550 lines
18 KiB
C
550 lines
18 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Paul Sokolovsky
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <assert.h>
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#include <string.h>
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#include <errno.h>
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#include <dlfcn.h>
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#include <ctype.h>
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#include "py/nlr.h"
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#include "py/runtime0.h"
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#include "py/runtime.h"
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#include "py/binary.h"
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#include <jni.h>
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#define JJ(call, ...) (*env)->call(env, __VA_ARGS__)
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#define JJ1(call) (*env)->call(env)
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static JavaVM *jvm;
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static JNIEnv *env;
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static jclass Class_class;
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static jclass String_class;
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static jmethodID Class_getField_mid;
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static jmethodID Class_getMethods_mid;
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static jmethodID Class_getConstructors_mid;
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static jmethodID Method_getName_mid;
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static jmethodID Method_toString_mid;
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static jclass List_class;
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static jmethodID List_get_mid;
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static jmethodID List_set_mid;
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static jmethodID List_size_mid;
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STATIC const mp_obj_type_t jobject_type;
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STATIC const mp_obj_type_t jmethod_type;
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STATIC mp_obj_t new_jobject(jobject jo);
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STATIC mp_obj_t new_jclass(jclass jc);
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STATIC mp_obj_t call_method(jobject obj, const char *name, jarray methods, bool is_constr, mp_uint_t n_args, const mp_obj_t *args);
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typedef struct _mp_obj_jclass_t {
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mp_obj_base_t base;
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jclass cls;
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} mp_obj_jclass_t;
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typedef struct _mp_obj_jobject_t {
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mp_obj_base_t base;
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jobject obj;
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} mp_obj_jobject_t;
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typedef struct _mp_obj_jmethod_t {
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mp_obj_base_t base;
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jobject obj;
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jmethodID meth;
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qstr name;
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bool is_static;
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} mp_obj_jmethod_t;
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// Utility functions
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STATIC bool is_object_type(const char *jtypesig) {
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while (*jtypesig != ' ' && *jtypesig) {
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if (*jtypesig == '.') {
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return true;
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}
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jtypesig++;
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}
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return false;
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}
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STATIC void check_exception(void) {
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jobject exc = JJ1(ExceptionOccurred);
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if (exc) {
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//JJ1(ExceptionDescribe);
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mp_obj_t py_e = new_jobject(exc);
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JJ1(ExceptionClear);
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nlr_raise(mp_obj_new_exception_arg1(&mp_type_Exception, py_e));
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}
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}
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// jclass
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STATIC void jclass_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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(void)kind;
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mp_obj_jclass_t *self = self_in;
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// Variable value printed as cast to int
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mp_printf(print, "<jclass @%p>", self->cls);
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}
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STATIC void jclass_attr(mp_obj_t self_in, qstr attr_in, mp_obj_t *dest) {
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if (dest[0] == MP_OBJ_NULL) {
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// load attribute
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mp_obj_jclass_t *self = self_in;
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const char *attr = qstr_str(attr_in);
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jstring field_name = JJ(NewStringUTF, attr);
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jobject field = JJ(CallObjectMethod, self->cls, Class_getField_mid, field_name);
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if (!JJ1(ExceptionCheck)) {
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jfieldID field_id = JJ(FromReflectedField, field);
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jobject obj = JJ(GetStaticObjectField, self->cls, field_id);
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dest[0] = new_jobject(obj);
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return;
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}
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//JJ1(ExceptionDescribe);
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JJ1(ExceptionClear);
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mp_obj_jmethod_t *o = m_new_obj(mp_obj_jmethod_t);
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o->base.type = &jmethod_type;
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o->name = attr_in;
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o->meth = NULL;
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o->obj = self->cls;
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o->is_static = true;
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dest[0] = o;
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}
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}
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STATIC mp_obj_t jclass_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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if (n_kw != 0) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "kwargs not supported"));
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}
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mp_obj_jclass_t *self = self_in;
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jarray methods = JJ(CallObjectMethod, self->cls, Class_getConstructors_mid);
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return call_method(self->cls, NULL, methods, true, n_args, args);
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}
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STATIC const mp_map_elem_t jclass_locals_dict_table[] = {
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// { MP_OBJ_NEW_QSTR(MP_QSTR_get), (mp_obj_t)&ffivar_get_obj },
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// { MP_OBJ_NEW_QSTR(MP_QSTR_set), (mp_obj_t)&ffivar_set_obj },
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};
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STATIC MP_DEFINE_CONST_DICT(jclass_locals_dict, jclass_locals_dict_table);
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STATIC const mp_obj_type_t jclass_type = {
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{ &mp_type_type },
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.name = MP_QSTR_jclass,
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.print = jclass_print,
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.attr = jclass_attr,
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.call = jclass_call,
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.locals_dict = (mp_obj_t)&jclass_locals_dict,
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};
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STATIC mp_obj_t new_jclass(jclass jc) {
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mp_obj_jclass_t *o = m_new_obj(mp_obj_jclass_t);
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o->base.type = &jclass_type;
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o->cls = jc;
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return o;
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}
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// jobject
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STATIC void jobject_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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(void)kind;
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mp_obj_jobject_t *self = self_in;
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// Variable value printed as cast to int
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mp_printf(print, "<jobject @%p>", self->obj);
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}
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STATIC void jobject_attr(mp_obj_t self_in, qstr attr_in, mp_obj_t *dest) {
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if (dest[0] == MP_OBJ_NULL) {
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// load attribute
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mp_obj_jobject_t *self = self_in;
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mp_obj_jmethod_t *o = m_new_obj(mp_obj_jmethod_t);
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o->base.type = &jmethod_type;
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o->name = attr_in;
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o->meth = NULL;
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o->obj = self->obj;
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o->is_static = false;
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dest[0] = o;
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}
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}
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STATIC mp_obj_t jobject_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
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mp_obj_jobject_t *self = self_in;
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if (!JJ(IsInstanceOf, self->obj, List_class)) {
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return MP_OBJ_NULL;
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}
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mp_uint_t idx = mp_obj_get_int(index);
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if (value == MP_OBJ_NULL) {
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// delete
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assert(0);
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} else if (value == MP_OBJ_SENTINEL) {
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// load
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jobject el = JJ(CallObjectMethod, self->obj, List_get_mid, idx);
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if (el == NULL) {
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check_exception();
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}
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return new_jobject(el);
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} else {
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// store
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assert(0);
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}
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return MP_OBJ_NULL;
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}
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STATIC mp_obj_t jobject_unary_op(mp_uint_t op, mp_obj_t self_in) {
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mp_obj_jobject_t *self = self_in;
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switch (op) {
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case MP_UNARY_OP_BOOL:
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case MP_UNARY_OP_LEN: {
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jint len = JJ(CallIntMethod, self->obj, List_size_mid);
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if (op == MP_UNARY_OP_BOOL) {
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return MP_BOOL(len != 0);
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}
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return MP_OBJ_NEW_SMALL_INT(len);
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}
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default:
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return MP_OBJ_NULL; // op not supported
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}
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}
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STATIC const mp_obj_type_t jobject_type = {
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{ &mp_type_type },
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.name = MP_QSTR_jobject,
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.print = jobject_print,
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.unary_op = jobject_unary_op,
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.attr = jobject_attr,
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.subscr = jobject_subscr,
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// .locals_dict = (mp_obj_t)&jobject_locals_dict,
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};
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STATIC mp_obj_t new_jobject(jobject jo) {
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if (jo == NULL) {
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return mp_const_none;
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} else if (JJ(IsInstanceOf, jo, String_class)) {
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const char *s = JJ(GetStringUTFChars, jo, NULL);
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mp_obj_t ret = mp_obj_new_str(s, strlen(s), false);
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JJ(ReleaseStringUTFChars, jo, s);
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return ret;
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} else if (JJ(IsInstanceOf, jo, Class_class)) {
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return new_jclass(jo);
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} else {
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mp_obj_jobject_t *o = m_new_obj(mp_obj_jobject_t);
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o->base.type = &jobject_type;
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o->obj = jo;
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return o;
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}
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}
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// jmethod
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STATIC void jmethod_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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(void)kind;
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mp_obj_jmethod_t *self = self_in;
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// Variable value printed as cast to int
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mp_printf(print, "<jmethod '%s'>", qstr_str(self->name));
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}
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#define IMATCH(s, static) ((!strncmp(s, static, sizeof(static) - 1)) && (s += sizeof(static) - 1))
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#define CHECK_TYPE(java_type_name) \
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if (strncmp(arg_type, java_type_name, sizeof(java_type_name) - 1) != 0) { \
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return false; \
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} \
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arg_type += sizeof(java_type_name) - 1;
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STATIC const char *strprev(const char *s, char c) {
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while (*s != c) {
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s--;
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}
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return s;
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}
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STATIC bool py2jvalue(const char **jtypesig, mp_obj_t arg, jvalue *out) {
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const char *arg_type = *jtypesig;
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mp_obj_type_t *type = mp_obj_get_type(arg);
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if (type == &mp_type_str) {
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if (IMATCH(arg_type, "java.lang.String") || IMATCH(arg_type, "java.lang.Object")) {
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out->l = JJ(NewStringUTF, mp_obj_str_get_str(arg));
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} else {
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return false;
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}
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} else if (type == &mp_type_int) {
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if (IMATCH(arg_type, "int") || IMATCH(arg_type, "long")) {
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// TODO: Java long is 64-bit actually
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out->j = mp_obj_get_int(arg);
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} else {
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return false;
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}
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} else if (type == &jobject_type) {
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printf("TODO: Check java arg type!!\n");
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while (isalpha(*arg_type) || *arg_type == '.') {
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arg_type++;
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}
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mp_obj_jobject_t *jo = arg;
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out->l = jo->obj;
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} else {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "arg type not supported"));
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}
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*jtypesig = arg_type;
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return true;
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}
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// jvalue is known to be union of jobject and friends. And yet from C's
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// perspective, it's aggregate object which may require passing via stack
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// instead of registers. Work that around by passing jobject and typecasting
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// it.
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#define MATCH(s, static) (!strncmp(s, static, sizeof(static) - 1))
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STATIC mp_obj_t jvalue2py(const char *jtypesig, jobject arg) {
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if (arg == NULL || MATCH(jtypesig, "void")) {
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return mp_const_none;
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} else if (MATCH(jtypesig, "boolean")) {
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return mp_obj_new_bool((bool)arg);
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} else if (MATCH(jtypesig, "int")) {
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return mp_obj_new_int((mp_int_t)arg);
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} else if (is_object_type(jtypesig)) {
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// Non-primitive, object type
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return new_jobject(arg);
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}
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printf("Unknown return type: %s\n", jtypesig);
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return MP_OBJ_NULL;
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}
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STATIC mp_obj_t call_method(jobject obj, const char *name, jarray methods, bool is_constr, mp_uint_t n_args, const mp_obj_t *args) {
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jvalue jargs[n_args];
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// printf("methods=%p\n", methods);
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jsize num_methods = JJ(GetArrayLength, methods);
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for (int i = 0; i < num_methods; i++) {
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jobject meth = JJ(GetObjectArrayElement, methods, i);
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jobject name_o = JJ(CallObjectMethod, meth, Method_toString_mid);
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const char *decl = JJ(GetStringUTFChars, name_o, NULL);
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const char *arg_types = strchr(decl, '(') + 1;
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//const char *arg_types_end = strchr(arg_types, ')');
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// printf("method[%d]=%p %s\n", i, meth, decl);
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const char *meth_name = NULL;
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const char *ret_type = NULL;
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if (!is_constr) {
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meth_name = strprev(arg_types, '.') + 1;
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ret_type = strprev(meth_name, ' ') - 1;
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ret_type = strprev(ret_type, ' ') + 1;
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int name_len = strlen(name);
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if (strncmp(name, meth_name, name_len/*arg_types - meth_name - 1*/) || meth_name[name_len] != '('/*(*/) {
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goto next_method;
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}
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}
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// printf("method[%d]=%p %s\n", i, meth, decl);
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// printf("!!!%s\n", arg_types);
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// printf("name=%p meth_name=%s\n", name, meth_name);
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bool found = true;
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for (int i = 0; i < n_args && *arg_types != ')'; i++) {
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if (!py2jvalue(&arg_types, args[i], &jargs[i])) {
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goto next_method;
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}
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if (*arg_types == ',') {
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arg_types++;
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}
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}
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if (*arg_types != ')') {
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goto next_method;
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}
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if (found) {
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// printf("found!\n");
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jmethodID method_id = JJ(FromReflectedMethod, meth);
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jobject res;
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mp_obj_t ret;
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if (is_constr) {
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JJ(ReleaseStringUTFChars, name_o, decl);
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res = JJ(NewObjectA, obj, method_id, jargs);
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return new_jobject(res);
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} else {
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if (MATCH(ret_type, "void")) {
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JJ(CallVoidMethodA, obj, method_id, jargs);
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ret = mp_const_none;
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} else if (MATCH(ret_type, "int")) {
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jint res = JJ(CallIntMethodA, obj, method_id, jargs);
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ret = mp_obj_new_int(res);
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} else if (MATCH(ret_type, "boolean")) {
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jboolean res = JJ(CallBooleanMethodA, obj, method_id, jargs);
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ret = mp_obj_new_bool(res);
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} else if (is_object_type(ret_type)) {
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res = JJ(CallObjectMethodA, obj, method_id, jargs);
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ret = new_jobject(res);
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} else {
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JJ(ReleaseStringUTFChars, name_o, decl);
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "cannot handle return type"));
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}
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JJ(ReleaseStringUTFChars, name_o, decl);
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JJ(DeleteLocalRef, name_o);
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JJ(DeleteLocalRef, meth);
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return ret;
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}
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}
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next_method:
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JJ(ReleaseStringUTFChars, name_o, decl);
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JJ(DeleteLocalRef, name_o);
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JJ(DeleteLocalRef, meth);
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}
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "method not found"));
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}
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STATIC mp_obj_t jmethod_call(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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if (n_kw != 0) {
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nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "kwargs not supported"));
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}
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mp_obj_jmethod_t *self = self_in;
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const char *name = qstr_str(self->name);
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// jstring meth_name = JJ(NewStringUTF, name);
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jclass obj_class = self->obj;
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if (!self->is_static) {
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obj_class = JJ(GetObjectClass, self->obj);
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}
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jarray methods = JJ(CallObjectMethod, obj_class, Class_getMethods_mid);
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return call_method(self->obj, name, methods, false, n_args, args);
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}
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STATIC const mp_obj_type_t jmethod_type = {
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{ &mp_type_type },
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.name = MP_QSTR_jmethod,
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.print = jmethod_print,
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.call = jmethod_call,
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// .attr = jobject_attr,
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// .locals_dict = (mp_obj_t)&jobject_locals_dict,
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};
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#ifdef __ANDROID__
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#define LIBJVM_SO "libdvm.so"
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#else
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#define LIBJVM_SO "libjvm.so"
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#endif
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STATIC void create_jvm() {
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JavaVMInitArgs args;
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JavaVMOption options;
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options.optionString = "-Djava.class.path=.";
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args.version = JNI_VERSION_1_6;
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args.nOptions = 1;
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|
args.options = &options;
|
|
args.ignoreUnrecognized = 0;
|
|
|
|
if (env) {
|
|
return;
|
|
}
|
|
|
|
void *libjvm = dlopen(LIBJVM_SO, RTLD_NOW | RTLD_GLOBAL);
|
|
if (!libjvm) {
|
|
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "unable to load libjvm.so, use LD_LIBRARY_PATH"));
|
|
}
|
|
int (*_JNI_CreateJavaVM)(void*, void**, void*) = dlsym(libjvm, "JNI_CreateJavaVM");
|
|
|
|
int st = _JNI_CreateJavaVM(&jvm, (void**)&env, &args);
|
|
if (st < 0 || !env) {
|
|
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError, "unable to create JVM"));
|
|
}
|
|
|
|
Class_class = JJ(FindClass, "java/lang/Class");
|
|
jclass method_class = JJ(FindClass, "java/lang/reflect/Method");
|
|
String_class = JJ(FindClass, "java/lang/String");
|
|
|
|
Class_getField_mid = (*env)->GetMethodID(env, Class_class, "getField",
|
|
"(Ljava/lang/String;)Ljava/lang/reflect/Field;");
|
|
Class_getMethods_mid = (*env)->GetMethodID(env, Class_class, "getMethods",
|
|
"()[Ljava/lang/reflect/Method;");
|
|
Class_getConstructors_mid = (*env)->GetMethodID(env, Class_class, "getConstructors",
|
|
"()[Ljava/lang/reflect/Constructor;");
|
|
Method_getName_mid = (*env)->GetMethodID(env, method_class, "getName",
|
|
"()Ljava/lang/String;");
|
|
Method_toString_mid = (*env)->GetMethodID(env, method_class, "toString",
|
|
"()Ljava/lang/String;");
|
|
|
|
List_class = JJ(FindClass, "java/util/List");
|
|
List_get_mid = JJ(GetMethodID, List_class, "get",
|
|
"(I)Ljava/lang/Object;");
|
|
List_set_mid = JJ(GetMethodID, List_class, "set",
|
|
"(ILjava/lang/Object;)Ljava/lang/Object;");
|
|
List_size_mid = JJ(GetMethodID, List_class, "size",
|
|
"()I");
|
|
}
|
|
|
|
STATIC mp_obj_t mod_jni_cls(mp_obj_t cls_name_in) {
|
|
const char *cls_name = mp_obj_str_get_str(cls_name_in);
|
|
if (!env) {
|
|
create_jvm();
|
|
}
|
|
jclass cls = JJ(FindClass, cls_name);
|
|
|
|
mp_obj_jclass_t *o = m_new_obj(mp_obj_jclass_t);
|
|
o->base.type = &jclass_type;
|
|
o->cls = cls;
|
|
return o;
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_1(mod_jni_cls_obj, mod_jni_cls);
|
|
|
|
STATIC mp_obj_t mod_jni_env() {
|
|
return mp_obj_new_int((mp_int_t)env);
|
|
}
|
|
MP_DEFINE_CONST_FUN_OBJ_0(mod_jni_env_obj, mod_jni_env);
|
|
|
|
STATIC const mp_map_elem_t mp_module_jni_globals_table[] = {
|
|
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_jni) },
|
|
{ MP_OBJ_NEW_QSTR(MP_QSTR_cls), (mp_obj_t)&mod_jni_cls_obj },
|
|
{ MP_OBJ_NEW_QSTR(MP_QSTR_env), (mp_obj_t)&mod_jni_env_obj },
|
|
};
|
|
|
|
STATIC MP_DEFINE_CONST_DICT(mp_module_jni_globals, mp_module_jni_globals_table);
|
|
|
|
const mp_obj_module_t mp_module_jni = {
|
|
.base = { &mp_type_module },
|
|
.name = MP_QSTR_jni,
|
|
.globals = (mp_obj_dict_t*)&mp_module_jni_globals,
|
|
};
|