refactor the conversion functions, move them into jnius_conversion.pxi, and factorize the jobject conversion.

This commit is contained in:
Mathieu Virbel 2012-08-15 17:26:24 +02:00
parent a4af093aa1
commit 69fe77c403
2 changed files with 354 additions and 410 deletions

View File

@ -96,6 +96,7 @@ IF JNIUS_PLATFORM == "android":
include "jnius_jvm_android.pxi" include "jnius_jvm_android.pxi"
ELSE: ELSE:
include "jnius_jvm_desktop.pxi" include "jnius_jvm_desktop.pxi"
include "jnius_conversion.pxi"
cdef parse_definition(definition): cdef parse_definition(definition):
@ -130,320 +131,6 @@ cdef parse_definition(definition):
return ret, args return ret, args
cdef convert_jarray_to_python(JNIEnv *j_env, definition, jobject j_object):
cdef jboolean iscopy
cdef jboolean *j_booleans
cdef jbyte *j_bytes
cdef jchar *j_chars
cdef jshort *j_shorts
cdef jint *j_ints
cdef jlong *j_longs
cdef jfloat *j_floats
cdef jdouble *j_doubles
cdef object ret = None
cdef jsize array_size
cdef int i
cdef jobject obj
cdef char *c_str
cdef bytes py_str
cdef JavaObject ret_jobject
cdef JavaClass ret_jc
if j_object == NULL:
return None
array_size = j_env[0].GetArrayLength(j_env, j_object)
r = definition[0]
if r == 'Z':
j_booleans = j_env[0].GetBooleanArrayElements(
j_env, j_object, &iscopy)
ret = [(True if j_booleans[i] else False)
for i in range(array_size)]
if iscopy:
j_env[0].ReleaseBooleanArrayElements(
j_env, j_object, j_booleans, 0)
elif r == 'B':
j_bytes = j_env[0].GetByteArrayElements(
j_env, j_object, &iscopy)
ret = [(<char>j_bytes[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseByteArrayElements(
j_env, j_object, j_bytes, 0)
elif r == 'C':
j_chars = j_env[0].GetCharArrayElements(
j_env, j_object, &iscopy)
ret = [(<char>j_chars[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseCharArrayElements(
j_env, j_object, j_chars, 0)
elif r == 'S':
j_shorts = j_env[0].GetShortArrayElements(
j_env, j_object, &iscopy)
ret = [(<short>j_shorts[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseShortArrayElements(
j_env, j_object, j_shorts, 0)
elif r == 'I':
j_ints = j_env[0].GetIntArrayElements(
j_env, j_object, &iscopy)
ret = [(<int>j_ints[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseIntArrayElements(
j_env, j_object, j_ints, 0)
elif r == 'J':
j_longs = j_env[0].GetLongArrayElements(
j_env, j_object, &iscopy)
ret = [(<long>j_longs[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseLongArrayElements(
j_env, j_object, j_longs, 0)
elif r == 'F':
j_floats = j_env[0].GetFloatArrayElements(
j_env, j_object, &iscopy)
ret = [(<float>j_floats[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseFloatArrayElements(
j_env, j_object, j_floats, 0)
elif r == 'D':
j_doubles = j_env[0].GetDoubleArrayElements(
j_env, j_object, &iscopy)
ret = [(<double>j_doubles[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseDoubleArrayElements(
j_env, j_object, j_doubles, 0)
elif r == 'L':
r = definition[1:-1]
ret = []
if r == 'java/lang/String':
for i in range(array_size):
obj = j_env[0].GetObjectArrayElement(
j_env, j_object, i)
if obj == NULL:
ret.append(None)
continue
c_str = <char *>j_env[0].GetStringUTFChars(
j_env, obj, NULL)
py_str = <bytes>c_str
j_env[0].ReleaseStringUTFChars(
j_env, j_object, c_str)
ret.append(py_str)
j_env[0].DeleteLocalRef(j_env, obj)
elif r in jclass_register:
for i in range(array_size):
obj = j_env[0].GetObjectArrayElement(
j_env, j_object, i)
ret_jc = jclass_register[r](noinstance=True)
ret_jc.instanciate_from(obj)
ret.append(ret_jc)
j_env[0].DeleteLocalRef(j_env, obj)
else:
for i in range(array_size):
obj = j_env[0].GetObjectArrayElement(
j_env, j_object, i)
if obj == NULL:
ret.append(None)
continue
ret_jobject = JavaObject()
ret_jobject.obj = obj
ret.append(ret_jobject)
else:
raise JavaException('Invalid return definition for array')
return ret
cdef void release_args(JNIEnv *j_env, list definition_args, jvalue *j_args, args) except *:
# do the conversion from a Python object to Java from a Java definition
cdef JavaObject jo
cdef JavaClass jc
cdef int index
for index, argtype in enumerate(definition_args):
py_arg = args[index]
if argtype[0] == 'L':
if py_arg is None:
j_args[index].l = NULL
if isinstance(py_arg, basestring) and \
argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
j_env[0].DeleteLocalRef(j_env, j_args[index].l)
elif argtype[0] == '[':
j_env[0].DeleteLocalRef(j_env, j_args[index].l)
cdef void populate_args(JNIEnv *j_env, list definition_args, jvalue *j_args, args) except *:
# do the conversion from a Python object to Java from a Java definition
cdef JavaObject jo
cdef JavaClass jc
cdef int index
for index, argtype in enumerate(definition_args):
py_arg = args[index]
if argtype == 'Z':
j_args[index].z = py_arg
elif argtype == 'B':
j_args[index].b = py_arg
elif argtype == 'C':
j_args[index].c = ord(py_arg)
elif argtype == 'S':
j_args[index].s = py_arg
elif argtype == 'I':
j_args[index].i = py_arg
elif argtype == 'J':
j_args[index].j = py_arg
elif argtype == 'F':
j_args[index].f = py_arg
elif argtype == 'D':
j_args[index].d = py_arg
elif argtype[0] == 'L':
if py_arg is None:
j_args[index].l = NULL
elif isinstance(py_arg, basestring) and \
argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
j_args[index].l = j_env[0].NewStringUTF(
j_env, <char *><bytes>py_arg)
elif isinstance(py_arg, JavaClass):
jc = py_arg
if argtype != 'Ljava/lang/Object;' and jc.__javaclass__ != argtype[1:-1]:
raise JavaException('Invalid class argument, want '
'{0!r}, got {1!r}'.format(
argtype[1:-1], jc.__javaclass__))
j_args[index].l = jc.j_self
elif isinstance(py_arg, JavaObject):
jo = py_arg
j_args[index].l = jo.obj
raise JavaException('JavaObject needed for argument '
'{0}'.format(index))
else:
raise JavaException('Invalid python object for this '
'argument. Want {0!r}, got {1!r}'.format(
argtype[1:-1], py_arg))
elif argtype[0] == '[':
if not isinstance(py_arg, list) and \
not isinstance(py_arg, tuple):
raise JavaException('Expecting a python list/tuple, got '
'{0!r}'.format(py_arg))
j_args[index].l = convert_pyarray_to_java(
j_env, argtype[1:], py_arg)
cdef jobject convert_pyarray_to_java(JNIEnv *j_env, definition, pyarray) except *:
cdef jobject ret = NULL
cdef int array_size = len(pyarray)
cdef int i
cdef jboolean j_boolean
cdef jbyte j_byte
cdef jchar j_char
cdef jshort j_short
cdef jint j_int
cdef jlong j_long
cdef jfloat j_float
cdef jdouble j_double
cdef jstring j_string
cdef jclass j_class
cdef JavaObject jo
cdef JavaClass jc
if definition == 'Z':
ret = j_env[0].NewBooleanArray(j_env, array_size)
for i in range(array_size):
j_boolean = 1 if pyarray[i] else 0
j_env[0].SetBooleanArrayRegion(j_env,
ret, i, 1, &j_boolean)
elif definition == 'B':
ret = j_env[0].NewByteArray(j_env, array_size)
for i in range(array_size):
j_byte = pyarray[i]
j_env[0].SetByteArrayRegion(j_env,
ret, i, 1, &j_byte)
elif definition == 'C':
ret = j_env[0].NewCharArray(j_env, array_size)
for i in range(array_size):
j_char = ord(pyarray[i])
j_env[0].SetCharArrayRegion(j_env,
ret, i, 1, &j_char)
elif definition == 'S':
ret = j_env[0].NewShortArray(j_env, array_size)
for i in range(array_size):
j_short = pyarray[i]
j_env[0].SetShortArrayRegion(j_env,
ret, i, 1, &j_short)
elif definition == 'I':
ret = j_env[0].NewIntArray(j_env, array_size)
for i in range(array_size):
j_int = pyarray[i]
j_env[0].SetIntArrayRegion(j_env,
ret, i, 1, <const_jint *>&j_int)
elif definition == 'J':
ret = j_env[0].NewLongArray(j_env, array_size)
for i in range(array_size):
j_long = pyarray[i]
j_env[0].SetLongArrayRegion(j_env,
ret, i, 1, &j_long)
elif definition == 'F':
ret = j_env[0].NewFloatArray(j_env, array_size)
for i in range(array_size):
j_float = pyarray[i]
j_env[0].SetFloatArrayRegion(j_env,
ret, i, 1, &j_float)
elif definition == 'D':
ret = j_env[0].NewDoubleArray(j_env, array_size)
for i in range(array_size):
j_double = pyarray[i]
j_env[0].SetDoubleArrayRegion(j_env,
ret, i, 1, &j_double)
elif definition[0] == 'L':
j_class = j_env[0].FindClass(
j_env, <bytes>definition[1:-1])
if j_class == NULL:
raise JavaException('Cannot create array with a class not '
'found {0!r}'.format(definition[1:-1]))
ret = j_env[0].NewObjectArray(
j_env, array_size, j_class, NULL)
for i in range(array_size):
arg = pyarray[i]
if arg is None:
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, NULL)
elif isinstance(arg, basestring) and \
definition == 'Ljava/lang/String;':
j_string = j_env[0].NewStringUTF(
j_env, <bytes>arg)
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, j_string)
elif isinstance(arg, JavaClass):
jc = arg
if jc.__javaclass__ != definition[1:-1]:
raise JavaException('Invalid class argument, want '
'{0!r}, got {1!r}'.format(
definition[1:-1],
jc.__javaclass__))
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, jc.j_self)
elif isinstance(arg, JavaObject):
jo = arg
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, jo.obj)
else:
raise JavaException('Invalid variable used for L array')
else:
raise JavaException('Invalid array definition')
return <jobject>ret
cdef void check_exception(JNIEnv *j_env) except *: cdef void check_exception(JNIEnv *j_env) except *:
cdef jthrowable exc = j_env[0].ExceptionOccurred(j_env) cdef jthrowable exc = j_env[0].ExceptionOccurred(j_env)
@ -759,31 +446,15 @@ cdef class JavaField(object):
elif r == 'L': elif r == 'L':
j_object = self.j_env[0].GetObjectField( j_object = self.j_env[0].GetObjectField(
self.j_env, self.j_self, self.j_field) self.j_env, self.j_self, self.j_field)
if j_object == NULL: if j_object != NULL:
return None ret = convert_jobject_to_python(
r = self.definition[1:-1] self.j_env, self.definition, j_object)
if r == 'java/lang/Object':
r = lookup_java_object_name(self.j_env, j_object)
if r == 'java/lang/String':
c_str = <char *>self.j_env[0].GetStringUTFChars(
self.j_env, j_object, NULL)
py_str = <bytes>c_str
self.j_env[0].ReleaseStringUTFChars(
self.j_env, j_object, c_str)
ret = py_str
elif r in jclass_register:
ret_jc = jclass_register[r](noinstance=True)
ret_jc.instanciate_from(j_object)
ret = ret_jc
else:
ret_jobject = JavaObject()
ret_jobject.obj = self.j_env[0].NewLocalRef(self.j_env, j_object)
ret = ret_jobject
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
elif r == '[': elif r == '[':
r = self.definition[1:] r = self.definition[1:]
j_object = self.j_env[0].GetObjectField( j_object = self.j_env[0].GetObjectField(
self.j_env, self.j_self, self.j_field) self.j_env, self.j_self, self.j_field)
if j_object != NULL:
ret = convert_jarray_to_python(self.j_env, r, j_object) ret = convert_jarray_to_python(self.j_env, r, j_object)
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
else: else:
@ -802,11 +473,7 @@ cdef class JavaField(object):
cdef jfloat j_float cdef jfloat j_float
cdef jdouble j_double cdef jdouble j_double
cdef jobject j_object cdef jobject j_object
cdef char *c_str
cdef bytes py_str
cdef object ret = None cdef object ret = None
cdef JavaObject ret_jobject
cdef JavaClass ret_jc
# return type of the java method # return type of the java method
r = self.definition[0] r = self.definition[0]
@ -847,31 +514,15 @@ cdef class JavaField(object):
elif r == 'L': elif r == 'L':
j_object = self.j_env[0].GetStaticObjectField( j_object = self.j_env[0].GetStaticObjectField(
self.j_env, self.j_self, self.j_field) self.j_env, self.j_self, self.j_field)
if j_object == NULL: if j_object != NULL:
return None ret = convert_jobject_to_python(
r = self.definition[1:-1] self.j_env, self.definition, j_object)
if r == 'java/lang/Object':
r = lookup_java_object_name(self.j_env, j_object)
if r == 'java/lang/String':
c_str = <char *>self.j_env[0].GetStringUTFChars(
self.j_env, j_object, NULL)
py_str = <bytes>c_str
self.j_env[0].ReleaseStringUTFChars(
self.j_env, j_object, c_str)
ret = py_str
elif r in jclass_register:
ret_jc = jclass_register[r](noinstance=True)
ret_jc.instanciate_from(j_object)
ret = ret_jc
else:
ret_jobject = JavaObject()
ret_jobject.obj = self.j_env[0].NewLocalRef(self.j_env, j_object)
ret = ret_jobject
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
elif r == '[': elif r == '[':
r = self.definition[1:] r = self.definition[1:]
j_object = self.j_env[0].GetStaticObjectField( j_object = self.j_env[0].GetStaticObjectField(
self.j_env, self.j_self, self.j_field) self.j_env, self.j_self, self.j_field)
if j_object != NULL:
ret = convert_jarray_to_python(self.j_env, r, j_object) ret = convert_jarray_to_python(self.j_env, r, j_object)
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
else: else:
@ -1032,32 +683,15 @@ cdef class JavaMethod(object):
elif r == 'L': elif r == 'L':
j_object = self.j_env[0].CallObjectMethodA( j_object = self.j_env[0].CallObjectMethodA(
self.j_env, self.j_self, self.j_method, j_args) self.j_env, self.j_self, self.j_method, j_args)
check_exception(self.j_env) if j_object != NULL:
if j_object == NULL: ret = convert_jobject_to_python(
return None self.j_env, self.definition_return, j_object)
r = self.definition_return[1:-1]
if r == 'java/lang/Object':
r = lookup_java_object_name(self.j_env, j_object)
if r == 'java/lang/String':
c_str = <char *>self.j_env[0].GetStringUTFChars(
self.j_env, j_object, NULL)
py_str = <bytes>c_str
self.j_env[0].ReleaseStringUTFChars(
self.j_env, j_object, c_str)
ret = py_str
elif r in jclass_register:
ret_jc = jclass_register[r](noinstance=True)
ret_jc.instanciate_from(j_object)
ret = ret_jc
else:
ret_jobject = JavaObject()
ret_jobject.obj = self.j_env[0].NewLocalRef(self.j_env, j_object)
ret = ret_jobject
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
elif r == '[': elif r == '[':
r = self.definition_return[1:] r = self.definition_return[1:]
j_object = self.j_env[0].CallObjectMethodA( j_object = self.j_env[0].CallObjectMethodA(
self.j_env, self.j_self, self.j_method, j_args) self.j_env, self.j_self, self.j_method, j_args)
if j_object != NULL:
ret = convert_jarray_to_python(self.j_env, r, j_object) ret = convert_jarray_to_python(self.j_env, r, j_object)
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
else: else:
@ -1122,32 +756,17 @@ cdef class JavaMethod(object):
self.j_env, self.j_cls, self.j_method, j_args) self.j_env, self.j_cls, self.j_method, j_args)
ret = <double>j_double ret = <double>j_double
elif r == 'L': elif r == 'L':
# accept only string for the moment
j_object = self.j_env[0].CallStaticObjectMethodA( j_object = self.j_env[0].CallStaticObjectMethodA(
self.j_env, self.j_cls, self.j_method, j_args) self.j_env, self.j_cls, self.j_method, j_args)
r = self.definition_return[1:-1] if j_object != NULL:
if r == 'java/lang/Object': ret = convert_jobject_to_python(
r = lookup_java_object_name(self.j_env, j_object) self.j_env, self.definition_return, j_object)
if r == 'java/lang/String':
c_str = <char *>self.j_env[0].GetStringUTFChars(
self.j_env, j_object, NULL)
py_str = <bytes>c_str
self.j_env[0].ReleaseStringUTFChars(
self.j_env, j_object, c_str)
ret = py_str
elif r in jclass_register:
ret_jc = jclass_register[r](noinstance=True)
ret_jc.instanciate_from(j_object)
ret = ret_jc
else:
ret_jobject = JavaObject()
ret_jobject.obj = self.j_env[0].NewLocalRef(self.j_env, j_object)
ret = ret_jobject
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
elif r == '[': elif r == '[':
r = self.definition_return[1:] r = self.definition_return[1:]
j_object = self.j_env[0].CallStaticObjectMethodA( j_object = self.j_env[0].CallStaticObjectMethodA(
self.j_env, self.j_cls, self.j_method, j_args) self.j_env, self.j_cls, self.j_method, j_args)
if j_object != NULL:
ret = convert_jarray_to_python(self.j_env, r, j_object) ret = convert_jarray_to_python(self.j_env, r, j_object)
self.j_env[0].DeleteLocalRef(self.j_env, j_object) self.j_env[0].DeleteLocalRef(self.j_env, j_object)
else: else:

325
jnius/jnius_conversion.pxi Normal file
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@ -0,0 +1,325 @@
cdef convert_jobject_to_python(JNIEnv *j_env, bytes definition, jobject j_object):
# Convert a Java Object to a Python object, according to the definition.
# If the definition is a java/lang/Object, then try to determine what is it
# exactly.
cdef char *c_str
cdef bytes py_str
cdef bytes r = definition[1:-1]
cdef JavaObject ret_jobject
cdef JavaClass ret_jc
# we got a generic object -> lookup for the real name instead.
if r == 'java/lang/Object':
r = lookup_java_object_name(j_env, j_object)
# if we got a string, just convert back to Python str.
if r == 'java/lang/String':
c_str = <char *>j_env[0].GetStringUTFChars(j_env, j_object, NULL)
py_str = <bytes>c_str
j_env[0].ReleaseStringUTFChars(j_env, j_object, c_str)
return py_str
# if the class is already in our register, use it
if r in jclass_register:
ret_jc = jclass_register[r](noinstance=True)
ret_jc.instanciate_from(j_object)
return ret_jc
# otherwise, return a generic object, without any reflection.
ret_jobject = JavaObject()
ret_jobject.obj = j_env[0].NewLocalRef(j_env, j_object)
return ret_jobject
cdef convert_jarray_to_python(JNIEnv *j_env, definition, jobject j_object):
cdef jboolean iscopy
cdef jboolean *j_booleans
cdef jbyte *j_bytes
cdef jchar *j_chars
cdef jshort *j_shorts
cdef jint *j_ints
cdef jlong *j_longs
cdef jfloat *j_floats
cdef jdouble *j_doubles
cdef object ret = None
cdef jsize array_size
cdef int i
cdef jobject j_object_item
cdef char *c_str
cdef bytes py_str
cdef JavaObject ret_jobject
cdef JavaClass ret_jc
if j_object == NULL:
return None
array_size = j_env[0].GetArrayLength(j_env, j_object)
r = definition[0]
if r == 'Z':
j_booleans = j_env[0].GetBooleanArrayElements(
j_env, j_object, &iscopy)
ret = [(True if j_booleans[i] else False)
for i in range(array_size)]
if iscopy:
j_env[0].ReleaseBooleanArrayElements(
j_env, j_object, j_booleans, 0)
elif r == 'B':
j_bytes = j_env[0].GetByteArrayElements(
j_env, j_object, &iscopy)
ret = [(<char>j_bytes[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseByteArrayElements(
j_env, j_object, j_bytes, 0)
elif r == 'C':
j_chars = j_env[0].GetCharArrayElements(
j_env, j_object, &iscopy)
ret = [(<char>j_chars[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseCharArrayElements(
j_env, j_object, j_chars, 0)
elif r == 'S':
j_shorts = j_env[0].GetShortArrayElements(
j_env, j_object, &iscopy)
ret = [(<short>j_shorts[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseShortArrayElements(
j_env, j_object, j_shorts, 0)
elif r == 'I':
j_ints = j_env[0].GetIntArrayElements(
j_env, j_object, &iscopy)
ret = [(<int>j_ints[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseIntArrayElements(
j_env, j_object, j_ints, 0)
elif r == 'J':
j_longs = j_env[0].GetLongArrayElements(
j_env, j_object, &iscopy)
ret = [(<long>j_longs[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseLongArrayElements(
j_env, j_object, j_longs, 0)
elif r == 'F':
j_floats = j_env[0].GetFloatArrayElements(
j_env, j_object, &iscopy)
ret = [(<float>j_floats[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseFloatArrayElements(
j_env, j_object, j_floats, 0)
elif r == 'D':
j_doubles = j_env[0].GetDoubleArrayElements(
j_env, j_object, &iscopy)
ret = [(<double>j_doubles[i]) for i in range(array_size)]
if iscopy:
j_env[0].ReleaseDoubleArrayElements(
j_env, j_object, j_doubles, 0)
elif r == 'L':
r = definition[1:-1]
ret = []
for i in range(array_size):
j_object_item = j_env[0].GetObjectArrayElement(
j_env, j_object, i)
if j_object_item == NULL:
ret.append(None)
continue
obj = convert_jobject_to_python(j_env, definition, j_object_item)
ret.append(obj)
j_env[0].DeleteLocalRef(j_env, j_object_item)
else:
raise JavaException('Invalid return definition for array')
return ret
cdef void release_args(JNIEnv *j_env, list definition_args, jvalue *j_args, args) except *:
# do the conversion from a Python object to Java from a Java definition
cdef JavaObject jo
cdef JavaClass jc
cdef int index
for index, argtype in enumerate(definition_args):
py_arg = args[index]
if argtype[0] == 'L':
if py_arg is None:
j_args[index].l = NULL
if isinstance(py_arg, basestring) and \
argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
j_env[0].DeleteLocalRef(j_env, j_args[index].l)
elif argtype[0] == '[':
j_env[0].DeleteLocalRef(j_env, j_args[index].l)
cdef void populate_args(JNIEnv *j_env, list definition_args, jvalue *j_args, args) except *:
# do the conversion from a Python object to Java from a Java definition
cdef JavaObject jo
cdef JavaClass jc
cdef int index
for index, argtype in enumerate(definition_args):
py_arg = args[index]
if argtype == 'Z':
j_args[index].z = py_arg
elif argtype == 'B':
j_args[index].b = py_arg
elif argtype == 'C':
j_args[index].c = ord(py_arg)
elif argtype == 'S':
j_args[index].s = py_arg
elif argtype == 'I':
j_args[index].i = py_arg
elif argtype == 'J':
j_args[index].j = py_arg
elif argtype == 'F':
j_args[index].f = py_arg
elif argtype == 'D':
j_args[index].d = py_arg
elif argtype[0] == 'L':
if py_arg is None:
j_args[index].l = NULL
elif isinstance(py_arg, basestring) and \
argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
j_args[index].l = j_env[0].NewStringUTF(
j_env, <char *><bytes>py_arg)
elif isinstance(py_arg, JavaClass):
jc = py_arg
if argtype != 'Ljava/lang/Object;' and jc.__javaclass__ != argtype[1:-1]:
raise JavaException('Invalid class argument, want '
'{0!r}, got {1!r}'.format(
argtype[1:-1], jc.__javaclass__))
j_args[index].l = jc.j_self
elif isinstance(py_arg, JavaObject):
jo = py_arg
j_args[index].l = jo.obj
raise JavaException('JavaObject needed for argument '
'{0}'.format(index))
else:
raise JavaException('Invalid python object for this '
'argument. Want {0!r}, got {1!r}'.format(
argtype[1:-1], py_arg))
elif argtype[0] == '[':
if not isinstance(py_arg, list) and \
not isinstance(py_arg, tuple):
raise JavaException('Expecting a python list/tuple, got '
'{0!r}'.format(py_arg))
j_args[index].l = convert_pyarray_to_java(
j_env, argtype[1:], py_arg)
cdef jobject convert_pyarray_to_java(JNIEnv *j_env, definition, pyarray) except *:
cdef jobject ret = NULL
cdef int array_size = len(pyarray)
cdef int i
cdef jboolean j_boolean
cdef jbyte j_byte
cdef jchar j_char
cdef jshort j_short
cdef jint j_int
cdef jlong j_long
cdef jfloat j_float
cdef jdouble j_double
cdef jstring j_string
cdef jclass j_class
cdef JavaObject jo
cdef JavaClass jc
if definition == 'Z':
ret = j_env[0].NewBooleanArray(j_env, array_size)
for i in range(array_size):
j_boolean = 1 if pyarray[i] else 0
j_env[0].SetBooleanArrayRegion(j_env,
ret, i, 1, &j_boolean)
elif definition == 'B':
ret = j_env[0].NewByteArray(j_env, array_size)
for i in range(array_size):
j_byte = pyarray[i]
j_env[0].SetByteArrayRegion(j_env,
ret, i, 1, &j_byte)
elif definition == 'C':
ret = j_env[0].NewCharArray(j_env, array_size)
for i in range(array_size):
j_char = ord(pyarray[i])
j_env[0].SetCharArrayRegion(j_env,
ret, i, 1, &j_char)
elif definition == 'S':
ret = j_env[0].NewShortArray(j_env, array_size)
for i in range(array_size):
j_short = pyarray[i]
j_env[0].SetShortArrayRegion(j_env,
ret, i, 1, &j_short)
elif definition == 'I':
ret = j_env[0].NewIntArray(j_env, array_size)
for i in range(array_size):
j_int = pyarray[i]
j_env[0].SetIntArrayRegion(j_env,
ret, i, 1, <const_jint *>&j_int)
elif definition == 'J':
ret = j_env[0].NewLongArray(j_env, array_size)
for i in range(array_size):
j_long = pyarray[i]
j_env[0].SetLongArrayRegion(j_env,
ret, i, 1, &j_long)
elif definition == 'F':
ret = j_env[0].NewFloatArray(j_env, array_size)
for i in range(array_size):
j_float = pyarray[i]
j_env[0].SetFloatArrayRegion(j_env,
ret, i, 1, &j_float)
elif definition == 'D':
ret = j_env[0].NewDoubleArray(j_env, array_size)
for i in range(array_size):
j_double = pyarray[i]
j_env[0].SetDoubleArrayRegion(j_env,
ret, i, 1, &j_double)
elif definition[0] == 'L':
j_class = j_env[0].FindClass(
j_env, <bytes>definition[1:-1])
if j_class == NULL:
raise JavaException('Cannot create array with a class not '
'found {0!r}'.format(definition[1:-1]))
ret = j_env[0].NewObjectArray(
j_env, array_size, j_class, NULL)
for i in range(array_size):
arg = pyarray[i]
if arg is None:
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, NULL)
elif isinstance(arg, basestring) and \
definition == 'Ljava/lang/String;':
j_string = j_env[0].NewStringUTF(
j_env, <bytes>arg)
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, j_string)
elif isinstance(arg, JavaClass):
jc = arg
if jc.__javaclass__ != definition[1:-1]:
raise JavaException('Invalid class argument, want '
'{0!r}, got {1!r}'.format(
definition[1:-1],
jc.__javaclass__))
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, jc.j_self)
elif isinstance(arg, JavaObject):
jo = arg
j_env[0].SetObjectArrayElement(
j_env, <jobjectArray>ret, i, jo.obj)
else:
raise JavaException('Invalid variable used for L array')
else:
raise JavaException('Invalid array definition')
return <jobject>ret