4401 lines
154 KiB
C++
4401 lines
154 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Author: kenton@google.com (Kenton Varda)
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// Based on original Protocol Buffers design by
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// Sanjay Ghemawat, Jeff Dean, and others.
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#include "google/protobuf/compiler/cpp/message.h"
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#include <algorithm>
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#include <array>
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#include <cmath>
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#include <cstdint>
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#include <functional>
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#include <iterator>
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#include <limits>
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#include <memory>
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#include <type_traits>
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#include <utility>
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#include <vector>
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#include "absl/container/flat_hash_map.h"
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#include "absl/container/flat_hash_set.h"
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#include "absl/log/absl_check.h"
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#include "absl/log/absl_log.h"
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#include "absl/strings/ascii.h"
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#include "absl/strings/escaping.h"
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#include "absl/strings/str_cat.h"
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#include "absl/strings/str_format.h"
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#include "absl/strings/str_join.h"
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#include "absl/strings/string_view.h"
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#include "google/protobuf/compiler/cpp/enum.h"
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#include "google/protobuf/compiler/cpp/extension.h"
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#include "google/protobuf/compiler/cpp/field.h"
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#include "google/protobuf/compiler/cpp/helpers.h"
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#include "google/protobuf/compiler/cpp/names.h"
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#include "google/protobuf/compiler/cpp/padding_optimizer.h"
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#include "google/protobuf/compiler/cpp/parse_function_generator.h"
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#include "google/protobuf/compiler/cpp/tracker.h"
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#include "google/protobuf/descriptor.h"
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#include "google/protobuf/descriptor.pb.h"
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#include "google/protobuf/io/printer.h"
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#include "google/protobuf/wire_format.h"
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// Must be included last.
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#include "google/protobuf/port_def.inc"
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namespace google {
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namespace protobuf {
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namespace compiler {
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namespace cpp {
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namespace {
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using ::google::protobuf::internal::WireFormat;
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using ::google::protobuf::internal::WireFormatLite;
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using ::google::protobuf::internal::cpp::HasHasbit;
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using ::google::protobuf::internal::cpp::Utf8CheckMode;
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using Semantic = ::google::protobuf::io::AnnotationCollector::Semantic;
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using Sub = ::google::protobuf::io::Printer::Sub;
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static constexpr int kNoHasbit = -1;
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// Create an expression that evaluates to
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// "for all i, (_has_bits_[i] & masks[i]) == masks[i]"
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// masks is allowed to be shorter than _has_bits_, but at least one element of
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// masks must be non-zero.
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std::string ConditionalToCheckBitmasks(
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const std::vector<uint32_t>& masks, bool return_success = true,
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absl::string_view has_bits_var = "_impl_._has_bits_") {
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std::vector<std::string> parts;
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for (int i = 0; i < masks.size(); i++) {
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if (masks[i] == 0) continue;
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std::string m = absl::StrCat("0x", absl::Hex(masks[i], absl::kZeroPad8));
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// Each xor evaluates to 0 if the expected bits are present.
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parts.push_back(
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absl::StrCat("((", has_bits_var, "[", i, "] & ", m, ") ^ ", m, ")"));
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}
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ABSL_CHECK(!parts.empty());
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// If we have multiple parts, each expected to be 0, then bitwise-or them.
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std::string result =
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parts.size() == 1
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? parts[0]
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: absl::StrCat("(", absl::StrJoin(parts, "\n | "), ")");
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return result + (return_success ? " == 0" : " != 0");
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}
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void PrintPresenceCheck(const FieldDescriptor* field,
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const std::vector<int>& has_bit_indices, io::Printer* p,
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int* cached_has_word_index) {
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if (!field->options().weak()) {
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int has_bit_index = has_bit_indices[field->index()];
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if (*cached_has_word_index != (has_bit_index / 32)) {
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*cached_has_word_index = (has_bit_index / 32);
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p->Emit({{"index", *cached_has_word_index}},
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R"cc(
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cached_has_bits = $has_bits$[$index$];
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)cc");
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}
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p->Emit({{"mask", absl::StrFormat("0x%08xu", 1u << (has_bit_index % 32))}},
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R"cc(
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if (cached_has_bits & $mask$) {
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)cc");
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} else {
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p->Emit(R"cc(
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if (has_$name$()) {
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)cc");
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}
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}
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struct FieldOrderingByNumber {
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inline bool operator()(const FieldDescriptor* a,
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const FieldDescriptor* b) const {
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return a->number() < b->number();
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}
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};
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// Sort the fields of the given Descriptor by number into a new[]'d array
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// and return it.
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std::vector<const FieldDescriptor*> SortFieldsByNumber(
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const Descriptor* descriptor) {
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std::vector<const FieldDescriptor*> fields(descriptor->field_count());
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for (int i = 0; i < descriptor->field_count(); i++) {
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fields[i] = descriptor->field(i);
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}
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std::sort(fields.begin(), fields.end(), FieldOrderingByNumber());
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return fields;
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}
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// Functor for sorting extension ranges by their "start" field number.
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struct ExtensionRangeSorter {
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bool operator()(const Descriptor::ExtensionRange* left,
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const Descriptor::ExtensionRange* right) const {
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return left->start_number() < right->start_number();
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}
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};
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bool IsPOD(const FieldDescriptor* field) {
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if (field->is_repeated() || field->is_extension()) return false;
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switch (field->cpp_type()) {
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case FieldDescriptor::CPPTYPE_ENUM:
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case FieldDescriptor::CPPTYPE_INT32:
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case FieldDescriptor::CPPTYPE_INT64:
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case FieldDescriptor::CPPTYPE_UINT32:
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case FieldDescriptor::CPPTYPE_UINT64:
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case FieldDescriptor::CPPTYPE_FLOAT:
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case FieldDescriptor::CPPTYPE_DOUBLE:
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case FieldDescriptor::CPPTYPE_BOOL:
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return true;
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case FieldDescriptor::CPPTYPE_STRING:
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return false;
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default:
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return false;
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}
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}
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// Finds runs of fields for which `predicate` is true.
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// RunMap maps from fields that start each run to the number of fields in that
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// run. This is optimized for the common case that there are very few runs in
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// a message and that most of the eligible fields appear together.
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using RunMap = absl::flat_hash_map<const FieldDescriptor*, size_t>;
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RunMap FindRuns(const std::vector<const FieldDescriptor*>& fields,
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const std::function<bool(const FieldDescriptor*)>& predicate) {
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RunMap runs;
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const FieldDescriptor* last_start = nullptr;
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for (auto field : fields) {
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if (predicate(field)) {
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if (last_start == nullptr) {
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last_start = field;
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}
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runs[last_start]++;
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} else {
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last_start = nullptr;
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}
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}
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return runs;
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}
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// Emits an if-statement with a condition that evaluates to true if |field| is
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// considered non-default (will be sent over the wire), for message types
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// without true field presence. Should only be called if
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// !HasHasbit(field).
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bool EmitFieldNonDefaultCondition(io::Printer* p, const std::string& prefix,
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const FieldDescriptor* field) {
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ABSL_CHECK(!HasHasbit(field));
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auto v = p->WithVars({{
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{"prefix", prefix},
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{"name", FieldName(field)},
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}});
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// Merge and serialize semantics: primitive fields are merged/serialized only
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// if non-zero (numeric) or non-empty (string).
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if (!field->is_repeated() && !field->containing_oneof()) {
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if (field->cpp_type() == FieldDescriptor::CPPTYPE_STRING) {
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p->Emit(R"cc(
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if (!$prefix$_internal_$name$().empty()) {
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)cc");
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} else if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
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// Message fields still have has_$name$() methods.
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p->Emit(R"cc(
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if ($prefix$_internal_has_$name$()) {
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)cc");
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} else if (field->cpp_type() == FieldDescriptor::CPPTYPE_FLOAT) {
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p->Emit(R"cc(
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static_assert(sizeof(::uint32_t) == sizeof(float),
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"Code assumes ::uint32_t and float are the same size.");
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float tmp_$name$ = $prefix$_internal_$name$();
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::uint32_t raw_$name$;
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memcpy(&raw_$name$, &tmp_$name$, sizeof(tmp_$name$));
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if (raw_$name$ != 0) {
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)cc");
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} else if (field->cpp_type() == FieldDescriptor::CPPTYPE_DOUBLE) {
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p->Emit(R"cc(
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static_assert(sizeof(::uint64_t) == sizeof(double),
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"Code assumes ::uint64_t and double are the same size.");
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double tmp_$name$ = $prefix$_internal_$name$();
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::uint64_t raw_$name$;
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memcpy(&raw_$name$, &tmp_$name$, sizeof(tmp_$name$));
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if (raw_$name$ != 0) {
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)cc");
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} else {
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p->Emit(R"cc(
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if ($prefix$_internal_$name$() != 0) {
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)cc");
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}
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return true;
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} else if (field->real_containing_oneof()) {
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p->Emit(R"cc(
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if ($has_field$) {
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)cc");
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return true;
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}
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return false;
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}
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bool HasInternalHasMethod(const FieldDescriptor* field) {
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return !HasHasbit(field) &&
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field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE;
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}
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// Collects map entry message type information.
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void CollectMapInfo(
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const Options& options, const Descriptor* descriptor,
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absl::flat_hash_map<absl::string_view, std::string>* variables) {
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ABSL_CHECK(IsMapEntryMessage(descriptor));
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absl::flat_hash_map<absl::string_view, std::string>& vars = *variables;
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const FieldDescriptor* key = descriptor->map_key();
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const FieldDescriptor* val = descriptor->map_value();
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vars["key_cpp"] = PrimitiveTypeName(options, key->cpp_type());
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switch (val->cpp_type()) {
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case FieldDescriptor::CPPTYPE_MESSAGE:
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vars["val_cpp"] = FieldMessageTypeName(val, options);
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break;
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case FieldDescriptor::CPPTYPE_ENUM:
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vars["val_cpp"] = ClassName(val->enum_type(), true);
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break;
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default:
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vars["val_cpp"] = PrimitiveTypeName(options, val->cpp_type());
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}
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vars["key_wire_type"] = absl::StrCat(
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"TYPE_", absl::AsciiStrToUpper(DeclaredTypeMethodName(key->type())));
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vars["val_wire_type"] = absl::StrCat(
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"TYPE_", absl::AsciiStrToUpper(DeclaredTypeMethodName(val->type())));
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}
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// Returns true to make the message serialize in order, decided by the following
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// factors in the order of precedence.
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// --options().message_set_wire_format() == true
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// --the message is in the allowlist (true)
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// --GOOGLE_PROTOBUF_SHUFFLE_SERIALIZE is defined (false)
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// --a ranage of message names that are allowed to stay in order (true)
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bool ShouldSerializeInOrder(const Descriptor* descriptor,
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const Options& options) {
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return true;
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}
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bool IsCrossFileMapField(const FieldDescriptor* field) {
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if (!field->is_map()) {
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return false;
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}
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const Descriptor* d = field->message_type();
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const FieldDescriptor* value = d->FindFieldByNumber(2);
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return IsCrossFileMessage(value);
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}
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bool IsCrossFileMaybeMap(const FieldDescriptor* field) {
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if (IsCrossFileMapField(field)) {
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return true;
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}
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return IsCrossFileMessage(field);
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}
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bool HasNonSplitOptionalString(const Descriptor* desc, const Options& options) {
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for (const auto* field : FieldRange(desc)) {
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if (IsString(field, options) && !field->is_repeated() &&
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!field->real_containing_oneof() && !ShouldSplit(field, options)) {
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return true;
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}
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}
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return false;
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}
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struct FieldChunk {
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FieldChunk(bool has_hasbit, bool is_rarely_present, bool should_split)
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: has_hasbit(has_hasbit),
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is_rarely_present(is_rarely_present),
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should_split(should_split) {}
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bool has_hasbit;
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bool is_rarely_present;
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bool should_split;
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std::vector<const FieldDescriptor*> fields;
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};
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using ChunkIterator = std::vector<FieldChunk>::const_iterator;
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// Breaks down a single chunk of fields into a few chunks that share attributes
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// controlled by "equivalent" predicate. Returns an array of chunks.
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template <typename Predicate>
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std::vector<FieldChunk> CollectFields(
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const std::vector<const FieldDescriptor*>& fields, const Options& options,
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const Predicate& equivalent) {
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std::vector<FieldChunk> chunks;
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for (auto field : fields) {
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if (chunks.empty() || !equivalent(chunks.back().fields.back(), field)) {
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chunks.emplace_back(HasHasbit(field), IsRarelyPresent(field, options),
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ShouldSplit(field, options));
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}
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chunks.back().fields.push_back(field);
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}
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return chunks;
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}
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template <typename Predicate>
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ChunkIterator FindNextUnequalChunk(ChunkIterator start, ChunkIterator end,
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const Predicate& equal) {
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auto it = start;
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while (++it != end) {
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if (!equal(*start, *it)) {
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return it;
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}
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}
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return end;
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}
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// Returns true if two chunks may be grouped for hasword check to skip multiple
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// cold fields at once. They have to share the following traits:
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// - whether they have hasbits
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// - whether they are rarely present
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// - whether they are split
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bool MayGroupChunksForHaswordsCheck(const FieldChunk& a, const FieldChunk& b) {
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return a.has_hasbit == b.has_hasbit &&
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a.is_rarely_present == b.is_rarely_present &&
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a.should_split == b.should_split;
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}
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// Returns a bit mask based on has_bit index of "fields" that are typically on
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// the same chunk. It is used in a group presence check where _has_bits_ is
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// masked to tell if any thing in "fields" is present.
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uint32_t GenChunkMask(const std::vector<const FieldDescriptor*>& fields,
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const std::vector<int>& has_bit_indices) {
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ABSL_CHECK(!fields.empty());
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int first_index_offset = has_bit_indices[fields.front()->index()] / 32;
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uint32_t chunk_mask = 0;
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for (auto field : fields) {
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// "index" defines where in the _has_bits_ the field appears.
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int index = has_bit_indices[field->index()];
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ABSL_CHECK_EQ(first_index_offset, index / 32);
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chunk_mask |= static_cast<uint32_t>(1) << (index % 32);
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}
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ABSL_CHECK_NE(0, chunk_mask);
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return chunk_mask;
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}
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// Returns a bit mask based on has_bit index of "fields" in chunks in [it, end).
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// Assumes that all chunks share the same hasbit word.
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uint32_t GenChunkMask(ChunkIterator it, ChunkIterator end,
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const std::vector<int>& has_bit_indices) {
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ABSL_CHECK(it != end);
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int first_index_offset = has_bit_indices[it->fields.front()->index()] / 32;
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uint32_t chunk_mask = 0;
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do {
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ABSL_CHECK_EQ(first_index_offset,
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has_bit_indices[it->fields.front()->index()] / 32);
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chunk_mask |= GenChunkMask(it->fields, has_bit_indices);
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} while (++it != end);
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return chunk_mask;
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}
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// Return the number of bits set in n, a non-negative integer.
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static int popcnt(uint32_t n) {
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int result = 0;
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while (n != 0) {
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result += (n & 1);
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n = n / 2;
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}
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return result;
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}
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// Returns true if it emits conditional check against hasbit words. This is
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// useful to skip multiple fields that are unlikely present based on profile
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// (go/pdproto).
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bool MaybeEmitHaswordsCheck(ChunkIterator it, ChunkIterator end,
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const Options& options,
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const std::vector<int>& has_bit_indices,
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int cached_has_word_index, const std::string& from,
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io::Printer* p) {
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if (!it->has_hasbit || !IsProfileDriven(options) ||
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std::distance(it, end) < 2 || !it->is_rarely_present) {
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return false;
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}
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auto hasbit_word = [&has_bit_indices](const FieldDescriptor* field) {
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return has_bit_indices[field->index()] / 32;
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};
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auto is_same_hasword = [&](const FieldChunk& a, const FieldChunk& b) {
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return hasbit_word(a.fields.front()) == hasbit_word(b.fields.front());
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};
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struct HasWordMask {
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int word;
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uint32_t mask;
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};
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std::vector<HasWordMask> hasword_masks;
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while (it != end) {
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auto next = FindNextUnequalChunk(it, end, is_same_hasword);
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hasword_masks.push_back({hasbit_word(it->fields.front()),
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GenChunkMask(it, next, has_bit_indices)});
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it = next;
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}
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|
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// Emit has_bit check for each has_bit_dword index.
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p->Emit(
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{{"cond",
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[&] {
|
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int first_word = hasword_masks.front().word;
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|
for (const auto& m : hasword_masks) {
|
|
uint32_t mask = m.mask;
|
|
int this_word = m.word;
|
|
if (this_word != first_word) {
|
|
p->Emit(R"cc(
|
|
||
|
|
)cc");
|
|
}
|
|
auto v = p->WithVars({{"mask", absl::StrFormat("0x%08xu", mask)}});
|
|
if (this_word == cached_has_word_index) {
|
|
p->Emit("(cached_has_bits & $mask$) != 0");
|
|
} else {
|
|
p->Emit({{"from", from}, {"word", this_word}},
|
|
"($from$_impl_._has_bits_[$word$] & $mask$) != 0");
|
|
}
|
|
}
|
|
}}},
|
|
R"cc(
|
|
if (PROTOBUF_PREDICT_FALSE($cond$)) {
|
|
)cc");
|
|
p->Indent();
|
|
return true;
|
|
}
|
|
|
|
absl::flat_hash_map<absl::string_view, std::string> ClassVars(
|
|
const Descriptor* desc, Options opts) {
|
|
absl::flat_hash_map<absl::string_view, std::string> vars = MessageVars(desc);
|
|
|
|
vars.emplace("pkg", Namespace(desc, opts));
|
|
vars.emplace("Msg", ClassName(desc, false));
|
|
vars.emplace("pkg::Msg", QualifiedClassName(desc, opts));
|
|
vars.emplace("pkg.Msg", desc->full_name());
|
|
|
|
// Old-style names, to be removed once all usages are gone in this and other
|
|
// files.
|
|
vars.emplace("classname", ClassName(desc, false));
|
|
vars.emplace("classtype", QualifiedClassName(desc, opts));
|
|
vars.emplace("full_name", desc->full_name());
|
|
vars.emplace("superclass", SuperClassName(desc, opts));
|
|
|
|
for (auto& pair : UnknownFieldsVars(desc, opts)) {
|
|
vars.emplace(pair);
|
|
}
|
|
|
|
return vars;
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
// ===================================================================
|
|
|
|
MessageGenerator::MessageGenerator(
|
|
const Descriptor* descriptor,
|
|
const absl::flat_hash_map<absl::string_view, std::string>&,
|
|
int index_in_file_messages, const Options& options,
|
|
MessageSCCAnalyzer* scc_analyzer)
|
|
: descriptor_(descriptor),
|
|
index_in_file_messages_(index_in_file_messages),
|
|
options_(options),
|
|
field_generators_(descriptor),
|
|
scc_analyzer_(scc_analyzer) {
|
|
|
|
if (!message_layout_helper_) {
|
|
message_layout_helper_ = std::make_unique<PaddingOptimizer>();
|
|
}
|
|
|
|
// Compute optimized field order to be used for layout and initialization
|
|
// purposes.
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
if (IsWeak(field, options_)) {
|
|
++num_weak_fields_;
|
|
continue;
|
|
}
|
|
|
|
if (!field->real_containing_oneof()) {
|
|
optimized_order_.push_back(field);
|
|
}
|
|
}
|
|
|
|
const size_t initial_size = optimized_order_.size();
|
|
message_layout_helper_->OptimizeLayout(&optimized_order_, options_,
|
|
scc_analyzer_);
|
|
ABSL_CHECK_EQ(initial_size, optimized_order_.size());
|
|
|
|
// This message has hasbits iff one or more fields need one.
|
|
for (auto field : optimized_order_) {
|
|
if (HasHasbit(field)) {
|
|
if (has_bit_indices_.empty()) {
|
|
has_bit_indices_.resize(descriptor_->field_count(), kNoHasbit);
|
|
}
|
|
has_bit_indices_[field->index()] = max_has_bit_index_++;
|
|
}
|
|
if (IsStringInlined(field, options_)) {
|
|
if (inlined_string_indices_.empty()) {
|
|
inlined_string_indices_.resize(descriptor_->field_count(), kNoHasbit);
|
|
// The bitset[0] is for arena dtor tracking. Donating states start from
|
|
// bitset[1];
|
|
++max_inlined_string_index_;
|
|
}
|
|
|
|
inlined_string_indices_[field->index()] = max_inlined_string_index_++;
|
|
}
|
|
}
|
|
field_generators_.Build(options_, scc_analyzer_, has_bit_indices_,
|
|
inlined_string_indices_);
|
|
|
|
for (int i = 0; i < descriptor->field_count(); i++) {
|
|
if (descriptor->field(i)->is_required()) {
|
|
++num_required_fields_;
|
|
}
|
|
}
|
|
|
|
parse_function_generator_ = std::make_unique<ParseFunctionGenerator>(
|
|
descriptor_, max_has_bit_index_, has_bit_indices_,
|
|
inlined_string_indices_, options_, scc_analyzer_, variables_);
|
|
}
|
|
|
|
size_t MessageGenerator::HasBitsSize() const {
|
|
return (max_has_bit_index_ + 31) / 32;
|
|
}
|
|
|
|
size_t MessageGenerator::InlinedStringDonatedSize() const {
|
|
return (max_inlined_string_index_ + 31) / 32;
|
|
}
|
|
|
|
absl::flat_hash_map<absl::string_view, std::string>
|
|
MessageGenerator::HasBitVars(const FieldDescriptor* field) const {
|
|
int has_bit_index = HasBitIndex(field);
|
|
ABSL_CHECK_NE(has_bit_index, kNoHasbit);
|
|
return {
|
|
{"has_array_index", absl::StrCat(has_bit_index / 32)},
|
|
{"has_mask", absl::StrFormat("0x%08xu", 1u << (has_bit_index % 32))},
|
|
};
|
|
}
|
|
|
|
int MessageGenerator::HasBitIndex(const FieldDescriptor* field) const {
|
|
return has_bit_indices_.empty() ? kNoHasbit
|
|
: has_bit_indices_[field->index()];
|
|
}
|
|
|
|
int MessageGenerator::HasByteIndex(const FieldDescriptor* field) const {
|
|
int hasbit = HasBitIndex(field);
|
|
return hasbit == kNoHasbit ? kNoHasbit : hasbit / 8;
|
|
}
|
|
|
|
int MessageGenerator::HasWordIndex(const FieldDescriptor* field) const {
|
|
int hasbit = HasBitIndex(field);
|
|
return hasbit == kNoHasbit ? kNoHasbit : hasbit / 32;
|
|
}
|
|
|
|
void MessageGenerator::AddGenerators(
|
|
std::vector<std::unique_ptr<EnumGenerator>>* enum_generators,
|
|
std::vector<std::unique_ptr<ExtensionGenerator>>* extension_generators) {
|
|
for (int i = 0; i < descriptor_->enum_type_count(); i++) {
|
|
enum_generators->emplace_back(
|
|
std::make_unique<EnumGenerator>(descriptor_->enum_type(i), options_));
|
|
enum_generators_.push_back(enum_generators->back().get());
|
|
}
|
|
for (int i = 0; i < descriptor_->extension_count(); i++) {
|
|
extension_generators->emplace_back(std::make_unique<ExtensionGenerator>(
|
|
descriptor_->extension(i), options_, scc_analyzer_));
|
|
extension_generators_.push_back(extension_generators->back().get());
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateFieldAccessorDeclarations(io::Printer* p) {
|
|
auto v = p->WithVars(MessageVars(descriptor_));
|
|
|
|
// optimized_fields_ does not contain fields where
|
|
// field->real_containing_oneof()
|
|
// so we need to iterate over those as well.
|
|
//
|
|
// We place the non-oneof fields in optimized_order_, as that controls the
|
|
// order of the _has_bits_ entries and we want GDB's pretty ps to be
|
|
// able to infer these indices from the k[FIELDNAME]FieldNumber order.
|
|
std::vector<const FieldDescriptor*> ordered_fields;
|
|
ordered_fields.reserve(descriptor_->field_count());
|
|
ordered_fields.insert(ordered_fields.begin(), optimized_order_.begin(),
|
|
optimized_order_.end());
|
|
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
if (!field->real_containing_oneof() && !field->options().weak()) {
|
|
continue;
|
|
}
|
|
ordered_fields.push_back(field);
|
|
}
|
|
|
|
if (!ordered_fields.empty()) {
|
|
p->Emit({{
|
|
"kFields",
|
|
[&] {
|
|
for (auto field : ordered_fields) {
|
|
auto v = p->WithVars(FieldVars(field, options_));
|
|
p->Emit({Sub("kField", FieldConstantName(field))
|
|
.AnnotatedAs(field)},
|
|
R"cc(
|
|
$kField$ = $number$,
|
|
)cc");
|
|
}
|
|
},
|
|
}},
|
|
R"cc(
|
|
enum : int {
|
|
$kFields$,
|
|
};
|
|
)cc");
|
|
}
|
|
for (auto field : ordered_fields) {
|
|
auto name = FieldName(field);
|
|
|
|
auto v = p->WithVars(FieldVars(field, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
p->Emit(
|
|
{{"field_comment", FieldComment(field, options_)},
|
|
Sub("const_impl", "const;").WithSuffix(";"),
|
|
Sub("impl", ";").WithSuffix(";"),
|
|
{"sizer",
|
|
[&] {
|
|
if (!field->is_repeated()) return;
|
|
p->Emit({Sub("name_size", absl::StrCat(name, "_size"))
|
|
.AnnotatedAs(field)},
|
|
R"cc(
|
|
$deprecated_attr $int $name_size$() $const_impl$;
|
|
)cc");
|
|
|
|
p->Emit({Sub("_internal_name_size",
|
|
absl::StrCat("_internal_", name, "_size"))
|
|
.AnnotatedAs(field)},
|
|
R"cc(
|
|
private:
|
|
int $_internal_name_size$() const;
|
|
|
|
public:
|
|
)cc");
|
|
}},
|
|
{"hazzer",
|
|
[&] {
|
|
if (!field->has_presence()) return;
|
|
p->Emit({Sub("has_name", absl::StrCat("has_", name))
|
|
.AnnotatedAs(field)},
|
|
R"cc(
|
|
$deprecated_attr $bool $has_name$() $const_impl$;
|
|
)cc");
|
|
}},
|
|
{"internal_hazzer",
|
|
[&] {
|
|
if (field->is_repeated() || !HasInternalHasMethod(field)) {
|
|
return;
|
|
}
|
|
p->Emit(
|
|
{Sub("_internal_has_name", absl::StrCat("_internal_has_", name))
|
|
.AnnotatedAs(field)},
|
|
R"cc(
|
|
private:
|
|
bool $_internal_has_name$() const;
|
|
|
|
public:
|
|
)cc");
|
|
}},
|
|
{"clearer",
|
|
[&] {
|
|
p->Emit({Sub("clear_name", absl::StrCat("clear_", name))
|
|
.AnnotatedAs({
|
|
field,
|
|
Semantic::kSet,
|
|
})},
|
|
R"cc(
|
|
$deprecated_attr $void $clear_name$() $impl$;
|
|
)cc");
|
|
}},
|
|
{"accessors",
|
|
[&] {
|
|
field_generators_.get(field).GenerateAccessorDeclarations(p);
|
|
}}},
|
|
R"cc(
|
|
// $field_comment$
|
|
$sizer$;
|
|
$hazzer$;
|
|
$internal_hazzer$;
|
|
$clearer$;
|
|
$accessors$;
|
|
)cc");
|
|
}
|
|
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
// Generate accessors for extensions.
|
|
// We use "_proto_TypeTraits" as a type name below because "TypeTraits"
|
|
// causes problems if the class has a nested message or enum type with that
|
|
// name and "_TypeTraits" is technically reserved for the C++ library since
|
|
// it starts with an underscore followed by a capital letter.
|
|
//
|
|
// For similar reason, we use "_field_type" and "_is_packed" as parameter
|
|
// names below, so that "field_type" and "is_packed" can be used as field
|
|
// names.
|
|
p->Emit(R"cc(
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline bool HasExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) const {
|
|
$annotate_extension_has$;
|
|
return $extensions$.Has(id.number());
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline void ClearExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) {
|
|
$extensions$.ClearExtension(id.number());
|
|
$annotate_extension_clear$;
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline int ExtensionSize(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) const {
|
|
$annotate_extension_repeated_size$;
|
|
return $extensions$.ExtensionSize(id.number());
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Singular::ConstType GetExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) const {
|
|
$annotate_extension_get$;
|
|
return _proto_TypeTraits::Get(id.number(), $extensions$, id.default_value());
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Singular::MutableType MutableExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) {
|
|
$annotate_extension_mutable$;
|
|
return _proto_TypeTraits::Mutable(id.number(), _field_type, &$extensions$);
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline void SetExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
typename _proto_TypeTraits::Singular::ConstType value) {
|
|
_proto_TypeTraits::Set(id.number(), _field_type, value, &$extensions$);
|
|
$annotate_extension_set$;
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline void SetAllocatedExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
typename _proto_TypeTraits::Singular::MutableType value) {
|
|
_proto_TypeTraits::SetAllocated(id.number(), _field_type, value,
|
|
&$extensions$);
|
|
$annotate_extension_set$;
|
|
}
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline void UnsafeArenaSetAllocatedExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
typename _proto_TypeTraits::Singular::MutableType value) {
|
|
_proto_TypeTraits::UnsafeArenaSetAllocated(id.number(), _field_type,
|
|
value, &$extensions$);
|
|
$annotate_extension_set$;
|
|
}
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
PROTOBUF_NODISCARD inline
|
|
typename _proto_TypeTraits::Singular::MutableType
|
|
ReleaseExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) {
|
|
$annotate_extension_release$;
|
|
return _proto_TypeTraits::Release(id.number(), _field_type, &$extensions$);
|
|
}
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Singular::MutableType
|
|
UnsafeArenaReleaseExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) {
|
|
$annotate_extension_release$;
|
|
return _proto_TypeTraits::UnsafeArenaRelease(id.number(), _field_type,
|
|
&$extensions$);
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Repeated::ConstType GetExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
int index) const {
|
|
$annotate_repeated_extension_get$;
|
|
return _proto_TypeTraits::Get(id.number(), $extensions$, index);
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Repeated::MutableType MutableExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
int index) {
|
|
$annotate_repeated_extension_mutable$;
|
|
return _proto_TypeTraits::Mutable(id.number(), index, &$extensions$);
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline void SetExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
int index, typename _proto_TypeTraits::Repeated::ConstType value) {
|
|
_proto_TypeTraits::Set(id.number(), index, value, &$extensions$);
|
|
$annotate_repeated_extension_set$;
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Repeated::MutableType AddExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) {
|
|
typename _proto_TypeTraits::Repeated::MutableType to_add =
|
|
_proto_TypeTraits::Add(id.number(), _field_type, &$extensions$);
|
|
$annotate_repeated_extension_add_mutable$;
|
|
return to_add;
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline void AddExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id,
|
|
typename _proto_TypeTraits::Repeated::ConstType value) {
|
|
_proto_TypeTraits::Add(id.number(), _field_type, _is_packed, value,
|
|
&$extensions$);
|
|
$annotate_repeated_extension_add$;
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline const typename _proto_TypeTraits::Repeated::RepeatedFieldType&
|
|
GetRepeatedExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) const {
|
|
$annotate_repeated_extension_list$;
|
|
return _proto_TypeTraits::GetRepeated(id.number(), $extensions$);
|
|
}
|
|
|
|
template <typename _proto_TypeTraits, $pbi$::FieldType _field_type,
|
|
bool _is_packed>
|
|
inline typename _proto_TypeTraits::Repeated::RepeatedFieldType*
|
|
MutableRepeatedExtension(
|
|
const $pbi$::ExtensionIdentifier<$Msg$, _proto_TypeTraits,
|
|
_field_type, _is_packed>& id) {
|
|
$annotate_repeated_extension_list_mutable$;
|
|
return _proto_TypeTraits::MutableRepeated(id.number(), _field_type,
|
|
_is_packed, &$extensions$);
|
|
}
|
|
)cc");
|
|
|
|
// Generate MessageSet specific APIs for proto2 MessageSet.
|
|
// For testing purposes we don't check for bridge.MessageSet, so
|
|
// we don't use IsProto2MessageSet
|
|
if (descriptor_->options().message_set_wire_format() &&
|
|
!options_.opensource_runtime && !options_.lite_implicit_weak_fields) {
|
|
// Special-case MessageSet.
|
|
p->Emit(R"cc(
|
|
GOOGLE_PROTOBUF_EXTENSION_MESSAGE_SET_ACCESSORS($Msg$);
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
p->Emit({{"oneof_name", oneof->name()},
|
|
Sub{"clear_oneof_name", absl::StrCat("clear_", oneof->name())}
|
|
.AnnotatedAs(oneof),
|
|
{"OneOfName", UnderscoresToCamelCase(oneof->name(), true)}},
|
|
R"cc(
|
|
void $clear_oneof_name$();
|
|
$OneOfName$Case $oneof_name$_case() const;
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateSingularFieldHasBits(
|
|
const FieldDescriptor* field, io::Printer* p) {
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
if (field->options().weak()) {
|
|
p->Emit(
|
|
R"cc(
|
|
inline bool $classname$::has_$name$() const {
|
|
$annotate_has$;
|
|
return $weak_field_map$.Has($number$);
|
|
}
|
|
)cc");
|
|
return;
|
|
}
|
|
if (HasHasbit(field)) {
|
|
auto v = p->WithVars(HasBitVars(field));
|
|
p->Emit(
|
|
{Sub{"ASSUME",
|
|
[&] {
|
|
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE &&
|
|
!IsLazy(field, options_, scc_analyzer_)) {
|
|
// We maintain the invariant that for a submessage x, has_x()
|
|
// returning true implies that x_ is not null. By giving this
|
|
// information to the compiler, we allow it to eliminate
|
|
// unnecessary null checks later on.
|
|
p->Emit(
|
|
R"cc(PROTOBUF_ASSUME(!value || $field$ != nullptr);)cc");
|
|
}
|
|
}}
|
|
.WithSuffix(";")},
|
|
R"cc(
|
|
inline bool $classname$::has_$name$() const {
|
|
$annotate_has$;
|
|
bool value = ($has_bits$[$has_array_index$] & $has_mask$) != 0;
|
|
$ASSUME$;
|
|
return value;
|
|
}
|
|
)cc");
|
|
} else if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
|
|
// Message fields have a has_$name$() method.
|
|
if (IsLazy(field, options_, scc_analyzer_)) {
|
|
p->Emit(R"cc(
|
|
inline bool $classname$::_internal_has_$name$() const {
|
|
return !$field$.IsCleared();
|
|
}
|
|
)cc");
|
|
} else {
|
|
p->Emit(R"cc(
|
|
inline bool $classname$::_internal_has_$name$() const {
|
|
return this != internal_default_instance() && $field$ != nullptr;
|
|
}
|
|
)cc");
|
|
}
|
|
p->Emit(R"cc(
|
|
inline bool $classname$::has_$name$() const {
|
|
$annotate_has$;
|
|
return _internal_has_$name$();
|
|
}
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateOneofHasBits(io::Printer* p) {
|
|
for (const auto* oneof : OneOfRange(descriptor_)) {
|
|
p->Emit(
|
|
{
|
|
{"oneof_index", oneof->index()},
|
|
{"oneof_name", oneof->name()},
|
|
{"cap_oneof_name", absl::AsciiStrToUpper(oneof->name())},
|
|
},
|
|
R"cc(
|
|
inline bool $classname$::has_$oneof_name$() const {
|
|
return $oneof_name$_case() != $cap_oneof_name$_NOT_SET;
|
|
}
|
|
inline void $classname$::clear_has_$oneof_name$() {
|
|
$oneof_case$[$oneof_index$] = $cap_oneof_name$_NOT_SET;
|
|
}
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateOneofMemberHasBits(const FieldDescriptor* field,
|
|
io::Printer* p) {
|
|
// Singular field in a oneof
|
|
// N.B.: Without field presence, we do not use has-bits or generate
|
|
// has_$name$() methods, but oneofs still have set_has_$name$().
|
|
// Oneofs also have private _internal_has_$name$() a helper method.
|
|
if (field->has_presence()) {
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
p->Emit(R"cc(
|
|
inline bool $classname$::has_$name$() const {
|
|
$annotate_has$;
|
|
return $has_field$;
|
|
}
|
|
)cc");
|
|
}
|
|
if (HasInternalHasMethod(field)) {
|
|
p->Emit(R"cc(
|
|
inline bool $classname$::_internal_has_$name$() const {
|
|
return $has_field$;
|
|
}
|
|
)cc");
|
|
}
|
|
// set_has_$name$() for oneof fields is always private; hence should not be
|
|
// annotated.
|
|
p->Emit(R"cc(
|
|
inline void $classname$::set_has_$name$() {
|
|
$oneof_case$[$oneof_index$] = k$field_name$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateFieldClear(const FieldDescriptor* field,
|
|
bool is_inline, io::Printer* p) {
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
p->Emit({{"inline", is_inline ? "inline" : ""},
|
|
{"body",
|
|
[&] {
|
|
if (field->real_containing_oneof()) {
|
|
// Clear this field only if it is the active field in this
|
|
// oneof, otherwise ignore
|
|
p->Emit(
|
|
{{"clearing_code",
|
|
[&] {
|
|
field_generators_.get(field).GenerateClearingCode(p);
|
|
}}},
|
|
R"cc(
|
|
if ($has_field$) {
|
|
$clearing_code$;
|
|
clear_has_$oneof_name$();
|
|
}
|
|
)cc");
|
|
} else {
|
|
// TODO(b/281513105): figure out if early return breaks tracking
|
|
if (ShouldSplit(field, options_)) {
|
|
p->Emit(R"cc(
|
|
if (IsSplitMessageDefault()) return;
|
|
)cc");
|
|
}
|
|
field_generators_.get(field).GenerateClearingCode(p);
|
|
if (HasHasbit(field)) {
|
|
auto v = p->WithVars(HasBitVars(field));
|
|
p->Emit(R"cc(
|
|
$has_bits$[$has_array_index$] &= ~$has_mask$;
|
|
)cc");
|
|
}
|
|
}
|
|
}}},
|
|
R"cc(
|
|
$inline $void $classname$::clear_$name$() {
|
|
$body$;
|
|
$annotate_clear$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateFieldAccessorDefinitions(io::Printer* p) {
|
|
p->Emit("// $classname$\n\n");
|
|
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
PrintFieldComment(Formatter{p}, field, options_);
|
|
|
|
auto v = p->WithVars(FieldVars(field, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
if (field->is_repeated()) {
|
|
p->Emit(R"cc(
|
|
inline int $classname$::_internal_$name$_size() const {
|
|
return _internal_$name$().size();
|
|
}
|
|
inline int $classname$::$name$_size() const {
|
|
$annotate_size$;
|
|
return _internal_$name$_size();
|
|
}
|
|
)cc");
|
|
} else if (field->real_containing_oneof()) {
|
|
GenerateOneofMemberHasBits(field, p);
|
|
} else {
|
|
GenerateSingularFieldHasBits(field, p);
|
|
}
|
|
|
|
if (!IsCrossFileMaybeMap(field)) {
|
|
GenerateFieldClear(field, true, p);
|
|
}
|
|
// Generate type-specific accessors.
|
|
field_generators_.get(field).GenerateInlineAccessorDefinitions(p);
|
|
|
|
p->Emit("\n");
|
|
}
|
|
|
|
GenerateOneofHasBits(p);
|
|
}
|
|
|
|
void MessageGenerator::GenerateClassDefinition(io::Printer* p) {
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
Formatter format(p);
|
|
|
|
if (IsMapEntryMessage(descriptor_)) {
|
|
absl::flat_hash_map<absl::string_view, std::string> vars;
|
|
CollectMapInfo(options_, descriptor_, &vars);
|
|
vars["lite"] =
|
|
HasDescriptorMethods(descriptor_->file(), options_) ? "" : "Lite";
|
|
auto v = p->WithVars(std::move(vars));
|
|
format(
|
|
"class $classname$ final : public "
|
|
"::$proto_ns$::internal::MapEntry$lite$<$classname$, \n"
|
|
" $key_cpp$, $val_cpp$,\n"
|
|
" ::$proto_ns$::internal::WireFormatLite::$key_wire_type$,\n"
|
|
" ::$proto_ns$::internal::WireFormatLite::$val_wire_type$> {\n"
|
|
"public:\n"
|
|
" typedef ::$proto_ns$::internal::MapEntry$lite$<$classname$, \n"
|
|
" $key_cpp$, $val_cpp$,\n"
|
|
" ::$proto_ns$::internal::WireFormatLite::$key_wire_type$,\n"
|
|
" ::$proto_ns$::internal::WireFormatLite::$val_wire_type$> "
|
|
"SuperType;\n"
|
|
" $classname$();\n"
|
|
// Templatize constexpr constructor as a workaround for a bug in gcc 12
|
|
// (warning in gcc 13).
|
|
" template <typename = void>\n"
|
|
" explicit PROTOBUF_CONSTEXPR $classname$(\n"
|
|
" ::$proto_ns$::internal::ConstantInitialized);\n"
|
|
" explicit $classname$(::$proto_ns$::Arena* arena);\n"
|
|
" void MergeFrom(const $classname$& other);\n"
|
|
" static const $classname$* internal_default_instance() { return "
|
|
"reinterpret_cast<const "
|
|
"$classname$*>(&_$classname$_default_instance_); }\n");
|
|
auto utf8_check = internal::cpp::GetUtf8CheckMode(
|
|
descriptor_->field(0), GetOptimizeFor(descriptor_->file(), options_) ==
|
|
FileOptions::LITE_RUNTIME);
|
|
if (descriptor_->field(0)->type() == FieldDescriptor::TYPE_STRING &&
|
|
utf8_check != Utf8CheckMode::kNone) {
|
|
if (utf8_check == Utf8CheckMode::kStrict) {
|
|
format(
|
|
" static bool ValidateKey(std::string* s) {\n"
|
|
" return ::$proto_ns$::internal::WireFormatLite::"
|
|
"VerifyUtf8String(s->data(), static_cast<int>(s->size()), "
|
|
"::$proto_ns$::internal::WireFormatLite::PARSE, \"$1$\");\n"
|
|
" }\n",
|
|
descriptor_->field(0)->full_name());
|
|
} else {
|
|
ABSL_CHECK(utf8_check == Utf8CheckMode::kVerify);
|
|
format(
|
|
" static bool ValidateKey(std::string* s) {\n"
|
|
"#ifndef NDEBUG\n"
|
|
" ::$proto_ns$::internal::WireFormatLite::VerifyUtf8String(\n"
|
|
" s->data(), static_cast<int>(s->size()), "
|
|
"::$proto_ns$::internal::"
|
|
"WireFormatLite::PARSE, \"$1$\");\n"
|
|
"#else\n"
|
|
" (void) s;\n"
|
|
"#endif\n"
|
|
" return true;\n"
|
|
" }\n",
|
|
descriptor_->field(0)->full_name());
|
|
}
|
|
} else {
|
|
format(" static bool ValidateKey(void*) { return true; }\n");
|
|
}
|
|
if (descriptor_->field(1)->type() == FieldDescriptor::TYPE_STRING &&
|
|
utf8_check != Utf8CheckMode::kNone) {
|
|
if (utf8_check == Utf8CheckMode::kStrict) {
|
|
format(
|
|
" static bool ValidateValue(std::string* s) {\n"
|
|
" return ::$proto_ns$::internal::WireFormatLite::"
|
|
"VerifyUtf8String(s->data(), static_cast<int>(s->size()), "
|
|
"::$proto_ns$::internal::WireFormatLite::PARSE, \"$1$\");\n"
|
|
" }\n",
|
|
descriptor_->field(1)->full_name());
|
|
} else {
|
|
ABSL_CHECK(utf8_check == Utf8CheckMode::kVerify);
|
|
format(
|
|
" static bool ValidateValue(std::string* s) {\n"
|
|
"#ifndef NDEBUG\n"
|
|
" ::$proto_ns$::internal::WireFormatLite::VerifyUtf8String(\n"
|
|
" s->data(), static_cast<int>(s->size()), "
|
|
"::$proto_ns$::internal::"
|
|
"WireFormatLite::PARSE, \"$1$\");\n"
|
|
"#else\n"
|
|
" (void) s;\n"
|
|
"#endif\n"
|
|
" return true;\n"
|
|
" }\n",
|
|
descriptor_->field(1)->full_name());
|
|
}
|
|
} else {
|
|
format(" static bool ValidateValue(void*) { return true; }\n");
|
|
}
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
format(
|
|
" using ::$proto_ns$::Message::MergeFrom;\n"
|
|
""
|
|
" ::$proto_ns$::Metadata GetMetadata() const final;\n");
|
|
}
|
|
format(
|
|
" friend struct ::$tablename$;\n"
|
|
"};\n");
|
|
return;
|
|
}
|
|
|
|
format(
|
|
"class $dllexport_decl $${1$$classname$$}$ final :\n"
|
|
" public $superclass$ /* @@protoc_insertion_point("
|
|
"class_definition:$full_name$) */ {\n",
|
|
descriptor_);
|
|
format(" public:\n");
|
|
format.Indent();
|
|
|
|
format("inline $classname$() : $classname$(nullptr) {}\n");
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
format("~$classname$() override;\n");
|
|
}
|
|
format(
|
|
// Templatize constexpr constructor as a workaround for a bug in gcc 12
|
|
// (warning in gcc 13).
|
|
"template<typename = void>\n"
|
|
"explicit PROTOBUF_CONSTEXPR "
|
|
"$classname$(::$proto_ns$::internal::ConstantInitialized);\n"
|
|
"\n"
|
|
"$classname$(const $classname$& from);\n"
|
|
"$classname$($classname$&& from) noexcept\n"
|
|
" : $classname$() {\n"
|
|
" *this = ::std::move(from);\n"
|
|
"}\n"
|
|
"\n"
|
|
"inline $classname$& operator=(const $classname$& from) {\n"
|
|
" CopyFrom(from);\n"
|
|
" return *this;\n"
|
|
"}\n"
|
|
"inline $classname$& operator=($classname$&& from) noexcept {\n"
|
|
" if (this == &from) return *this;\n"
|
|
" if (GetOwningArena() == from.GetOwningArena()\n"
|
|
"#ifdef PROTOBUF_FORCE_COPY_IN_MOVE\n"
|
|
" && GetOwningArena() != nullptr\n"
|
|
"#endif // !PROTOBUF_FORCE_COPY_IN_MOVE\n"
|
|
" ) {\n"
|
|
" InternalSwap(&from);\n"
|
|
" } else {\n"
|
|
" CopyFrom(from);\n"
|
|
" }\n"
|
|
" return *this;\n"
|
|
"}\n"
|
|
"\n");
|
|
|
|
p->Emit(R"cc(
|
|
inline const $unknown_fields_type$& unknown_fields() const {
|
|
$annotate_unknown_fields$;
|
|
return $unknown_fields$;
|
|
}
|
|
inline $unknown_fields_type$* mutable_unknown_fields() {
|
|
$annotate_mutable_unknown_fields$;
|
|
return $mutable_unknown_fields$;
|
|
}
|
|
)cc");
|
|
// Adding a blank line to be consistent with the previous version.
|
|
p->Emit("\n");
|
|
|
|
// Only generate this member if it's not disabled.
|
|
if (HasDescriptorMethods(descriptor_->file(), options_) &&
|
|
!descriptor_->options().no_standard_descriptor_accessor()) {
|
|
format(
|
|
"static const ::$proto_ns$::Descriptor* descriptor() {\n"
|
|
" return GetDescriptor();\n"
|
|
"}\n");
|
|
}
|
|
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
// These shadow non-static methods of the same names in Message. We
|
|
// redefine them here because calls directly on the generated class can be
|
|
// statically analyzed -- we know what descriptor types are being requested.
|
|
// It also avoids a vtable dispatch.
|
|
//
|
|
// We would eventually like to eliminate the methods in Message, and having
|
|
// this separate also lets us track calls to the base class methods
|
|
// separately.
|
|
format(
|
|
"static const ::$proto_ns$::Descriptor* GetDescriptor() {\n"
|
|
" return default_instance().GetMetadata().descriptor;\n"
|
|
"}\n"
|
|
"static const ::$proto_ns$::Reflection* GetReflection() {\n"
|
|
" return default_instance().GetMetadata().reflection;\n"
|
|
"}\n");
|
|
}
|
|
|
|
format(
|
|
"static const $classname$& default_instance() {\n"
|
|
" return *internal_default_instance();\n"
|
|
"}\n");
|
|
|
|
// Generate enum values for every field in oneofs. One list is generated for
|
|
// each oneof with an additional *_NOT_SET value.
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format("enum $1$Case {\n", UnderscoresToCamelCase(oneof->name(), true));
|
|
format.Indent();
|
|
for (auto field : FieldRange(oneof)) {
|
|
format("$1$ = $2$,\n", OneofCaseConstantName(field), // 1
|
|
field->number()); // 2
|
|
}
|
|
format("$1$_NOT_SET = 0,\n", absl::AsciiStrToUpper(oneof->name()));
|
|
format.Outdent();
|
|
format(
|
|
"};\n"
|
|
"\n");
|
|
}
|
|
|
|
// TODO(gerbens) make this private, while still granting other protos access.
|
|
format(
|
|
"static inline const $classname$* internal_default_instance() {\n"
|
|
" return reinterpret_cast<const $classname$*>(\n"
|
|
" &_$classname$_default_instance_);\n"
|
|
"}\n"
|
|
"static constexpr int kIndexInFileMessages =\n"
|
|
" $1$;\n"
|
|
"\n",
|
|
index_in_file_messages_);
|
|
|
|
if (IsAnyMessage(descriptor_, options_)) {
|
|
format(
|
|
"// implements Any -----------------------------------------------\n"
|
|
"\n");
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
format(
|
|
"bool PackFrom(const ::$proto_ns$::Message& message) {\n"
|
|
" $DCHK$_NE(&message, this);\n"
|
|
" return $any_metadata$.PackFrom(GetArena(), message);\n"
|
|
"}\n"
|
|
"bool PackFrom(const ::$proto_ns$::Message& message,\n"
|
|
" ::absl::string_view type_url_prefix) {\n"
|
|
" $DCHK$_NE(&message, this);\n"
|
|
" return $any_metadata$.PackFrom(GetArena(), message, "
|
|
"type_url_prefix);\n"
|
|
"}\n"
|
|
"bool UnpackTo(::$proto_ns$::Message* message) const {\n"
|
|
" return $any_metadata$.UnpackTo(message);\n"
|
|
"}\n"
|
|
"static bool GetAnyFieldDescriptors(\n"
|
|
" const ::$proto_ns$::Message& message,\n"
|
|
" const ::$proto_ns$::FieldDescriptor** type_url_field,\n"
|
|
" const ::$proto_ns$::FieldDescriptor** value_field);\n"
|
|
"template <typename T, class = typename std::enable_if<"
|
|
"!std::is_convertible<T, const ::$proto_ns$::Message&>"
|
|
"::value>::type>\n"
|
|
"bool PackFrom(const T& message) {\n"
|
|
" return $any_metadata$.PackFrom<T>(GetArena(), message);\n"
|
|
"}\n"
|
|
"template <typename T, class = typename std::enable_if<"
|
|
"!std::is_convertible<T, const ::$proto_ns$::Message&>"
|
|
"::value>::type>\n"
|
|
"bool PackFrom(const T& message,\n"
|
|
" ::absl::string_view type_url_prefix) {\n"
|
|
" return $any_metadata$.PackFrom<T>(GetArena(), message, "
|
|
"type_url_prefix);"
|
|
"}\n"
|
|
"template <typename T, class = typename std::enable_if<"
|
|
"!std::is_convertible<T, const ::$proto_ns$::Message&>"
|
|
"::value>::type>\n"
|
|
"bool UnpackTo(T* message) const {\n"
|
|
" return $any_metadata$.UnpackTo<T>(message);\n"
|
|
"}\n");
|
|
} else {
|
|
format(
|
|
"template <typename T>\n"
|
|
"bool PackFrom(const T& message) {\n"
|
|
" return $any_metadata$.PackFrom(GetArena(), message);\n"
|
|
"}\n"
|
|
"template <typename T>\n"
|
|
"bool PackFrom(const T& message,\n"
|
|
" ::absl::string_view type_url_prefix) {\n"
|
|
" return $any_metadata$.PackFrom(GetArena(), message, "
|
|
"type_url_prefix);\n"
|
|
"}\n"
|
|
"template <typename T>\n"
|
|
"bool UnpackTo(T* message) const {\n"
|
|
" return $any_metadata$.UnpackTo(message);\n"
|
|
"}\n");
|
|
}
|
|
format(
|
|
"template<typename T> bool Is() const {\n"
|
|
" return $any_metadata$.Is<T>();\n"
|
|
"}\n"
|
|
"static bool ParseAnyTypeUrl(::absl::string_view type_url,\n"
|
|
" std::string* full_type_name);\n");
|
|
}
|
|
|
|
format(
|
|
"friend void swap($classname$& a, $classname$& b) {\n"
|
|
" a.Swap(&b);\n"
|
|
"}\n"
|
|
"inline void Swap($classname$* other) {\n"
|
|
" if (other == this) return;\n"
|
|
"#ifdef PROTOBUF_FORCE_COPY_IN_SWAP\n"
|
|
" if (GetOwningArena() != nullptr &&\n"
|
|
" GetOwningArena() == other->GetOwningArena()) {\n "
|
|
"#else // PROTOBUF_FORCE_COPY_IN_SWAP\n"
|
|
" if (GetOwningArena() == other->GetOwningArena()) {\n"
|
|
"#endif // !PROTOBUF_FORCE_COPY_IN_SWAP\n"
|
|
" InternalSwap(other);\n"
|
|
" } else {\n"
|
|
" $pbi$::GenericSwap(this, other);\n"
|
|
" }\n"
|
|
"}\n"
|
|
"void UnsafeArenaSwap($classname$* other) {\n"
|
|
" if (other == this) return;\n"
|
|
" $DCHK$(GetOwningArena() == other->GetOwningArena());\n"
|
|
" InternalSwap(other);\n"
|
|
"}\n");
|
|
|
|
format(
|
|
"\n"
|
|
"// implements Message ----------------------------------------------\n"
|
|
"\n"
|
|
"$classname$* New(::$proto_ns$::Arena* arena = nullptr) const final {\n"
|
|
" return CreateMaybeMessage<$classname$>(arena);\n"
|
|
"}\n");
|
|
|
|
// For instances that derive from Message (rather than MessageLite), some
|
|
// methods are virtual and should be marked as final.
|
|
auto v2 = p->WithVars(
|
|
{{"full_final",
|
|
HasDescriptorMethods(descriptor_->file(), options_) ? "final" : ""}});
|
|
|
|
if (HasGeneratedMethods(descriptor_->file(), options_)) {
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
format(
|
|
// Use Message's built-in MergeFrom and CopyFrom when the passed-in
|
|
// argument is a generic Message instance, and only define the
|
|
// custom MergeFrom and CopyFrom instances when the source of the
|
|
// merge/copy is known to be the same class as the destination.
|
|
"using $superclass$::CopyFrom;\n"
|
|
"void CopyFrom(const $classname$& from);\n"
|
|
""
|
|
"using $superclass$::MergeFrom;\n"
|
|
"void MergeFrom("
|
|
" const $classname$& from) {\n"
|
|
" $classname$::MergeImpl(*this, from);\n"
|
|
"}\n"
|
|
"private:\n"
|
|
"static void MergeImpl(::$proto_ns$::Message& to_msg, const "
|
|
"::$proto_ns$::Message& from_msg);\n"
|
|
"public:\n");
|
|
} else {
|
|
format(
|
|
"using $superclass$::CopyFrom;\n"
|
|
"inline void CopyFrom(const $classname$& from) {\n"
|
|
" $superclass$::CopyImpl(*this, from);\n"
|
|
"}\n"
|
|
""
|
|
"using $superclass$::MergeFrom;\n"
|
|
"void MergeFrom(const $classname$& from) {\n"
|
|
" $superclass$::MergeImpl(*this, from);\n"
|
|
"}\n"
|
|
"public:\n");
|
|
}
|
|
} else {
|
|
format(
|
|
"void CheckTypeAndMergeFrom(const ::$proto_ns$::MessageLite& from)"
|
|
" final;\n"
|
|
"void CopyFrom(const $classname$& from);\n"
|
|
"void MergeFrom(const $classname$& from);\n");
|
|
}
|
|
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
format(
|
|
"PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;\n"
|
|
"bool IsInitialized() const final;\n"
|
|
"\n"
|
|
"::size_t ByteSizeLong() const final;\n");
|
|
|
|
parse_function_generator_->GenerateMethodDecls(p);
|
|
|
|
format(
|
|
"$uint8$* _InternalSerialize(\n"
|
|
" $uint8$* target, ::$proto_ns$::io::EpsCopyOutputStream* stream) "
|
|
"const final;\n");
|
|
}
|
|
}
|
|
|
|
if (options_.field_listener_options.inject_field_listener_events) {
|
|
format("static constexpr int _kInternalFieldNumber = $1$;\n",
|
|
descriptor_->field_count());
|
|
}
|
|
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
format(
|
|
"int GetCachedSize() const final { return "
|
|
"$cached_size$.Get(); }"
|
|
"\n\nprivate:\n"
|
|
"void SharedCtor(::$proto_ns$::Arena* arena);\n"
|
|
"void SharedDtor();\n"
|
|
"void SetCachedSize(int size) const$ full_final$;\n"
|
|
"void InternalSwap($classname$* other);\n");
|
|
}
|
|
|
|
format(
|
|
// Friend AnyMetadata so that it can call this FullMessageName() method.
|
|
"\nprivate:\n"
|
|
"friend class ::$proto_ns$::internal::AnyMetadata;\n"
|
|
"static ::absl::string_view FullMessageName() {\n"
|
|
" return \"$full_name$\";\n"
|
|
"}\n");
|
|
|
|
format(
|
|
// TODO(gerbens) Make this private! Currently people are deriving from
|
|
// protos to give access to this constructor, breaking the invariants
|
|
// we rely on.
|
|
"protected:\n"
|
|
"explicit $classname$(::$proto_ns$::Arena* arena);\n");
|
|
|
|
switch (NeedsArenaDestructor()) {
|
|
case ArenaDtorNeeds::kOnDemand:
|
|
format(
|
|
"private:\n"
|
|
"static void ArenaDtor(void* object);\n"
|
|
"inline void OnDemandRegisterArenaDtor(::$proto_ns$::Arena* arena) "
|
|
"override {\n"
|
|
" if (arena == nullptr || ($inlined_string_donated_array$[0] & "
|
|
"0x1u) "
|
|
"== "
|
|
"0) {\n"
|
|
" return;\n"
|
|
" }\n"
|
|
" $inlined_string_donated_array$[0] &= 0xFFFFFFFEu;\n"
|
|
" arena->OwnCustomDestructor(this, &$classname$::ArenaDtor);\n"
|
|
"}\n");
|
|
break;
|
|
case ArenaDtorNeeds::kRequired:
|
|
format(
|
|
"private:\n"
|
|
"static void ArenaDtor(void* object);\n");
|
|
break;
|
|
case ArenaDtorNeeds::kNone:
|
|
break;
|
|
}
|
|
|
|
format(
|
|
"public:\n"
|
|
"\n");
|
|
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
if (HasGeneratedMethods(descriptor_->file(), options_)) {
|
|
format(
|
|
"static const ClassData _class_data_;\n"
|
|
"const ::$proto_ns$::Message::ClassData*"
|
|
"GetClassData() const final;\n"
|
|
"\n");
|
|
}
|
|
format(
|
|
"::$proto_ns$::Metadata GetMetadata() const final;\n"
|
|
"\n");
|
|
} else {
|
|
format(
|
|
"std::string GetTypeName() const final;\n"
|
|
"\n");
|
|
}
|
|
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format(
|
|
"private:\n"
|
|
"inline bool IsSplitMessageDefault() const {\n"
|
|
" return $split$ == reinterpret_cast<const Impl_::Split*>(&$1$);\n"
|
|
"}\n"
|
|
"PROTOBUF_NOINLINE void PrepareSplitMessageForWrite();\n"
|
|
"public:\n",
|
|
DefaultInstanceName(descriptor_, options_, /*split=*/true));
|
|
}
|
|
|
|
format(
|
|
"// nested types ----------------------------------------------------\n"
|
|
"\n");
|
|
|
|
// Import all nested message classes into this class's scope with typedefs.
|
|
for (int i = 0; i < descriptor_->nested_type_count(); i++) {
|
|
const Descriptor* nested_type = descriptor_->nested_type(i);
|
|
if (!IsMapEntryMessage(nested_type)) {
|
|
auto v =
|
|
p->WithVars({{"nested_full_name", ClassName(nested_type, false)},
|
|
{"nested_name", ResolveKeyword(nested_type->name())}});
|
|
format("typedef ${1$$nested_full_name$$}$ ${1$$nested_name$$}$;\n",
|
|
nested_type);
|
|
}
|
|
}
|
|
|
|
if (descriptor_->nested_type_count() > 0) {
|
|
format("\n");
|
|
}
|
|
|
|
// Import all nested enums and their values into this class's scope with
|
|
// typedefs and constants.
|
|
for (int i = 0; i < descriptor_->enum_type_count(); i++) {
|
|
enum_generators_[i]->GenerateSymbolImports(p);
|
|
format("\n");
|
|
}
|
|
|
|
format(
|
|
"// accessors -------------------------------------------------------\n"
|
|
"\n");
|
|
|
|
// Generate accessor methods for all fields.
|
|
GenerateFieldAccessorDeclarations(p);
|
|
|
|
// Declare extension identifiers.
|
|
for (int i = 0; i < descriptor_->extension_count(); i++) {
|
|
extension_generators_[i]->GenerateDeclaration(p);
|
|
}
|
|
|
|
|
|
format("// @@protoc_insertion_point(class_scope:$full_name$)\n");
|
|
|
|
// Generate private members.
|
|
format.Outdent();
|
|
format(" private:\n");
|
|
format.Indent();
|
|
// TODO(seongkim): Remove hack to track field access and remove this class.
|
|
format("class _Internal;\n");
|
|
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
// set_has_***() generated in all oneofs.
|
|
if (!field->is_repeated() && !field->options().weak() &&
|
|
field->real_containing_oneof()) {
|
|
format("void set_has_$1$();\n", FieldName(field));
|
|
}
|
|
}
|
|
format("\n");
|
|
|
|
// Generate oneof function declarations
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format(
|
|
"inline bool has_$1$() const;\n"
|
|
"inline void clear_has_$1$();\n\n",
|
|
oneof->name());
|
|
}
|
|
|
|
if (HasGeneratedMethods(descriptor_->file(), options_)) {
|
|
parse_function_generator_->GenerateDataDecls(p);
|
|
}
|
|
|
|
// Prepare decls for _cached_size_ and _has_bits_. Their position in the
|
|
// output will be determined later.
|
|
|
|
bool need_to_emit_cached_size = !HasSimpleBaseClass(descriptor_, options_);
|
|
const std::string cached_size_decl =
|
|
"mutable ::$proto_ns$::internal::CachedSize _cached_size_;\n";
|
|
|
|
const size_t sizeof_has_bits = HasBitsSize();
|
|
const std::string has_bits_decl =
|
|
sizeof_has_bits == 0 ? ""
|
|
: absl::StrCat("::$proto_ns$::internal::HasBits<",
|
|
sizeof_has_bits, "> _has_bits_;\n");
|
|
|
|
format(
|
|
"template <typename T> friend class "
|
|
"::$proto_ns$::Arena::InternalHelper;\n"
|
|
"typedef void InternalArenaConstructable_;\n"
|
|
"typedef void DestructorSkippable_;\n");
|
|
|
|
// To minimize padding, data members are divided into three sections:
|
|
// (1) members assumed to align to 8 bytes
|
|
// (2) members corresponding to message fields, re-ordered to optimize
|
|
// alignment.
|
|
// (3) members assumed to align to 4 bytes.
|
|
|
|
format("struct Impl_ {\n");
|
|
format.Indent();
|
|
|
|
// Members assumed to align to 8 bytes:
|
|
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
format(
|
|
"::$proto_ns$::internal::ExtensionSet _extensions_;\n"
|
|
"\n");
|
|
}
|
|
|
|
if (HasTracker(descriptor_, options_)) {
|
|
format("static ::$proto_ns$::AccessListener<$1$> _tracker_;\n",
|
|
ClassName(descriptor_));
|
|
}
|
|
|
|
// Generate _inlined_string_donated_ for inlined string type.
|
|
// TODO(congliu): To avoid affecting the locality of `_has_bits_`, should this
|
|
// be below or above `_has_bits_`?
|
|
if (!inlined_string_indices_.empty()) {
|
|
format("::$proto_ns$::internal::HasBits<$1$> _inlined_string_donated_;\n",
|
|
InlinedStringDonatedSize());
|
|
}
|
|
|
|
if (!has_bit_indices_.empty()) {
|
|
// _has_bits_ is frequently accessed, so to reduce code size and improve
|
|
// speed, it should be close to the start of the object. Placing
|
|
// _cached_size_ together with _has_bits_ improves cache locality despite
|
|
// potential alignment padding.
|
|
format(has_bits_decl.c_str());
|
|
if (need_to_emit_cached_size) {
|
|
format(cached_size_decl.c_str());
|
|
need_to_emit_cached_size = false;
|
|
}
|
|
}
|
|
|
|
// Field members:
|
|
|
|
// Emit some private and static members
|
|
for (auto field : optimized_order_) {
|
|
field_generators_.get(field).GenerateStaticMembers(p);
|
|
if (!ShouldSplit(field, options_)) {
|
|
field_generators_.get(field).GeneratePrivateMembers(p);
|
|
}
|
|
}
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format("struct Split {\n");
|
|
format.Indent();
|
|
for (auto field : optimized_order_) {
|
|
if (!ShouldSplit(field, options_)) continue;
|
|
field_generators_.get(field).GeneratePrivateMembers(p);
|
|
}
|
|
format.Outdent();
|
|
format(
|
|
" typedef void InternalArenaConstructable_;\n"
|
|
" typedef void DestructorSkippable_;\n"
|
|
"};\n"
|
|
"static_assert(std::is_trivially_copy_constructible<Split>::value);\n"
|
|
"static_assert(std::is_trivially_destructible<Split>::value);\n"
|
|
"Split* _split_;\n");
|
|
}
|
|
|
|
// For each oneof generate a union
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
std::string camel_oneof_name = UnderscoresToCamelCase(oneof->name(), true);
|
|
format("union $1$Union {\n", camel_oneof_name);
|
|
format.Indent();
|
|
format(
|
|
// explicit empty constructor is needed when union contains
|
|
// ArenaStringPtr members for string fields.
|
|
"constexpr $1$Union() : _constinit_{} {}\n"
|
|
" ::$proto_ns$::internal::ConstantInitialized _constinit_;\n",
|
|
camel_oneof_name);
|
|
for (auto field : FieldRange(oneof)) {
|
|
field_generators_.get(field).GeneratePrivateMembers(p);
|
|
}
|
|
format.Outdent();
|
|
format("} $1$_;\n", oneof->name());
|
|
for (auto field : FieldRange(oneof)) {
|
|
field_generators_.get(field).GenerateStaticMembers(p);
|
|
}
|
|
}
|
|
|
|
// Members assumed to align to 4 bytes:
|
|
|
|
if (need_to_emit_cached_size) {
|
|
format(cached_size_decl.c_str());
|
|
need_to_emit_cached_size = false;
|
|
}
|
|
|
|
// Generate _oneof_case_.
|
|
if (descriptor_->real_oneof_decl_count() > 0) {
|
|
format(
|
|
"$uint32$ _oneof_case_[$1$];\n"
|
|
"\n",
|
|
descriptor_->real_oneof_decl_count());
|
|
}
|
|
|
|
if (num_weak_fields_) {
|
|
format("::$proto_ns$::internal::WeakFieldMap _weak_field_map_;\n");
|
|
}
|
|
// Generate _any_metadata_ for the Any type.
|
|
if (IsAnyMessage(descriptor_, options_)) {
|
|
format("::$proto_ns$::internal::AnyMetadata _any_metadata_;\n");
|
|
}
|
|
|
|
// For detecting when concurrent accessor calls cause races.
|
|
format("PROTOBUF_TSAN_DECLARE_MEMBER\n");
|
|
|
|
format.Outdent();
|
|
format("};\n");
|
|
|
|
// Only create the _impl_ field if it contains data.
|
|
if (HasImplData(descriptor_, options_)) {
|
|
format("union { Impl_ _impl_; };\n");
|
|
}
|
|
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format("friend struct $1$;\n",
|
|
DefaultInstanceType(descriptor_, options_, /*split=*/true));
|
|
}
|
|
|
|
// The TableStruct struct needs access to the private parts, in order to
|
|
// construct the offsets of all members.
|
|
format("friend struct ::$tablename$;\n");
|
|
|
|
format.Outdent();
|
|
format("};");
|
|
ABSL_DCHECK(!need_to_emit_cached_size);
|
|
} // NOLINT(readability/fn_size)
|
|
|
|
void MessageGenerator::GenerateInlineMethods(io::Printer* p) {
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
if (IsMapEntryMessage(descriptor_)) return;
|
|
GenerateFieldAccessorDefinitions(p);
|
|
|
|
// Generate oneof_case() functions.
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
p->Emit(
|
|
{
|
|
Sub{"oneof_name", absl::StrCat(oneof->name(), "_case")}.AnnotatedAs(
|
|
oneof),
|
|
{"OneofName",
|
|
absl::StrCat(UnderscoresToCamelCase(oneof->name(), true), "Case")},
|
|
{"oneof_index", oneof->index()},
|
|
},
|
|
R"cc(
|
|
inline $classname$::$OneofName$ $classname$::$oneof_name$() const {
|
|
return $classname$::$OneofName$($oneof_case$[$oneof_index$]);
|
|
}
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateSchema(io::Printer* p, int offset,
|
|
int has_offset) {
|
|
has_offset = !has_bit_indices_.empty() || IsMapEntryMessage(descriptor_)
|
|
? offset + has_offset
|
|
: -1;
|
|
int inlined_string_indices_offset;
|
|
if (inlined_string_indices_.empty()) {
|
|
inlined_string_indices_offset = -1;
|
|
} else {
|
|
ABSL_DCHECK_NE(has_offset, -1);
|
|
ABSL_DCHECK(!IsMapEntryMessage(descriptor_));
|
|
inlined_string_indices_offset = has_offset + has_bit_indices_.size();
|
|
}
|
|
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
p->Emit(
|
|
{
|
|
{"offset", offset},
|
|
{"has_offset", has_offset},
|
|
{"string_offsets", inlined_string_indices_offset},
|
|
},
|
|
R"cc(
|
|
{$offset$, $has_offset$, $string_offsets$, sizeof($classtype$)},
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateClassMethods(io::Printer* p) {
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
Formatter format(p);
|
|
if (IsMapEntryMessage(descriptor_)) {
|
|
format(
|
|
"$classname$::$classname$() {}\n"
|
|
"$classname$::$classname$(::$proto_ns$::Arena* arena)\n"
|
|
" : SuperType(arena) {}\n"
|
|
"void $classname$::MergeFrom(const $classname$& other) {\n"
|
|
" MergeFromInternal(other);\n"
|
|
"}\n");
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
if (!descriptor_->options().map_entry()) {
|
|
format(
|
|
"::$proto_ns$::Metadata $classname$::GetMetadata() const {\n"
|
|
"$annotate_reflection$"
|
|
" return ::_pbi::AssignDescriptors(\n"
|
|
" &$desc_table$_getter, &$desc_table$_once,\n"
|
|
" $file_level_metadata$[$1$]);\n"
|
|
"}\n",
|
|
index_in_file_messages_);
|
|
} else {
|
|
format(
|
|
"::$proto_ns$::Metadata $classname$::GetMetadata() const {\n"
|
|
" return ::_pbi::AssignDescriptors(\n"
|
|
" &$desc_table$_getter, &$desc_table$_once,\n"
|
|
" $file_level_metadata$[$1$]);\n"
|
|
"}\n",
|
|
index_in_file_messages_);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (IsAnyMessage(descriptor_, options_)) {
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
format(
|
|
"bool $classname$::GetAnyFieldDescriptors(\n"
|
|
" const ::$proto_ns$::Message& message,\n"
|
|
" const ::$proto_ns$::FieldDescriptor** type_url_field,\n"
|
|
" const ::$proto_ns$::FieldDescriptor** value_field) {\n"
|
|
" return ::_pbi::GetAnyFieldDescriptors(\n"
|
|
" message, type_url_field, value_field);\n"
|
|
"}\n");
|
|
}
|
|
format(
|
|
"bool $classname$::ParseAnyTypeUrl(\n"
|
|
" ::absl::string_view type_url,\n"
|
|
" std::string* full_type_name) {\n"
|
|
" return ::_pbi::ParseAnyTypeUrl(type_url, full_type_name);\n"
|
|
"}\n"
|
|
"\n");
|
|
}
|
|
|
|
format(
|
|
"class $classname$::_Internal {\n"
|
|
" public:\n");
|
|
format.Indent();
|
|
if (!has_bit_indices_.empty()) {
|
|
format(
|
|
"using HasBits = "
|
|
"decltype(std::declval<$classname$>().$has_bits$);\n"
|
|
"static constexpr ::int32_t kHasBitsOffset =\n"
|
|
" 8 * PROTOBUF_FIELD_OFFSET($classname$, _impl_._has_bits_);\n");
|
|
}
|
|
if (descriptor_->real_oneof_decl_count() > 0) {
|
|
format(
|
|
"static constexpr ::int32_t kOneofCaseOffset =\n"
|
|
" PROTOBUF_FIELD_OFFSET($classtype$, $oneof_case$);\n");
|
|
}
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
field_generators_.get(field).GenerateInternalAccessorDeclarations(p);
|
|
if (HasHasbit(field)) {
|
|
int has_bit_index = HasBitIndex(field);
|
|
ABSL_CHECK_NE(has_bit_index, kNoHasbit) << field->full_name();
|
|
format(
|
|
"static void set_has_$1$(HasBits* has_bits) {\n"
|
|
" (*has_bits)[$2$] |= $3$u;\n"
|
|
"}\n",
|
|
FieldName(field), has_bit_index / 32, (1u << (has_bit_index % 32)));
|
|
}
|
|
}
|
|
if (num_required_fields_ > 0) {
|
|
const std::vector<uint32_t> masks_for_has_bits = RequiredFieldsBitMask();
|
|
format(
|
|
"static bool MissingRequiredFields(const HasBits& has_bits) "
|
|
"{\n"
|
|
" return $1$;\n"
|
|
"}\n",
|
|
ConditionalToCheckBitmasks(masks_for_has_bits, false, "has_bits"));
|
|
}
|
|
|
|
format.Outdent();
|
|
format("};\n\n");
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
field_generators_.get(field).GenerateInternalAccessorDefinitions(p);
|
|
}
|
|
|
|
// Generate non-inline field definitions.
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
auto v = p->WithVars(FieldVars(field, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(field, options_));
|
|
field_generators_.get(field).GenerateNonInlineAccessorDefinitions(p);
|
|
if (IsCrossFileMaybeMap(field)) {
|
|
GenerateFieldClear(field, false, p);
|
|
}
|
|
}
|
|
|
|
GenerateStructors(p);
|
|
format("\n");
|
|
|
|
if (descriptor_->real_oneof_decl_count() > 0) {
|
|
GenerateOneofClear(p);
|
|
format("\n");
|
|
}
|
|
|
|
if (HasGeneratedMethods(descriptor_->file(), options_)) {
|
|
GenerateClear(p);
|
|
format("\n");
|
|
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
parse_function_generator_->GenerateMethodImpls(p);
|
|
format("\n");
|
|
|
|
parse_function_generator_->GenerateDataDefinitions(p);
|
|
}
|
|
|
|
GenerateSerializeWithCachedSizesToArray(p);
|
|
format("\n");
|
|
|
|
GenerateByteSize(p);
|
|
format("\n");
|
|
|
|
GenerateMergeFrom(p);
|
|
format("\n");
|
|
|
|
GenerateClassSpecificMergeImpl(p);
|
|
format("\n");
|
|
|
|
GenerateCopyFrom(p);
|
|
format("\n");
|
|
|
|
GenerateIsInitialized(p);
|
|
format("\n");
|
|
}
|
|
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format(
|
|
"void $classname$::PrepareSplitMessageForWrite() {\n"
|
|
" if (IsSplitMessageDefault()) {\n"
|
|
" void* chunk = $pbi$::CreateSplitMessageGeneric("
|
|
"GetArenaForAllocation(), &$1$, sizeof(Impl_::Split), this, &$2$);\n"
|
|
" $split$ = reinterpret_cast<Impl_::Split*>(chunk);\n"
|
|
" }\n"
|
|
"}\n",
|
|
DefaultInstanceName(descriptor_, options_, /*split=*/true),
|
|
DefaultInstanceName(descriptor_, options_, /*split=*/false));
|
|
}
|
|
|
|
GenerateVerify(p);
|
|
|
|
GenerateSwap(p);
|
|
format("\n");
|
|
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
if (!descriptor_->options().map_entry()) {
|
|
format(
|
|
"::$proto_ns$::Metadata $classname$::GetMetadata() const {\n"
|
|
"$annotate_reflection$"
|
|
" return ::_pbi::AssignDescriptors(\n"
|
|
" &$desc_table$_getter, &$desc_table$_once,\n"
|
|
" $file_level_metadata$[$1$]);\n"
|
|
"}\n",
|
|
index_in_file_messages_);
|
|
} else {
|
|
format(
|
|
"::$proto_ns$::Metadata $classname$::GetMetadata() const {\n"
|
|
" return ::_pbi::AssignDescriptors(\n"
|
|
" &$desc_table$_getter, &$desc_table$_once,\n"
|
|
" $file_level_metadata$[$1$]);\n"
|
|
"}\n",
|
|
index_in_file_messages_);
|
|
}
|
|
} else {
|
|
format(
|
|
"std::string $classname$::GetTypeName() const {\n"
|
|
" return \"$full_name$\";\n"
|
|
"}\n"
|
|
"\n");
|
|
}
|
|
|
|
if (HasTracker(descriptor_, options_)) {
|
|
format(
|
|
"::$proto_ns$::AccessListener<$classtype$> "
|
|
"$1$::$tracker$(&FullMessageName);\n",
|
|
ClassName(descriptor_));
|
|
}
|
|
}
|
|
|
|
std::pair<size_t, size_t> MessageGenerator::GenerateOffsets(io::Printer* p) {
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
Formatter format(p);
|
|
|
|
if (!has_bit_indices_.empty() || IsMapEntryMessage(descriptor_)) {
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$, $has_bits$),\n");
|
|
} else {
|
|
format("~0u, // no _has_bits_\n");
|
|
}
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$, _internal_metadata_),\n");
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$, $extensions$),\n");
|
|
} else {
|
|
format("~0u, // no _extensions_\n");
|
|
}
|
|
if (descriptor_->real_oneof_decl_count() > 0) {
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$, $oneof_case$[0]),\n");
|
|
} else {
|
|
format("~0u, // no _oneof_case_\n");
|
|
}
|
|
if (num_weak_fields_ > 0) {
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$, $weak_field_map$),\n");
|
|
} else {
|
|
format("~0u, // no _weak_field_map_\n");
|
|
}
|
|
if (!inlined_string_indices_.empty()) {
|
|
format(
|
|
"PROTOBUF_FIELD_OFFSET($classtype$, "
|
|
"$inlined_string_donated_array$),\n");
|
|
} else {
|
|
format("~0u, // no _inlined_string_donated_\n");
|
|
}
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format(
|
|
"PROTOBUF_FIELD_OFFSET($classtype$, $split$),\n"
|
|
"sizeof($classtype$::Impl_::Split),\n");
|
|
} else {
|
|
format(
|
|
"~0u, // no _split_\n"
|
|
"~0u, // no sizeof(Split)\n");
|
|
}
|
|
const int kNumGenericOffsets = 8; // the number of fixed offsets above
|
|
const size_t offsets = kNumGenericOffsets + descriptor_->field_count() +
|
|
descriptor_->real_oneof_decl_count();
|
|
size_t entries = offsets;
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
// TODO(sbenza): We should not have an entry in the offset table for fields
|
|
// that do not use them.
|
|
if (field->options().weak() || field->real_containing_oneof()) {
|
|
// Mark the field to prevent unintentional access through reflection.
|
|
// Don't use the top bit because that is for unused fields.
|
|
format("::_pbi::kInvalidFieldOffsetTag");
|
|
} else {
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$$1$, $2$)",
|
|
ShouldSplit(field, options_) ? "::Impl_::Split" : "",
|
|
ShouldSplit(field, options_)
|
|
? absl::StrCat(FieldName(field), "_")
|
|
: FieldMemberName(field, /*cold=*/false));
|
|
}
|
|
|
|
// Some information about a field is in the pdproto profile. The profile is
|
|
// only available at compile time. So we embed such information in the
|
|
// offset of the field, so that the information is available when
|
|
// reflectively accessing the field at run time.
|
|
//
|
|
// We embed whether the field is cold to the MSB of the offset, and whether
|
|
// the field is eagerly verified lazy or inlined string to the LSB of the
|
|
// offset.
|
|
|
|
if (ShouldSplit(field, options_)) {
|
|
format(" | ::_pbi::kSplitFieldOffsetMask /*split*/");
|
|
}
|
|
if (IsEagerlyVerifiedLazy(field, options_, scc_analyzer_)) {
|
|
format(" | 0x1u /*eagerly verified lazy*/");
|
|
} else if (IsStringInlined(field, options_)) {
|
|
format(" | 0x1u /*inlined*/");
|
|
}
|
|
format(",\n");
|
|
}
|
|
|
|
int count = 0;
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format("PROTOBUF_FIELD_OFFSET($classtype$, _impl_.$1$_),\n", oneof->name());
|
|
count++;
|
|
}
|
|
ABSL_CHECK_EQ(count, descriptor_->real_oneof_decl_count());
|
|
|
|
if (IsMapEntryMessage(descriptor_)) {
|
|
entries += 2;
|
|
format(
|
|
"0,\n"
|
|
"1,\n");
|
|
} else if (!has_bit_indices_.empty()) {
|
|
entries += has_bit_indices_.size();
|
|
for (int i = 0; i < has_bit_indices_.size(); i++) {
|
|
const std::string index =
|
|
has_bit_indices_[i] >= 0 ? absl::StrCat(has_bit_indices_[i]) : "~0u";
|
|
format("$1$,\n", index);
|
|
}
|
|
}
|
|
if (!inlined_string_indices_.empty()) {
|
|
entries += inlined_string_indices_.size();
|
|
for (int inlined_string_index : inlined_string_indices_) {
|
|
const std::string index =
|
|
inlined_string_index >= 0
|
|
? absl::StrCat(inlined_string_index, ", // inlined_string_index")
|
|
: "~0u,";
|
|
format("$1$\n", index);
|
|
}
|
|
}
|
|
|
|
return std::make_pair(entries, offsets);
|
|
}
|
|
|
|
void MessageGenerator::GenerateSharedConstructorCode(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
|
|
p->Emit(
|
|
{
|
|
{"impl_init",
|
|
[&] {
|
|
// Note: any fields without move/copy constructors can't be
|
|
// explicitly aggregate initialized pre-C++17.
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
p->Emit(R"cc(
|
|
/*decltype($extensions$)*/ {::_pbi::ArenaInitialized(), arena},
|
|
)cc");
|
|
}
|
|
if (!inlined_string_indices_.empty()) {
|
|
p->Emit(R"cc(
|
|
decltype($inlined_string_donated_array$){},
|
|
)cc");
|
|
}
|
|
bool need_to_emit_cached_size =
|
|
!HasSimpleBaseClass(descriptor_, options_);
|
|
if (!has_bit_indices_.empty()) {
|
|
p->Emit(R"cc(
|
|
decltype($has_bits$){},
|
|
)cc");
|
|
if (need_to_emit_cached_size) {
|
|
p->Emit(R"cc(
|
|
/*decltype($cached_size$)*/ {},
|
|
)cc");
|
|
need_to_emit_cached_size = false;
|
|
}
|
|
}
|
|
|
|
// Initialize member variables with arena constructor.
|
|
for (const auto* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_)) {
|
|
continue;
|
|
}
|
|
field_generators_.get(field).GenerateAggregateInitializer(p);
|
|
}
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
// We can't assign the default split to this->split without the
|
|
// const_cast because the former is a const. The const_cast is
|
|
// safe because we don't intend to modify the default split
|
|
// through this pointer, and we also expect the default split to
|
|
// be in the rodata section which is protected from mutation.
|
|
p->Emit(
|
|
{{"instance", DefaultInstanceName(descriptor_, options_,
|
|
/*split=*/true)}},
|
|
R"cc(
|
|
decltype($split$){const_cast<Impl_::Split*>(
|
|
reinterpret_cast<const Impl_::Split*>(&$instance$))},
|
|
)cc");
|
|
}
|
|
for (const auto* oneof : OneOfRange(descriptor_)) {
|
|
p->Emit({{"name", oneof->name()}},
|
|
R"cc(
|
|
decltype(_impl_.$name$_){},
|
|
)cc");
|
|
}
|
|
|
|
if (need_to_emit_cached_size) {
|
|
p->Emit(R"cc(
|
|
/*decltype($cached_size$)*/ {},
|
|
)cc");
|
|
}
|
|
|
|
if (descriptor_->real_oneof_decl_count() != 0) {
|
|
p->Emit(R"cc(
|
|
/*decltype($oneof_case$)*/ {},
|
|
)cc");
|
|
}
|
|
if (num_weak_fields_ > 0) {
|
|
p->Emit(R"cc(
|
|
decltype($weak_field_map$){arena},
|
|
)cc");
|
|
}
|
|
if (IsAnyMessage(descriptor_, options_)) {
|
|
// AnyMetadata has no move constructor.
|
|
p->Emit(R"cc(
|
|
/*decltype($any_metadata$)*/ {&_impl_.type_url_,
|
|
&_impl_.value_},
|
|
)cc");
|
|
}
|
|
}},
|
|
{"inlined_strings_init",
|
|
[&] {
|
|
if (inlined_string_indices_.empty()) return;
|
|
// Donate inline string fields.
|
|
// The last bit is the tracking bit for registering ArenaDtor. The
|
|
// bit is 1 means ArenaDtor is not registered on construction, and
|
|
// on demand register is needed.
|
|
p->Emit(
|
|
{
|
|
{"mask",
|
|
NeedsArenaDestructor() == ArenaDtorNeeds::kOnDemand
|
|
? "~0u"
|
|
: "0xFFFFFFFEu"},
|
|
{"init_body",
|
|
[&] {
|
|
for (size_t i = 1; i < InlinedStringDonatedSize();
|
|
++i) {
|
|
p->Emit({{"i", i}},
|
|
R"cc(
|
|
$inlined_string_donated_array$[$i$] = ~0u;
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
if (arena != nullptr) {
|
|
$inlined_string_donated_array$[0] = $mask$;
|
|
$init_body$;
|
|
}
|
|
)cc");
|
|
}},
|
|
{"field_ctor_code",
|
|
[&] {
|
|
for (const FieldDescriptor* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_)) {
|
|
continue;
|
|
}
|
|
field_generators_.get(field).GenerateConstructorCode(p);
|
|
}
|
|
}},
|
|
{"force_allocation",
|
|
[&] {
|
|
if (!ShouldForceAllocationOnConstruction(descriptor_, options_))
|
|
return;
|
|
p->Emit(R"cc(
|
|
//~ force alignment
|
|
#ifdef PROTOBUF_FORCE_ALLOCATION_ON_CONSTRUCTION
|
|
$mutable_unknown_fields$;
|
|
#endif // PROTOBUF_FORCE_ALLOCATION_ON_CONSTRUCTION
|
|
)cc");
|
|
}},
|
|
{"clear_oneofs",
|
|
[&] {
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
p->Emit({{"name", oneof->name()}},
|
|
R"cc(
|
|
clear_has_$name$();
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
inline void $classname$::SharedCtor(::_pb::Arena* arena) {
|
|
(void)arena;
|
|
new (&_impl_) Impl_{
|
|
$impl_init$,
|
|
};
|
|
$inlined_strings_init$;
|
|
$field_ctor_code$;
|
|
$force_allocation$;
|
|
$clear_oneofs$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateInitDefaultSplitInstance(io::Printer* p) {
|
|
if (!ShouldSplit(descriptor_, options_)) return;
|
|
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
p->Emit("\n");
|
|
for (const auto* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_)) {
|
|
field_generators_.get(field).GenerateConstexprAggregateInitializer(p);
|
|
}
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateSharedDestructorCode(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
auto emit_field_dtors = [&](bool split_fields) {
|
|
// Write the destructors for each field except oneof members.
|
|
// optimized_order_ does not contain oneof fields.
|
|
for (const auto* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_) != split_fields) continue;
|
|
field_generators_.get(field).GenerateDestructorCode(p);
|
|
}
|
|
};
|
|
p->Emit(
|
|
{
|
|
{"extensions_dtor",
|
|
[&] {
|
|
if (descriptor_->extension_range_count() == 0) return;
|
|
p->Emit(R"cc(
|
|
$extensions$.~ExtensionSet();
|
|
)cc");
|
|
}},
|
|
{"field_dtors", [&] { emit_field_dtors(/* split_fields= */ false); }},
|
|
{"split_field_dtors",
|
|
[&] {
|
|
if (!ShouldSplit(descriptor_, options_)) return;
|
|
p->Emit(
|
|
{
|
|
{"split_field_dtors_impl",
|
|
[&] { emit_field_dtors(/* split_fields= */ true); }},
|
|
},
|
|
R"cc(
|
|
if (!IsSplitMessageDefault()) {
|
|
auto* $cached_split_ptr$ = $split$;
|
|
$split_field_dtors_impl$;
|
|
delete $cached_split_ptr$;
|
|
}
|
|
)cc");
|
|
}},
|
|
{"oneof_field_dtors",
|
|
[&] {
|
|
for (const auto* oneof : OneOfRange(descriptor_)) {
|
|
p->Emit({{"name", oneof->name()}},
|
|
R"cc(
|
|
if (has_$name$()) {
|
|
clear_$name$();
|
|
}
|
|
)cc");
|
|
}
|
|
}},
|
|
{"weak_fields_dtor",
|
|
[&] {
|
|
if (num_weak_fields_ == 0) return;
|
|
// Generate code to destruct oneofs. Clearing should do the work.
|
|
p->Emit(R"cc(
|
|
$weak_field_map$.ClearAll();
|
|
)cc");
|
|
}},
|
|
{"any_metadata_dtor",
|
|
[&] {
|
|
if (!IsAnyMessage(descriptor_, options_)) return;
|
|
p->Emit(R"cc(
|
|
$any_metadata$.~AnyMetadata();
|
|
)cc");
|
|
}},
|
|
},
|
|
R"cc(
|
|
inline void $classname$::SharedDtor() {
|
|
$DCHK$(GetArenaForAllocation() == nullptr);
|
|
$extensions_dtor$;
|
|
$field_dtors$;
|
|
$split_field_dtors$;
|
|
$oneof_field_dtors$;
|
|
$weak_fields_dtor$;
|
|
$any_metadata_dtor$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
ArenaDtorNeeds MessageGenerator::NeedsArenaDestructor() const {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return ArenaDtorNeeds::kNone;
|
|
ArenaDtorNeeds needs = ArenaDtorNeeds::kNone;
|
|
for (const auto* field : FieldRange(descriptor_)) {
|
|
needs =
|
|
std::max(needs, field_generators_.get(field).NeedsArenaDestructor());
|
|
}
|
|
return needs;
|
|
}
|
|
|
|
void MessageGenerator::GenerateArenaDestructorCode(io::Printer* p) {
|
|
ABSL_CHECK(NeedsArenaDestructor() > ArenaDtorNeeds::kNone);
|
|
auto emit_field_dtors = [&](bool split_fields) {
|
|
// Write the destructors for each field except oneof members.
|
|
// optimized_order_ does not contain oneof fields.
|
|
for (const auto* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_) != split_fields) continue;
|
|
field_generators_.get(field).GenerateArenaDestructorCode(p);
|
|
}
|
|
};
|
|
// This code is placed inside a static method, rather than an ordinary one,
|
|
// since that simplifies Arena's destructor list (ordinary function pointers
|
|
// rather than member function pointers). _this is the object being
|
|
// destructed.
|
|
p->Emit(
|
|
{
|
|
{"field_dtors", [&] { emit_field_dtors(/* split_fields= */ false); }},
|
|
{"split_field_dtors",
|
|
[&] {
|
|
if (!ShouldSplit(descriptor_, options_)) return;
|
|
p->Emit(
|
|
{
|
|
{"split_field_dtors_impl",
|
|
[&] { emit_field_dtors(/* split_fields= */ true); }},
|
|
},
|
|
R"cc(
|
|
if (!_this->IsSplitMessageDefault()) {
|
|
$split_field_dtors_impl$;
|
|
}
|
|
)cc");
|
|
}},
|
|
{"oneof_field_dtors",
|
|
[&] {
|
|
for (const auto* oneof : OneOfRange(descriptor_)) {
|
|
for (const auto* field : FieldRange(oneof)) {
|
|
field_generators_.get(field).GenerateArenaDestructorCode(p);
|
|
}
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
void $classname$::ArenaDtor(void* object) {
|
|
$classname$* _this = reinterpret_cast<$classname$*>(object);
|
|
$field_dtors$;
|
|
$split_field_dtors$;
|
|
$oneof_field_dtors$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateConstexprConstructor(io::Printer* p) {
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
auto c = p->WithVars({{"constexpr", "PROTOBUF_CONSTEXPR"}});
|
|
Formatter format(p);
|
|
|
|
if (IsMapEntryMessage(descriptor_) || !HasImplData(descriptor_, options_)) {
|
|
p->Emit(R"cc(
|
|
//~ Templatize constexpr constructor as a workaround for a bug in gcc 12
|
|
//~ (warning in gcc 13).
|
|
template <typename>
|
|
$constexpr$ $classname$::$classname$(::_pbi::ConstantInitialized) {}
|
|
)cc");
|
|
return;
|
|
}
|
|
bool need_to_emit_cached_size = !HasSimpleBaseClass(descriptor_, options_);
|
|
p->Emit(
|
|
{
|
|
{"init_body",
|
|
[&] {
|
|
p->Emit("\n");
|
|
auto indent = p->WithIndent();
|
|
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
p->Emit(R"cc(
|
|
/*decltype($extensions$)*/ {},
|
|
)cc");
|
|
}
|
|
if (!inlined_string_indices_.empty()) {
|
|
p->Emit(R"cc(
|
|
/*decltype($inlined_string_donated_array$)*/ {},
|
|
)cc");
|
|
}
|
|
if (!has_bit_indices_.empty()) {
|
|
p->Emit(R"cc(
|
|
/*decltype($has_bits$)*/ {},
|
|
)cc");
|
|
if (need_to_emit_cached_size) {
|
|
p->Emit(R"cc(
|
|
/*decltype($cached_size$)*/ {},
|
|
)cc");
|
|
need_to_emit_cached_size = false;
|
|
}
|
|
}
|
|
for (auto* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_)) {
|
|
continue;
|
|
}
|
|
field_generators_.get(field)
|
|
.GenerateConstexprAggregateInitializer(p);
|
|
}
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
p->Emit({{"name", DefaultInstanceName(descriptor_, options_,
|
|
/*split=*/true)}},
|
|
R"cc(
|
|
/*decltype($split$)*/ const_cast<Impl_::Split*>(
|
|
&$name$._instance),
|
|
)cc");
|
|
}
|
|
for (auto* oneof : OneOfRange(descriptor_)) {
|
|
p->Emit({{"name", oneof->name()}},
|
|
R"cc(
|
|
/*decltype(_impl_.$name$_)*/ {},
|
|
)cc");
|
|
}
|
|
if (need_to_emit_cached_size) {
|
|
p->Emit(R"cc(
|
|
/*decltype($cached_size$)*/ {},
|
|
)cc");
|
|
}
|
|
if (descriptor_->real_oneof_decl_count() != 0) {
|
|
p->Emit(R"cc(
|
|
/*decltype($oneof_case$)*/ {},
|
|
)cc");
|
|
}
|
|
if (num_weak_fields_) {
|
|
p->Emit(R"cc(
|
|
/*decltype($weak_field_map$)*/ {},
|
|
)cc");
|
|
}
|
|
if (IsAnyMessage(descriptor_, options_)) {
|
|
p->Emit(R"cc(
|
|
/*decltype($any_metadata$)*/ {&_impl_.type_url_,
|
|
&_impl_.value_},
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
//~ Templatize constexpr constructor as a workaround for a bug in gcc 12
|
|
//~ (warning in gcc 13).
|
|
template <typename>
|
|
$constexpr$ $classname$::$classname$(::_pbi::ConstantInitialized)
|
|
: _impl_{$init_body$} {}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateCopyConstructorBody(io::Printer* p) const {
|
|
Formatter format(p);
|
|
|
|
const RunMap runs =
|
|
FindRuns(optimized_order_, [this](const FieldDescriptor* field) {
|
|
return IsPOD(field) && !ShouldSplit(field, options_);
|
|
});
|
|
|
|
std::string pod_template =
|
|
"::memcpy(&$first$, &from.$first$,\n"
|
|
" static_cast<::size_t>(reinterpret_cast<char*>(&$last$) -\n"
|
|
" reinterpret_cast<char*>(&$first$)) + sizeof($last$));\n";
|
|
|
|
if (ShouldForceAllocationOnConstruction(descriptor_, options_)) {
|
|
format(
|
|
"#ifdef PROTOBUF_FORCE_ALLOCATION_ON_CONSTRUCTION\n"
|
|
"$mutable_unknown_fields$;\n"
|
|
"#endif // PROTOBUF_FORCE_ALLOCATION_ON_CONSTRUCTION\n");
|
|
}
|
|
|
|
for (size_t i = 0; i < optimized_order_.size(); ++i) {
|
|
const FieldDescriptor* field = optimized_order_[i];
|
|
if (ShouldSplit(field, options_)) {
|
|
continue;
|
|
}
|
|
const auto it = runs.find(field);
|
|
|
|
// We only apply the memset technique to runs of more than one field, as
|
|
// assignment is better than memset for generated code clarity.
|
|
if (it != runs.end() && it->second > 1) {
|
|
// Use a memset, then skip run_length fields.
|
|
const size_t run_length = it->second;
|
|
const std::string first_field_name =
|
|
FieldMemberName(field, /*cold=*/false);
|
|
const std::string last_field_name =
|
|
FieldMemberName(optimized_order_[i + run_length - 1], /*cold=*/false);
|
|
|
|
auto v = p->WithVars({
|
|
{"first", first_field_name},
|
|
{"last", last_field_name},
|
|
});
|
|
format(pod_template.c_str());
|
|
|
|
i += run_length - 1;
|
|
// ++i at the top of the loop.
|
|
} else {
|
|
field_generators_.get(field).GenerateCopyConstructorCode(p);
|
|
}
|
|
}
|
|
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format("if (!from.IsSplitMessageDefault()) {\n");
|
|
format.Indent();
|
|
format("_this->PrepareSplitMessageForWrite();\n");
|
|
// TODO(b/122856539): cache the split pointers.
|
|
for (auto field : optimized_order_) {
|
|
if (ShouldSplit(field, options_)) {
|
|
field_generators_.get(field).GenerateCopyConstructorCode(p);
|
|
}
|
|
}
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
}
|
|
|
|
bool MessageGenerator::ImplHasCopyCtor() const {
|
|
if (ShouldSplit(descriptor_, options_)) return false;
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return false;
|
|
if (descriptor_->extension_range_count() > 0) return false;
|
|
if (descriptor_->real_oneof_decl_count() > 0) return false;
|
|
if (num_weak_fields_ > 0) return false;
|
|
|
|
// If the message contains only scalar fields (ints and enums),
|
|
// then we can copy the entire impl_ section with a single statement.
|
|
for (const auto* field : optimized_order_) {
|
|
if (field->is_repeated()) return false;
|
|
if (field->is_extension()) return false;
|
|
switch (field->cpp_type()) {
|
|
case FieldDescriptor::CPPTYPE_ENUM:
|
|
case FieldDescriptor::CPPTYPE_INT32:
|
|
case FieldDescriptor::CPPTYPE_INT64:
|
|
case FieldDescriptor::CPPTYPE_UINT32:
|
|
case FieldDescriptor::CPPTYPE_UINT64:
|
|
case FieldDescriptor::CPPTYPE_FLOAT:
|
|
case FieldDescriptor::CPPTYPE_DOUBLE:
|
|
case FieldDescriptor::CPPTYPE_BOOL:
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void MessageGenerator::GenerateCopyConstructorBodyImpl(io::Printer* p) const {
|
|
if (!HasImplData(descriptor_, options_)) return;
|
|
|
|
p->Emit(
|
|
{{"initializer",
|
|
[&] {
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
p->Emit(R"cc(
|
|
/*decltype($extensions$)*/ {},
|
|
)cc");
|
|
}
|
|
if (!inlined_string_indices_.empty()) {
|
|
// Do not copy inlined_string_donated_, because this is not an
|
|
// arena constructor.
|
|
p->Emit(R"cc(
|
|
decltype($inlined_string_donated_array$){},
|
|
)cc");
|
|
}
|
|
|
|
bool need_to_emit_cached_size =
|
|
!HasSimpleBaseClass(descriptor_, options_);
|
|
if (!has_bit_indices_.empty()) {
|
|
p->Emit(R"cc(
|
|
decltype($has_bits$){from.$has_bits$},
|
|
)cc");
|
|
if (need_to_emit_cached_size) {
|
|
p->Emit(R"cc(
|
|
/*decltype($cached_size$)*/ {},
|
|
)cc");
|
|
need_to_emit_cached_size = false;
|
|
}
|
|
}
|
|
// Initialize member variables with arena constructor.
|
|
for (const auto* field : optimized_order_) {
|
|
if (ShouldSplit(field, options_)) continue;
|
|
field_generators_.get(field).GenerateCopyAggregateInitializer(p);
|
|
}
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
p->Emit({{"name", DefaultInstanceName(descriptor_, options_,
|
|
/*split=*/true)}},
|
|
R"cc(
|
|
decltype($split$){const_cast<Impl_::Split*>(
|
|
reinterpret_cast<const Impl_::Split*>(&$name$))},
|
|
)cc");
|
|
}
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
p->Emit({{"name", oneof->name()}},
|
|
R"cc(
|
|
decltype(_impl_.$name$_){},
|
|
)cc");
|
|
}
|
|
if (need_to_emit_cached_size) {
|
|
p->Emit(R"cc(
|
|
/*decltype($cached_size$)*/ {},
|
|
)cc");
|
|
need_to_emit_cached_size = false;
|
|
}
|
|
if (descriptor_->real_oneof_decl_count() > 0) {
|
|
p->Emit(R"cc(
|
|
/*decltype($oneof_case$)*/ {},
|
|
)cc");
|
|
}
|
|
if (num_weak_fields_ > 0) {
|
|
p->Emit(R"cc(
|
|
decltype($weak_field_map$){from.$weak_field_map$},
|
|
)cc");
|
|
}
|
|
if (IsAnyMessage(descriptor_, options_)) {
|
|
p->Emit(R"cc(
|
|
/*decltype($any_metadata$)*/ {
|
|
&_impl_.type_url_,
|
|
&_impl_.value_,
|
|
},
|
|
)cc");
|
|
}
|
|
}}},
|
|
R"cc(
|
|
new (&_impl_) Impl_{
|
|
$initializer$,
|
|
};
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateCopyConstructorBodyOneofs(io::Printer* p) const {
|
|
// Copy oneof fields. Oneof field requires oneof case check.
|
|
for (const auto* oneof : OneOfRange(descriptor_)) {
|
|
p->Emit(
|
|
{
|
|
{"name", oneof->name()},
|
|
{"NAME", absl::AsciiStrToUpper(oneof->name())},
|
|
{"cases",
|
|
[&] {
|
|
for (const auto* field : FieldRange(oneof)) {
|
|
p->Emit(
|
|
{{"Name", UnderscoresToCamelCase(field->name(), true)},
|
|
{"body",
|
|
[&] {
|
|
field_generators_.get(field).GenerateMergingCode(p);
|
|
}}},
|
|
R"cc(
|
|
case k$Name$: {
|
|
$body$;
|
|
break;
|
|
}
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
clear_has_$name$();
|
|
switch (from.$name$_case()) {
|
|
$cases$;
|
|
case $NAME$_NOT_SET: {
|
|
break;
|
|
}
|
|
}
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateStructors(io::Printer* p) {
|
|
p->Emit(
|
|
{
|
|
{"superclass", SuperClassName(descriptor_, options_)},
|
|
{"ctor_body",
|
|
[&] {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
p->Emit(R"cc(SharedCtor(arena);)cc");
|
|
if (NeedsArenaDestructor() == ArenaDtorNeeds::kRequired) {
|
|
p->Emit(R"cc(
|
|
if (arena != nullptr) {
|
|
arena->OwnCustomDestructor(this, &$classname$::ArenaDtor);
|
|
}
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
$classname$::$classname$(::$proto_ns$::Arena* arena)
|
|
: $superclass$(arena) {
|
|
$ctor_body$;
|
|
// @@protoc_insertion_point(arena_constructor:$full_name$)
|
|
}
|
|
)cc");
|
|
|
|
// Generate the copy constructor.
|
|
if (UsingImplicitWeakFields(descriptor_->file(), options_)) {
|
|
// If we are in lite mode and using implicit weak fields, we generate a
|
|
// one-liner copy constructor that delegates to MergeFrom. This saves some
|
|
// code size and also cuts down on the complexity of implicit weak fields.
|
|
// We might eventually want to do this for all lite protos.
|
|
p->Emit(R"cc(
|
|
$classname$::$classname$(const $classname$& from) : $classname$() {
|
|
MergeFrom(from);
|
|
}
|
|
)cc");
|
|
} else if (ImplHasCopyCtor()) {
|
|
p->Emit(R"cc(
|
|
$classname$::$classname$(const $classname$& from)
|
|
: $superclass$(), _impl_(from._impl_) {
|
|
_internal_metadata_.MergeFrom<$unknown_fields_type$>(
|
|
from._internal_metadata_);
|
|
// @@protoc_insertion_point(copy_constructor:$full_name$)
|
|
}
|
|
)cc");
|
|
} else {
|
|
p->Emit(
|
|
{
|
|
{"copy_impl", [&] { GenerateCopyConstructorBodyImpl(p); }},
|
|
{"copy_extensions",
|
|
[&] {
|
|
if (descriptor_->extension_range_count() == 0) return;
|
|
p->Emit(R"cc(
|
|
$extensions$.MergeFrom(internal_default_instance(),
|
|
from.$extensions$);
|
|
)cc");
|
|
}},
|
|
{"copy_body", [&] { GenerateCopyConstructorBody(p); }},
|
|
{"copy_oneofs", [&] { GenerateCopyConstructorBodyOneofs(p); }},
|
|
},
|
|
R"cc(
|
|
$classname$::$classname$(const $classname$& from) : $superclass$() {
|
|
$classname$* const _this = this;
|
|
(void)_this;
|
|
$copy_impl$;
|
|
_internal_metadata_.MergeFrom<$unknown_fields_type$>(
|
|
from._internal_metadata_);
|
|
$copy_extensions$;
|
|
$copy_body$;
|
|
$copy_oneofs$;
|
|
|
|
// @@protoc_insertion_point(copy_constructor:$full_name$)
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
// Generate the shared constructor code.
|
|
GenerateSharedConstructorCode(p);
|
|
|
|
// Generate the destructor.
|
|
if (HasSimpleBaseClass(descriptor_, options_)) {
|
|
// For messages using simple base classes, having no destructor
|
|
// allows our vtable to share the same destructor as every other
|
|
// message with a simple base class. This works only as long as
|
|
// we have no fields needing destruction, of course. (No strings
|
|
// or extensions)
|
|
} else {
|
|
p->Emit(
|
|
R"cc(
|
|
$classname$::~$classname$() {
|
|
// @@protoc_insertion_point(destructor:$full_name$)
|
|
_internal_metadata_.Delete<$unknown_fields_type$>();
|
|
SharedDtor();
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
// Generate the shared destructor code.
|
|
GenerateSharedDestructorCode(p);
|
|
|
|
// Generate the arena-specific destructor code.
|
|
if (NeedsArenaDestructor() > ArenaDtorNeeds::kNone) {
|
|
GenerateArenaDestructorCode(p);
|
|
}
|
|
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
// Generate SetCachedSize.
|
|
p->Emit(R"cc(
|
|
void $classname$::SetCachedSize(int size) const {
|
|
$cached_size$.Set(size);
|
|
}
|
|
)cc");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateSourceInProto2Namespace(io::Printer* p) {
|
|
auto v = p->WithVars(ClassVars(descriptor_, options_));
|
|
auto t = p->WithVars(MakeTrackerCalls(descriptor_, options_));
|
|
Formatter format(p);
|
|
if (ShouldGenerateExternSpecializations(options_)) {
|
|
format(
|
|
"template<> "
|
|
"PROTOBUF_NOINLINE $classtype$*\n"
|
|
"Arena::CreateMaybeMessage< $classtype$ >(Arena* arena) {\n"
|
|
" return Arena::CreateMessageInternal< $classtype$ >(arena);\n"
|
|
"}\n");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateClear(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
Formatter format(p);
|
|
|
|
// The maximum number of bytes we will memset to zero without checking their
|
|
// hasbit to see if a zero-init is necessary.
|
|
const int kMaxUnconditionalPrimitiveBytesClear = 4;
|
|
|
|
format(
|
|
"PROTOBUF_NOINLINE void $classname$::Clear() {\n"
|
|
"// @@protoc_insertion_point(message_clear_start:$full_name$)\n");
|
|
format.Indent();
|
|
|
|
format(
|
|
// TODO(jwb): It would be better to avoid emitting this if it is not used,
|
|
// rather than emitting a workaround for the resulting warning.
|
|
"$uint32$ cached_has_bits = 0;\n"
|
|
"// Prevent compiler warnings about cached_has_bits being unused\n"
|
|
"(void) cached_has_bits;\n\n");
|
|
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
format("$extensions$.Clear();\n");
|
|
}
|
|
|
|
// Collect fields into chunks. Each chunk may have an if() condition that
|
|
// checks all hasbits in the chunk and skips it if none are set.
|
|
int zero_init_bytes = 0;
|
|
for (const auto& field : optimized_order_) {
|
|
if (CanClearByZeroing(field)) {
|
|
zero_init_bytes += EstimateAlignmentSize(field);
|
|
}
|
|
}
|
|
bool merge_zero_init = zero_init_bytes > kMaxUnconditionalPrimitiveBytesClear;
|
|
int chunk_count = 0;
|
|
|
|
std::vector<FieldChunk> chunks = CollectFields(
|
|
optimized_order_, options_,
|
|
[&](const FieldDescriptor* a, const FieldDescriptor* b) -> bool {
|
|
chunk_count++;
|
|
// This predicate guarantees that there is only a single zero-init
|
|
// (memset) per chunk, and if present it will be at the beginning.
|
|
bool same =
|
|
HasByteIndex(a) == HasByteIndex(b) &&
|
|
a->is_repeated() == b->is_repeated() &&
|
|
ShouldSplit(a, options_) == ShouldSplit(b, options_) &&
|
|
(CanClearByZeroing(a) == CanClearByZeroing(b) ||
|
|
(CanClearByZeroing(a) && (chunk_count == 1 || merge_zero_init)));
|
|
if (!same) chunk_count = 0;
|
|
return same;
|
|
});
|
|
|
|
auto it = chunks.begin();
|
|
auto end = chunks.end();
|
|
int cached_has_word_index = -1;
|
|
while (it != end) {
|
|
auto next = FindNextUnequalChunk(it, end, MayGroupChunksForHaswordsCheck);
|
|
bool has_haswords_check = MaybeEmitHaswordsCheck(
|
|
it, next, options_, has_bit_indices_, cached_has_word_index, "", p);
|
|
|
|
bool has_default_split_check = !it->fields.empty() && it->should_split;
|
|
if (has_default_split_check) {
|
|
// Some fields are cleared without checking has_bit. So we add the
|
|
// condition here to avoid writing to the default split instance.
|
|
format("if (!IsSplitMessageDefault()) {\n");
|
|
format.Indent();
|
|
}
|
|
while (it != next) {
|
|
const std::vector<const FieldDescriptor*>& fields = it->fields;
|
|
bool chunk_is_split = it->should_split;
|
|
ABSL_CHECK_EQ(has_default_split_check, chunk_is_split);
|
|
|
|
const FieldDescriptor* memset_start = nullptr;
|
|
const FieldDescriptor* memset_end = nullptr;
|
|
bool saw_non_zero_init = false;
|
|
|
|
for (const auto& field : fields) {
|
|
if (CanClearByZeroing(field)) {
|
|
ABSL_CHECK(!saw_non_zero_init);
|
|
if (!memset_start) memset_start = field;
|
|
memset_end = field;
|
|
} else {
|
|
saw_non_zero_init = true;
|
|
}
|
|
}
|
|
|
|
// Whether we wrap this chunk in:
|
|
// if (cached_has_bits & <chunk hasbits) { /* chunk. */ }
|
|
// We can omit the if() for chunk size 1, or if our fields do not have
|
|
// hasbits. I don't understand the rationale for the last part of the
|
|
// condition, but it matches the old logic.
|
|
const bool have_outer_if =
|
|
HasBitIndex(fields.front()) != kNoHasbit && fields.size() > 1 &&
|
|
(memset_end != fields.back() || merge_zero_init);
|
|
|
|
if (have_outer_if) {
|
|
// Emit an if() that will let us skip the whole chunk if none are set.
|
|
uint32_t chunk_mask = GenChunkMask(fields, has_bit_indices_);
|
|
std::string chunk_mask_str =
|
|
absl::StrCat(absl::Hex(chunk_mask, absl::kZeroPad8));
|
|
|
|
// Check (up to) 8 has_bits at a time if we have more than one field in
|
|
// this chunk. Due to field layout ordering, we may check
|
|
// _has_bits_[last_chunk * 8 / 32] multiple times.
|
|
ABSL_DCHECK_LE(2, popcnt(chunk_mask));
|
|
ABSL_DCHECK_GE(8, popcnt(chunk_mask));
|
|
|
|
if (cached_has_word_index != HasWordIndex(fields.front())) {
|
|
cached_has_word_index = HasWordIndex(fields.front());
|
|
format("cached_has_bits = $has_bits$[$1$];\n", cached_has_word_index);
|
|
}
|
|
format("if (cached_has_bits & 0x$1$u) {\n", chunk_mask_str);
|
|
format.Indent();
|
|
}
|
|
|
|
if (memset_start) {
|
|
if (memset_start == memset_end) {
|
|
// For clarity, do not memset a single field.
|
|
field_generators_.get(memset_start).GenerateMessageClearingCode(p);
|
|
} else {
|
|
ABSL_CHECK_EQ(chunk_is_split, ShouldSplit(memset_start, options_));
|
|
ABSL_CHECK_EQ(chunk_is_split, ShouldSplit(memset_end, options_));
|
|
format(
|
|
"::memset(&$1$, 0, static_cast<::size_t>(\n"
|
|
" reinterpret_cast<char*>(&$2$) -\n"
|
|
" reinterpret_cast<char*>(&$1$)) + sizeof($2$));\n",
|
|
FieldMemberName(memset_start, chunk_is_split),
|
|
FieldMemberName(memset_end, chunk_is_split));
|
|
}
|
|
}
|
|
|
|
// Clear all non-zero-initializable fields in the chunk.
|
|
for (const auto& field : fields) {
|
|
if (CanClearByZeroing(field)) continue;
|
|
// It's faster to just overwrite primitive types, but we should only
|
|
// clear strings and messages if they were set.
|
|
//
|
|
// TODO(kenton): Let the CppFieldGenerator decide this somehow.
|
|
bool have_enclosing_if =
|
|
HasBitIndex(field) != kNoHasbit &&
|
|
(field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE ||
|
|
field->cpp_type() == FieldDescriptor::CPPTYPE_STRING);
|
|
|
|
if (have_enclosing_if) {
|
|
PrintPresenceCheck(field, has_bit_indices_, p,
|
|
&cached_has_word_index);
|
|
format.Indent();
|
|
}
|
|
|
|
field_generators_.get(field).GenerateMessageClearingCode(p);
|
|
|
|
if (have_enclosing_if) {
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
}
|
|
|
|
if (have_outer_if) {
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
// To next chunk.
|
|
++it;
|
|
}
|
|
|
|
if (has_default_split_check) {
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
if (has_haswords_check) {
|
|
p->Outdent();
|
|
p->Emit(R"cc(
|
|
}
|
|
)cc");
|
|
|
|
// Reset here as it may have been updated in just closed if statement.
|
|
cached_has_word_index = -1;
|
|
}
|
|
}
|
|
|
|
// Step 4: Unions.
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format("clear_$1$();\n", oneof->name());
|
|
}
|
|
|
|
if (num_weak_fields_) {
|
|
format("$weak_field_map$.ClearAll();\n");
|
|
}
|
|
|
|
// We don't clear donated status.
|
|
|
|
if (!has_bit_indices_.empty()) {
|
|
// Step 5: Everything else.
|
|
format("$has_bits$.Clear();\n");
|
|
}
|
|
|
|
format("_internal_metadata_.Clear<$unknown_fields_type$>();\n");
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
void MessageGenerator::GenerateOneofClear(io::Printer* p) {
|
|
// Generated function clears the active field and union case (e.g. foo_case_).
|
|
int i = 0;
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
Formatter format(p);
|
|
auto v = p->WithVars({{"oneofname", oneof->name()}});
|
|
|
|
format(
|
|
"void $classname$::clear_$oneofname$() {\n"
|
|
"// @@protoc_insertion_point(one_of_clear_start:$full_name$)\n");
|
|
format.Indent();
|
|
format("switch ($oneofname$_case()) {\n");
|
|
format.Indent();
|
|
for (auto field : FieldRange(oneof)) {
|
|
format("case k$1$: {\n", UnderscoresToCamelCase(field->name(), true));
|
|
format.Indent();
|
|
// We clear only allocated objects in oneofs
|
|
if (!IsStringOrMessage(field)) {
|
|
format("// No need to clear\n");
|
|
} else {
|
|
field_generators_.get(field).GenerateClearingCode(p);
|
|
}
|
|
format("break;\n");
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
format(
|
|
"case $1$_NOT_SET: {\n"
|
|
" break;\n"
|
|
"}\n",
|
|
absl::AsciiStrToUpper(oneof->name()));
|
|
format.Outdent();
|
|
format(
|
|
"}\n"
|
|
"$oneof_case$[$1$] = $2$_NOT_SET;\n",
|
|
i, absl::AsciiStrToUpper(oneof->name()));
|
|
format.Outdent();
|
|
format(
|
|
"}\n"
|
|
"\n");
|
|
i++;
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateSwap(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
Formatter format(p);
|
|
|
|
format("void $classname$::InternalSwap($classname$* other) {\n");
|
|
format.Indent();
|
|
format("using std::swap;\n");
|
|
|
|
if (HasGeneratedMethods(descriptor_->file(), options_)) {
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
format(
|
|
"$extensions$.InternalSwap(&other->$extensions$);"
|
|
"\n");
|
|
}
|
|
|
|
if (HasNonSplitOptionalString(descriptor_, options_)) {
|
|
format(
|
|
"auto* lhs_arena = GetArenaForAllocation();\n"
|
|
"auto* rhs_arena = other->GetArenaForAllocation();\n");
|
|
}
|
|
format("_internal_metadata_.InternalSwap(&other->_internal_metadata_);\n");
|
|
|
|
if (!has_bit_indices_.empty()) {
|
|
for (int i = 0; i < HasBitsSize(); ++i) {
|
|
format("swap($has_bits$[$1$], other->$has_bits$[$1$]);\n", i);
|
|
}
|
|
}
|
|
|
|
// If possible, we swap several fields at once, including padding.
|
|
const RunMap runs =
|
|
FindRuns(optimized_order_, [this](const FieldDescriptor* field) {
|
|
return !ShouldSplit(field, options_) &&
|
|
HasTrivialSwap(field, options_, scc_analyzer_);
|
|
});
|
|
|
|
for (size_t i = 0; i < optimized_order_.size(); ++i) {
|
|
const FieldDescriptor* field = optimized_order_[i];
|
|
if (ShouldSplit(field, options_)) {
|
|
continue;
|
|
}
|
|
const auto it = runs.find(field);
|
|
|
|
// We only apply the memswap technique to runs of more than one field, as
|
|
// `swap(field_, other.field_)` is better than
|
|
// `memswap<...>(&field_, &other.field_)` for generated code readability.
|
|
if (it != runs.end() && it->second > 1) {
|
|
// Use a memswap, then skip run_length fields.
|
|
const size_t run_length = it->second;
|
|
const std::string first_field_name =
|
|
FieldMemberName(field, /*cold=*/false);
|
|
const std::string last_field_name = FieldMemberName(
|
|
optimized_order_[i + run_length - 1], /*cold=*/false);
|
|
|
|
auto v = p->WithVars({
|
|
{"first", first_field_name},
|
|
{"last", last_field_name},
|
|
});
|
|
|
|
format(
|
|
"$pbi$::memswap<\n"
|
|
" PROTOBUF_FIELD_OFFSET($classname$, $last$)\n"
|
|
" + sizeof($classname$::$last$)\n"
|
|
" - PROTOBUF_FIELD_OFFSET($classname$, $first$)>(\n"
|
|
" reinterpret_cast<char*>(&$first$),\n"
|
|
" reinterpret_cast<char*>(&other->$first$));\n");
|
|
|
|
i += run_length - 1;
|
|
// ++i at the top of the loop.
|
|
} else {
|
|
field_generators_.get(field).GenerateSwappingCode(p);
|
|
}
|
|
}
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format("swap($split$, other->$split$);\n");
|
|
}
|
|
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format("swap(_impl_.$1$_, other->_impl_.$1$_);\n", oneof->name());
|
|
}
|
|
|
|
for (int i = 0; i < descriptor_->real_oneof_decl_count(); i++) {
|
|
format("swap($oneof_case$[$1$], other->$oneof_case$[$1$]);\n", i);
|
|
}
|
|
|
|
if (num_weak_fields_) {
|
|
format(
|
|
"$weak_field_map$.UnsafeArenaSwap(&other->$weak_field_map$)"
|
|
";\n");
|
|
}
|
|
|
|
if (!inlined_string_indices_.empty()) {
|
|
for (size_t i = 0; i < InlinedStringDonatedSize(); ++i) {
|
|
format(
|
|
"swap($inlined_string_donated_array$[$1$], "
|
|
"other->$inlined_string_donated_array$[$1$]);\n",
|
|
i);
|
|
}
|
|
}
|
|
} else {
|
|
format("GetReflection()->Swap(this, other);");
|
|
}
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
void MessageGenerator::GenerateMergeFrom(io::Printer* p) {
|
|
Formatter format(p);
|
|
if (!HasSimpleBaseClass(descriptor_, options_)) {
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
// We don't override the generalized MergeFrom (aka that which
|
|
// takes in the Message base class as a parameter); instead we just
|
|
// let the base Message::MergeFrom take care of it. The base MergeFrom
|
|
// knows how to quickly confirm the types exactly match, and if so, will
|
|
// use GetClassData() to retrieve the address of MergeImpl, which calls
|
|
// the fast MergeFrom overload. Most callers avoid all this by passing
|
|
// a "from" message that is the same type as the message being merged
|
|
// into, rather than a generic Message.
|
|
|
|
format(
|
|
"const ::$proto_ns$::Message::ClassData "
|
|
"$classname$::_class_data_ = {\n"
|
|
" ::$proto_ns$::Message::CopyWithSourceCheck,\n"
|
|
" $classname$::MergeImpl\n"
|
|
"};\n"
|
|
"const ::$proto_ns$::Message::ClassData*"
|
|
"$classname$::GetClassData() const { return &_class_data_; }\n"
|
|
"\n");
|
|
} else {
|
|
// Generate CheckTypeAndMergeFrom().
|
|
format(
|
|
"void $classname$::CheckTypeAndMergeFrom(\n"
|
|
" const ::$proto_ns$::MessageLite& from) {\n"
|
|
" MergeFrom(*::_pbi::DownCast<const $classname$*>(\n"
|
|
" &from));\n"
|
|
"}\n");
|
|
}
|
|
} else {
|
|
// In the simple case, we just define ClassData that vectors back to the
|
|
// simple implementation of Copy and Merge.
|
|
format(
|
|
"const ::$proto_ns$::Message::ClassData "
|
|
"$classname$::_class_data_ = {\n"
|
|
" $superclass$::CopyImpl,\n"
|
|
" $superclass$::MergeImpl,\n"
|
|
"};\n"
|
|
"const ::$proto_ns$::Message::ClassData*"
|
|
"$classname$::GetClassData() const { return &_class_data_; }\n"
|
|
"\n"
|
|
"\n");
|
|
}
|
|
}
|
|
|
|
void MessageGenerator::GenerateClassSpecificMergeImpl(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
// Generate the class-specific MergeFrom, which avoids the ABSL_CHECK and
|
|
// cast.
|
|
Formatter format(p);
|
|
if (!HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
// For messages that don't inherit from Message, just implement MergeFrom
|
|
// directly.
|
|
format(
|
|
"void $classname$::MergeFrom(const $classname$& from) {\n"
|
|
" $classname$* const _this = this;\n");
|
|
} else {
|
|
format(
|
|
"void $classname$::MergeImpl(::$proto_ns$::Message& to_msg, const "
|
|
"::$proto_ns$::Message& from_msg) {\n"
|
|
" auto* const _this = static_cast<$classname$*>(&to_msg);\n"
|
|
" auto& from = static_cast<const $classname$&>(from_msg);\n");
|
|
}
|
|
format.Indent();
|
|
format(
|
|
"$annotate_mergefrom$"
|
|
"// @@protoc_insertion_point(class_specific_merge_from_start:"
|
|
"$full_name$)\n");
|
|
format("$DCHK$_NE(&from, _this);\n");
|
|
|
|
format(
|
|
"$uint32$ cached_has_bits = 0;\n"
|
|
"(void) cached_has_bits;\n\n");
|
|
|
|
if (ShouldSplit(descriptor_, options_)) {
|
|
format(
|
|
"if (!from.IsSplitMessageDefault()) {\n"
|
|
" _this->PrepareSplitMessageForWrite();\n"
|
|
"}\n");
|
|
}
|
|
|
|
std::vector<FieldChunk> chunks = CollectFields(
|
|
optimized_order_, options_,
|
|
[&](const FieldDescriptor* a, const FieldDescriptor* b) -> bool {
|
|
return HasByteIndex(a) == HasByteIndex(b) &&
|
|
ShouldSplit(a, options_) == ShouldSplit(b, options_);
|
|
});
|
|
|
|
auto it = chunks.begin();
|
|
auto end = chunks.end();
|
|
// cached_has_word_index maintains that:
|
|
// cached_has_bits = from._has_bits_[cached_has_word_index]
|
|
// for cached_has_word_index >= 0
|
|
int cached_has_word_index = -1;
|
|
while (it != end) {
|
|
auto next = FindNextUnequalChunk(it, end, MayGroupChunksForHaswordsCheck);
|
|
bool has_haswords_check =
|
|
MaybeEmitHaswordsCheck(it, next, options_, has_bit_indices_,
|
|
cached_has_word_index, "from.", p);
|
|
|
|
while (it != next) {
|
|
const std::vector<const FieldDescriptor*>& fields = it->fields;
|
|
const bool have_outer_if =
|
|
fields.size() > 1 && HasByteIndex(fields.front()) != kNoHasbit;
|
|
|
|
if (have_outer_if) {
|
|
// Emit an if() that will let us skip the whole chunk if none are set.
|
|
uint32_t chunk_mask = GenChunkMask(fields, has_bit_indices_);
|
|
std::string chunk_mask_str =
|
|
absl::StrCat(absl::Hex(chunk_mask, absl::kZeroPad8));
|
|
|
|
// Check (up to) 8 has_bits at a time if we have more than one field in
|
|
// this chunk. Due to field layout ordering, we may check
|
|
// _has_bits_[last_chunk * 8 / 32] multiple times.
|
|
ABSL_DCHECK_LE(2, popcnt(chunk_mask));
|
|
ABSL_DCHECK_GE(8, popcnt(chunk_mask));
|
|
|
|
if (cached_has_word_index != HasWordIndex(fields.front())) {
|
|
cached_has_word_index = HasWordIndex(fields.front());
|
|
format("cached_has_bits = from.$has_bits$[$1$];\n",
|
|
cached_has_word_index);
|
|
}
|
|
|
|
format("if (cached_has_bits & 0x$1$u) {\n", chunk_mask_str);
|
|
format.Indent();
|
|
}
|
|
|
|
// Go back and emit merging code for each of the fields we processed.
|
|
bool deferred_has_bit_changes = false;
|
|
for (const auto* field : fields) {
|
|
const auto& generator = field_generators_.get(field);
|
|
|
|
if (field->is_repeated()) {
|
|
generator.GenerateMergingCode(p);
|
|
} else if (field->is_optional() && !HasHasbit(field)) {
|
|
// Merge semantics without true field presence: primitive fields are
|
|
// merged only if non-zero (numeric) or non-empty (string).
|
|
bool have_enclosing_if =
|
|
EmitFieldNonDefaultCondition(p, "from.", field);
|
|
if (have_enclosing_if) format.Indent();
|
|
generator.GenerateMergingCode(p);
|
|
if (have_enclosing_if) {
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
} else if (field->options().weak() ||
|
|
cached_has_word_index != HasWordIndex(field)) {
|
|
// Check hasbit, not using cached bits.
|
|
auto v = p->WithVars(HasBitVars(field));
|
|
format(
|
|
"if ((from.$has_bits$[$has_array_index$] & $has_mask$) != 0) "
|
|
"{\n");
|
|
format.Indent();
|
|
generator.GenerateMergingCode(p);
|
|
format.Outdent();
|
|
format("}\n");
|
|
} else {
|
|
// Check hasbit, using cached bits.
|
|
ABSL_CHECK(HasHasbit(field));
|
|
int has_bit_index = has_bit_indices_[field->index()];
|
|
const std::string mask = absl::StrCat(
|
|
absl::Hex(1u << (has_bit_index % 32), absl::kZeroPad8));
|
|
format("if (cached_has_bits & 0x$1$u) {\n", mask);
|
|
format.Indent();
|
|
|
|
if (have_outer_if && IsPOD(field)) {
|
|
// Defer hasbit modification until the end of chunk.
|
|
// This can reduce the number of loads/stores by up to 7 per 8
|
|
// fields.
|
|
deferred_has_bit_changes = true;
|
|
generator.GenerateCopyConstructorCode(p);
|
|
} else {
|
|
generator.GenerateMergingCode(p);
|
|
}
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
}
|
|
|
|
if (have_outer_if) {
|
|
if (deferred_has_bit_changes) {
|
|
// Flush the has bits for the primitives we deferred.
|
|
ABSL_CHECK_LE(0, cached_has_word_index);
|
|
format("_this->$has_bits$[$1$] |= cached_has_bits;\n",
|
|
cached_has_word_index);
|
|
}
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
// To next chunk.
|
|
++it;
|
|
}
|
|
|
|
if (has_haswords_check) {
|
|
p->Outdent();
|
|
p->Emit(R"cc(
|
|
}
|
|
)cc");
|
|
|
|
// Reset here as it may have been updated in just closed if statement.
|
|
cached_has_word_index = -1;
|
|
}
|
|
}
|
|
|
|
// Merge oneof fields. Oneof field requires oneof case check.
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format("switch (from.$1$_case()) {\n", oneof->name());
|
|
format.Indent();
|
|
for (auto field : FieldRange(oneof)) {
|
|
format("case k$1$: {\n", UnderscoresToCamelCase(field->name(), true));
|
|
format.Indent();
|
|
field_generators_.get(field).GenerateMergingCode(p);
|
|
format("break;\n");
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
format(
|
|
"case $1$_NOT_SET: {\n"
|
|
" break;\n"
|
|
"}\n",
|
|
absl::AsciiStrToUpper(oneof->name()));
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
if (num_weak_fields_) {
|
|
format(
|
|
"_this->$weak_field_map$.MergeFrom(from.$weak_field_map$);"
|
|
"\n");
|
|
}
|
|
|
|
// Merging of extensions and unknown fields is done last, to maximize
|
|
// the opportunity for tail calls.
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
format(
|
|
"_this->$extensions$.MergeFrom(internal_default_instance(), "
|
|
"from.$extensions$);\n");
|
|
}
|
|
|
|
format(
|
|
"_this->_internal_metadata_.MergeFrom<$unknown_fields_type$>(from._"
|
|
"internal_"
|
|
"metadata_);\n");
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
void MessageGenerator::GenerateCopyFrom(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
Formatter format(p);
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
// We don't override the generalized CopyFrom (aka that which
|
|
// takes in the Message base class as a parameter); instead we just
|
|
// let the base Message::CopyFrom take care of it. The base MergeFrom
|
|
// knows how to quickly confirm the types exactly match, and if so, will
|
|
// use GetClassData() to get the address of Message::CopyWithSourceCheck,
|
|
// which calls Clear() and then MergeFrom(), as well as making sure that
|
|
// clearing the destination message doesn't alter the source, when in debug
|
|
// builds. Most callers avoid this by passing a "from" message that is the
|
|
// same type as the message being merged into, rather than a generic
|
|
// Message.
|
|
}
|
|
|
|
// Generate the class-specific CopyFrom.
|
|
format(
|
|
"void $classname$::CopyFrom(const $classname$& from) {\n"
|
|
"// @@protoc_insertion_point(class_specific_copy_from_start:"
|
|
"$full_name$)\n");
|
|
format.Indent();
|
|
|
|
format("if (&from == this) return;\n");
|
|
|
|
if (!options_.opensource_runtime && HasMessageFieldOrExtension(descriptor_)) {
|
|
// This check is disabled in the opensource release because we're
|
|
// concerned that many users do not define NDEBUG in their release builds.
|
|
// It is also disabled if a message has neither message fields nor
|
|
// extensions, as it's impossible to copy from its descendant.
|
|
//
|
|
// Note that IsDescendant is implemented by reflection and not available for
|
|
// lite runtime. In that case, check if the size of the source has changed
|
|
// after Clear.
|
|
if (HasDescriptorMethods(descriptor_->file(), options_)) {
|
|
format(
|
|
"$DCHK$(!::_pbi::IsDescendant(*this, from))\n"
|
|
" << \"Source of CopyFrom cannot be a descendant of the "
|
|
"target.\";\n"
|
|
"Clear();\n");
|
|
} else {
|
|
format(
|
|
"#ifndef NDEBUG\n"
|
|
"::size_t from_size = from.ByteSizeLong();\n"
|
|
"#endif\n"
|
|
"Clear();\n"
|
|
"#ifndef NDEBUG\n"
|
|
"$CHK$_EQ(from_size, from.ByteSizeLong())\n"
|
|
" << \"Source of CopyFrom changed when clearing target. Either \"\n"
|
|
" \"source is a nested message in target (not allowed), or \"\n"
|
|
" \"another thread is modifying the source.\";\n"
|
|
"#endif\n");
|
|
}
|
|
} else {
|
|
format("Clear();\n");
|
|
}
|
|
format("MergeFrom(from);\n");
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
void MessageGenerator::GenerateVerify(io::Printer* p) {
|
|
}
|
|
|
|
void MessageGenerator::GenerateSerializeOneofFields(
|
|
io::Printer* p, const std::vector<const FieldDescriptor*>& fields) {
|
|
ABSL_CHECK(!fields.empty());
|
|
if (fields.size() == 1) {
|
|
GenerateSerializeOneField(p, fields[0], -1);
|
|
return;
|
|
}
|
|
// We have multiple mutually exclusive choices. Emit a switch statement.
|
|
const OneofDescriptor* oneof = fields[0]->containing_oneof();
|
|
p->Emit({{"name", oneof->name()},
|
|
{"cases",
|
|
[&] {
|
|
for (const auto* field : fields) {
|
|
p->Emit({{"Name", UnderscoresToCamelCase(field->name(), true)},
|
|
{"body",
|
|
[&] {
|
|
field_generators_.get(field)
|
|
.GenerateSerializeWithCachedSizesToArray(p);
|
|
}}},
|
|
R"cc(
|
|
case k$Name$: {
|
|
$body$;
|
|
break;
|
|
}
|
|
)cc");
|
|
}
|
|
}}},
|
|
R"cc(
|
|
switch ($name$_case()) {
|
|
$cases$;
|
|
default:
|
|
break;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateSerializeOneField(io::Printer* p,
|
|
const FieldDescriptor* field,
|
|
int cached_has_bits_index) {
|
|
auto v = p->WithVars(FieldVars(field, options_));
|
|
auto emit_body = [&] {
|
|
field_generators_.get(field).GenerateSerializeWithCachedSizesToArray(p);
|
|
};
|
|
|
|
if (field->options().weak()) {
|
|
emit_body();
|
|
p->Emit("\n");
|
|
return;
|
|
}
|
|
|
|
PrintFieldComment(Formatter{p}, field, options_);
|
|
if (HasHasbit(field)) {
|
|
p->Emit(
|
|
{
|
|
{"body", emit_body},
|
|
{"cond",
|
|
[&] {
|
|
int has_bit_index = HasBitIndex(field);
|
|
auto v = p->WithVars(HasBitVars(field));
|
|
// Attempt to use the state of cached_has_bits, if possible.
|
|
if (cached_has_bits_index == has_bit_index / 32) {
|
|
p->Emit("cached_has_bits & $has_mask$");
|
|
} else {
|
|
p->Emit("($has_bits$[$has_array_index$] & $has_mask$) != 0");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
if ($cond$) {
|
|
$body$;
|
|
}
|
|
)cc");
|
|
} else if (field->is_optional()) {
|
|
bool have_enclosing_if = EmitFieldNonDefaultCondition(p, "this->", field);
|
|
if (have_enclosing_if) p->Indent();
|
|
emit_body();
|
|
if (have_enclosing_if) {
|
|
p->Outdent();
|
|
p->Emit(R"cc(
|
|
}
|
|
)cc");
|
|
}
|
|
} else {
|
|
emit_body();
|
|
}
|
|
p->Emit("\n");
|
|
}
|
|
|
|
void MessageGenerator::GenerateSerializeOneExtensionRange(io::Printer* p,
|
|
int start, int end) {
|
|
auto v = p->WithVars(variables_);
|
|
p->Emit({{"start", start}, {"end", end}},
|
|
R"cc(
|
|
// Extension range [$start$, $end$)
|
|
target = $extensions$._InternalSerialize(
|
|
internal_default_instance(), $start$, $end$, target, stream);
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateSerializeWithCachedSizesToArray(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
if (descriptor_->options().message_set_wire_format()) {
|
|
// Special-case MessageSet.
|
|
p->Emit(R"cc(
|
|
$uint8$* $classname$::_InternalSerialize(
|
|
$uint8$* target,
|
|
::$proto_ns$::io::EpsCopyOutputStream* stream) const {
|
|
$annotate_serialize$ target =
|
|
$extensions$.InternalSerializeMessageSetWithCachedSizesToArray(
|
|
internal_default_instance(), target, stream);
|
|
target = ::_pbi::InternalSerializeUnknownMessageSetItemsToArray(
|
|
$unknown_fields$, target, stream);
|
|
return target;
|
|
}
|
|
)cc");
|
|
return;
|
|
}
|
|
|
|
p->Emit(
|
|
{
|
|
{"debug_cond", ShouldSerializeInOrder(descriptor_, options_)
|
|
? "1"
|
|
: "defined(NDEBUG)"},
|
|
{"ndebug", [&] { GenerateSerializeWithCachedSizesBody(p); }},
|
|
{"debug", [&] { GenerateSerializeWithCachedSizesBodyShuffled(p); }},
|
|
{"ifdef",
|
|
[&] {
|
|
if (ShouldSerializeInOrder(descriptor_, options_)) {
|
|
p->Emit("$ndebug$");
|
|
} else {
|
|
p->Emit(R"cc(
|
|
//~ force indenting level
|
|
#ifdef NDEBUG
|
|
$ndebug$;
|
|
#else // NDEBUG
|
|
$debug$;
|
|
#endif // !NDEBUG
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
$uint8$* $classname$::_InternalSerialize(
|
|
$uint8$* target,
|
|
::$proto_ns$::io::EpsCopyOutputStream* stream) const {
|
|
$annotate_serialize$;
|
|
// @@protoc_insertion_point(serialize_to_array_start:$full_name$)
|
|
$ifdef$;
|
|
// @@protoc_insertion_point(serialize_to_array_end:$full_name$)
|
|
return target;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateSerializeWithCachedSizesBody(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
// If there are multiple fields in a row from the same oneof then we
|
|
// coalesce them and emit a switch statement. This is more efficient
|
|
// because it lets the C++ compiler know this is a "at most one can happen"
|
|
// situation. If we emitted "if (has_x()) ...; if (has_y()) ..." the C++
|
|
// compiler's emitted code might check has_y() even when has_x() is true.
|
|
class LazySerializerEmitter {
|
|
public:
|
|
LazySerializerEmitter(MessageGenerator* mg, io::Printer* p)
|
|
: mg_(mg),
|
|
p_(p),
|
|
cached_has_bit_index_(kNoHasbit) {}
|
|
|
|
~LazySerializerEmitter() { Flush(); }
|
|
|
|
// If conditions allow, try to accumulate a run of fields from the same
|
|
// oneof, and handle them at the next Flush().
|
|
void Emit(const FieldDescriptor* field) {
|
|
if (!field->has_presence() || MustFlush(field)) {
|
|
Flush();
|
|
}
|
|
if (field->real_containing_oneof()) {
|
|
v_.push_back(field);
|
|
} else {
|
|
// TODO(ckennelly): Defer non-oneof fields similarly to oneof fields.
|
|
if (HasHasbit(field) && field->has_presence()) {
|
|
// We speculatively load the entire _has_bits_[index] contents, even
|
|
// if it is for only one field. Deferring non-oneof emitting would
|
|
// allow us to determine whether this is going to be useful.
|
|
int has_bit_index = mg_->has_bit_indices_[field->index()];
|
|
if (cached_has_bit_index_ != has_bit_index / 32) {
|
|
// Reload.
|
|
int new_index = has_bit_index / 32;
|
|
p_->Emit({{"index", new_index}},
|
|
R"cc(
|
|
cached_has_bits = _impl_._has_bits_[$index$];
|
|
)cc");
|
|
cached_has_bit_index_ = new_index;
|
|
}
|
|
}
|
|
|
|
mg_->GenerateSerializeOneField(p_, field, cached_has_bit_index_);
|
|
}
|
|
}
|
|
|
|
void EmitIfNotNull(const FieldDescriptor* field) {
|
|
if (field != nullptr) {
|
|
Emit(field);
|
|
}
|
|
}
|
|
|
|
void Flush() {
|
|
if (!v_.empty()) {
|
|
mg_->GenerateSerializeOneofFields(p_, v_);
|
|
v_.clear();
|
|
}
|
|
}
|
|
|
|
private:
|
|
// If we have multiple fields in v_ then they all must be from the same
|
|
// oneof. Would adding field to v_ break that invariant?
|
|
bool MustFlush(const FieldDescriptor* field) {
|
|
return !v_.empty() &&
|
|
v_[0]->containing_oneof() != field->containing_oneof();
|
|
}
|
|
|
|
MessageGenerator* mg_;
|
|
io::Printer* p_;
|
|
std::vector<const FieldDescriptor*> v_;
|
|
|
|
// cached_has_bit_index_ maintains that:
|
|
// cached_has_bits = from._has_bits_[cached_has_bit_index_]
|
|
// for cached_has_bit_index_ >= 0
|
|
int cached_has_bit_index_;
|
|
};
|
|
|
|
class LazyExtensionRangeEmitter {
|
|
public:
|
|
LazyExtensionRangeEmitter(MessageGenerator* mg, io::Printer* p)
|
|
: mg_(mg), p_(p) {}
|
|
|
|
void AddToRange(const Descriptor::ExtensionRange* range) {
|
|
if (!has_current_range_) {
|
|
min_start_ = range->start_number();
|
|
max_end_ = range->end_number();
|
|
has_current_range_ = true;
|
|
} else {
|
|
min_start_ = std::min(min_start_, range->start_number());
|
|
max_end_ = std::max(max_end_, range->end_number());
|
|
}
|
|
}
|
|
|
|
void Flush() {
|
|
if (has_current_range_) {
|
|
mg_->GenerateSerializeOneExtensionRange(p_, min_start_, max_end_);
|
|
}
|
|
has_current_range_ = false;
|
|
}
|
|
|
|
private:
|
|
MessageGenerator* mg_;
|
|
io::Printer* p_;
|
|
bool has_current_range_ = false;
|
|
int min_start_ = 0;
|
|
int max_end_ = 0;
|
|
};
|
|
|
|
// We need to track the largest weak field, because weak fields are serialized
|
|
// differently than normal fields. The WeakFieldMap::FieldWriter will
|
|
// serialize all weak fields that are ordinally between the last serialized
|
|
// weak field and the current field. In order to guarantee that all weak
|
|
// fields are serialized, we need to make sure to emit the code to serialize
|
|
// the largest weak field present at some point.
|
|
class LargestWeakFieldHolder {
|
|
public:
|
|
const FieldDescriptor* Release() {
|
|
const FieldDescriptor* result = field_;
|
|
field_ = nullptr;
|
|
return result;
|
|
}
|
|
void ReplaceIfLarger(const FieldDescriptor* field) {
|
|
if (field_ == nullptr || field_->number() < field->number()) {
|
|
field_ = field;
|
|
}
|
|
}
|
|
|
|
private:
|
|
const FieldDescriptor* field_ = nullptr;
|
|
};
|
|
|
|
std::vector<const FieldDescriptor*> ordered_fields =
|
|
SortFieldsByNumber(descriptor_);
|
|
|
|
std::vector<const Descriptor::ExtensionRange*> sorted_extensions;
|
|
sorted_extensions.reserve(descriptor_->extension_range_count());
|
|
for (int i = 0; i < descriptor_->extension_range_count(); ++i) {
|
|
sorted_extensions.push_back(descriptor_->extension_range(i));
|
|
}
|
|
std::sort(sorted_extensions.begin(), sorted_extensions.end(),
|
|
ExtensionRangeSorter());
|
|
p->Emit(
|
|
{
|
|
{"handle_weak_fields",
|
|
[&] {
|
|
if (num_weak_fields_ == 0) return;
|
|
p->Emit(R"cc(
|
|
::_pbi::WeakFieldMap::FieldWriter field_writer($weak_field_map$);
|
|
)cc");
|
|
}},
|
|
{"handle_lazy_fields",
|
|
[&] {
|
|
// Merge fields and extension ranges, sorted by field number.
|
|
LazySerializerEmitter e(this, p);
|
|
LazyExtensionRangeEmitter re(this, p);
|
|
LargestWeakFieldHolder largest_weak_field;
|
|
int i, j;
|
|
for (i = 0, j = 0;
|
|
i < ordered_fields.size() || j < sorted_extensions.size();) {
|
|
if ((j == sorted_extensions.size()) ||
|
|
(i < descriptor_->field_count() &&
|
|
ordered_fields[i]->number() <
|
|
sorted_extensions[j]->start_number())) {
|
|
const FieldDescriptor* field = ordered_fields[i++];
|
|
re.Flush();
|
|
if (field->options().weak()) {
|
|
largest_weak_field.ReplaceIfLarger(field);
|
|
PrintFieldComment(Formatter{p}, field, options_);
|
|
} else {
|
|
e.EmitIfNotNull(largest_weak_field.Release());
|
|
e.Emit(field);
|
|
}
|
|
} else {
|
|
e.EmitIfNotNull(largest_weak_field.Release());
|
|
e.Flush();
|
|
re.AddToRange(sorted_extensions[j++]);
|
|
}
|
|
}
|
|
re.Flush();
|
|
e.EmitIfNotNull(largest_weak_field.Release());
|
|
}},
|
|
{"handle_unknown_fields",
|
|
[&] {
|
|
if (UseUnknownFieldSet(descriptor_->file(), options_)) {
|
|
p->Emit(R"cc(
|
|
target =
|
|
::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
|
|
$unknown_fields$, target, stream);
|
|
)cc");
|
|
} else {
|
|
p->Emit(R"cc(
|
|
target = stream->WriteRaw(
|
|
$unknown_fields$.data(),
|
|
static_cast<int>($unknown_fields$.size()), target);
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
$handle_weak_fields$;
|
|
$uint32$ cached_has_bits = 0;
|
|
(void)cached_has_bits;
|
|
|
|
$handle_lazy_fields$;
|
|
if (PROTOBUF_PREDICT_FALSE($have_unknown_fields$)) {
|
|
$handle_unknown_fields$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
void MessageGenerator::GenerateSerializeWithCachedSizesBodyShuffled(
|
|
io::Printer* p) {
|
|
|
|
std::vector<const FieldDescriptor*> ordered_fields =
|
|
SortFieldsByNumber(descriptor_);
|
|
|
|
std::vector<const Descriptor::ExtensionRange*> sorted_extensions;
|
|
sorted_extensions.reserve(descriptor_->extension_range_count());
|
|
for (int i = 0; i < descriptor_->extension_range_count(); ++i) {
|
|
sorted_extensions.push_back(descriptor_->extension_range(i));
|
|
}
|
|
std::sort(sorted_extensions.begin(), sorted_extensions.end(),
|
|
ExtensionRangeSorter());
|
|
|
|
int num_fields = ordered_fields.size() + sorted_extensions.size();
|
|
constexpr int kLargePrime = 1000003;
|
|
ABSL_CHECK_LT(num_fields, kLargePrime)
|
|
<< "Prime offset must be greater than the number of fields to ensure "
|
|
"those are coprime.";
|
|
p->Emit(
|
|
{
|
|
{"last_field", num_fields - 1},
|
|
{"field_writer",
|
|
[&] {
|
|
if (num_weak_fields_ == 0) return;
|
|
p->Emit(R"cc(
|
|
::_pbi::WeakFieldMap::FieldWriter field_writer($weak_field_map$);
|
|
)cc");
|
|
}},
|
|
{"ordered_cases",
|
|
[&] {
|
|
size_t index = 0;
|
|
for (const auto* f : ordered_fields) {
|
|
p->Emit({{"index", index++},
|
|
{"body", [&] { GenerateSerializeOneField(p, f, -1); }}},
|
|
R"cc(
|
|
case $index$: {
|
|
$body$;
|
|
break;
|
|
}
|
|
)cc");
|
|
}
|
|
}},
|
|
{"extension_cases",
|
|
[&] {
|
|
size_t index = ordered_fields.size();
|
|
for (const auto* r : sorted_extensions) {
|
|
p->Emit({{"index", index++},
|
|
{"body",
|
|
[&] {
|
|
GenerateSerializeOneExtensionRange(
|
|
p, r->start_number(), r->end_number());
|
|
}}},
|
|
R"cc(
|
|
case $index$: {
|
|
$body$;
|
|
break;
|
|
}
|
|
)cc");
|
|
}
|
|
}},
|
|
{"handle_unknown_fields",
|
|
[&] {
|
|
if (UseUnknownFieldSet(descriptor_->file(), options_)) {
|
|
p->Emit(R"cc(
|
|
target =
|
|
::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
|
|
$unknown_fields$, target, stream);
|
|
)cc");
|
|
} else {
|
|
p->Emit(R"cc(
|
|
target = stream->WriteRaw(
|
|
$unknown_fields$.data(),
|
|
static_cast<int>($unknown_fields$.size()), target);
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
$field_writer$;
|
|
for (int i = $last_field$; i >= 0; i--) {
|
|
switch (i) {
|
|
$ordered_cases$;
|
|
$extension_cases$;
|
|
default: {
|
|
$DCHK$(false) << "Unexpected index: " << i;
|
|
}
|
|
}
|
|
}
|
|
if (PROTOBUF_PREDICT_FALSE($have_unknown_fields$)) {
|
|
$handle_unknown_fields$;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
std::vector<uint32_t> MessageGenerator::RequiredFieldsBitMask() const {
|
|
const int array_size = HasBitsSize();
|
|
std::vector<uint32_t> masks(array_size, 0);
|
|
|
|
for (auto field : FieldRange(descriptor_)) {
|
|
if (!field->is_required()) {
|
|
continue;
|
|
}
|
|
|
|
const int has_bit_index = has_bit_indices_[field->index()];
|
|
masks[has_bit_index / 32] |= static_cast<uint32_t>(1)
|
|
<< (has_bit_index % 32);
|
|
}
|
|
return masks;
|
|
}
|
|
|
|
void MessageGenerator::GenerateByteSize(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
|
|
if (descriptor_->options().message_set_wire_format()) {
|
|
// Special-case MessageSet.
|
|
p->Emit(
|
|
R"cc(
|
|
PROTOBUF_NOINLINE ::size_t $classname$::ByteSizeLong() const {
|
|
$annotate_bytesize$;
|
|
// @@protoc_insertion_point(message_set_byte_size_start:$full_name$)
|
|
::size_t total_size = $extensions$.MessageSetByteSize();
|
|
if ($have_unknown_fields$) {
|
|
total_size += ::_pbi::ComputeUnknownMessageSetItemsSize($unknown_fields$);
|
|
}
|
|
int cached_size = ::_pbi::ToCachedSize(total_size);
|
|
SetCachedSize(cached_size);
|
|
return total_size;
|
|
}
|
|
)cc");
|
|
return;
|
|
}
|
|
|
|
Formatter format(p);
|
|
format(
|
|
"::size_t $classname$::ByteSizeLong() const {\n"
|
|
"$annotate_bytesize$"
|
|
"// @@protoc_insertion_point(message_byte_size_start:$full_name$)\n");
|
|
format.Indent();
|
|
format(
|
|
"::size_t total_size = 0;\n"
|
|
"\n");
|
|
|
|
if (descriptor_->extension_range_count() > 0) {
|
|
format(
|
|
"total_size += $extensions$.ByteSize();\n"
|
|
"\n");
|
|
}
|
|
|
|
std::vector<FieldChunk> chunks = CollectFields(
|
|
optimized_order_, options_,
|
|
[&](const FieldDescriptor* a, const FieldDescriptor* b) -> bool {
|
|
return a->label() == b->label() && HasByteIndex(a) == HasByteIndex(b) &&
|
|
ShouldSplit(a, options_) == ShouldSplit(b, options_);
|
|
});
|
|
|
|
auto it = chunks.begin();
|
|
auto end = chunks.end();
|
|
int cached_has_word_index = -1;
|
|
|
|
format(
|
|
"$uint32$ cached_has_bits = 0;\n"
|
|
"// Prevent compiler warnings about cached_has_bits being unused\n"
|
|
"(void) cached_has_bits;\n\n");
|
|
|
|
while (it != end) {
|
|
auto next = FindNextUnequalChunk(it, end, MayGroupChunksForHaswordsCheck);
|
|
bool has_haswords_check = MaybeEmitHaswordsCheck(
|
|
it, next, options_, has_bit_indices_, cached_has_word_index, "", p);
|
|
|
|
while (it != next) {
|
|
const std::vector<const FieldDescriptor*>& fields = it->fields;
|
|
const bool have_outer_if =
|
|
fields.size() > 1 && HasWordIndex(fields[0]) != kNoHasbit;
|
|
|
|
if (have_outer_if) {
|
|
// Emit an if() that will let us skip the whole chunk if none are set.
|
|
uint32_t chunk_mask = GenChunkMask(fields, has_bit_indices_);
|
|
std::string chunk_mask_str =
|
|
absl::StrCat(absl::Hex(chunk_mask, absl::kZeroPad8));
|
|
|
|
// Check (up to) 8 has_bits at a time if we have more than one field in
|
|
// this chunk. Due to field layout ordering, we may check
|
|
// _has_bits_[last_chunk * 8 / 32] multiple times.
|
|
ABSL_DCHECK_LE(2, popcnt(chunk_mask));
|
|
ABSL_DCHECK_GE(8, popcnt(chunk_mask));
|
|
|
|
if (cached_has_word_index != HasWordIndex(fields.front())) {
|
|
cached_has_word_index = HasWordIndex(fields.front());
|
|
format("cached_has_bits = $has_bits$[$1$];\n", cached_has_word_index);
|
|
}
|
|
format("if (cached_has_bits & 0x$1$u) {\n", chunk_mask_str);
|
|
format.Indent();
|
|
}
|
|
|
|
// Go back and emit checks for each of the fields we processed.
|
|
for (const auto* field : fields) {
|
|
bool have_enclosing_if = false;
|
|
|
|
PrintFieldComment(format, field, options_);
|
|
|
|
if (field->is_repeated()) {
|
|
// No presence check is required.
|
|
} else if (HasHasbit(field)) {
|
|
PrintPresenceCheck(field, has_bit_indices_, p,
|
|
&cached_has_word_index);
|
|
have_enclosing_if = true;
|
|
} else {
|
|
// Without field presence: field is serialized only if it has a
|
|
// non-default value.
|
|
have_enclosing_if = EmitFieldNonDefaultCondition(p, "this->", field);
|
|
}
|
|
|
|
if (have_enclosing_if) format.Indent();
|
|
|
|
field_generators_.get(field).GenerateByteSize(p);
|
|
|
|
if (have_enclosing_if) {
|
|
format.Outdent();
|
|
format(
|
|
"}\n"
|
|
"\n");
|
|
}
|
|
}
|
|
|
|
if (have_outer_if) {
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
// To next chunk.
|
|
++it;
|
|
}
|
|
|
|
if (has_haswords_check) {
|
|
p->Outdent();
|
|
p->Emit(R"cc(
|
|
}
|
|
)cc");
|
|
|
|
// Reset here as it may have been updated in just closed if statement.
|
|
cached_has_word_index = -1;
|
|
}
|
|
}
|
|
|
|
// Fields inside a oneof don't use _has_bits_ so we count them in a separate
|
|
// pass.
|
|
for (auto oneof : OneOfRange(descriptor_)) {
|
|
format("switch ($1$_case()) {\n", oneof->name());
|
|
format.Indent();
|
|
for (auto field : FieldRange(oneof)) {
|
|
PrintFieldComment(format, field, options_);
|
|
format("case k$1$: {\n", UnderscoresToCamelCase(field->name(), true));
|
|
format.Indent();
|
|
field_generators_.get(field).GenerateByteSize(p);
|
|
format("break;\n");
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
format(
|
|
"case $1$_NOT_SET: {\n"
|
|
" break;\n"
|
|
"}\n",
|
|
absl::AsciiStrToUpper(oneof->name()));
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
if (num_weak_fields_) {
|
|
// TagSize + MessageSize
|
|
format("total_size += $weak_field_map$.ByteSizeLong();\n");
|
|
}
|
|
|
|
if (UseUnknownFieldSet(descriptor_->file(), options_)) {
|
|
// We go out of our way to put the computation of the uncommon path of
|
|
// unknown fields in tail position. This allows for better code generation
|
|
// of this function for simple protos.
|
|
format(
|
|
"return MaybeComputeUnknownFieldsSize(total_size, &$cached_size$);\n");
|
|
} else {
|
|
format("if (PROTOBUF_PREDICT_FALSE($have_unknown_fields$)) {\n");
|
|
format(" total_size += $unknown_fields$.size();\n");
|
|
format("}\n");
|
|
|
|
// We update _cached_size_ even though this is a const method. Because
|
|
// const methods might be called concurrently this needs to be atomic
|
|
// operations or the program is undefined. In practice, since any
|
|
// concurrent writes will be writing the exact same value, normal writes
|
|
// will work on all common processors. We use a dedicated wrapper class to
|
|
// abstract away the underlying atomic. This makes it easier on platforms
|
|
// where even relaxed memory order might have perf impact to replace it with
|
|
// ordinary loads and stores.
|
|
format(
|
|
"int cached_size = ::_pbi::ToCachedSize(total_size);\n"
|
|
"SetCachedSize(cached_size);\n"
|
|
"return total_size;\n");
|
|
}
|
|
|
|
format.Outdent();
|
|
format("}\n");
|
|
}
|
|
|
|
void MessageGenerator::GenerateIsInitialized(io::Printer* p) {
|
|
if (HasSimpleBaseClass(descriptor_, options_)) return;
|
|
|
|
auto has_required_field = [&](const auto* oneof) {
|
|
for (const auto* field : FieldRange(oneof)) {
|
|
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE &&
|
|
!ShouldIgnoreRequiredFieldCheck(field, options_) &&
|
|
scc_analyzer_->HasRequiredFields(field->message_type())) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
};
|
|
|
|
p->Emit(
|
|
{
|
|
{"test_extensions",
|
|
[&] {
|
|
if (descriptor_->extension_range_count() == 0) return;
|
|
p->Emit(R"cc(
|
|
if (!$extensions$.IsInitialized(internal_default_instance())) {
|
|
return false;
|
|
}
|
|
)cc");
|
|
}},
|
|
{"test_required_fields",
|
|
[&] {
|
|
if (num_required_fields_ == 0) return;
|
|
p->Emit(R"cc(
|
|
if (_Internal::MissingRequiredFields($has_bits$)) {
|
|
return false;
|
|
}
|
|
)cc");
|
|
}},
|
|
{"test_ordinary_fields",
|
|
[&] {
|
|
for (const auto* field : optimized_order_) {
|
|
field_generators_.get(field).GenerateIsInitialized(p);
|
|
}
|
|
}},
|
|
{"test_weak_fields",
|
|
[&] {
|
|
if (num_weak_fields_ == 0) return;
|
|
p->Emit(R"cc(
|
|
if (!$weak_field_map$.IsInitialized()) return false;
|
|
)cc");
|
|
}},
|
|
{"test_oneof_fields",
|
|
[&] {
|
|
for (const auto* oneof : OneOfRange(descriptor_)) {
|
|
if (!has_required_field(oneof)) continue;
|
|
p->Emit({{"name", oneof->name()},
|
|
{"NAME", absl::AsciiStrToUpper(oneof->name())},
|
|
{"cases",
|
|
[&] {
|
|
for (const auto* field : FieldRange(oneof)) {
|
|
p->Emit({{"Name", UnderscoresToCamelCase(
|
|
field->name(), true)},
|
|
{"body",
|
|
[&] {
|
|
field_generators_.get(field)
|
|
.GenerateIsInitialized(p);
|
|
}}},
|
|
R"cc(
|
|
case k$Name$: {
|
|
$body$;
|
|
break;
|
|
}
|
|
)cc");
|
|
}
|
|
}}},
|
|
R"cc(
|
|
switch ($name$_case()) {
|
|
$cases$;
|
|
case $NAME$_NOT_SET: {
|
|
break;
|
|
}
|
|
}
|
|
)cc");
|
|
}
|
|
}},
|
|
},
|
|
R"cc(
|
|
PROTOBUF_NOINLINE bool $classname$::IsInitialized() const {
|
|
$test_extensions$;
|
|
$test_required_fields$;
|
|
$test_ordinary_fields$;
|
|
$test_weak_fields$;
|
|
$test_oneof_fields$;
|
|
return true;
|
|
}
|
|
)cc");
|
|
}
|
|
|
|
} // namespace cpp
|
|
} // namespace compiler
|
|
} // namespace protobuf
|
|
} // namespace google
|
|
|
|
#include "google/protobuf/port_undef.inc"
|