protozero::basic_pbf_writer< TBuffer > Class Template Reference

`#include <basic_pbf_writer.hpp>`

Inheritance diagram for protozero::basic_pbf_writer< TBuffer >:
[legend]

## Public Member Functions

| basic_pbf_writer (TBuffer &buffer) noexcept
| basic_pbf_writer () noexcept=default
| basic_pbf_writer (basic_pbf_writer &parent_writer, pbf_tag_type tag, std::size_t size=0)
| basic_pbf_writer (const basic_pbf_writer &)=delete
| A basic_pbf_writer object can not be copied.
basic_pbf_writer & | operator= (const basic_pbf_writer &)=delete
| A basic_pbf_writer object can not be copied.
| basic_pbf_writer (basic_pbf_writer &&other) noexcept
basic_pbf_writer & | operator= (basic_pbf_writer &&other) noexcept
bool | valid () const noexcept
void | swap (basic_pbf_writer &other) noexcept
void | reserve (std::size_t size)
void | commit ()
void | rollback ()
Scalar field writer functions
void | add_bool (pbf_tag_type tag, bool value)
void | add_enum (pbf_tag_type tag, int32_t value)
void | add_int32 (pbf_tag_type tag, int32_t value)
void | add_sint32 (pbf_tag_type tag, int32_t value)
void | add_uint32 (pbf_tag_type tag, uint32_t value)
void | add_int64 (pbf_tag_type tag, int64_t value)
void | add_sint64 (pbf_tag_type tag, int64_t value)
void | add_uint64 (pbf_tag_type tag, uint64_t value)
void | add_fixed32 (pbf_tag_type tag, uint32_t value)
void | add_sfixed32 (pbf_tag_type tag, int32_t value)
void | add_fixed64 (pbf_tag_type tag, uint64_t value)
void | add_sfixed64 (pbf_tag_type tag, int64_t value)
void | add_float (pbf_tag_type tag, float value)
void | add_double (pbf_tag_type tag, double value)
void | add_bytes (pbf_tag_type tag, const char *value, std::size_t size)
void | add_bytes (pbf_tag_type tag, const data_view &value)
void | add_bytes (pbf_tag_type tag, const std::string &value)
void | add_bytes (pbf_tag_type tag, const char *value)
template<typename... Ts>
void | add_bytes_vectored (pbf_tag_type tag, Ts &&... values)
void | add_string (pbf_tag_type tag, const char *value, std::size_t size)
void | add_string (pbf_tag_type tag, const data_view &value)
void | add_string (pbf_tag_type tag, const std::string &value)
void | add_string (pbf_tag_type tag, const char *value)
void | add_message (pbf_tag_type tag, const char *value, std::size_t size)
void | add_message (pbf_tag_type tag, const data_view &value)
void | add_message (pbf_tag_type tag, const std::string &value)
Repeated packed field writer functions
template<typename InputIterator >
void | add_packed_bool (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_enum (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_int32 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_sint32 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_uint32 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_int64 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_sint64 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_uint64 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename ValueType , typename InputIterator >
void | add_packed_fixed (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_fixed32 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_sfixed32 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_fixed64 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_sfixed64 (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_float (pbf_tag_type tag, InputIterator first, InputIterator last)
template<typename InputIterator >
void | add_packed_double (pbf_tag_type tag, InputIterator first, InputIterator last)

## Friends

template<typename B , typename T >
class | detail::packed_field_varint
template<typename B , typename T >
class | detail::packed_field_svarint
template<typename B , typename T >
class | detail::packed_field_fixed

## Detailed Description

### template<typename TBuffer>
class protozero::basic_pbf_writer< TBuffer >

The basic_pbf_writer is used to write PBF formatted messages into a buffer.

This uses TBuffer as the type for the underlaying buffer. In typical uses this is std::string, but you can use a different type that must support the right interface. Please see the documentation for details.

Almost all methods in this class can throw an std::bad_alloc exception if the underlying buffer class wants to resize.

## Constructor & Destructor Documentation

## basic_pbf_writer() [1/4]

template<typename TBuffer >

protozero::basic_pbf_writer< TBuffer >::basic_pbf_writer | ( | TBuffer & | buffer | ) |

inline explicit noexcept

Create a writer using the specified buffer as a data store. The basic_pbf_writer stores a pointer to that buffer and adds all data to it. The buffer doesn't have to be empty. The basic_pbf_writer will just append data.

## basic_pbf_writer() [2/4]

template<typename TBuffer >

protozero::basic_pbf_writer< TBuffer >::basic_pbf_writer | ( |  | ) |

default noexcept

Create a writer without a data store. In this form the writer can not be used!

## basic_pbf_writer() [3/4]

template<typename TBuffer >

protozero::basic_pbf_writer< TBuffer >::basic_pbf_writer | ( | basic_pbf_writer< TBuffer > & | parent_writer,
|  | pbf_tag_type | tag,
|  | std::size_t | size = `0`
| ) |  |

inline

Construct a basic_pbf_writer for a submessage from the basic_pbf_writer of the parent message.

Parameters

  parent_writer | The basic_pbf_writer
  tag | Tag (field number) of the field that will be written
  size | Optional size of the submessage in bytes (use 0 for unknown). Setting this allows some optimizations but is only possible in a few very specific cases.

## basic_pbf_writer() [4/4]

template<typename TBuffer >

protozero::basic_pbf_writer< TBuffer >::basic_pbf_writer | ( | basic_pbf_writer< TBuffer > && | other | ) |

inline noexcept

A basic_pbf_writer object can be moved. After this the other basic_pbf_writer will be invalid.

## Member Function Documentation

## add_bool()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_bool | ( | pbf_tag_type | tag,
|  | bool | value
| ) |  |

inline

Add "bool" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_bytes() [1/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_bytes | ( | pbf_tag_type | tag,
|  | const char * | value
| ) |  |

inline

Add "bytes" field to data. Bytes from the value are written until a null byte is encountered. The null byte is not added.

Parameters

  tag | Tag (field number) of the field
  value | Pointer to zero-delimited value to be written

## add_bytes() [2/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_bytes | ( | pbf_tag_type | tag,
|  | const char * | value,
|  | std::size_t | size
| ) |  |

inline

Add "bytes" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Pointer to value to be written
  size | Number of bytes to be written

## add_bytes() [3/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_bytes | ( | pbf_tag_type | tag,
|  | const data_view & | value
| ) |  |

inline

Add "bytes" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_bytes() [4/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_bytes | ( | pbf_tag_type | tag,
|  | const std::string & | value
| ) |  |

inline

Add "bytes" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_bytes_vectored()

template<typename TBuffer >
template<typename... Ts>

void protozero::basic_pbf_writer< TBuffer >::add_bytes_vectored | ( | pbf_tag_type | tag,
|  | Ts &&... | values
| ) |  |

inline

Add "bytes" field to data using vectored input. All the data in the 2nd and further arguments is "concatenated" with only a single copy into the final buffer.

This will work with objects of any type supporting the data() and size() methods like std::string or protozero::data_view.

Example:

std::string data1 = "abc";
std::string data2 = "xyz";
writer.add_bytes_vectored(1, data1, data2);

Template Parameters

  Ts | List of types supporting data() and size() methods.

Parameters

  tag | Tag (field number) of the field
  values | List of objects of types Ts with data to be appended.

## add_double()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_double | ( | pbf_tag_type | tag,
|  | double | value
| ) |  |

inline

Add "double" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_enum()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_enum | ( | pbf_tag_type | tag,
|  | int32_t | value
| ) |  |

inline

Add "enum" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_fixed32()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_fixed32 | ( | pbf_tag_type | tag,
|  | uint32_t | value
| ) |  |

inline

Add "fixed32" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_fixed64()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_fixed64 | ( | pbf_tag_type | tag,
|  | uint64_t | value
| ) |  |

inline

Add "fixed64" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_float()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_float | ( | pbf_tag_type | tag,
|  | float | value
| ) |  |

inline

Add "float" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_int32()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_int32 | ( | pbf_tag_type | tag,
|  | int32_t | value
| ) |  |

inline

Add "int32" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_int64()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_int64 | ( | pbf_tag_type | tag,
|  | int64_t | value
| ) |  |

inline

Add "int64" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_message() [1/3]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_message | ( | pbf_tag_type | tag,
|  | const char * | value,
|  | std::size_t | size
| ) |  |

inline

Add "message" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Pointer to message to be written
  size | Length of the message

## add_message() [2/3]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_message | ( | pbf_tag_type | tag,
|  | const data_view & | value
| ) |  |

inline

Add "message" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written. The value must be a complete message.

## add_message() [3/3]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_message | ( | pbf_tag_type | tag,
|  | const std::string & | value
| ) |  |

inline

Add "message" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written. The value must be a complete message.

## add_packed_bool()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_bool | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed bool" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to bool.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_double()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_double | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed double" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to double.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_enum()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_enum | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed enum" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int32_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_fixed()

template<typename TBuffer >
template<typename ValueType , typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_fixed | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add a "repeated packed" fixed-size field to data. The following fixed-size fields are available:

uint32_t -> repeated packed fixed32 int32_t -> repeated packed sfixed32 uint64_t -> repeated packed fixed64 int64_t -> repeated packed sfixed64 double -> repeated packed double float -> repeated packed float

Template Parameters

  ValueType | One of the following types: (u)int32/64_t, double, float.
  InputIterator | A type satisfying the InputIterator concept.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_fixed32()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_fixed32 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed fixed32" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to uint32_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_fixed64()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_fixed64 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed fixed64" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to uint64_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_float()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_float | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed float" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to float.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_int32()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_int32 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed int32" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int32_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_int64()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_int64 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed int64" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int64_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_sfixed32()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_sfixed32 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed sfixed32" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int32_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_sfixed64()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_sfixed64 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed sfixed64" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int64_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_sint32()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_sint32 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed sint32" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int32_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_sint64()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_sint64 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed sint64" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to int64_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_uint32()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_uint32 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed uint32" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to uint32_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_packed_uint64()

template<typename TBuffer >
template<typename InputIterator >

void protozero::basic_pbf_writer< TBuffer >::add_packed_uint64 | ( | pbf_tag_type | tag,
|  | InputIterator | first,
|  | InputIterator | last
| ) |  |

inline

Add "repeated packed uint64" field to data.

Template Parameters

  InputIterator | A type satisfying the InputIterator concept. Dereferencing the iterator must yield a type assignable to uint64_t.

Parameters

  tag | Tag (field number) of the field
  first | Iterator pointing to the beginning of the data
  last | Iterator pointing one past the end of data

## add_sfixed32()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_sfixed32 | ( | pbf_tag_type | tag,
|  | int32_t | value
| ) |  |

inline

Add "sfixed32" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_sfixed64()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_sfixed64 | ( | pbf_tag_type | tag,
|  | int64_t | value
| ) |  |

inline

Add "sfixed64" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_sint32()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_sint32 | ( | pbf_tag_type | tag,
|  | int32_t | value
| ) |  |

inline

Add "sint32" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_sint64()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_sint64 | ( | pbf_tag_type | tag,
|  | int64_t | value
| ) |  |

inline

Add "sint64" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_string() [1/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_string | ( | pbf_tag_type | tag,
|  | const char * | value
| ) |  |

inline

Add "string" field to data. Bytes from the value are written until a null byte is encountered. The null byte is not added.

Parameters

  tag | Tag (field number) of the field
  value | Pointer to value to be written

## add_string() [2/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_string | ( | pbf_tag_type | tag,
|  | const char * | value,
|  | std::size_t | size
| ) |  |

inline

Add "string" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Pointer to value to be written
  size | Number of bytes to be written

## add_string() [3/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_string | ( | pbf_tag_type | tag,
|  | const data_view & | value
| ) |  |

inline

Add "string" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_string() [4/4]

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_string | ( | pbf_tag_type | tag,
|  | const std::string & | value
| ) |  |

inline

Add "string" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_uint32()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_uint32 | ( | pbf_tag_type | tag,
|  | uint32_t | value
| ) |  |

inline

Add "uint32" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## add_uint64()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::add_uint64 | ( | pbf_tag_type | tag,
|  | uint64_t | value
| ) |  |

inline

Add "uint64" field to data.

Parameters

  tag | Tag (field number) of the field
  value | Value to be written

## commit()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::commit | ( |  | ) |

inline

Commit this submessage. This does the same as when the basic_pbf_writer goes out of scope and is destructed.

Precondition
  Must be a basic_pbf_writer of a submessage, ie one opened with the basic_pbf_writer constructor taking a parent message.

Postcondition
  The basic_pbf_writer is invalid and can't be used any more.

## operator=()

template<typename TBuffer >

basic_pbf_writer& protozero::basic_pbf_writer< TBuffer >::operator= | ( | basic_pbf_writer< TBuffer > && | other | ) |

inline noexcept

A basic_pbf_writer object can be moved. After this the other basic_pbf_writer will be invalid.

## reserve()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::reserve | ( | std::size_t | size | ) |

inline

Reserve size bytes in the underlying message store in addition to whatever the message store already holds. So unlike the `std::string::reserve()` method this is not an absolute size, but additional memory that should be reserved.

Parameters

  size | Number of bytes to reserve in underlying message store.

## rollback()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::rollback | ( |  | ) |

inline

Cancel writing of this submessage. The complete submessage will be removed as if it was never created and no fields were added.

Precondition
  Must be a basic_pbf_writer of a submessage, ie one opened with the basic_pbf_writer constructor taking a parent message.

Postcondition
  The basic_pbf_writer is invalid and can't be used any more.

## swap()

template<typename TBuffer >

void protozero::basic_pbf_writer< TBuffer >::swap | ( | basic_pbf_writer< TBuffer > & | other | ) |

inline noexcept

Swap the contents of this object with the other.

Parameters

  other | Other object to swap data with.

## valid()

template<typename TBuffer >

bool protozero::basic_pbf_writer< TBuffer >::valid | ( |  | ) | const

inline noexcept

Check if this writer is valid. A writer is invalid if it was default constructed, moved from, or if commit() has been called on it. Otherwise it is valid.

The documentation for this class was generated from the following file:

- include/protozero/basic_pbf_writer.hpp