mirror of https://github.com/kivy/pyjnius.git
439 lines
15 KiB
Cython
439 lines
15 KiB
Cython
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cdef convert_jobject_to_python(JNIEnv *j_env, bytes definition, jobject j_object):
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# Convert a Java Object to a Python object, according to the definition.
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# If the definition is a java/lang/Object, then try to determine what is it
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# exactly.
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cdef char *c_str
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cdef bytes py_str
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cdef bytes r = definition[1:-1]
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cdef JavaObject ret_jobject
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cdef JavaClass ret_jc
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# we got a generic object -> lookup for the real name instead.
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if r == 'java/lang/Object':
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r = lookup_java_object_name(j_env, j_object)
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# if we got a string, just convert back to Python str.
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if r == 'java/lang/String':
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c_str = <char *>j_env[0].GetStringUTFChars(j_env, j_object, NULL)
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py_str = <bytes>c_str
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j_env[0].ReleaseStringUTFChars(j_env, j_object, c_str)
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return py_str
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if r not in jclass_register:
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from reflect import autoclass
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ret_jc = autoclass(r.replace('/', '.'))(noinstance=True)
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else:
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ret_jc = jclass_register[r](noinstance=True)
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ret_jc.instanciate_from(create_local_ref(j_env, j_object))
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return ret_jc
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cdef convert_jarray_to_python(JNIEnv *j_env, definition, jobject j_object):
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cdef jboolean iscopy
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cdef jboolean *j_booleans
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cdef jbyte *j_bytes
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cdef jchar *j_chars
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cdef jshort *j_shorts
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cdef jint *j_ints
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cdef jlong *j_longs
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cdef jfloat *j_floats
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cdef jdouble *j_doubles
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cdef object ret = None
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cdef jsize array_size
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cdef int i
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cdef jobject j_object_item
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cdef char *c_str
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cdef bytes py_str
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cdef JavaObject ret_jobject
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cdef JavaClass ret_jc
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if j_object == NULL:
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return None
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array_size = j_env[0].GetArrayLength(j_env, j_object)
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r = definition[0]
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if r == 'Z':
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j_booleans = j_env[0].GetBooleanArrayElements(
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j_env, j_object, &iscopy)
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ret = [(True if j_booleans[i] else False)
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for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseBooleanArrayElements(
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j_env, j_object, j_booleans, 0)
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elif r == 'B':
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j_bytes = j_env[0].GetByteArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<char>j_bytes[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseByteArrayElements(
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j_env, j_object, j_bytes, 0)
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elif r == 'C':
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j_chars = j_env[0].GetCharArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<char>j_chars[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseCharArrayElements(
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j_env, j_object, j_chars, 0)
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elif r == 'S':
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j_shorts = j_env[0].GetShortArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<short>j_shorts[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseShortArrayElements(
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j_env, j_object, j_shorts, 0)
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elif r == 'I':
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j_ints = j_env[0].GetIntArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<int>j_ints[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseIntArrayElements(
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j_env, j_object, j_ints, 0)
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elif r == 'J':
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j_longs = j_env[0].GetLongArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<long>j_longs[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseLongArrayElements(
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j_env, j_object, j_longs, 0)
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elif r == 'F':
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j_floats = j_env[0].GetFloatArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<float>j_floats[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseFloatArrayElements(
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j_env, j_object, j_floats, 0)
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elif r == 'D':
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j_doubles = j_env[0].GetDoubleArrayElements(
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j_env, j_object, &iscopy)
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ret = [(<double>j_doubles[i]) for i in range(array_size)]
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if iscopy:
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j_env[0].ReleaseDoubleArrayElements(
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j_env, j_object, j_doubles, 0)
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elif r == 'L':
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r = definition[1:-1]
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ret = []
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for i in range(array_size):
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j_object_item = j_env[0].GetObjectArrayElement(
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j_env, j_object, i)
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if j_object_item == NULL:
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ret.append(None)
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continue
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obj = convert_jobject_to_python(j_env, definition, j_object_item)
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ret.append(obj)
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j_env[0].DeleteLocalRef(j_env, j_object_item)
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else:
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raise JavaException('Invalid return definition for array')
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return ret
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cdef void release_args(JNIEnv *j_env, list definition_args, jvalue *j_args, args) except *:
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# do the conversion from a Python object to Java from a Java definition
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cdef JavaObject jo
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cdef JavaClass jc
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cdef int index
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for index, argtype in enumerate(definition_args):
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py_arg = args[index]
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if argtype[0] == 'L':
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if py_arg is None:
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j_args[index].l = NULL
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if isinstance(py_arg, basestring) and \
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argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
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j_env[0].DeleteLocalRef(j_env, j_args[index].l)
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elif argtype[0] == '[':
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j_env[0].DeleteLocalRef(j_env, j_args[index].l)
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cdef void populate_args(JNIEnv *j_env, list definition_args, jvalue *j_args, args) except *:
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# do the conversion from a Python object to Java from a Java definition
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cdef JavaObject jo
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cdef JavaClass jc
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cdef int index
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for index, argtype in enumerate(definition_args):
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py_arg = args[index]
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if argtype == 'Z':
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j_args[index].z = py_arg
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elif argtype == 'B':
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j_args[index].b = py_arg
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elif argtype == 'C':
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j_args[index].c = ord(py_arg)
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elif argtype == 'S':
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j_args[index].s = py_arg
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elif argtype == 'I':
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j_args[index].i = py_arg
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elif argtype == 'J':
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j_args[index].j = py_arg
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elif argtype == 'F':
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j_args[index].f = py_arg
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elif argtype == 'D':
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j_args[index].d = py_arg
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elif argtype[0] == 'L':
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if py_arg is None:
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j_args[index].l = NULL
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elif isinstance(py_arg, basestring) and \
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argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
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j_args[index].l = j_env[0].NewStringUTF(
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j_env, <char *><bytes>py_arg)
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elif isinstance(py_arg, JavaClass):
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jc = py_arg
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if argtype != 'Ljava/lang/Object;' and jc.__javaclass__ != argtype[1:-1]:
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raise JavaException('Invalid class argument, want '
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'{0!r}, got {1!r}'.format(
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argtype[1:-1], jc.__javaclass__))
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j_args[index].l = jc.j_self.obj
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elif isinstance(py_arg, JavaObject):
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jo = py_arg
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j_args[index].l = jo.obj
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raise JavaException('JavaObject needed for argument '
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'{0}'.format(index))
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else:
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raise JavaException('Invalid python object for this '
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'argument. Want {0!r}, got {1!r}'.format(
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argtype[1:-1], py_arg))
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elif argtype[0] == '[':
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if not isinstance(py_arg, list) and \
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not isinstance(py_arg, tuple):
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raise JavaException('Expecting a python list/tuple, got '
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'{0!r}'.format(py_arg))
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j_args[index].l = convert_pyarray_to_java(
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j_env, argtype[1:], py_arg)
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cdef jobject convert_pyarray_to_java(JNIEnv *j_env, definition, pyarray) except *:
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cdef jobject ret = NULL
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cdef int array_size = len(pyarray)
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cdef int i
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cdef jboolean j_boolean
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cdef jbyte j_byte
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cdef jchar j_char
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cdef jshort j_short
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cdef jint j_int
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cdef jlong j_long
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cdef jfloat j_float
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cdef jdouble j_double
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cdef jstring j_string
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cdef jclass j_class
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cdef JavaObject jo
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cdef JavaClass jc
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if definition == 'Z':
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ret = j_env[0].NewBooleanArray(j_env, array_size)
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for i in range(array_size):
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j_boolean = 1 if pyarray[i] else 0
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j_env[0].SetBooleanArrayRegion(j_env,
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ret, i, 1, &j_boolean)
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elif definition == 'B':
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ret = j_env[0].NewByteArray(j_env, array_size)
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for i in range(array_size):
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j_byte = pyarray[i]
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j_env[0].SetByteArrayRegion(j_env,
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ret, i, 1, &j_byte)
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elif definition == 'C':
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ret = j_env[0].NewCharArray(j_env, array_size)
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for i in range(array_size):
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j_char = ord(pyarray[i])
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j_env[0].SetCharArrayRegion(j_env,
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ret, i, 1, &j_char)
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elif definition == 'S':
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ret = j_env[0].NewShortArray(j_env, array_size)
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for i in range(array_size):
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j_short = pyarray[i]
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j_env[0].SetShortArrayRegion(j_env,
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ret, i, 1, &j_short)
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elif definition == 'I':
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ret = j_env[0].NewIntArray(j_env, array_size)
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for i in range(array_size):
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j_int = pyarray[i]
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j_env[0].SetIntArrayRegion(j_env,
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ret, i, 1, <const_jint *>&j_int)
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elif definition == 'J':
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ret = j_env[0].NewLongArray(j_env, array_size)
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for i in range(array_size):
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j_long = pyarray[i]
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j_env[0].SetLongArrayRegion(j_env,
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ret, i, 1, &j_long)
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elif definition == 'F':
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ret = j_env[0].NewFloatArray(j_env, array_size)
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for i in range(array_size):
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j_float = pyarray[i]
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j_env[0].SetFloatArrayRegion(j_env,
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ret, i, 1, &j_float)
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elif definition == 'D':
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ret = j_env[0].NewDoubleArray(j_env, array_size)
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for i in range(array_size):
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j_double = pyarray[i]
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j_env[0].SetDoubleArrayRegion(j_env,
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ret, i, 1, &j_double)
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elif definition[0] == 'L':
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j_class = j_env[0].FindClass(
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j_env, <bytes>definition[1:-1])
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if j_class == NULL:
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raise JavaException('Cannot create array with a class not '
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'found {0!r}'.format(definition[1:-1]))
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ret = j_env[0].NewObjectArray(
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j_env, array_size, j_class, NULL)
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for i in range(array_size):
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arg = pyarray[i]
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if arg is None:
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j_env[0].SetObjectArrayElement(
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j_env, <jobjectArray>ret, i, NULL)
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elif isinstance(arg, basestring) and \
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definition == 'Ljava/lang/String;':
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j_string = j_env[0].NewStringUTF(
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j_env, <bytes>arg)
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j_env[0].SetObjectArrayElement(
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j_env, <jobjectArray>ret, i, j_string)
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elif isinstance(arg, JavaClass):
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jc = arg
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if jc.__javaclass__ != definition[1:-1]:
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raise JavaException('Invalid class argument, want '
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'{0!r}, got {1!r}'.format(
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definition[1:-1],
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jc.__javaclass__))
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j_env[0].SetObjectArrayElement(
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j_env, <jobjectArray>ret, i, jc.j_self.obj)
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elif isinstance(arg, JavaObject):
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jo = arg
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j_env[0].SetObjectArrayElement(
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j_env, <jobjectArray>ret, i, jo.obj)
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else:
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raise JavaException('Invalid variable used for L array')
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else:
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raise JavaException('Invalid array definition')
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return <jobject>ret
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cdef int calculate_score(sign_args, args) except *:
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cdef int index
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cdef int score = 0
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cdef bytes r
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cdef JavaClass jc
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if len(args) != len(sign_args):
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return -1
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score += 10
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for index in range(len(sign_args)):
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r = sign_args[index]
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arg = args[index]
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if r == 'Z':
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if not isinstance(arg, bool):
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return -1
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score += 10
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continue
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if r == 'B':
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if not isinstance(arg, int):
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return -1
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score += 10
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continue
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if r == 'C':
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if not isinstance(arg, str) or len(arg) != 1:
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return -1
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score += 10
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continue
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if r == 'S' or r == 'I' or r == 'J':
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if isinstance(arg, int):
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score += 10
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continue
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elif isinstance(arg, float):
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score += 5
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continue
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else:
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return -1
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if r == 'F' or r == 'D':
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if isinstance(arg, int):
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score += 5
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continue
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elif isinstance(arg, float):
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score += 10
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continue
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else:
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return -1
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if r[0] == 'L':
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r = r[1:-1]
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if arg is None:
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score += 10
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continue
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# if it's a string, accept any python string
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if r == 'java/lang/String' and isinstance(arg, basestring):
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score += 10
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continue
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# if it's a generic object, accept python string, or any java
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# class/object
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if r == 'java/lang/Object':
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if isinstance(arg, JavaClass) or isinstance(arg, JavaObject):
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score += 10
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continue
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elif isinstance(arg, basestring):
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score += 5
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continue
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return -1
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# if we pass a JavaClass, ensure the definition is matching
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# XXX FIXME what if we use a subclass or something ?
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if isinstance(arg, JavaClass):
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jc = arg
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if jc.__javaclass__ == r:
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score += 10
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else:
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# can be dangerous
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score += 1
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continue
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# always accept unknow object, but can be dangerous too.
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if isinstance(arg, JavaObject):
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score += 1
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continue
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# native type? not accepted
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return -1
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if r[0] == '[':
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if arg is None:
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return 10
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if not isinstance(arg, tuple) and not isinstance(arg, list):
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return -1
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# calculate the score for our subarray
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subscore = calculate_score([r[1:]] * len(arg), arg)
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if subscore == -1:
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return -1
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# look like the array is matching, accept it.
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score += 10
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continue
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return score
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