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|
// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#include "google/protobuf/compiler/hpb/gen_repeated_fields.h"
#include <string>
#include <vector>
#include "google/protobuf/descriptor.pb.h"
#include "absl/strings/string_view.h"
#include "google/protobuf/compiler/hpb/context.h"
#include "google/protobuf/compiler/hpb/gen_accessors.h"
#include "google/protobuf/compiler/hpb/gen_enums.h"
#include "google/protobuf/compiler/hpb/gen_extensions.h"
#include "google/protobuf/compiler/hpb/gen_utils.h"
#include "google/protobuf/compiler/hpb/names.h"
#include "google/protobuf/descriptor.h"
#include "upb_generator/c/names.h"
#include "upb_generator/common.h"
#include "upb_generator/file_layout.h"
namespace google::protobuf::hpb_generator {
namespace protobuf = ::proto2;
// Adds using accessors to reuse base Access class members from a Proxy/CProxy.
void WriteRepeatedFieldUsingAccessors(const protobuf::FieldDescriptor* field,
absl::string_view class_name,
absl::string_view resolved_field_name,
Context& ctx, bool read_only) {
if (field->cpp_type() == protobuf::FieldDescriptor::CPPTYPE_MESSAGE) {
ctx.EmitLegacy(
R"cc(
using $0Access::$1;
using $0Access::$1_size;
)cc",
class_name, resolved_field_name);
if (!read_only) {
ctx.EmitLegacy(
R"cc(
using $0Access::add_$1;
using $0Access::add_alias_$1;
using $0Access::mutable_$1;
)cc",
class_name, resolved_field_name);
}
} else {
ctx.EmitLegacy(
R"cc(
using $0Access::$1;
using $0Access::$1_size;
)cc",
class_name, resolved_field_name);
if (!read_only) {
ctx.EmitLegacy(
R"cc(
using $0Access::add_$1;
using $0Access::mutable_$1;
using $0Access::resize_$1;
using $0Access::set_$1;
)cc",
class_name, resolved_field_name);
}
}
}
void WriteRepeatedFieldsInMessageHeader(const protobuf::Descriptor* desc,
const protobuf::FieldDescriptor* field,
absl::string_view resolved_field_name,
absl::string_view resolved_upbc_name,
Context& ctx) {
ctx.EmitLegacy(
R"cc(
inline size_t $1_size() const {
size_t len;
$0_$2(msg_, &len);
return len;
}
)cc",
upb::generator::CApiMessageType(desc->full_name()), resolved_field_name,
resolved_upbc_name);
if (field->cpp_type() == protobuf::FieldDescriptor::CPPTYPE_MESSAGE) {
ctx.EmitLegacy(
R"cc(
$1 $2(size_t index) const;
const ::hpb::RepeatedField<const $4>::CProxy $2() const;
::hpb::Ptr<::hpb::RepeatedField<$4>> mutable_$2();
absl::StatusOr<$0> add_$2();
/**
* Re-points submsg of repeated field to given target.
*
* REQUIRES: both messages must be in the same arena.
*/
bool add_alias_$2($0 target);
$0 mutable_$2(size_t index) const;
)cc",
MessagePtrConstType(field, /* const */ false), // $0
MessagePtrConstType(field, /* const */ true), // $1
resolved_field_name, // $2
resolved_upbc_name, // $3
MessageBaseType(field, /* maybe_const */ false) // $4
);
} else if (field->cpp_type() == protobuf::FieldDescriptor::CPPTYPE_STRING) {
ctx.EmitLegacy(
R"cc(
$0 $1(size_t index) const;
const ::hpb::RepeatedField<$0>::CProxy $1() const;
::hpb::Ptr<::hpb::RepeatedField<$0>> mutable_$1();
bool add_$1($0 val);
void set_$1(size_t index, $0 val);
bool resize_$1(size_t len);
)cc",
CppConstType(field), resolved_field_name);
} else {
ctx.EmitLegacy(
R"cc(
$0 $1(size_t index) const;
const ::hpb::RepeatedField<$0>::CProxy $1() const;
::hpb::Ptr<::hpb::RepeatedField<$0>> mutable_$1();
bool add_$1($0 val);
void set_$1(size_t index, $0 val);
bool resize_$1(size_t len);
)cc",
CppConstType(field), resolved_field_name);
}
}
void WriteRepeatedMessageAccessor(const protobuf::Descriptor* desc,
const protobuf::FieldDescriptor* field,
const absl::string_view resolved_field_name,
const absl::string_view class_name,
Context& ctx) {
const char arena_expression[] = "arena_";
absl::string_view upbc_name = field->name();
ctx.EmitLegacy(
R"cc(
$1 $0::$2(size_t index) const {
size_t len;
auto* ptr = $3_$5(msg_, &len);
assert(index < len);
return ::hpb::interop::upb::MakeCHandle<$4>(
(upb_Message*)*(ptr + index), arena_);
}
)cc",
class_name, MessagePtrConstType(field, /* is_const */ true),
resolved_field_name, upb::generator::CApiMessageType(desc->full_name()),
MessageBaseType(field, /* maybe_const */ false), upbc_name);
ctx.EmitLegacy(
R"cc(
absl::StatusOr<$1> $0::add_$2() {
auto new_msg = $3_add_$6(msg_, $5);
if (!new_msg) {
return ::hpb::MessageAllocationError();
}
return hpb::interop::upb::MakeHandle<$4>((upb_Message *)new_msg, $5);
}
bool $0::add_alias_$2($1 target) {
ABSL_CHECK(upb_Arena_IsFused(arena_, hpb::interop::upb::GetArena(target)));
size_t size = 0;
$3_$2(msg_, &size);
auto elements = $3_resize_$2(msg_, size + 1, arena_);
if (!elements) {
return false;
}
elements[size] = ($9 *)hpb::interop::upb::GetMessage(target);
return true;
}
)cc",
class_name, MessagePtrConstType(field, /* const */ false),
resolved_field_name, upb::generator::CApiMessageType(desc->full_name()),
MessageBaseType(field, /* maybe_const */ false), arena_expression,
upbc_name, ClassName(desc), field->index(),
upb::generator::CApiMessageType(field->message_type()->full_name()));
ctx.EmitLegacy(
R"cc(
$1 $0::mutable_$2(size_t index) const {
size_t len;
auto* ptr = $3_$6(msg_, &len);
assert(index < len);
return hpb::interop::upb::MakeHandle<$4>((upb_Message*)*(ptr + index), $5);
}
)cc",
class_name, MessagePtrConstType(field, /* is_const */ false),
resolved_field_name, upb::generator::CApiMessageType(desc->full_name()),
MessageBaseType(field, /* maybe_const */ false), arena_expression,
upbc_name);
ctx.EmitLegacy(
R"cc(
const ::hpb::RepeatedField<const $1>::CProxy $0::$2() const {
size_t size;
const upb_Array* arr = _$3_$4_$5(msg_, &size);
return ::hpb::RepeatedField<const $1>::CProxy(arr, arena_);
};
::hpb::Ptr<::hpb::RepeatedField<$1>> $0::mutable_$2() {
size_t size;
upb_Array* arr = _$3_$4_$6(msg_, &size, arena_);
return ::hpb::RepeatedField<$1>::Proxy(arr, arena_);
}
)cc",
class_name, // $0
MessageBaseType(field, /* maybe_const */ false), // $1
resolved_field_name, // $2
upb::generator::CApiMessageType(desc->full_name()), // $3
upbc_name, // $4
upb::generator::kRepeatedFieldArrayGetterPostfix, // $5
upb::generator::kRepeatedFieldMutableArrayGetterPostfix // $6
);
}
void WriteRepeatedStringAccessor(const protobuf::Descriptor* desc,
const protobuf::FieldDescriptor* field,
const absl::string_view resolved_field_name,
const absl::string_view class_name,
Context& ctx) {
absl::string_view upbc_name = field->name();
ctx.EmitLegacy(
R"cc(
$1 $0::$2(size_t index) const {
size_t len;
auto* ptr = $3_mutable_$4(msg_, &len);
assert(index < len);
return hpb::interop::upb::FromUpbStringView(*(ptr + index));
}
)cc",
class_name, CppConstType(field), resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
bool $0::resize_$1(size_t len) {
return $2_resize_$3(msg_, len, arena_);
}
)cc",
class_name, resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
bool $0::add_$2($1 val) {
return $3_add_$4(msg_,
hpb::interop::upb::CopyToUpbStringView(val, arena_),
arena_);
}
)cc",
class_name, CppConstType(field), resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
void $0::set_$2(size_t index, $1 val) {
size_t len;
auto* ptr = $3_mutable_$4(msg_, &len);
assert(index < len);
*(ptr + index) = hpb::interop::upb::CopyToUpbStringView(val, arena_);
}
)cc",
class_name, CppConstType(field), resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
const ::hpb::RepeatedField<$1>::CProxy $0::$2() const {
size_t size;
const upb_Array* arr = _$3_$4_$5(msg_, &size);
return ::hpb::RepeatedField<$1>::CProxy(arr, arena_);
};
::hpb::Ptr<::hpb::RepeatedField<$1>> $0::mutable_$2() {
size_t size;
upb_Array* arr = _$3_$4_$6(msg_, &size, arena_);
return ::hpb::RepeatedField<$1>::Proxy(arr, arena_);
}
)cc",
class_name, // $0
CppConstType(field), // $1
resolved_field_name, // $2
upb::generator::CApiMessageType(desc->full_name()), // $3
upbc_name, // $4
upb::generator::kRepeatedFieldArrayGetterPostfix, // $5
upb::generator::kRepeatedFieldMutableArrayGetterPostfix // $6
);
}
void WriteRepeatedScalarAccessor(const protobuf::Descriptor* desc,
const protobuf::FieldDescriptor* field,
const absl::string_view resolved_field_name,
const absl::string_view class_name,
Context& ctx) {
absl::string_view upbc_name = field->name();
ctx.EmitLegacy(
R"cc(
$1 $0::$2(size_t index) const {
size_t len;
auto* ptr = $3_mutable_$4(msg_, &len);
assert(index < len);
return *(ptr + index);
}
)cc",
class_name, CppConstType(field), resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
bool $0::resize_$1(size_t len) {
return $2_resize_$3(msg_, len, arena_);
}
)cc",
class_name, resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
bool $0::add_$2($1 val) { return $3_add_$4(msg_, val, arena_); }
)cc",
class_name, CppConstType(field), resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
void $0::set_$2(size_t index, $1 val) {
size_t len;
auto* ptr = $3_mutable_$4(msg_, &len);
assert(index < len);
*(ptr + index) = val;
}
)cc",
class_name, CppConstType(field), resolved_field_name,
upb::generator::CApiMessageType(desc->full_name()), upbc_name);
ctx.EmitLegacy(
R"cc(
const ::hpb::RepeatedField<$1>::CProxy $0::$2() const {
size_t size;
const upb_Array* arr = _$3_$4_$5(msg_, &size);
return ::hpb::RepeatedField<$1>::CProxy(arr, arena_);
};
::hpb::Ptr<::hpb::RepeatedField<$1>> $0::mutable_$2() {
size_t size;
upb_Array* arr = _$3_$4_$6(msg_, &size, arena_);
return ::hpb::RepeatedField<$1>::Proxy(arr, arena_);
}
)cc",
class_name, // $0
CppConstType(field), // $1
resolved_field_name, // $2
upb::generator::CApiMessageType(desc->full_name()), // $3
upbc_name, // $4
upb::generator::kRepeatedFieldArrayGetterPostfix, // $5
upb::generator::kRepeatedFieldMutableArrayGetterPostfix // $6
);
}
} // namespace protobuf
} // namespace google::hpb_generator
|
