Boost Beast Translation (zh_Hans)/Doc / Qbk / 07 Concepts / Buffersgenerator (qbk)

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2 string ID 12
	Source string description type: paragraph

	English A [*BuffersGenerator] provides a generalized interface for generating serialized data for sequential processing. 112/10000 · 112
3 string ID 15
	Source string description type: paragraph

	English The generator will be asked to produce buffers. The consuming code will signal how much of the data has been consumed, and repeatedly query for buffers until no more data is available, or the generator indicates an error condition. 231/10000 · 231
4 string ID 19
	Source string description type: paragraph

	English In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types. 241/10000 · 241
5 string ID 24
	Source string description type: paragraph

	English Overloads of [link beast.ref.boost__beast__write `write`] and [link beast.ref.boost__beast__async_write `async_write`] operations are provided as free functions. These operations will consume the output of a [*BuffersGenerator] and process the data by writing them to a __SyncWriteStream__ or __AsyncWriteStream__ respectively. 327/10000 · 327
6 string ID 30
	Source string description type: heading

	English Associated Types 16/10000 · 16
7 string ID 32
	Source string description type: list

	English * [link beast.ref.boost__beast__is_buffers_generator `is_buffers_generator`] * __ConstBufferSequence__ 102/10000 · 102
8 string ID 35
	Source string description type: heading

	English Requirements 12/10000 · 12
9 string ID 37
	Source string description type: paragraph

	English In this table: 14/10000 · 14
10 string ID 39
	Source string description type: list

	English * `G` denotes a type meeting the requirements of [BuffersGenerator]. `g` denotes a value of type `G`. * `c` denotes a possibly-const value of type `G`. * `n` is a value of type `std::size_t`. * `ec` is a value of type [link beast.ref.boost__beast__error_code `error_code&`]. 277/10000 · 277
11 string ID 45
	Source string description type: table title

	English Valid expressions 17/10000 · 17
12 string ID 45
	Source string description type: table cell

	English Expression 10/10000 · 10
13 string ID 45
	Source string description type: table cell

	English Type 4/10000 · 4
14 string ID 45
	Source string description type: table cell

	English Semantics, Pre/Post-conditions 30/10000 · 30
45 string ID 45
	Source string description type: table cell

	English `G::const_buffers_type` 23/10000 · 23
16 string ID 45
	Source string description type: table cell

	English A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `g.prepare(ec)`. 119/10000 · 119
17 string ID 45
	Source string description type: table cell

	English `c.is_done()` 13/10000 · 13
18 string ID 45
	Source string description type: table cell

	English `bool` 6/10000 · 6
19 string ID 45
	Source string description type: table cell

	English Called to ask the generator for its completion status. A generator has completed when no new buffer will be produced and previously produced buffers have been fully consumed. [*Note:] The result of invoking `prepare` on `g` once it has completed is unspecified. 263/10000 · 263
20 string ID 45
	Source string description type: table cell

	English `g.prepare(ec)` 15/10000 · 15
21 string ID 45
	Source string description type: table cell

	English Called to ask the generator to produce buffers containing data for processing. The returned value is the __ConstBufferSequence__ representing unconsumed data. The function will ensure that `ec.failed()` is `false` if there was no error or set to the appropriate error code if there was one. If no unconsumed data is available, this operation shall make progress to eventually reach completion. The result of invoking `prepare` after completion or encountered error(s) is defined by the generator implementation. It can not be assumed to be meaningful or safe to do so, in general. The capacity of the buffer returned is defined by the generator implementation. [*Note:] Any buffers obtained by previous calls to `prepare` are invalidated. 744/10000 · 744

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