInitializedFile(descriptor_->file()->name())) {
format(
"PROTOBUF_CONSTINIT$ dllexport_decl$ "
"PROTOBUF_ATTRIBUTE_INIT_PRIORITY2\n"
"::$proto_ns$::internal::ExtensionIdentifier< $extendee$,\n"
" ::$proto_ns$::internal::$type_traits$, $field_type$, $packed$>\n"
" $scoped_name$($constant_name$);\n");
bool should_verify =
// Only verify msgs.
descriptor_->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE &&
// Options say to verify.
ShouldVerify(descriptor_->message_type(), options_,
scc_analyzer_) &&
ShouldVerify(descriptor_->containing_type(), options_,
scc_analyzer_);
if (should_verify) {
p->Emit(R"cc(
$dllexport_decl $PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::
$proto_ns$::internal::ExtensionIdentifier<
$extendee$, ::$proto_ns$::internal::$type_traits$,
$field_type$, $packed$>
$scoped_name$($constant_name$, $default_str$,
&$message_type$::InternalVerify);
)cc");
} else {
format(
"$dllexport_decl $PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 "
"::$proto_ns$::internal::ExtensionIdentifier< $extendee$,\n"
" ::$proto_ns$::internal::$type_traits$, $field_type$, $packed$>\n"
" $scoped_name$($constant_name$, $1$, $verify_fn$);\n",
default_str);
p->Emit(R"cc(
$dllexport_decl $PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::
$proto_ns$::internal::ExtensionIdentifier<
$extendee$, ::$proto_ns$::internal::$type_traits$,
$field_type$, $packed$>
$scoped_name$($constant_name$, $default_str$, nullptr);
)cc");
}
}},
},
R"cc(
$declare_default_str$;
$declare_const_var$;
$define_extension_id$;
)cc");
}
} // namespace cpp

4
src/google/protobuf/compiler/cpp/extension.h
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@ -51,10 +51,10 @@ class PROTOC_EXPORT ExtensionGenerator {
~ExtensionGenerator();
// Header stuff.
void GenerateDeclaration(io::Printer* printer) const;
void GenerateDeclaration(io::Printer* p) const;
// Source file stuff.
void GenerateDefinition(io::Printer* printer);
void GenerateDefinition(io::Printer* p);
bool IsScoped() const;

6
src/google/protobuf/compiler/java/java_features.pb.cc
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@ -375,8 +375,10 @@ void JavaFeatures::InternalSwap(JavaFeatures* PROTOBUF_RESTRICT other) {
&descriptor_table_google_2fprotobuf_2fcompiler_2fjava_2fjava_5ffeatures_2eproto_getter, &descriptor_table_google_2fprotobuf_2fcompiler_2fjava_2fjava_5ffeatures_2eproto_once,
file_level_metadata_google_2fprotobuf_2fcompiler_2fjava_2fjava_5ffeatures_2eproto[0]);
}
PROTOC_EXPORT PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::google::protobuf::internal::ExtensionIdentifier< ::google::protobuf::FeatureSet,
::google::protobuf::internal::MessageTypeTraits< ::pb::JavaFeatures >, 11, false>
PROTOC_EXPORT PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::
google::protobuf::internal::ExtensionIdentifier<
::google::protobuf::FeatureSet, ::google::protobuf::internal::MessageTypeTraits< ::pb::JavaFeatures >,
11, false>
java(kJavaFieldNumber, ::pb::JavaFeatures::default_instance(), nullptr);
// @@protoc_insertion_point(namespace_scope)
} // namespace pb

5
src/google/protobuf/compiler/java/java_features.pb.h
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@ -318,8 +318,9 @@ class PROTOC_EXPORT JavaFeatures final :
static const int kJavaFieldNumber = 1001;
PROTOC_EXPORT extern ::google::protobuf::internal::ExtensionIdentifier< ::google::protobuf::FeatureSet,
::google::protobuf::internal::MessageTypeTraits< ::pb::JavaFeatures >, 11, false >
PROTOC_EXPORT extern ::google::protobuf::internal::ExtensionIdentifier<
::google::protobuf::FeatureSet, ::google::protobuf::internal::MessageTypeTraits< ::pb::JavaFeatures >, 11,
false>
java;
// ===================================================================

8
src/google/protobuf/cpp_features.pb.cc
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@ -298,9 +298,11 @@ void CppFeatures::InternalSwap(CppFeatures* PROTOBUF_RESTRICT other) {
&descriptor_table_google_2fprotobuf_2fcpp_5ffeatures_2eproto_getter, &descriptor_table_google_2fprotobuf_2fcpp_5ffeatures_2eproto_once,
file_level_metadata_google_2fprotobuf_2fcpp_5ffeatures_2eproto[0]);
}
PROTOBUF_CONSTINIT PROTOBUF_EXPORT PROTOBUF_ATTRIBUTE_INIT_PRIORITY2
::google::protobuf::internal::ExtensionIdentifier< ::google::protobuf::FeatureSet,
::google::protobuf::internal::MessageTypeTraits< ::pb::CppFeatures >, 11, false>
PROTOBUF_CONSTINIT PROTOBUF_EXPORT
PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 ::google::protobuf::internal::
ExtensionIdentifier<
::google::protobuf::FeatureSet, ::google::protobuf::internal::MessageTypeTraits< ::pb::CppFeatures >,
11, false>
cpp(kCppFieldNumber);
// @@protoc_insertion_point(namespace_scope)
} // namespace pb

5
src/google/protobuf/cpp_features.pb.h
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@ -253,8 +253,9 @@ class PROTOBUF_EXPORT CppFeatures final :
static const int kCppFieldNumber = 1000;
PROTOBUF_EXPORT extern ::google::protobuf::internal::ExtensionIdentifier< ::google::protobuf::FeatureSet,
::google::protobuf::internal::MessageTypeTraits< ::pb::CppFeatures >, 11, false >
PROTOBUF_EXPORT extern ::google::protobuf::internal::ExtensionIdentifier<
::google::protobuf::FeatureSet, ::google::protobuf::internal::MessageTypeTraits< ::pb::CppFeatures >, 11,
false>
cpp;
// ===================================================================

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