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195 lines
7.3 KiB
C++
195 lines
7.3 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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#ifndef GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_FIELD_H__
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#define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_FIELD_H__
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#include <map>
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#include <string>
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#include <thirdparty/protobuf/compiler/objectivec/objectivec_helpers.h>
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#include <thirdparty/protobuf/descriptor.h>
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#include <thirdparty/protobuf/io/printer.h>
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namespace google {
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namespace protobuf {
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namespace compiler {
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namespace objectivec {
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class FieldGenerator {
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public:
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static FieldGenerator* Make(const FieldDescriptor* field,
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const Options& options);
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virtual ~FieldGenerator();
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FieldGenerator(const FieldGenerator&) = delete;
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FieldGenerator& operator=(const FieldGenerator&) = delete;
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// Exposed for subclasses to fill in.
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virtual void GenerateFieldStorageDeclaration(io::Printer* printer) const = 0;
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virtual void GeneratePropertyDeclaration(io::Printer* printer) const = 0;
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virtual void GeneratePropertyImplementation(io::Printer* printer) const = 0;
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// Called by GenerateFieldDescription, exposed for classes that need custom
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// generation.
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// Exposed for subclasses to extend, base does nothing.
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virtual void GenerateCFunctionDeclarations(io::Printer* printer) const;
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virtual void GenerateCFunctionImplementations(io::Printer* printer) const;
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// Exposed for subclasses, should always call it on the parent class also.
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virtual void DetermineForwardDeclarations(
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std::set<std::string>* fwd_decls) const;
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virtual void DetermineObjectiveCClassDefinitions(
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std::set<std::string>* fwd_decls) const;
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// Used during generation, not intended to be extended by subclasses.
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void GenerateFieldDescription(
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io::Printer* printer, bool include_default) const;
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void GenerateFieldNumberConstant(io::Printer* printer) const;
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// Exposed to get and set the has bits information.
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virtual bool RuntimeUsesHasBit(void) const = 0;
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void SetRuntimeHasBit(int has_index);
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void SetNoHasBit(void);
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virtual int ExtraRuntimeHasBitsNeeded(void) const;
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virtual void SetExtraRuntimeHasBitsBase(int index_base);
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void SetOneofIndexBase(int index_base);
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std::string variable(const char* key) const {
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return variables_.find(key)->second;
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}
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bool needs_textformat_name_support() const {
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const std::string& field_flags = variable("fieldflags");
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return field_flags.find("GPBFieldTextFormatNameCustom") !=
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std::string::npos;
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}
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std::string generated_objc_name() const { return variable("name"); }
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std::string raw_field_name() const { return variable("raw_field_name"); }
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protected:
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FieldGenerator(const FieldDescriptor* descriptor, const Options& options);
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virtual void FinishInitialization(void);
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bool WantsHasProperty(void) const;
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const FieldDescriptor* descriptor_;
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std::map<std::string, std::string> variables_;
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};
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class SingleFieldGenerator : public FieldGenerator {
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public:
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virtual ~SingleFieldGenerator();
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SingleFieldGenerator(const SingleFieldGenerator&) = delete;
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SingleFieldGenerator& operator=(const SingleFieldGenerator&) = delete;
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virtual void GenerateFieldStorageDeclaration(io::Printer* printer) const override;
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virtual void GeneratePropertyDeclaration(io::Printer* printer) const override;
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virtual void GeneratePropertyImplementation(io::Printer* printer) const override;
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virtual bool RuntimeUsesHasBit(void) const override;
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protected:
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SingleFieldGenerator(const FieldDescriptor* descriptor,
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const Options& options);
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};
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// Subclass with common support for when the field ends up as an ObjC Object.
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class ObjCObjFieldGenerator : public SingleFieldGenerator {
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public:
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virtual ~ObjCObjFieldGenerator();
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ObjCObjFieldGenerator(const ObjCObjFieldGenerator&) = delete;
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ObjCObjFieldGenerator& operator=(const ObjCObjFieldGenerator&) = delete;
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virtual void GenerateFieldStorageDeclaration(io::Printer* printer) const override;
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virtual void GeneratePropertyDeclaration(io::Printer* printer) const override;
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protected:
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ObjCObjFieldGenerator(const FieldDescriptor* descriptor,
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const Options& options);
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};
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class RepeatedFieldGenerator : public ObjCObjFieldGenerator {
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public:
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virtual ~RepeatedFieldGenerator();
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RepeatedFieldGenerator(const RepeatedFieldGenerator&) = delete;
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RepeatedFieldGenerator& operator=(const RepeatedFieldGenerator&) = delete;
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virtual void GenerateFieldStorageDeclaration(io::Printer* printer) const override;
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virtual void GeneratePropertyDeclaration(io::Printer* printer) const override;
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virtual void GeneratePropertyImplementation(io::Printer* printer) const override;
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virtual bool RuntimeUsesHasBit(void) const override;
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protected:
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RepeatedFieldGenerator(const FieldDescriptor* descriptor,
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const Options& options);
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virtual void FinishInitialization(void) override;
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};
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// Convenience class which constructs FieldGenerators for a Descriptor.
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class FieldGeneratorMap {
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public:
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FieldGeneratorMap(const Descriptor* descriptor, const Options& options);
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~FieldGeneratorMap();
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FieldGeneratorMap(const FieldGeneratorMap&) = delete;
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FieldGeneratorMap& operator=(const FieldGeneratorMap&) = delete;
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const FieldGenerator& get(const FieldDescriptor* field) const;
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const FieldGenerator& get_extension(int index) const;
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// Assigns the has bits and returns the number of bits needed.
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int CalculateHasBits(void);
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void SetOneofIndexBase(int index_base);
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// Check if any field of this message has a non zero default.
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bool DoesAnyFieldHaveNonZeroDefault(void) const;
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private:
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const Descriptor* descriptor_;
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std::vector<std::unique_ptr<FieldGenerator>> field_generators_;
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std::vector<std::unique_ptr<FieldGenerator>> extension_generators_;
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};
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} // namespace objectivec
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} // namespace compiler
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} // namespace protobuf
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} // namespace google
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#endif // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_FIELD_H__
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