Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/util/internal/protostream_objectwriter.h

Index: third_party/protobuf/src/google/protobuf/util/internal/protostream_objectwriter.h
diff --git a/third_party/protobuf/src/google/protobuf/util/internal/protostream_objectwriter.h b/third_party/protobuf/src/google/protobuf/util/internal/protostream_objectwriter.h
deleted file mode 100644
index eb4a59f9172574354069b7b7b17ede0c54711ab5..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/util/internal/protostream_objectwriter.h
+++ /dev/null
@@ -1,455 +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.
-
-#ifndef GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTOSTREAM_OBJECTWRITER_H__
-#define GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTOSTREAM_OBJECTWRITER_H__
-
-#include <deque>
-#include <google/protobuf/stubs/hash.h>
-#include <string>
-
-#include <google/protobuf/stubs/common.h>
-#include <google/protobuf/io/coded_stream.h>
-#include <google/protobuf/io/zero_copy_stream_impl.h>
-#include <google/protobuf/descriptor.h>
-#include <google/protobuf/util/internal/type_info.h>
-#include <google/protobuf/util/internal/datapiece.h>
-#include <google/protobuf/util/internal/error_listener.h>
-#include <google/protobuf/util/internal/structured_objectwriter.h>
-#include <google/protobuf/util/type_resolver.h>
-#include <google/protobuf/stubs/bytestream.h>
-
-namespace google {
-namespace protobuf {
-namespace io {
-class CodedOutputStream;
-}  // namespace io
-}  // namespace protobuf
-
-
-namespace protobuf {
-class Type;
-class Field;
-}  // namespace protobuf
-
-
-namespace protobuf {
-namespace util {
-namespace converter {
-
-class ObjectLocationTracker;
-
-// An ObjectWriter that can write protobuf bytes directly from writer events.
-//
-// It also supports streaming.
-class LIBPROTOBUF_EXPORT ProtoStreamObjectWriter : public StructuredObjectWriter {
- public:
-  // Constructor. Does not take ownership of any parameter passed in.
-  ProtoStreamObjectWriter(TypeResolver* type_resolver,
-                          const google::protobuf::Type& type,
-                          strings::ByteSink* output, ErrorListener* listener);
-  virtual ~ProtoStreamObjectWriter();
-
-  // ObjectWriter methods.
-  virtual ProtoStreamObjectWriter* StartObject(StringPiece name);
-  virtual ProtoStreamObjectWriter* EndObject();
-  virtual ProtoStreamObjectWriter* StartList(StringPiece name);
-  virtual ProtoStreamObjectWriter* EndList();
-  virtual ProtoStreamObjectWriter* RenderBool(StringPiece name,
-                                              bool value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderInt32(StringPiece name,
-                                               int32 value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderUint32(StringPiece name,
-                                                uint32 value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderInt64(StringPiece name,
-                                               int64 value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderUint64(StringPiece name,
-                                                uint64 value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderDouble(StringPiece name,
-                                                double value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderFloat(StringPiece name,
-                                               float value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderString(StringPiece name,
-                                                StringPiece value) {
-    return RenderDataPiece(name, DataPiece(value));
-  }
-  virtual ProtoStreamObjectWriter* RenderBytes(StringPiece name,
-                                               StringPiece value) {
-    return RenderDataPiece(name, DataPiece(value, false));
-  }
-  virtual ProtoStreamObjectWriter* RenderNull(StringPiece name) {
-    return RenderDataPiece(name, DataPiece::NullData());
-  }
-
-  // Renders a DataPiece 'value' into a field whose wire type is determined
-  // from the given field 'name'.
-  ProtoStreamObjectWriter* RenderDataPiece(StringPiece name,
-                                           const DataPiece& value);
-
-  // Returns the location tracker to use for tracking locations for errors.
-  const LocationTrackerInterface& location() {
-    return element_ != NULL ? *element_ : *tracker_;
-  }
-
-  // When true, we finished writing to output a complete message.
-  bool done() const { return done_; }
-
- private:
-  // Function that renders a well known type with modified behavior.
-  typedef util::Status (*TypeRenderer)(ProtoStreamObjectWriter*,
-                                         const DataPiece&);
-
-  // Handles writing Anys out using nested object writers and the like.
-  class LIBPROTOBUF_EXPORT AnyWriter {
-   public:
-    explicit AnyWriter(ProtoStreamObjectWriter* parent);
-    ~AnyWriter();
-
-    // Passes a StartObject call through to the Any writer.
-    void StartObject(StringPiece name);
-
-    // Passes an EndObject call through to the Any. Returns true if the any
-    // handled the EndObject call, false if the Any is now all done and is no
-    // longer needed.
-    bool EndObject();
-
-    // Passes a StartList call through to the Any writer.
-    void StartList(StringPiece name);
-
-    // Passes an EndList call through to the Any writer.
-    void EndList();
-
-    // Renders a data piece on the any.
-    void RenderDataPiece(StringPiece name, const DataPiece& value);
-
-   private:
-    // Handles starting up the any once we have a type.
-    void StartAny(const DataPiece& value);
-
-    // Writes the Any out to the parent writer in its serialized form.
-    void WriteAny();
-
-    // The parent of this writer, needed for various bits such as type info and
-    // the listeners.
-    ProtoStreamObjectWriter* parent_;
-
-    // The nested object writer, used to write events.
-    google::protobuf::scoped_ptr<ProtoStreamObjectWriter> ow_;
-
-    // The type_url_ that this Any represents.
-    string type_url_;
-
-    // Whether this any is invalid. This allows us to only report an invalid
-    // Any message a single time rather than every time we get a nested field.
-    bool invalid_;
-
-    // The output data and wrapping ByteSink.
-    string data_;
-    strings::StringByteSink output_;
-
-    // The depth within the Any, so we can track when we're done.
-    int depth_;
-
-    // True if the message type contained in Any has a special "value" message
-    // injected. This is true for well-known message types like Any or Struct.
-    bool has_injected_value_message_;
-  };
-
-  class LIBPROTOBUF_EXPORT ProtoElement : public BaseElement, public LocationTrackerInterface {
-   public:
-    // Indicates the type of element. Special types like LIST, MAP, MAP_ENTRY,
-    // STRUCT etc. are used to deduce other information based on their position
-    // on the stack of elements.
-    enum ElementType {
-      MESSAGE,       // Simple message
-      LIST,          // List/repeated element
-      MAP,           // Proto3 map type
-      MAP_ENTRY,     // Proto3 map message type, with 'key' and 'value' fields
-      ANY,           // Proto3 Any type
-      STRUCT,        // Proto3 struct type
-      STRUCT_VALUE,  // Struct's Value message type
-      STRUCT_LIST,   // List type indicator within a struct
-      STRUCT_LIST_VALUE,  // Struct Value's ListValue message type
-      STRUCT_MAP,         // Struct within a struct type
-      STRUCT_MAP_ENTRY    // Struct map's entry type with 'key' and 'value'
-                          // fields
-    };
-
-    // Constructor for the root element. No parent nor field.
-    ProtoElement(TypeInfo* typeinfo, const google::protobuf::Type& type,
-                 ProtoStreamObjectWriter* enclosing);
-
-    // Constructor for a field of an element.
-    ProtoElement(ProtoElement* parent, const google::protobuf::Field* field,
-                 const google::protobuf::Type& type, ElementType element_type);
-
-    virtual ~ProtoElement() {}
-
-    // Called just before the destructor for clean up:
-    //   - reports any missing required fields
-    //   - computes the space needed by the size field, and augment the
-    //     length of all parent messages by this additional space.
-    //   - releases and returns the parent pointer.
-    ProtoElement* pop();
-
-    // Accessors
-    const google::protobuf::Field* field() const { return field_; }
-    const google::protobuf::Type& type() const { return type_; }
-
-    // These functions return true if the element type is corresponding to the
-    // type in function name.
-    bool IsMap() { return element_type_ == MAP; }
-    bool IsStructMap() { return element_type_ == STRUCT_MAP; }
-    bool IsStructMapEntry() { return element_type_ == STRUCT_MAP_ENTRY; }
-    bool IsStructList() { return element_type_ == STRUCT_LIST; }
-    bool IsAny() { return element_type_ == ANY; }
-
-    ElementType element_type() { return element_type_; }
-
-    void RegisterField(const google::protobuf::Field* field);
-    virtual string ToString() const;
-
-    AnyWriter* any() const { return any_.get(); }
-
-    virtual ProtoElement* parent() const {
-      return static_cast<ProtoElement*>(BaseElement::parent());
-    }
-
-   private:
-    // Used for access to variables of the enclosing instance of
-    // ProtoStreamObjectWriter.
-    ProtoStreamObjectWriter* ow_;
-
-    // A writer for Any objects, handles all Any-related nonsense.
-    google::protobuf::scoped_ptr<AnyWriter> any_;
-
-    // Describes the element as a field in the parent message.
-    // field_ is NULL if and only if this element is the root element.
-    const google::protobuf::Field* field_;
-
-    // TypeInfo to lookup types.
-    TypeInfo* typeinfo_;
-
-    // Additional variables if this element is a message:
-    // (Root element is always a message).
-    // descriptor_     : describes allowed fields in the message.
-    // required_fields_: set of required fields.
-    // is_repeated_type_ : true if the element is of type list or map.
-    // size_index_     : index into ProtoStreamObjectWriter::size_insert_
-    //                   for later insertion of serialized message length.
-    const google::protobuf::Type& type_;
-    std::set<const google::protobuf::Field*> required_fields_;
-    const bool is_repeated_type_;
-    const int size_index_;
-
-    // Tracks position in repeated fields, needed for LocationTrackerInterface.
-    int array_index_;
-
-    // The type of this element, see enum for permissible types.
-    ElementType element_type_;
-
-    GOOGLE_DISALLOW_IMPLICIT_CONSTRUCTORS(ProtoElement);
-  };
-
-  // Container for inserting 'size' information at the 'pos' position.
-  struct SizeInfo {
-    const int pos;
-    int size;
-  };
-
-  ProtoStreamObjectWriter(TypeInfo* typeinfo,
-                          const google::protobuf::Type& type,
-                          strings::ByteSink* output, ErrorListener* listener);
-
-  ProtoElement* element() { return element_.get(); }
-
-  // Helper methods for calling ErrorListener. See error_listener.h.
-  void InvalidName(StringPiece unknown_name, StringPiece message);
-  void InvalidValue(StringPiece type_name, StringPiece value);
-  void MissingField(StringPiece missing_name);
-
-  // Common code for BeginObject() and BeginList() that does invalid_depth_
-  // bookkeeping associated with name lookup.
-  const google::protobuf::Field* BeginNamed(StringPiece name, bool is_list);
-
-  // Lookup the field in the current element. Looks in the base descriptor
-  // and in any extension. This will report an error if the field cannot be
-  // found or if multiple matching extensions are found.
-  const google::protobuf::Field* Lookup(StringPiece name);
-
-  // Lookup the field type in the type descriptor. Returns NULL if the type
-  // is not known.
-  const google::protobuf::Type* LookupType(
-      const google::protobuf::Field* field);
-
-  // Looks up the oneof struct Value field depending on the type.
-  // On failure to find, it returns an appropriate error.
-  util::StatusOr<const google::protobuf::Field*> LookupStructField(
-      DataPiece::Type type);
-
-  // Starts an entry in map. This will be called after placing map element at
-  // the top of the stack. Uses this information to write map entries.
-  const google::protobuf::Field* StartMapEntry(StringPiece name);
-
-  // Starts a google.protobuf.Struct.
-  // 'field' is of type google.protobuf.Struct.
-  // If field is NULL, it indicates that the top-level message is a struct
-  // type.
-  void StartStruct(const google::protobuf::Field* field);
-
-  // Starts another struct within a struct.
-  // 'field' is of type google.protobuf.Value (see struct.proto).
-  const google::protobuf::Field* StartStructValueInStruct(
-      const google::protobuf::Field* field);
-
-  // Starts a list within a struct.
-  // 'field' is of type google.protobuf.ListValue (see struct.proto).
-  const google::protobuf::Field* StartListValueInStruct(
-      const google::protobuf::Field* field);
-
-  // Starts the repeated "values" field in struct.proto's
-  // google.protobuf.ListValue type. 'field' should be of type
-  // google.protobuf.ListValue.
-  const google::protobuf::Field* StartRepeatedValuesInListValue(
-      const google::protobuf::Field* field);
-
-  // Pops sentinel elements off the stack.
-  void SkipElements();
-
-  // Write serialized output to the final output ByteSink, inserting all
-  // the size information for nested messages that are missing from the
-  // intermediate Cord buffer.
-  void WriteRootMessage();
-
-  // Returns true if the field is a map.
-  bool IsMap(const google::protobuf::Field& field);
-
-  // Returns true if the field is an any.
-  bool IsAny(const google::protobuf::Field& field);
-
-  // Helper method to write proto tags based on the given field.
-  void WriteTag(const google::protobuf::Field& field);
-
-  // Helper function to render primitive data types in DataPiece.
-  void RenderSimpleDataPiece(const google::protobuf::Field& field,
-                             const google::protobuf::Type& type,
-                             const DataPiece& data);
-
-  // Renders google.protobuf.Value in struct.proto. It picks the right oneof
-  // type based on value's type.
-  static util::Status RenderStructValue(ProtoStreamObjectWriter* ow,
-                                          const DataPiece& value);
-
-  // Renders google.protobuf.Timestamp value.
-  static util::Status RenderTimestamp(ProtoStreamObjectWriter* ow,
-                                        const DataPiece& value);
-
-  // Renders google.protobuf.FieldMask value.
-  static util::Status RenderFieldMask(ProtoStreamObjectWriter* ow,
-                                        const DataPiece& value);
-
-  // Renders google.protobuf.Duration value.
-  static util::Status RenderDuration(ProtoStreamObjectWriter* ow,
-                                       const DataPiece& value);
-
-  // Renders wrapper message types for primitive types in
-  // google/protobuf/wrappers.proto.
-  static util::Status RenderWrapperType(ProtoStreamObjectWriter* ow,
-                                          const DataPiece& value);
-
-  // Helper functions to create the map and find functions responsible for
-  // rendering well known types, keyed by type URL.
-  static hash_map<string, TypeRenderer>* CreateRendererMap();
-  static TypeRenderer* FindTypeRenderer(const string& type_url);
-
-  // Returns the ProtoElement::ElementType for the given Type.
-  static ProtoElement::ElementType GetElementType(
-      const google::protobuf::Type& type);
-
-  // Variables for describing the structure of the input tree:
-  // master_type_: descriptor for the whole protobuf message.
-  // typeinfo_ : the TypeInfo object to lookup types.
-  const google::protobuf::Type& master_type_;
-  TypeInfo* typeinfo_;
-  // Whether we own the typeinfo_ object.
-  bool own_typeinfo_;
-
-  // Indicates whether we finished writing root message completely.
-  bool done_;
-
-  // Variable for internal state processing:
-  // element_    : the current element.
-  // size_insert_: sizes of nested messages.
-  //               pos  - position to insert the size field.
-  //               size - size value to be inserted.
-  google::protobuf::scoped_ptr<ProtoElement> element_;
-  std::deque<SizeInfo> size_insert_;
-
-  // Variables for output generation:
-  // output_  : pointer to an external ByteSink for final user-visible output.
-  // buffer_  : buffer holding partial message before being ready for output_.
-  // adapter_ : internal adapter between CodedOutputStream and Cord buffer_.
-  // stream_  : wrapper for writing tags and other encodings in wire format.
-  strings::ByteSink* output_;
-  string buffer_;
-  google::protobuf::io::StringOutputStream adapter_;
-  google::protobuf::scoped_ptr<google::protobuf::io::CodedOutputStream> stream_;
-
-  // Variables for error tracking and reporting:
-  // listener_     : a place to report any errors found.
-  // invalid_depth_: number of enclosing invalid nested messages.
-  // tracker_      : the root location tracker interface.
-  ErrorListener* listener_;
-  int invalid_depth_;
-  google::protobuf::scoped_ptr<LocationTrackerInterface> tracker_;
-
-  GOOGLE_DISALLOW_IMPLICIT_CONSTRUCTORS(ProtoStreamObjectWriter);
-};
-
-}  // namespace converter
-}  // namespace util
-}  // namespace protobuf
-
-}  // namespace google
-#endif  // GOOGLE_PROTOBUF_UTIL_CONVERTER_PROTOSTREAM_OBJECTWRITER_H__