diff options
Diffstat (limited to 'src/google/protobuf/compiler/java/java_helpers.h')
| -rw-r--r-- | src/google/protobuf/compiler/java/java_helpers.h | 205 |
1 files changed, 183 insertions, 22 deletions
diff --git a/src/google/protobuf/compiler/java/java_helpers.h b/src/google/protobuf/compiler/java/java_helpers.h index 3c8974c..93f23a9 100644 --- a/src/google/protobuf/compiler/java/java_helpers.h +++ b/src/google/protobuf/compiler/java/java_helpers.h @@ -1,6 +1,6 @@ // Protocol Buffers - Google's data interchange format // Copyright 2008 Google Inc. All rights reserved. -// http://code.google.com/p/protobuf/ +// 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 @@ -49,6 +49,9 @@ namespace java { extern const char kThickSeparator[]; extern const char kThinSeparator[]; +// Converts a name to camel-case. If cap_first_letter is true, capitalize the +// first letter. +string UnderscoresToCamelCase(const string& name, bool cap_first_letter); // Converts the field's name to camel-case, e.g. "foo_bar_baz" becomes // "fooBarBaz" or "FooBarBaz", respectively. string UnderscoresToCamelCase(const FieldDescriptor* field); @@ -58,36 +61,70 @@ string UnderscoresToCapitalizedCamelCase(const FieldDescriptor* field); // of lower-casing the first letter of the name.) string UnderscoresToCamelCase(const MethodDescriptor* method); +// Get an identifier that uniquely identifies this type within the file. +// This is used to declare static variables related to this type at the +// outermost file scope. +string UniqueFileScopeIdentifier(const Descriptor* descriptor); + // Strips ".proto" or ".protodevel" from the end of a filename. string StripProto(const string& filename); -// Gets the unqualified class name for the file. Each .proto file becomes a -// single Java class, with all its contents nested in that class. -string FileClassName(const FileDescriptor* file); +// Gets the unqualified class name for the file. For each .proto file, there +// will be one Java class containing all the immutable messages and another +// Java class containing all the mutable messages. +// TODO(xiaofeng): remove the default value after updating client code. +string FileClassName(const FileDescriptor* file, bool immutable = true); // Returns the file's Java package name. -string FileJavaPackage(const FileDescriptor* file); +string FileJavaPackage(const FileDescriptor* file, bool immutable = true); + +// Returns output directory for the given package name. +string JavaPackageToDir(string package_name); // Converts the given fully-qualified name in the proto namespace to its // fully-qualified name in the Java namespace, given that it is in the given // file. -string ToJavaName(const string& full_name, const FileDescriptor* file); +// TODO(xiaofeng): this method is deprecated and should be removed in the +// future. +string ToJavaName(const string& full_name, + const FileDescriptor* file); -// These return the fully-qualified class name corresponding to the given -// descriptor. -inline string ClassName(const Descriptor* descriptor) { - return ToJavaName(descriptor->full_name(), descriptor->file()); -} -inline string ClassName(const EnumDescriptor* descriptor) { - return ToJavaName(descriptor->full_name(), descriptor->file()); -} -inline string ClassName(const ServiceDescriptor* descriptor) { - return ToJavaName(descriptor->full_name(), descriptor->file()); +// TODO(xiaofeng): the following methods are kept for they are exposed +// publicly in //google/protobuf/compiler/java/names.h. They return +// immutable names only and should be removed after mutable API is +// integrated into google3. +string ClassName(const Descriptor* descriptor); +string ClassName(const EnumDescriptor* descriptor); +string ClassName(const ServiceDescriptor* descriptor); +string ClassName(const FileDescriptor* descriptor); + +// Comma-separate list of option-specified interfaces implemented by the +// Message, to follow the "implements" declaration of the Message definition. +string ExtraMessageInterfaces(const Descriptor* descriptor); +// Comma-separate list of option-specified interfaces implemented by the +// MutableMessage, to follow the "implements" declaration of the MutableMessage +// definition. +string ExtraMutableMessageInterfaces(const Descriptor* descriptor); +// Comma-separate list of option-specified interfaces implemented by the +// Builder, to follow the "implements" declaration of the Builder definition. +string ExtraBuilderInterfaces(const Descriptor* descriptor); +// Comma-separate list of option-specified interfaces extended by the +// MessageOrBuilder, to follow the "extends" declaration of the +// MessageOrBuilder definition. +string ExtraMessageOrBuilderInterfaces(const Descriptor* descriptor); + +// Get the unqualified Java class name for mutable messages. i.e. without +// package or outer classnames. +inline string ShortMutableJavaClassName(const Descriptor* descriptor) { + return descriptor->name(); } -inline string ExtensionIdentifierName(const FieldDescriptor* descriptor) { - return ToJavaName(descriptor->full_name(), descriptor->file()); + + +// Whether we should generate multiple java files for messages. +inline bool MultipleJavaFiles( + const FileDescriptor* descriptor, bool immutable) { + return descriptor->options().java_multiple_files(); } -string ClassName(const FileDescriptor* descriptor); // Get the unqualified name that should be used for a field's field // number constant. @@ -117,10 +154,23 @@ JavaType GetJavaType(const FieldDescriptor* field); // types. const char* BoxedPrimitiveTypeName(JavaType type); -string DefaultValue(const FieldDescriptor* field); +// Get the name of the java enum constant representing this type. E.g., +// "INT32" for FieldDescriptor::TYPE_INT32. The enum constant's full +// name is "com.google.protobuf.WireFormat.FieldType.INT32". +const char* FieldTypeName(const FieldDescriptor::Type field_type); -// Does this message class keep track of unknown fields? -inline bool HasUnknownFields(const Descriptor* descriptor) { +class ClassNameResolver; +string DefaultValue(const FieldDescriptor* field, bool immutable, + ClassNameResolver* name_resolver); +inline string ImmutableDefaultValue(const FieldDescriptor* field, + ClassNameResolver* name_resolver) { + return DefaultValue(field, true, name_resolver); +} +bool IsDefaultValueJavaDefault(const FieldDescriptor* field); + +// Does this message class use UnknownFieldSet? +// Otherwise, unknown fields will be stored in a ByteString object +inline bool UseUnknownFieldSet(const Descriptor* descriptor) { return descriptor->file()->options().optimize_for() != FileOptions::LITE_RUNTIME; } @@ -132,6 +182,11 @@ inline bool HasGeneratedMethods(const Descriptor* descriptor) { FileOptions::CODE_SIZE; } +// Does this message have specialized equals() and hashCode() methods? +inline bool HasEqualsAndHashCode(const Descriptor* descriptor) { + return descriptor->file()->options().java_generate_equals_and_hash(); +} + // Does this message class have descriptor and reflection methods? inline bool HasDescriptorMethods(const Descriptor* descriptor) { return descriptor->file()->options().optimize_for() != @@ -146,6 +201,12 @@ inline bool HasDescriptorMethods(const FileDescriptor* descriptor) { FileOptions::LITE_RUNTIME; } +inline bool HasNestedBuilders(const Descriptor* descriptor) { + // The proto-lite version doesn't support nested builders. + return descriptor->file()->options().optimize_for() != + FileOptions::LITE_RUNTIME; +} + // Should we generate generic services for this file? inline bool HasGenericServices(const FileDescriptor *file) { return file->service_count() > 0 && @@ -153,6 +214,106 @@ inline bool HasGenericServices(const FileDescriptor *file) { file->options().java_generic_services(); } +inline bool IsLazy(const FieldDescriptor* descriptor) { + // Currently, the proto-lite version suports lazy field. + // TODO(niwasaki): Support lazy fields also for other proto runtimes. + if (descriptor->file()->options().optimize_for() != + FileOptions::LITE_RUNTIME) { + return false; + } + return descriptor->options().lazy(); +} + +// Methods for shared bitfields. + +// Gets the name of the shared bitfield for the given index. +string GetBitFieldName(int index); + +// Gets the name of the shared bitfield for the given bit index. +// Effectively, GetBitFieldName(bitIndex / 32) +string GetBitFieldNameForBit(int bitIndex); + +// Generates the java code for the expression that returns the boolean value +// of the bit of the shared bitfields for the given bit index. +// Example: "((bitField1_ & 0x04) == 0x04)" +string GenerateGetBit(int bitIndex); + +// Generates the java code for the expression that sets the bit of the shared +// bitfields for the given bit index. +// Example: "bitField1_ = (bitField1_ | 0x04)" +string GenerateSetBit(int bitIndex); + +// Generates the java code for the expression that clears the bit of the shared +// bitfields for the given bit index. +// Example: "bitField1_ = (bitField1_ & ~0x04)" +string GenerateClearBit(int bitIndex); + +// Does the same as GenerateGetBit but operates on the bit field on a local +// variable. This is used by the builder to copy the value in the builder to +// the message. +// Example: "((from_bitField1_ & 0x04) == 0x04)" +string GenerateGetBitFromLocal(int bitIndex); + +// Does the same as GenerateSetBit but operates on the bit field on a local +// variable. This is used by the builder to copy the value in the builder to +// the message. +// Example: "to_bitField1_ = (to_bitField1_ | 0x04)" +string GenerateSetBitToLocal(int bitIndex); + +// Does the same as GenerateGetBit but operates on the bit field on a local +// variable. This is used by the parsing constructor to record if a repeated +// field is mutable. +// Example: "((mutable_bitField1_ & 0x04) == 0x04)" +string GenerateGetBitMutableLocal(int bitIndex); + +// Does the same as GenerateSetBit but operates on the bit field on a local +// variable. This is used by the parsing constructor to record if a repeated +// field is mutable. +// Example: "mutable_bitField1_ = (mutable_bitField1_ | 0x04)" +string GenerateSetBitMutableLocal(int bitIndex); + +// Returns whether the JavaType is a reference type. +bool IsReferenceType(JavaType type); + +// Returns the capitalized name for calling relative functions in +// CodedInputStream +const char* GetCapitalizedType(const FieldDescriptor* field, bool immutable); + +// For encodings with fixed sizes, returns that size in bytes. Otherwise +// returns -1. +int FixedSize(FieldDescriptor::Type type); + +// Comparators used to sort fields in MessageGenerator +struct FieldOrderingByNumber { + inline bool operator()(const FieldDescriptor* a, + const FieldDescriptor* b) const { + return a->number() < b->number(); + } +}; + +struct ExtensionRangeOrdering { + bool operator()(const Descriptor::ExtensionRange* a, + const Descriptor::ExtensionRange* b) const { + return a->start < b->start; + } +}; + +// 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); + +// Check a message type and its sub-message types recursively to see if any of +// them has a required field. Return true if a required field is found. +bool HasRequiredFields(const Descriptor* descriptor); + +// Whether a .proto file supports field presence test for non-message types. +inline bool SupportFieldPresence(const FileDescriptor* descriptor) { + return true; +} + +// Check whether a mesasge has repeated fields. +bool HasRepeatedFields(const Descriptor* descriptor); + } // namespace java } // namespace compiler } // namespace protobuf |