diff options
Diffstat (limited to 'src/google/protobuf/compiler/java/java_helpers.cc')
| -rw-r--r-- | src/google/protobuf/compiler/java/java_helpers.cc | 776 |
1 files changed, 0 insertions, 776 deletions
diff --git a/src/google/protobuf/compiler/java/java_helpers.cc b/src/google/protobuf/compiler/java/java_helpers.cc deleted file mode 100644 index c31df265..00000000 --- a/src/google/protobuf/compiler/java/java_helpers.cc +++ /dev/null @@ -1,776 +0,0 @@ -// Protocol Buffers - Google's data interchange format -// Copyright 2008 Google Inc. All rights reserved. -// https://developers.google.com/protocol-buffers/ -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -// Author: kenton@google.com (Kenton Varda) -// Based on original Protocol Buffers design by -// Sanjay Ghemawat, Jeff Dean, and others. - -#include <algorithm> -#include <google/protobuf/stubs/hash.h> -#include <limits> -#include <vector> - -#include <google/protobuf/compiler/java/java_helpers.h> -#include <google/protobuf/compiler/java/java_name_resolver.h> -#include <google/protobuf/descriptor.pb.h> -#include <google/protobuf/wire_format.h> -#include <google/protobuf/stubs/strutil.h> -#include <google/protobuf/stubs/substitute.h> - -namespace google { -namespace protobuf { -namespace compiler { -namespace java { - -using internal::WireFormat; -using internal::WireFormatLite; - -const char kThickSeparator[] = - "// ===================================================================\n"; -const char kThinSeparator[] = - "// -------------------------------------------------------------------\n"; - -namespace { - -const char* kDefaultPackage = ""; - -// Names that should be avoided as field names. -// Using them will cause the compiler to generate accessors whose names are -// colliding with methods defined in base classes. -const char* kForbiddenWordList[] = { - // message base class: - "cached_size", "serialized_size", - // java.lang.Object: - "class", -}; - -bool IsForbidden(const string& field_name) { - for (int i = 0; i < GOOGLE_ARRAYSIZE(kForbiddenWordList); ++i) { - if (field_name == kForbiddenWordList[i]) { - return true; - } - } - return false; -} - -string FieldName(const FieldDescriptor* field) { - string field_name; - // Groups are hacky: The name of the field is just the lower-cased name - // of the group type. In Java, though, we would like to retain the original - // capitalization of the type name. - if (GetType(field) == FieldDescriptor::TYPE_GROUP) { - field_name = field->message_type()->name(); - } else { - field_name = field->name(); - } - if (IsForbidden(field_name)) { - // Append a trailing "#" to indicate that the name should be decorated to - // avoid collision with other names. - field_name += "#"; - } - return field_name; -} - - -} // namespace - -void PrintGeneratedAnnotation(io::Printer* printer, char delimiter, - const string& annotation_file) { - if (annotation_file.empty()) { - return; - } - string ptemplate = - "@javax.annotation.Generated(value=\"protoc\", comments=\"annotations:"; - ptemplate.push_back(delimiter); - ptemplate.append("annotation_file"); - ptemplate.push_back(delimiter); - ptemplate.append("\")\n"); - printer->Print(ptemplate.c_str(), "annotation_file", annotation_file); -} - -string UnderscoresToCamelCase(const string& input, bool cap_next_letter) { - string result; - // Note: I distrust ctype.h due to locales. - for (int i = 0; i < input.size(); i++) { - if ('a' <= input[i] && input[i] <= 'z') { - if (cap_next_letter) { - result += input[i] + ('A' - 'a'); - } else { - result += input[i]; - } - cap_next_letter = false; - } else if ('A' <= input[i] && input[i] <= 'Z') { - if (i == 0 && !cap_next_letter) { - // Force first letter to lower-case unless explicitly told to - // capitalize it. - result += input[i] + ('a' - 'A'); - } else { - // Capital letters after the first are left as-is. - result += input[i]; - } - cap_next_letter = false; - } else if ('0' <= input[i] && input[i] <= '9') { - result += input[i]; - cap_next_letter = true; - } else { - cap_next_letter = true; - } - } - // Add a trailing "_" if the name should be altered. - if (input[input.size() - 1] == '#') { - result += '_'; - } - return result; -} - -string UnderscoresToCamelCase(const FieldDescriptor* field) { - return UnderscoresToCamelCase(FieldName(field), false); -} - -string UnderscoresToCapitalizedCamelCase(const FieldDescriptor* field) { - return UnderscoresToCamelCase(FieldName(field), true); -} - -string UnderscoresToCamelCase(const MethodDescriptor* method) { - return UnderscoresToCamelCase(method->name(), false); -} - -string UniqueFileScopeIdentifier(const Descriptor* descriptor) { - return "static_" + StringReplace(descriptor->full_name(), ".", "_", true); -} - -string StripProto(const string& filename) { - if (HasSuffixString(filename, ".protodevel")) { - return StripSuffixString(filename, ".protodevel"); - } else { - return StripSuffixString(filename, ".proto"); - } -} - -string FileClassName(const FileDescriptor* file, bool immutable) { - ClassNameResolver name_resolver; - return name_resolver.GetFileClassName(file, immutable); -} - -string FileJavaPackage(const FileDescriptor* file, bool immutable) { - string result; - - if (file->options().has_java_package()) { - result = file->options().java_package(); - } else { - result = kDefaultPackage; - if (!file->package().empty()) { - if (!result.empty()) result += '.'; - result += file->package(); - } - } - - return result; -} - -string JavaPackageToDir(string package_name) { - string package_dir = - StringReplace(package_name, ".", "/", true); - if (!package_dir.empty()) package_dir += "/"; - return package_dir; -} - -// TODO(xiaofeng): This function is only kept for it's publicly referenced. -// It should be removed after mutable API up-integration. -string ToJavaName(const string& full_name, - const FileDescriptor* file) { - string result; - if (file->options().java_multiple_files()) { - result = FileJavaPackage(file); - } else { - result = ClassName(file); - } - if (!result.empty()) { - result += '.'; - } - if (file->package().empty()) { - result += full_name; - } else { - // Strip the proto package from full_name since we've replaced it with - // the Java package. - result += full_name.substr(file->package().size() + 1); - } - return result; -} - -string ClassName(const Descriptor* descriptor) { - ClassNameResolver name_resolver; - return name_resolver.GetClassName(descriptor, true); -} - -string ClassName(const EnumDescriptor* descriptor) { - ClassNameResolver name_resolver; - return name_resolver.GetClassName(descriptor, true); -} - -string ClassName(const ServiceDescriptor* descriptor) { - ClassNameResolver name_resolver; - return name_resolver.GetClassName(descriptor, true); -} - -string ClassName(const FileDescriptor* descriptor) { - ClassNameResolver name_resolver; - return name_resolver.GetClassName(descriptor, true); -} - -string ExtraMessageInterfaces(const Descriptor* descriptor) { - string interfaces = "// @@protoc_insertion_point(message_implements:" - + descriptor->full_name() + ")"; - return interfaces; -} - - -string ExtraBuilderInterfaces(const Descriptor* descriptor) { - string interfaces = "// @@protoc_insertion_point(builder_implements:" - + descriptor->full_name() + ")"; - return interfaces; -} - -string ExtraMessageOrBuilderInterfaces(const Descriptor* descriptor) { - string interfaces = "// @@protoc_insertion_point(interface_extends:" - + descriptor->full_name() + ")"; - return interfaces; -} - -string FieldConstantName(const FieldDescriptor *field) { - string name = field->name() + "_FIELD_NUMBER"; - UpperString(&name); - return name; -} - -FieldDescriptor::Type GetType(const FieldDescriptor* field) { - return field->type(); -} - -JavaType GetJavaType(const FieldDescriptor* field) { - switch (GetType(field)) { - case FieldDescriptor::TYPE_INT32: - case FieldDescriptor::TYPE_UINT32: - case FieldDescriptor::TYPE_SINT32: - case FieldDescriptor::TYPE_FIXED32: - case FieldDescriptor::TYPE_SFIXED32: - return JAVATYPE_INT; - - case FieldDescriptor::TYPE_INT64: - case FieldDescriptor::TYPE_UINT64: - case FieldDescriptor::TYPE_SINT64: - case FieldDescriptor::TYPE_FIXED64: - case FieldDescriptor::TYPE_SFIXED64: - return JAVATYPE_LONG; - - case FieldDescriptor::TYPE_FLOAT: - return JAVATYPE_FLOAT; - - case FieldDescriptor::TYPE_DOUBLE: - return JAVATYPE_DOUBLE; - - case FieldDescriptor::TYPE_BOOL: - return JAVATYPE_BOOLEAN; - - case FieldDescriptor::TYPE_STRING: - return JAVATYPE_STRING; - - case FieldDescriptor::TYPE_BYTES: - return JAVATYPE_BYTES; - - case FieldDescriptor::TYPE_ENUM: - return JAVATYPE_ENUM; - - case FieldDescriptor::TYPE_GROUP: - case FieldDescriptor::TYPE_MESSAGE: - return JAVATYPE_MESSAGE; - - // No default because we want the compiler to complain if any new - // types are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return JAVATYPE_INT; -} - -const char* PrimitiveTypeName(JavaType type) { - switch (type) { - case JAVATYPE_INT : return "int"; - case JAVATYPE_LONG : return "long"; - case JAVATYPE_FLOAT : return "float"; - case JAVATYPE_DOUBLE : return "double"; - case JAVATYPE_BOOLEAN: return "boolean"; - case JAVATYPE_STRING : return "java.lang.String"; - case JAVATYPE_BYTES : return "com.google.protobuf.ByteString"; - case JAVATYPE_ENUM : return NULL; - case JAVATYPE_MESSAGE: return NULL; - - // No default because we want the compiler to complain if any new - // JavaTypes are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return NULL; -} - -const char* BoxedPrimitiveTypeName(JavaType type) { - switch (type) { - case JAVATYPE_INT : return "java.lang.Integer"; - case JAVATYPE_LONG : return "java.lang.Long"; - case JAVATYPE_FLOAT : return "java.lang.Float"; - case JAVATYPE_DOUBLE : return "java.lang.Double"; - case JAVATYPE_BOOLEAN: return "java.lang.Boolean"; - case JAVATYPE_STRING : return "java.lang.String"; - case JAVATYPE_BYTES : return "com.google.protobuf.ByteString"; - case JAVATYPE_ENUM : return NULL; - case JAVATYPE_MESSAGE: return NULL; - - // No default because we want the compiler to complain if any new - // JavaTypes are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return NULL; -} - -const char* FieldTypeName(FieldDescriptor::Type field_type) { - switch (field_type) { - case FieldDescriptor::TYPE_INT32 : return "INT32"; - case FieldDescriptor::TYPE_UINT32 : return "UINT32"; - case FieldDescriptor::TYPE_SINT32 : return "SINT32"; - case FieldDescriptor::TYPE_FIXED32 : return "FIXED32"; - case FieldDescriptor::TYPE_SFIXED32: return "SFIXED32"; - case FieldDescriptor::TYPE_INT64 : return "INT64"; - case FieldDescriptor::TYPE_UINT64 : return "UINT64"; - case FieldDescriptor::TYPE_SINT64 : return "SINT64"; - case FieldDescriptor::TYPE_FIXED64 : return "FIXED64"; - case FieldDescriptor::TYPE_SFIXED64: return "SFIXED64"; - case FieldDescriptor::TYPE_FLOAT : return "FLOAT"; - case FieldDescriptor::TYPE_DOUBLE : return "DOUBLE"; - case FieldDescriptor::TYPE_BOOL : return "BOOL"; - case FieldDescriptor::TYPE_STRING : return "STRING"; - case FieldDescriptor::TYPE_BYTES : return "BYTES"; - case FieldDescriptor::TYPE_ENUM : return "ENUM"; - case FieldDescriptor::TYPE_GROUP : return "GROUP"; - case FieldDescriptor::TYPE_MESSAGE : return "MESSAGE"; - - // No default because we want the compiler to complain if any new - // types are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return NULL; -} - -bool AllAscii(const string& text) { - for (int i = 0; i < text.size(); i++) { - if ((text[i] & 0x80) != 0) { - return false; - } - } - return true; -} - -string DefaultValue(const FieldDescriptor* field, bool immutable, - ClassNameResolver* name_resolver) { - // Switch on CppType since we need to know which default_value_* method - // of FieldDescriptor to call. - switch (field->cpp_type()) { - case FieldDescriptor::CPPTYPE_INT32: - return SimpleItoa(field->default_value_int32()); - case FieldDescriptor::CPPTYPE_UINT32: - // Need to print as a signed int since Java has no unsigned. - return SimpleItoa(static_cast<int32>(field->default_value_uint32())); - case FieldDescriptor::CPPTYPE_INT64: - return SimpleItoa(field->default_value_int64()) + "L"; - case FieldDescriptor::CPPTYPE_UINT64: - return SimpleItoa(static_cast<int64>(field->default_value_uint64())) + - "L"; - case FieldDescriptor::CPPTYPE_DOUBLE: { - double value = field->default_value_double(); - if (value == numeric_limits<double>::infinity()) { - return "Double.POSITIVE_INFINITY"; - } else if (value == -numeric_limits<double>::infinity()) { - return "Double.NEGATIVE_INFINITY"; - } else if (value != value) { - return "Double.NaN"; - } else { - return SimpleDtoa(value) + "D"; - } - } - case FieldDescriptor::CPPTYPE_FLOAT: { - float value = field->default_value_float(); - if (value == numeric_limits<float>::infinity()) { - return "Float.POSITIVE_INFINITY"; - } else if (value == -numeric_limits<float>::infinity()) { - return "Float.NEGATIVE_INFINITY"; - } else if (value != value) { - return "Float.NaN"; - } else { - return SimpleFtoa(value) + "F"; - } - } - case FieldDescriptor::CPPTYPE_BOOL: - return field->default_value_bool() ? "true" : "false"; - case FieldDescriptor::CPPTYPE_STRING: - if (GetType(field) == FieldDescriptor::TYPE_BYTES) { - if (field->has_default_value()) { - // See comments in Internal.java for gory details. - return strings::Substitute( - "com.google.protobuf.Internal.bytesDefaultValue(\"$0\")", - CEscape(field->default_value_string())); - } else { - return "com.google.protobuf.ByteString.EMPTY"; - } - } else { - if (AllAscii(field->default_value_string())) { - // All chars are ASCII. In this case CEscape() works fine. - return "\"" + CEscape(field->default_value_string()) + "\""; - } else { - // See comments in Internal.java for gory details. - return strings::Substitute( - "com.google.protobuf.Internal.stringDefaultValue(\"$0\")", - CEscape(field->default_value_string())); - } - } - - case FieldDescriptor::CPPTYPE_ENUM: - return name_resolver->GetClassName(field->enum_type(), immutable) + "." + - field->default_value_enum()->name(); - - case FieldDescriptor::CPPTYPE_MESSAGE: - return name_resolver->GetClassName(field->message_type(), immutable) + - ".getDefaultInstance()"; - - // No default because we want the compiler to complain if any new - // types are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return ""; -} - -bool IsDefaultValueJavaDefault(const FieldDescriptor* field) { - // Switch on CppType since we need to know which default_value_* method - // of FieldDescriptor to call. - switch (field->cpp_type()) { - case FieldDescriptor::CPPTYPE_INT32: - return field->default_value_int32() == 0; - case FieldDescriptor::CPPTYPE_UINT32: - return field->default_value_uint32() == 0; - case FieldDescriptor::CPPTYPE_INT64: - return field->default_value_int64() == 0L; - case FieldDescriptor::CPPTYPE_UINT64: - return field->default_value_uint64() == 0L; - case FieldDescriptor::CPPTYPE_DOUBLE: - return field->default_value_double() == 0.0; - case FieldDescriptor::CPPTYPE_FLOAT: - return field->default_value_float() == 0.0; - case FieldDescriptor::CPPTYPE_BOOL: - return field->default_value_bool() == false; - case FieldDescriptor::CPPTYPE_ENUM: - return field->default_value_enum()->number() == 0; - case FieldDescriptor::CPPTYPE_STRING: - case FieldDescriptor::CPPTYPE_MESSAGE: - return false; - - // No default because we want the compiler to complain if any new - // types are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return false; -} - -bool IsByteStringWithCustomDefaultValue(const FieldDescriptor* field) { - return GetJavaType(field) == JAVATYPE_BYTES && - field->default_value_string() != ""; -} - -const char* bit_masks[] = { - "0x00000001", - "0x00000002", - "0x00000004", - "0x00000008", - "0x00000010", - "0x00000020", - "0x00000040", - "0x00000080", - - "0x00000100", - "0x00000200", - "0x00000400", - "0x00000800", - "0x00001000", - "0x00002000", - "0x00004000", - "0x00008000", - - "0x00010000", - "0x00020000", - "0x00040000", - "0x00080000", - "0x00100000", - "0x00200000", - "0x00400000", - "0x00800000", - - "0x01000000", - "0x02000000", - "0x04000000", - "0x08000000", - "0x10000000", - "0x20000000", - "0x40000000", - "0x80000000", -}; - -string GetBitFieldName(int index) { - string varName = "bitField"; - varName += SimpleItoa(index); - varName += "_"; - return varName; -} - -string GetBitFieldNameForBit(int bitIndex) { - return GetBitFieldName(bitIndex / 32); -} - -namespace { - -string GenerateGetBitInternal(const string& prefix, int bitIndex) { - string varName = prefix + GetBitFieldNameForBit(bitIndex); - int bitInVarIndex = bitIndex % 32; - - string mask = bit_masks[bitInVarIndex]; - string result = "((" + varName + " & " + mask + ") == " + mask + ")"; - return result; -} - -string GenerateSetBitInternal(const string& prefix, int bitIndex) { - string varName = prefix + GetBitFieldNameForBit(bitIndex); - int bitInVarIndex = bitIndex % 32; - - string mask = bit_masks[bitInVarIndex]; - string result = varName + " |= " + mask; - return result; -} - -} // namespace - -string GenerateGetBit(int bitIndex) { - return GenerateGetBitInternal("", bitIndex); -} - -string GenerateSetBit(int bitIndex) { - return GenerateSetBitInternal("", bitIndex); -} - -string GenerateClearBit(int bitIndex) { - string varName = GetBitFieldNameForBit(bitIndex); - int bitInVarIndex = bitIndex % 32; - - string mask = bit_masks[bitInVarIndex]; - string result = varName + " = (" + varName + " & ~" + mask + ")"; - return result; -} - -string GenerateGetBitFromLocal(int bitIndex) { - return GenerateGetBitInternal("from_", bitIndex); -} - -string GenerateSetBitToLocal(int bitIndex) { - return GenerateSetBitInternal("to_", bitIndex); -} - -string GenerateGetBitMutableLocal(int bitIndex) { - return GenerateGetBitInternal("mutable_", bitIndex); -} - -string GenerateSetBitMutableLocal(int bitIndex) { - return GenerateSetBitInternal("mutable_", bitIndex); -} - -bool IsReferenceType(JavaType type) { - switch (type) { - case JAVATYPE_INT : return false; - case JAVATYPE_LONG : return false; - case JAVATYPE_FLOAT : return false; - case JAVATYPE_DOUBLE : return false; - case JAVATYPE_BOOLEAN: return false; - case JAVATYPE_STRING : return true; - case JAVATYPE_BYTES : return true; - case JAVATYPE_ENUM : return true; - case JAVATYPE_MESSAGE: return true; - - // No default because we want the compiler to complain if any new - // JavaTypes are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return false; -} - -const char* GetCapitalizedType(const FieldDescriptor* field, bool immutable) { - switch (GetType(field)) { - case FieldDescriptor::TYPE_INT32 : return "Int32"; - case FieldDescriptor::TYPE_UINT32 : return "UInt32"; - case FieldDescriptor::TYPE_SINT32 : return "SInt32"; - case FieldDescriptor::TYPE_FIXED32 : return "Fixed32"; - case FieldDescriptor::TYPE_SFIXED32: return "SFixed32"; - case FieldDescriptor::TYPE_INT64 : return "Int64"; - case FieldDescriptor::TYPE_UINT64 : return "UInt64"; - case FieldDescriptor::TYPE_SINT64 : return "SInt64"; - case FieldDescriptor::TYPE_FIXED64 : return "Fixed64"; - case FieldDescriptor::TYPE_SFIXED64: return "SFixed64"; - case FieldDescriptor::TYPE_FLOAT : return "Float"; - case FieldDescriptor::TYPE_DOUBLE : return "Double"; - case FieldDescriptor::TYPE_BOOL : return "Bool"; - case FieldDescriptor::TYPE_STRING : return "String"; - case FieldDescriptor::TYPE_BYTES : { - return "Bytes"; - } - case FieldDescriptor::TYPE_ENUM : return "Enum"; - case FieldDescriptor::TYPE_GROUP : return "Group"; - case FieldDescriptor::TYPE_MESSAGE : return "Message"; - - // No default because we want the compiler to complain if any new - // types are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return NULL; -} - -// For encodings with fixed sizes, returns that size in bytes. Otherwise -// returns -1. -int FixedSize(FieldDescriptor::Type type) { - switch (type) { - case FieldDescriptor::TYPE_INT32 : return -1; - case FieldDescriptor::TYPE_INT64 : return -1; - case FieldDescriptor::TYPE_UINT32 : return -1; - case FieldDescriptor::TYPE_UINT64 : return -1; - case FieldDescriptor::TYPE_SINT32 : return -1; - case FieldDescriptor::TYPE_SINT64 : return -1; - case FieldDescriptor::TYPE_FIXED32 : return WireFormatLite::kFixed32Size; - case FieldDescriptor::TYPE_FIXED64 : return WireFormatLite::kFixed64Size; - case FieldDescriptor::TYPE_SFIXED32: return WireFormatLite::kSFixed32Size; - case FieldDescriptor::TYPE_SFIXED64: return WireFormatLite::kSFixed64Size; - case FieldDescriptor::TYPE_FLOAT : return WireFormatLite::kFloatSize; - case FieldDescriptor::TYPE_DOUBLE : return WireFormatLite::kDoubleSize; - - case FieldDescriptor::TYPE_BOOL : return WireFormatLite::kBoolSize; - case FieldDescriptor::TYPE_ENUM : return -1; - - case FieldDescriptor::TYPE_STRING : return -1; - case FieldDescriptor::TYPE_BYTES : return -1; - case FieldDescriptor::TYPE_GROUP : return -1; - case FieldDescriptor::TYPE_MESSAGE : return -1; - - // No default because we want the compiler to complain if any new - // types are added. - } - GOOGLE_LOG(FATAL) << "Can't get here."; - return -1; -} - -// Sort the fields of the given Descriptor by number into a new[]'d array -// and return it. The caller should delete the returned array. -const FieldDescriptor** SortFieldsByNumber(const Descriptor* descriptor) { - const FieldDescriptor** fields = - new const FieldDescriptor*[descriptor->field_count()]; - for (int i = 0; i < descriptor->field_count(); i++) { - fields[i] = descriptor->field(i); - } - std::sort(fields, fields + descriptor->field_count(), - FieldOrderingByNumber()); - return fields; -} - -// Returns true if the message type has any required fields. If it doesn't, -// we can optimize out calls to its isInitialized() method. -// -// already_seen is used to avoid checking the same type multiple times -// (and also to protect against recursion). -bool HasRequiredFields( - const Descriptor* type, - hash_set<const Descriptor*>* already_seen) { - if (already_seen->count(type) > 0) { - // The type is already in cache. This means that either: - // a. The type has no required fields. - // b. We are in the midst of checking if the type has required fields, - // somewhere up the stack. In this case, we know that if the type - // has any required fields, they'll be found when we return to it, - // and the whole call to HasRequiredFields() will return true. - // Therefore, we don't have to check if this type has required fields - // here. - return false; - } - already_seen->insert(type); - - // If the type has extensions, an extension with message type could contain - // required fields, so we have to be conservative and assume such an - // extension exists. - if (type->extension_range_count() > 0) return true; - - for (int i = 0; i < type->field_count(); i++) { - const FieldDescriptor* field = type->field(i); - if (field->is_required()) { - return true; - } - if (GetJavaType(field) == JAVATYPE_MESSAGE) { - if (HasRequiredFields(field->message_type(), already_seen)) { - return true; - } - } - } - - return false; -} - -bool HasRequiredFields(const Descriptor* type) { - hash_set<const Descriptor*> already_seen; - return HasRequiredFields(type, &already_seen); -} - -bool HasRepeatedFields(const Descriptor* descriptor) { - for (int i = 0; i < descriptor->field_count(); ++i) { - const FieldDescriptor* field = descriptor->field(i); - if (field->is_repeated()) { - return true; - } - } - return false; -} - -} // namespace java -} // namespace compiler -} // namespace protobuf -} // namespace google |