jni_core

Tiny Cython runtime that the jni-wrap cython generator targets.

It contains only what generated code needs to call JNI directly:

• jni.pxd — cdef extern from "jni.h" declarations (JNIEnv, JavaVM, jobject, jmethodID, ...).
• core.pxd / core.pyx — get_env(), check_jni_exc(), base JavaObject cdef class with global-ref RAII, method/field-ID cache helpers.
• conversions.pxi — inline primitive / jstring / primitive-array converters.

The generator emits per-class .pyx/.pxd modules that cimport from here and call JNIEnv directly.

Building

jni.h is located via $JAVA_HOME/include (and include/<platform>).

export JAVA_HOME=$(/usr/libexec/java_home)   # macOS
pip install -e .
pytest tests/