unix/modjni: "jni" module to interface to JNI-compliant JavaVM.

This includes Android Dalvik VM for example.

Example usage:

import jni
System = jni.cls("java/lang/System")
System.out.println("Hello, Java!")

unix/Makefile

@@ -101,6 +101,11 @@ LDFLAGS_MOD += $(LIBFFI_LDFLAGS_MOD)
 SRC_MOD += modffi.c
 endif
 
+ifeq ($(MICROPY_PY_JNI),1)
+# Path for 64-bit OpenJDK, should be adjusted for other JDKs
+CFLAGS_MOD += -I/usr/lib/jvm/java-7-openjdk-amd64/include -DMICROPY_PY_JNI=1
+SRC_MOD += modjni.c
+endif
 
 # source files
 SRC_C = \

unix/mpconfigport.h

@@ -123,12 +123,18 @@ extern const struct _mp_obj_module_t mp_module_time;
 extern const struct _mp_obj_module_t mp_module_termios;
 extern const struct _mp_obj_module_t mp_module_socket;
 extern const struct _mp_obj_module_t mp_module_ffi;
+extern const struct _mp_obj_module_t mp_module_jni;
 
 #if MICROPY_PY_FFI
 #define MICROPY_PY_FFI_DEF { MP_OBJ_NEW_QSTR(MP_QSTR_ffi), (mp_obj_t)&mp_module_ffi },
 #else
 #define MICROPY_PY_FFI_DEF
 #endif
+#if MICROPY_PY_JNI
+#define MICROPY_PY_JNI_DEF { MP_OBJ_NEW_QSTR(MP_QSTR_jni), (mp_obj_t)&mp_module_jni },
+#else
+#define MICROPY_PY_JNI_DEF
+#endif
 #if MICROPY_PY_TIME
 #define MICROPY_PY_TIME_DEF { MP_OBJ_NEW_QSTR(MP_QSTR_utime), (mp_obj_t)&mp_module_time },
 #else
@@ -147,6 +153,7 @@ extern const struct _mp_obj_module_t mp_module_ffi;
 
 #define MICROPY_PORT_BUILTIN_MODULES \
     MICROPY_PY_FFI_DEF \
+    MICROPY_PY_JNI_DEF \
     MICROPY_PY_TIME_DEF \
     MICROPY_PY_SOCKET_DEF \
     { MP_OBJ_NEW_QSTR(MP_QSTR__os), (mp_obj_t)&mp_module_os }, \

unix/mpconfigport.mk

@@ -20,3 +20,6 @@ MICROPY_PY_SOCKET = 1
 
 # ffi module requires libffi (libffi-dev Debian package)
 MICROPY_PY_FFI = 1
+
+# jni module requires JVM/JNI
+MICROPY_PY_JNI = 0

unix/qstrdefsport.h

@@ -102,3 +102,11 @@ Q(B9600)
 Q(B57600)
 Q(B115200)
 #endif
+
+#if MICROPY_PY_JNI
+Q(jni)
+Q(cls)
+Q(jclass)
+Q(jobject)
+Q(jmethod)
+#endif