annotate 2.4.0

Decorator to set a function's __annotations__ like Py3.

annotate

Function annotations.

Overview

@annotate

Decorator to set a function’s __annotations__ like Py3.

https://www.python.org/dev/peps/pep-3107/

PyPI record.

Documentation.

Examples

from typing   import Optional, Tuple, Union, Sequence
from annotate import annotate

import jni

from .lib         import cached
from .jobjectbase import JObjectBase
from .jclass      import JClass
from .jobject     import JObject


class JArray(JObjectBase):
    """Java Array"""

    @classmethod
    @annotate('JArray', size=Union[int, long])
    def newBooleanArray(cls, size):
        ...
    ...
    @classmethod
    @annotate('JArray', size=Union[int, long])
    def newDoubleArray(cls, size):
        ...
    @classmethod
    @annotate('JArray', size=Union[int, long])
    def newStringArray(cls, size):
        ...
    @classmethod
    @annotate('JArray', size=Union[int, long], component_class=JClass)
    def newObjectArray(cls, size, component_class):
        ...

    @annotate(jenv=jni.JNIEnv, jarr=jni.jarray, borrowed=bool)
    def __init__(self, jenv, jarr, borrowed=False):
        ...

    def __hash__(self):
        return super(JArray, self).__hash__()

    def __len__(self):
        return self.getLength()

    @annotate(JObject, borrowed=bool)
    def asObject(self, borrowed=False):
        ...

    @cached
    @annotate(int)
    def getLength(self):
        ...

    @annotate(bool, idx=int)
    def getBoolean(self, idx):
        ...
    ...
    @annotate(float, idx=int)
    def getDouble(self, idx):
        ...
    @annotate(Optional[str], idx=int)
    def getString(self, idx):
        ...
    @annotate(Optional[JObject], idx=int)
    def getObject(self, idx):
        ...

    @annotate(idx=int, val=bool)
    def setBoolean(self, idx, val):
        ...
    @annotate(idx=int, val=str)
    def setChar(self, idx, val):
        ...
    ...
    @annotate(idx=int, val=Union[int, long])
    def setLong(self, idx, val):
        ...
    @annotate(idx=int, val=float)
    def setDouble(self, idx, val):
        ...
    @annotate(idx=int, val=Optional[str])
    def setString(self, idx, val):
        ...
    @annotate(idx=int, val=Optional[JObject])
    def setObject(self, idx, val):
        ...

    @annotate('JArray', start=int, stop=int, step=int)
    def getBooleanSlice(self, start, stop, step):
        ...
    ...
    @annotate('JArray', start=int, stop=int, step=int)
    def getDoubleSlice(self, start, stop, step):
        ...
    @annotate('JArray', start=int, stop=int, step=int)
    def getStringSlice(self, start, stop, step):
        ...
    @annotate('JArray', start=int, stop=int, step=int)
    def getObjectSlice(self, start, stop, step):
        ...

    @annotate(start=int, stop=int, step=int, val=Sequence[bool])
    def setBooleanSlice(self, start, stop, step, val):
        ...
    @annotate(start=int, stop=int, step=int, val=Union[Sequence[str], str])
    def setCharSlice(self, start, stop, step, val):
        ...
    @annotate(start=int, stop=int, step=int,
              val=Union[Sequence[Union[int,bytes]], (bytes, bytearray)])
    def setByteSlice(self, start, stop, step, val):
        ...
    ...
    @annotate(start=int, stop=int, step=int, val=Sequence[float])
    def setDoubleSlice(self, start, stop, step, val):
        ...
    @annotate(start=int, stop=int, step=int, val=Sequence[Optional[str]])
    def setStringSlice(self, start, stop, step, val):
        ...
    @annotate(start=int, stop=int, step=int, val=Sequence[Optional[JObject]])
    def setObjectSlice(self, start, stop, step, val):
        ...

    @annotate(Tuple)
    def getBooleanBuffer(self):
        with self.jvm as (jvm, jenv):
            is_copy = jni.jboolean()
            return jenv.GetBooleanArrayElements(self._jobj, is_copy), jni.sizeof(jni.jboolean), b"B", is_copy
    ...
    @annotate(Tuple)
    def getDoubleBuffer(self):
        with self.jvm as (jvm, jenv):
            is_copy = jni.jboolean()
            return jenv.GetDoubleArrayElements(self._jobj, is_copy), jni.sizeof(jni.jdouble), b"d", is_copy

    @annotate(buf=object)
    def releaseBooleanBuffer(self, buf):
        with self.jvm as (jvm, jenv):
            jenv.ReleaseBooleanArrayElements(self._jobj, jni.cast(buf, jni.POINTER(jni.jboolean)))
    ...
    @annotate(buf=object)
    def releaseDoubleBuffer(self, buf):
        with self.jvm as (jvm, jenv):
            jenv.ReleaseDoubleArrayElements(self._jobj, jni.cast(buf, jni.POINTER(jni.jdouble)))

Installation

Prerequisites:

• Python 3.11 or higher

  • https://www.python.org/

• pip

  • https://pypi.org/project/pip/

To install run:

python -m pip install --upgrade annotate

Development

Prerequisites:

• Development is strictly based on nox. To install it run:

  python -m pip install --upgrade nox

Visit Development page.

Installation from sources:

clone the sources:

git clone https://github.com/karpierz/annotate annotate

and run:

python -m pip install ./annotate

or on development mode:

python -m pip install --editable ./annotate

License

Copyright (c) 2012-2026 Adam Karpierz

Licensed under the zlib/libpng License

https://opensource.org/license/zlib

Please refer to the accompanying LICENSE file.

Authors

• Adam Karpierz <[e-mail]>

Sponsoring

If you would like to sponsor the development of this project, your contribution is greatly appreciated.

As I am now retired, any support helps me dedicate more time to maintaining and improving this work.

Donate