Module wasmtime.bindgen.generated.imports.streams

Classes

class HostStreams (*args, **kwargs)

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class HostStreams(Protocol):
    @abstractmethod
    def drop_input_stream(self, this: InputStream) -> None:
        raise NotImplementedError
    @abstractmethod
    def write(self, this: OutputStream, buf: bytes) -> Result[Tuple[int, StreamStatus], None]:
        raise NotImplementedError
    @abstractmethod
    def blocking_write(self, this: OutputStream, buf: bytes) -> Result[Tuple[int, StreamStatus], None]:
        raise NotImplementedError
    @abstractmethod
    def drop_output_stream(self, this: OutputStream) -> None:
        raise NotImplementedError

Base class for protocol classes.

Protocol classes are defined as::

class Proto(Protocol):
    def meth(self) -> int:
        ...

Such classes are primarily used with static type checkers that recognize structural subtyping (static duck-typing).

For example::

class C:
    def meth(self) -> int:
        return 0

def func(x: Proto) -> int:
    return x.meth()

func(C())  # Passes static type check

See PEP 544 for details. Protocol classes decorated with @typing.runtime_checkable act as simple-minded runtime protocols that check only the presence of given attributes, ignoring their type signatures. Protocol classes can be generic, they are defined as::

class GenProto[T](Protocol):
    def meth(self) -> T:
        ...

Ancestors

• typing.Protocol
• typing.Generic

Subclasses

• wasmtime.bindgen.WasiStreams

Methods

def blocking_write(self, this: int, buf: bytes) ‑> Ok[typing.Tuple[int, StreamStatus]] | Err[None]

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@abstractmethod
def blocking_write(self, this: OutputStream, buf: bytes) -> Result[Tuple[int, StreamStatus], None]:
    raise NotImplementedError

def drop_input_stream(self, this: int) ‑> None

Expand source code

@abstractmethod
def drop_input_stream(self, this: InputStream) -> None:
    raise NotImplementedError

def drop_output_stream(self, this: int) ‑> None

Expand source code

@abstractmethod
def drop_output_stream(self, this: OutputStream) -> None:
    raise NotImplementedError

def write(self, this: int, buf: bytes) ‑> Ok[typing.Tuple[int, StreamStatus]] | Err[None]

Expand source code

@abstractmethod
def write(self, this: OutputStream, buf: bytes) -> Result[Tuple[int, StreamStatus], None]:
    raise NotImplementedError

class StreamStatus (*args, **kwds)

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class StreamStatus(Enum):
    OPEN = 0
    ENDED = 1

Create a collection of name/value pairs.

Example enumeration:

>>> class Color(Enum):
...     RED = 1
...     BLUE = 2
...     GREEN = 3

Access them by:

• attribute access:

Color.RED

• value lookup:

Color(1)

• name lookup:

Color['RED']

Enumerations can be iterated over, and know how many members they have:

>>> len(Color)
3

>>> list(Color)
[<Color.RED: 1>, <Color.BLUE: 2>, <Color.GREEN: 3>]

Methods can be added to enumerations, and members can have their own attributes – see the documentation for details.

Ancestors

• enum.Enum

Class variables

var ENDED

var OPEN