X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/4e2cc9d31bca82d99377b34371535f2ec9ee5c33..17764b01280ac7cd2e14c82581fd8d185a437fef:/Java/Execute.cpp?ds=inline

diff --git a/Java/Execute.cpp b/Java/Execute.cpp
index 688de68..c7ecbb1 100644
--- a/Java/Execute.cpp
+++ b/Java/Execute.cpp
@@ -23,12 +23,19 @@
 #include <sstream>
 #include <vector>
 
-#ifdef __APPLE__
+#include <dlfcn.h>
+
+#if defined(__APPLE__) && !defined(__arm__)
 #include <JavaVM/jni.h>
 #else
 #include <jni.h>
 #endif
 
+#ifdef __ANDROID__
+// XXX: this is deprecated?!?!?!?!?!?!
+#include <sys/system_properties.h>
+#endif
+
 #include "cycript.hpp"
 #include "Error.hpp"
 #include "Execute.hpp"
@@ -70,14 +77,6 @@ _value; })
         return value; \
     }
 
-extern "C" {
-    // Android's jni.h seriously doesn't declare these :/
-    jint JNI_CreateJavaVM(JavaVM **, void **, void *);
-    jint JNI_GetCreatedJavaVMs(JavaVM **, jsize, jsize *);
-}
-
-JNIEnv *GetJNI(JSContextRef context);
-
 #define CYJavaForEachPrimitive \
     CYJavaForEachPrimitive_(Z, z, Boolean, Boolean, boolean) \
     CYJavaForEachPrimitive_(B, b, Byte, Byte, byte) \
@@ -97,6 +96,15 @@ CYJavaForEachPrimitive
 #undef CYJavaForEachPrimitive_
 };
 
+template <typename Type_>
+struct IsJavaPrimitive { static const bool value = false; };
+
+#define CYJavaForEachPrimitive_(T, t, Typ, Type, type) \
+    template <> \
+    struct IsJavaPrimitive<j ## type> { static const bool value = true; };
+CYJavaForEachPrimitive
+#undef CYJavaForEachPrimitive_
+
 // Java References {{{
 template <typename Value_>
 struct CYJavaRef {
@@ -117,6 +125,7 @@ struct CYJavaRef {
         return jni_;
     }
 
+    // XXX: this is only needed to support CYJavaEnv relying on C variadics
     _finline Value_ get() const {
         return value_;
     }
@@ -394,7 +403,7 @@ CYJavaForEachPrimitive
 
 #define CYJavaEnv_(Code) \
     template <typename... Args_> \
-    auto Code(Args_ &&... args) const -> decltype(jni->Code(args...)) { \
+    auto Code(Args_ &&... args) const -> decltype(jni->Code(cy::Forward<Args_>(args)...)) { \
         return _envcall(jni, Code(cy::Forward<Args_>(args)...)); \
     }
 
@@ -414,6 +423,7 @@ CYJavaForEachPrimitive
     CYJavaEnv_(GetMethodID)
     CYJavaEnv_(GetStaticMethodID)
     CYJavaEnv_(IsSameObject)
+    CYJavaEnv_(RegisterNatives)
 #undef CYJavaEnv_
 
 #define CYJavaEnv_(Code) \
@@ -439,20 +449,6 @@ static CYJavaLocal<jstring> CYCastJavaString(const CYJavaRef<jobject> &value) {
     return jni.CallObjectMethod<jstring>(value, Object$toString);
 }
 
-template <typename Internal_, typename Value_>
-struct CYJavaValue :
-    CYPrivate<Internal_>
-{
-    CYJavaGlobal<Value_> value_;
-
-    CYJavaValue(const CYJavaRef<Value_> &value) :
-        value_(value)
-    {
-    }
-
-    CYJavaValue(const CYJavaValue &) = delete;
-};
-
 static JSValueRef CYCastJSValue(JSContextRef context, const CYJavaRef<jobject> &value);
 
 template <typename Other_>
@@ -530,7 +526,7 @@ struct CYJavaSignature {
 typedef std::multiset<CYJavaSignature> CYJavaOverload;
 
 struct CYJavaMethod :
-    CYPrivate<CYJavaMethod>
+    CYRoot
 {
     CYJavaOverload overload_;
 
@@ -541,7 +537,7 @@ struct CYJavaMethod :
 };
 
 struct CYJavaStaticMethod :
-    CYPrivate<CYJavaStaticMethod>
+    CYRoot
 {
     CYJavaOverload overload_;
 
@@ -552,8 +548,9 @@ struct CYJavaStaticMethod :
 };
 
 struct CYJavaClass :
-    CYJavaValue<CYJavaClass, jclass>
+    CYRoot
 {
+    CYJavaGlobal<jclass> value_;
     bool interface_;
 
     CYJavaFieldMap static_;
@@ -561,7 +558,7 @@ struct CYJavaClass :
     CYJavaOverload overload_;
 
     CYJavaClass(const CYJavaRef<jclass> &value, bool interface) :
-        CYJavaValue(value),
+        value_(value),
         interface_(interface)
     {
     }
@@ -570,12 +567,13 @@ struct CYJavaClass :
 static JSObjectRef CYGetJavaClass(JSContextRef context, const CYJavaRef<jclass> &_class);
 
 struct CYJavaObject :
-    CYJavaValue<CYJavaObject, jobject>
+    CYRoot
 {
+    CYJavaGlobal<jobject> value_;
     CYJavaClass *table_;
 
     CYJavaObject(const CYJavaRef<jobject> &value, CYJavaClass *table) :
-        CYJavaValue(value),
+        value_(value),
         table_(table)
     {
     }
@@ -584,36 +582,39 @@ struct CYJavaObject :
 };
 
 struct CYJavaInterior :
-    CYJavaValue<CYJavaInterior, jobject>
+    CYRoot
 {
+    CYJavaGlobal<jobject> value_;
     CYJavaClass *table_;
 
     CYJavaInterior(const CYJavaRef<jobject> &value, CYJavaClass *table) :
-        CYJavaValue(value),
+        value_(value),
         table_(table)
     {
     }
 };
 
 struct CYJavaStaticInterior :
-    CYJavaValue<CYJavaStaticInterior, jclass>
+    CYRoot
 {
+    CYJavaGlobal<jclass> value_;
     CYJavaClass *table_;
 
     CYJavaStaticInterior(const CYJavaRef<jclass> &value, CYJavaClass *table) :
-        CYJavaValue(value),
+        value_(value),
         table_(table)
     {
     }
 };
 
 struct CYJavaArray :
-    CYJavaValue<CYJavaArray, jarray>
+    CYRoot
 {
+    CYJavaGlobal<jarray> value_;
     CYJavaPrimitive primitive_;
 
     CYJavaArray(const CYJavaRef<jarray> &value, CYJavaPrimitive primitive) :
-        CYJavaValue(value),
+        value_(value),
         primitive_(primitive)
     {
     }
@@ -622,12 +623,15 @@ struct CYJavaArray :
 };
 
 struct CYJavaPackage :
-    CYPrivate<CYJavaPackage>
+    CYRoot
 {
+    JNIEnv *jni_;
+
     typedef std::vector<std::string> Path;
     Path package_;
 
-    _finline CYJavaPackage(const Path &package) :
+    _finline CYJavaPackage(JNIEnv *jni, const Path &package) :
+        jni_(jni),
         package_(package)
     {
     }
@@ -657,7 +661,7 @@ static JSValueRef CYCastJSValue(JSContextRef context, const CYJavaRef<jobject> &
         auto Class$getComponentType(jni.GetMethodID(Class$, "getComponentType", "()Ljava/lang/Class;"));
         auto component(jni.CallObjectMethod<jclass>(_class, Class$getComponentType));
         auto Class$getName(jni.GetMethodID(Class$, "getName", "()Ljava/lang/String;"));
-        return CYJavaArray::Make(context, value.cast<jarray>(), CYJavaGetPrimitive(context, component, Class$getName));
+        return CYPrivate<CYJavaArray>::Make(context, value.cast<jarray>(), CYJavaGetPrimitive(context, component, Class$getName));
     }
 
     auto Wrapper$(jni.FindClass("Cycript$Wrapper"));
@@ -668,7 +672,7 @@ static JSValueRef CYCastJSValue(JSContextRef context, const CYJavaRef<jobject> &
     }
 
     CYJavaClass *table(reinterpret_cast<CYJavaClass *>(JSObjectGetPrivate(CYGetJavaClass(context, _class))));
-    return CYJavaObject::Make(context, value, table);
+    return CYPrivate<CYJavaObject>::Make(context, value, table);
 }
 
 static _finline JSObjectRef CYCastJSObject(JSContextRef context, const CYJavaRef<jobject> &value) {
@@ -700,13 +704,13 @@ CYCastJava$(F, Float, jfloat, CYCastDouble)
 CYCastJava$(D, Double, jdouble, CYCastDouble)
 
 static CYJavaClass *CYGetJavaTable(JSContextRef context, JSObjectRef object) {
-    if (!JSValueIsObjectOfClass(context, object, CYJavaClass::Class_))
+    if (!JSValueIsObjectOfClass(context, object, CYPrivate<CYJavaClass>::Class_))
         return NULL;
     return reinterpret_cast<CYJavaClass *>(JSObjectGetPrivate(object));
 }
 
 static CYJavaObject *CYGetJavaObject(JSContextRef context, JSObjectRef object) {
-    if (!JSValueIsObjectOfClass(context, object, CYJavaObject::Class_))
+    if (!JSValueIsObjectOfClass(context, object, CYPrivate<CYJavaObject>::Class_))
         return NULL;
     return reinterpret_cast<CYJavaObject *>(JSObjectGetPrivate(object));
 }
@@ -804,7 +808,7 @@ static JSObjectRef CYGetJavaClass(JSContextRef context, const CYJavaRef<jclass>
         }
     }
 
-    constructor = JSObjectMake(context, CYJavaClass::Class_, table);
+    constructor = JSObjectMake(context, CYPrivate<CYJavaClass>::Class_, table);
 
     prototype = JSObjectMake(context, NULL, NULL);
     CYSetProperty(context, constructor, prototype_s, prototype, kJSPropertyAttributeDontEnum);
@@ -841,9 +845,9 @@ static JSObjectRef CYGetJavaClass(JSContextRef context, const CYJavaRef<jclass>
         CYJSString name(entry.first.second);
         auto &overload(entry.second);
         if (instance)
-            CYSetProperty(context, prototype, name, CYJavaMethod::Make(context, overload), kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete);
+            CYSetProperty(context, prototype, name, CYPrivate<CYJavaMethod>::Make(context, overload), kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete);
         else
-            CYSetProperty(context, constructor, name, CYJavaStaticMethod::Make(context, overload), kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete);
+            CYSetProperty(context, constructor, name, CYPrivate<CYJavaStaticMethod>::Make(context, overload), kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete);
     }
 
     }
@@ -928,8 +932,9 @@ static bool CYCastJavaArguments(const CYJavaFrame &frame, const CYJavaShorty &sh
 }
 
 static JSValueRef JavaMethod_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
-    CYJavaMethod *internal(reinterpret_cast<CYJavaMethod *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaMethod>::Get(context, object));
     CYJavaObject *self(CYGetJavaObject(context, _this));
+    _assert(self != NULL);
     CYJavaEnv jni(self->value_);
 
     CYJavaSignature bound(count);
@@ -958,7 +963,7 @@ CYJavaForEachPrimitive
 } CYCatch(NULL) }
 
 static JSValueRef JavaStaticMethod_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
-    CYJavaMethod *internal(reinterpret_cast<CYJavaMethod *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaStaticMethod>::Get(context, object));
     CYJavaClass *table(CYGetJavaTable(context, _this));
     CYJavaEnv jni(table->value_);
 
@@ -988,16 +993,14 @@ CYJavaForEachPrimitive
 } CYCatch(NULL) }
 
 static JSObjectRef JavaClass_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
-    CYJavaClass *table(reinterpret_cast<CYJavaClass *>(JSObjectGetPrivate(object)));
+    auto table(CYPrivate<CYJavaClass>::Get(context, object));
     CYJavaEnv jni(table->value_);
     jclass _class(table->value_);
 
     if (table->interface_ && count == 1) {
-        JSObjectRef target(CYCastJSObject(context, arguments[0]));
         auto Cycript$(jni.FindClass("Cycript"));
-        auto Cycript$Make(jni.GetStaticMethodID(Cycript$, "proxy", "(Ljava/lang/Class;J)Ljava/lang/Object;"));
-        auto protect(new CYProtect(context, target));
-        return CYCastJSObject(context, jni.CallObjectMethod<jobject>(Cycript$, Cycript$Make, _class, reinterpret_cast<jlong>(protect)));
+        auto Cycript$Make(jni.GetStaticMethodID(Cycript$, "proxy", "(Ljava/lang/Class;LCycript$Wrapper;)Ljava/lang/Object;"));
+        return CYCastJSObject(context, jni.CallObjectMethod<jobject>(Cycript$, Cycript$Make, _class, CYCastJavaObject(jni, context, CYCastJSObject(context, arguments[0])).get()));
     }
 
     CYJavaSignature bound(count);
@@ -1015,7 +1018,7 @@ static JSObjectRef JavaClass_callAsConstructor(JSContextRef context, JSObjectRef
 } CYCatch(NULL) }
 
 static bool JavaStaticInterior_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
-    CYJavaStaticInterior *internal(reinterpret_cast<CYJavaStaticInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaStaticInterior>::Get(context, object));
     CYJavaClass *table(internal->table_);
     CYPool pool;
     auto name(CYPoolUTF8String(pool, context, property));
@@ -1026,7 +1029,7 @@ static bool JavaStaticInterior_hasProperty(JSContextRef context, JSObjectRef obj
 }
 
 static JSValueRef JavaStaticInterior_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaStaticInterior *internal(reinterpret_cast<CYJavaStaticInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaStaticInterior>::Get(context, object));
     CYJavaClass *table(internal->table_);
     CYJavaEnv jni(table->value_);
     CYPool pool;
@@ -1048,7 +1051,7 @@ CYJavaForEachPrimitive
 } CYCatch(NULL) }
 
 static bool JavaStaticInterior_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
-    CYJavaStaticInterior *internal(reinterpret_cast<CYJavaStaticInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaStaticInterior>::Get(context, object));
     CYJavaClass *table(internal->table_);
     CYJavaEnv jni(table->value_);
     CYPool pool;
@@ -1073,19 +1076,19 @@ CYJavaForEachPrimitive
 } CYCatch(false) }
 
 static void JavaStaticInterior_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
-    CYJavaStaticInterior *internal(reinterpret_cast<CYJavaStaticInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaStaticInterior>::Get(context, object));
     CYJavaClass *table(internal->table_);
     for (const auto &field : table->static_)
         JSPropertyNameAccumulatorAddName(names, CYJSString(field.first));
 }
 
 static JSValueRef JavaClass_getProperty_class(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaClass *table(reinterpret_cast<CYJavaClass *>(JSObjectGetPrivate(object)));
+    auto table(CYPrivate<CYJavaClass>::Get(context, object));
     return CYCastJSValue(context, table->value_);
 } CYCatch(NULL) }
 
 static bool JavaInterior_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
-    CYJavaInterior *internal(reinterpret_cast<CYJavaInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaInterior>::Get(context, object));
     CYJavaClass *table(internal->table_);
     CYPool pool;
     auto name(CYPoolUTF8String(pool, context, property));
@@ -1096,7 +1099,7 @@ static bool JavaInterior_hasProperty(JSContextRef context, JSObjectRef object, J
 }
 
 static JSValueRef JavaInterior_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaInterior *internal(reinterpret_cast<CYJavaInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaInterior>::Get(context, object));
     CYJavaEnv jni(internal->value_);
     CYJavaClass *table(internal->table_);
     CYPool pool;
@@ -1118,7 +1121,7 @@ CYJavaForEachPrimitive
 } CYCatch(NULL) }
 
 static bool JavaInterior_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
-    CYJavaInterior *internal(reinterpret_cast<CYJavaInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaInterior>::Get(context, object));
     CYJavaEnv jni(internal->value_);
     CYJavaClass *table(internal->table_);
     CYPool pool;
@@ -1143,30 +1146,30 @@ CYJavaForEachPrimitive
 } CYCatch(false) }
 
 static void JavaInterior_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
-    CYJavaInterior *internal(reinterpret_cast<CYJavaInterior *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaInterior>::Get(context, object));
     CYJavaClass *table(internal->table_);
     for (const auto &field : table->instance_)
         JSPropertyNameAccumulatorAddName(names, CYJSString(field.first));
 }
 
 static JSValueRef JavaObject_getProperty_constructor(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaObject *internal(reinterpret_cast<CYJavaObject *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaObject>::Get(context, object));
     CYJavaEnv jni(internal->value_);
     return CYGetJavaClass(context, jni.GetObjectClass(internal->value_));
 } CYCatch(NULL) }
 
 static JSValueRef JavaClass_getProperty_$cyi(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaClass *internal(reinterpret_cast<CYJavaClass *>(JSObjectGetPrivate(object)));
-    return CYJavaStaticInterior::Make(context, internal->value_, internal);
+    auto internal(CYPrivate<CYJavaClass>::Get(context, object));
+    return CYPrivate<CYJavaStaticInterior>::Make(context, internal->value_, internal);
 } CYCatch(NULL) }
 
 static JSValueRef JavaObject_getProperty_$cyi(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaObject *internal(reinterpret_cast<CYJavaObject *>(JSObjectGetPrivate(object)));
-    return CYJavaInterior::Make(context, internal->value_, internal->table_);
+    auto internal(CYPrivate<CYJavaObject>::Get(context, object));
+    return CYPrivate<CYJavaInterior>::Make(context, internal->value_, internal->table_);
 } CYCatch(NULL) }
 
 static JSValueRef JavaClass_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
-    CYJavaClass *internal(reinterpret_cast<CYJavaClass *>(JSObjectGetPrivate(_this)));
+    auto internal(CYPrivate<CYJavaClass>::Get(context, _this));
     CYJavaEnv jni(internal->value_);
     auto Class$(jni.FindClass("java/lang/Class"));
     auto Class$getCanonicalName(jni.GetMethodID(Class$, "getCanonicalName", "()Ljava/lang/String;"));
@@ -1184,7 +1187,7 @@ static JSValueRef JavaStaticMethod_callAsFunction_toCYON(JSContextRef context, J
 } CYCatch(NULL) }
 
 static JSValueRef JavaArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaArray *internal(reinterpret_cast<CYJavaArray *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaArray>::Get(context, object));
     CYJavaEnv jni(internal->value_);
     if (JSStringIsEqual(property, length_s))
         return CYCastJSValue(context, jni.GetArrayLength(internal->value_));
@@ -1210,7 +1213,7 @@ CYJavaForEachPrimitive
 } CYCatch(NULL) }
 
 static bool JavaArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
-    CYJavaArray *internal(reinterpret_cast<CYJavaArray *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaArray>::Get(context, object));
     CYJavaEnv jni(internal->value_);
 
     CYPool pool;
@@ -1235,8 +1238,10 @@ CYJavaForEachPrimitive
     return true;
 } CYCatch(false) }
 
+static JNIEnv *GetJNI(JSContextRef context, JNIEnv *&env);
+
 static JSValueRef JavaPackage_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
-    CYJavaPackage *internal(reinterpret_cast<CYJavaPackage *>(JSObjectGetPrivate(_this)));
+    auto internal(CYPrivate<CYJavaPackage>::Get(context, _this));
     std::ostringstream name;
     for (auto &package : internal->package_)
         name << package << '.';
@@ -1249,7 +1254,7 @@ static bool CYJavaPackage_hasProperty(JSContextRef context, JSObjectRef object,
 }
 
 static JSValueRef CYJavaPackage_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
-    CYJavaPackage *internal(reinterpret_cast<CYJavaPackage *>(JSObjectGetPrivate(object)));
+    auto internal(CYPrivate<CYJavaPackage>::Get(context, object));
     CYJavaPackage::Path package(internal->package_);
 
     CYPool pool;
@@ -1260,13 +1265,16 @@ static JSValueRef CYJavaPackage_getProperty(JSContextRef context, JSObjectRef ob
         name << package << '/';
     name << next;
 
-    JNIEnv *jni(GetJNI(context));
+    if (internal->jni_ == NULL)
+        GetJNI(context, internal->jni_);
+    JNIEnv *jni(internal->jni_);
+
     if (auto _class = jni->FindClass(name.str().c_str()))
         return CYGetJavaClass(context, CYJavaLocal<jclass>(jni, _class));
     jni->ExceptionClear();
 
     package.push_back(next);
-    return CYJavaPackage::Make(context, package);
+    return CYPrivate<CYJavaPackage>::Make(context, jni, package);
 } CYCatch(NULL) }
 
 static void Cycript_delete(JNIEnv *env, jclass api, jlong jprotect) { CYJavaTry {
@@ -1291,47 +1299,188 @@ static JNINativeMethod Cycript_[] = {
     {(char *) "handle", (char *) "(JLjava/lang/String;[Ljava/lang/Object;)Ljava/lang/Object;", (void *) &Cycript_handle},
 };
 
-JNIEnv *GetJNI(JSContextRef context) {
-    static JavaVM *jvm(NULL);
-    static JNIEnv *jni(NULL);
+template <typename Type_>
+static _finline void dlset(Type_ &function, const char *name, void *handle) {
+    function = reinterpret_cast<Type_>(dlsym(handle, name));
+}
 
-    if (jni != NULL)
-        return jni;
-    jint version(JNI_VERSION_1_4);
+jint CYJavaVersion(JNI_VERSION_1_4);
 
+static JavaVM *CYGetJavaVM(jint (*$JNI_GetCreatedJavaVMs)(JavaVM **, jsize, jsize *)) {
     jsize capacity(16);
     JavaVM *jvms[capacity];
     jsize size;
-    _jnicall(JNI_GetCreatedJavaVMs(jvms, capacity, &size));
+    _jnicall($JNI_GetCreatedJavaVMs(jvms, capacity, &size));
+    if (size == 0)
+        return NULL;
+    return jvms[0];
+}
+
+static JavaVM *CYGetJavaVM(JSContextRef context) {
+    CYPool pool;
+    void *handle(RTLD_DEFAULT);
+    std::string library;
+
+    jint (*$JNI_GetCreatedJavaVMs)(JavaVM **jvms, jsize capacity, jsize *size);
+    dlset($JNI_GetCreatedJavaVMs, "JNI_GetCreatedJavaVMs", handle);
 
-    if (size != 0) {
-        jvm = jvms[0];
-        _jnicall(jvm->GetEnv(reinterpret_cast<void **>(&jni), version));
+    if ($JNI_GetCreatedJavaVMs != NULL) {
+        if (JavaVM *jvm = CYGetJavaVM($JNI_GetCreatedJavaVMs))
+            return jvm;
     } else {
-        CYPool pool;
-        std::vector<JavaVMOption> options;
-
-        {
-            std::ostringstream option;
-            option << "-Djava.class.path=";
-            option << CYPoolLibraryPath(pool) << "/libcycript.jar";
-            if (const char *classpath = getenv("CLASSPATH"))
-                option << ':' << classpath;
-            options.push_back(JavaVMOption{pool.strdup(option.str().c_str()), NULL});
+        std::vector<const char *> guesses;
+
+#ifdef __ANDROID__
+        char android[PROP_VALUE_MAX];
+        if (__system_property_get("persist.sys.dalvik.vm.lib", android) != 0)
+            guesses.push_back(android);
+#endif
+
+        guesses.push_back("/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/jli/libjli.dylib");
+        //guesses.push_back("/System/Library/Frameworks/JavaVM.framework/JavaVM");
+        guesses.push_back("libjvm.dylib");
+
+        guesses.push_back("libart.so");
+        guesses.push_back("libdvm.so");
+        guesses.push_back("libjvm.so");
+
+        for (const char *guess : guesses) {
+            handle = dlopen(guess, RTLD_LAZY | RTLD_GLOBAL);
+            if (handle != NULL) {
+                library = guess;
+                break;
+            }
         }
 
-        JavaVMInitArgs args;
-        memset(&args, 0, sizeof(args));
-        args.version = version;
-        args.nOptions = options.size();
-        args.options = options.data();
-        _jnicall(JNI_CreateJavaVM(&jvm, reinterpret_cast<void **>(&jni), &args));
+        if (library.size() == 0)
+            return NULL;
+
+        dlset($JNI_GetCreatedJavaVMs, "JNI_GetCreatedJavaVMs", handle);
+        if (JavaVM *jvm = CYGetJavaVM($JNI_GetCreatedJavaVMs))
+            return jvm;
     }
 
-    auto Cycript$(CYJavaEnv(jni).FindClass("Cycript"));
-    _envcall(jni, RegisterNatives(Cycript$, Cycript_, sizeof(Cycript_) / sizeof(Cycript_[0])));
+    std::vector<JavaVMOption> options;
+
+    {
+        std::ostringstream option;
+        option << "-Djava.class.path=";
+        option << CYPoolLibraryPath(pool) << "/libcycript.jar";
+        if (const char *classpath = getenv("CLASSPATH"))
+            option << ':' << classpath;
+        options.push_back(JavaVMOption{pool.strdup(option.str().c_str()), NULL});
+    }
+
+    // To use libnativehelper to access JNI_GetCreatedJavaVMs, you need JniInvocation.
+    // ...but there can only be one JniInvocation, and assuradely the other VM has it.
+    // Essentially, this API makes no sense. We need it for AndroidRuntime, though :/.
+
+    if (void *libnativehelper = dlopen("libnativehelper.so", RTLD_LAZY | RTLD_GLOBAL)) {
+        class JniInvocation$;
+        JniInvocation$ *(*JniInvocation$$init$)(JniInvocation$ *self)(NULL);
+        bool (*JniInvocation$Init)(JniInvocation$ *self, const char *library)(NULL);
+        JniInvocation$ *(*JniInvocation$finalize)(JniInvocation$ *self)(NULL);
+
+        dlset(JniInvocation$$init$, "_ZN13JniInvocationC1Ev", libnativehelper);
+        dlset(JniInvocation$Init, "_ZN13JniInvocation4InitEPKc", libnativehelper);
+        dlset(JniInvocation$finalize, "_ZN13JniInvocationD1Ev", libnativehelper);
+
+        if (JniInvocation$$init$ == NULL)
+            dlclose(libnativehelper);
+        else {
+            // XXX: we should attach a pool to the VM itself and deallocate this there
+            //auto invocation(pool.calloc<JniInvocation$>(1, 1024));
+            //_assert(JniInvocation$finalize != NULL);
+            //pool.atexit(reinterpret_cast<void (*)(void *)>(JniInvocation$finalize), invocation);
+
+            auto invocation(static_cast<JniInvocation$ *>(calloc(1, 1024)));
+            JniInvocation$$init$(invocation);
+
+            _assert(JniInvocation$Init != NULL);
+            JniInvocation$Init(invocation, NULL);
+
+            dlset($JNI_GetCreatedJavaVMs, "JNI_GetCreatedJavaVMs", libnativehelper);
+            if (JavaVM *jvm = CYGetJavaVM($JNI_GetCreatedJavaVMs))
+                return jvm;
+        }
+    }
+
+    JavaVM *jvm;
+    JNIEnv *env;
+
+    if (void *libandroid_runtime = dlopen("libandroid_runtime.so", RTLD_LAZY | RTLD_GLOBAL)) {
+        class AndroidRuntime$;
+        AndroidRuntime$ *(*AndroidRuntime$$init$)(AndroidRuntime$ *self, char *args, unsigned int size)(NULL);
+        int (*AndroidRuntime$startVm)(AndroidRuntime$ *self, JavaVM **jvm, JNIEnv **env)(NULL);
+        int (*AndroidRuntime$startReg)(JNIEnv *env)(NULL);
+        int (*AndroidRuntime$addOption)(AndroidRuntime$ *self, const char *option, void *extra)(NULL);
+        int (*AndroidRuntime$addVmArguments)(AndroidRuntime$ *self, int, const char *const argv[])(NULL);
+        AndroidRuntime$ *(*AndroidRuntime$finalize)(AndroidRuntime$ *self)(NULL);
+
+        dlset(AndroidRuntime$$init$, "_ZN7android14AndroidRuntimeC1EPcj", libandroid_runtime);
+        dlset(AndroidRuntime$startVm, "_ZN7android14AndroidRuntime7startVmEPP7_JavaVMPP7_JNIEnv", libandroid_runtime);
+        dlset(AndroidRuntime$startReg, "_ZN7android14AndroidRuntime8startRegEP7_JNIEnv", libandroid_runtime);
+        dlset(AndroidRuntime$addOption, "_ZN7android14AndroidRuntime9addOptionEPKcPv", libandroid_runtime);
+        dlset(AndroidRuntime$addVmArguments, "_ZN7android14AndroidRuntime14addVmArgumentsEiPKPKc", libandroid_runtime);
+        dlset(AndroidRuntime$finalize, "_ZN7android14AndroidRuntimeD1Ev", libandroid_runtime);
+
+        // XXX: it would also be interesting to attach this to a global pool
+        AndroidRuntime$ *runtime(pool.calloc<AndroidRuntime$>(1, 1024));
 
-    return jni;
+        _assert(AndroidRuntime$$init$ != NULL);
+        AndroidRuntime$$init$(runtime, NULL, 0);
+
+        if (AndroidRuntime$addOption == NULL) {
+            _assert(AndroidRuntime$addVmArguments != NULL);
+            std::vector<const char *> arguments;
+            for (const auto &option : options)
+                arguments.push_back(option.optionString);
+            AndroidRuntime$addVmArguments(runtime, arguments.size(), arguments.data());
+        } else for (const auto &option : options)
+            AndroidRuntime$addOption(runtime, option.optionString, option.extraInfo);
+
+        int failure;
+
+        _assert(AndroidRuntime$startVm != NULL);
+        failure = AndroidRuntime$startVm(runtime, &jvm, &env);
+        _assert(failure == 0);
+
+        _assert(AndroidRuntime$startReg != NULL);
+        failure = AndroidRuntime$startReg(env);
+        _assert(failure == 0);
+
+        return jvm;
+    }
+
+    jint (*$JNI_CreateJavaVM)(JavaVM **jvm, void **, void *);
+    dlset($JNI_CreateJavaVM, "JNI_CreateJavaVM", handle);
+
+    JavaVMInitArgs args;
+    memset(&args, 0, sizeof(args));
+    args.version = CYJavaVersion;
+    args.nOptions = options.size();
+    args.options = options.data();
+    _jnicall($JNI_CreateJavaVM(&jvm, reinterpret_cast<void **>(&env), &args));
+    return jvm;
+}
+
+static JNIEnv *GetJNI(JSContextRef context, JNIEnv *&env) {
+    auto jvm(CYGetJavaVM(context));
+    _assert(jvm != NULL);
+    _jnicall(jvm->GetEnv(reinterpret_cast<void **>(&env), CYJavaVersion));
+    CYJavaEnv jni(env);
+
+    // XXX: this happens once per stub :/
+
+    auto Cycript$(jni.FindClass("Cycript"));
+    jni.RegisterNatives(Cycript$, Cycript_, sizeof(Cycript_) / sizeof(Cycript_[0]));
+
+    JSObjectRef java(CYGetCachedObject(context, CYJSString("Java")));
+    JSValueRef arguments[1];
+    arguments[0] = CYCastJSValue(context, CYJSString("setup"));
+    CYCallAsFunction(context, CYCastJSObject(context, CYGetProperty(context, java, CYJSString("emit"))), java, 1, arguments);
+
+    return env;
 }
 
 static JSStaticValue JavaClass_staticValues[3] = {
@@ -1381,7 +1530,7 @@ CYJavaForEachPrimitive
     definition.staticFunctions = JavaClass_staticFunctions;
     definition.callAsConstructor = &JavaClass_callAsConstructor;
     definition.finalize = &CYFinalize;
-    CYJavaClass::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaClass>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.attributes = kJSClassAttributeNoAutomaticPrototype;
@@ -1391,35 +1540,35 @@ CYJavaForEachPrimitive
     definition.setProperty = &JavaInterior_setProperty;
     definition.getPropertyNames = &JavaInterior_getPropertyNames;
     definition.finalize = &CYFinalize;
-    CYJavaInterior::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaInterior>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.className = "JavaMethod";
     definition.staticFunctions = JavaMethod_staticFunctions;
     definition.callAsFunction = &JavaMethod_callAsFunction;
     definition.finalize = &CYFinalize;
-    CYJavaMethod::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaMethod>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.className = "JavaStaticMethod";
     definition.staticFunctions = JavaStaticMethod_staticFunctions;
     definition.callAsFunction = &JavaStaticMethod_callAsFunction;
     definition.finalize = &CYFinalize;
-    CYJavaStaticMethod::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaStaticMethod>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.attributes = kJSClassAttributeNoAutomaticPrototype;
     definition.className = "JavaObject";
     definition.staticValues = JavaObject_staticValues;
     definition.finalize = &CYFinalize;
-    CYJavaObject::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaObject>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.className = "JavaArray";
     definition.getProperty = &JavaArray_getProperty;
     definition.setProperty = &JavaArray_setProperty;
     definition.finalize = &CYFinalize;
-    CYJavaArray::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaArray>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.className = "JavaPackage";
@@ -1427,7 +1576,7 @@ CYJavaForEachPrimitive
     definition.hasProperty = &CYJavaPackage_hasProperty;
     definition.getProperty = &CYJavaPackage_getProperty;
     definition.finalize = &CYFinalize;
-    CYJavaPackage::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaPackage>::Class_ = JSClassCreate(&definition);
 
     definition = kJSClassDefinitionEmpty;
     definition.attributes = kJSClassAttributeNoAutomaticPrototype;
@@ -1437,25 +1586,26 @@ CYJavaForEachPrimitive
     definition.setProperty = &JavaStaticInterior_setProperty;
     definition.getPropertyNames = &JavaStaticInterior_getPropertyNames;
     definition.finalize = &CYFinalize;
-    CYJavaStaticInterior::Class_ = JSClassCreate(&definition);
+    CYPrivate<CYJavaStaticInterior>::Class_ = JSClassCreate(&definition);
 }
 
 void CYJava_SetupContext(JSContextRef context) {
     JSObjectRef global(CYGetGlobalObject(context));
-    //JSObjectRef cy(CYCastJSObject(context, CYGetProperty(context, global, cy_s)));
+    JSObjectRef cy(CYCastJSObject(context, CYGetProperty(context, global, cy_s)));
     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
     JSObjectRef all(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("all"))));
     //JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
 
     JSObjectRef Java(JSObjectMake(context, NULL, NULL));
     CYSetProperty(context, cycript, CYJSString("Java"), Java);
+    CYSetProperty(context, cy, CYJSString("Java"), Java);
 
-    JSObjectRef Packages(CYJavaPackage::Make(context, CYJavaPackage::Path()));
-    CYSetProperty(context, all, CYJSString("Packages"), Packages);
+    JSObjectRef Packages(CYPrivate<CYJavaPackage>::Make(context, nullptr, CYJavaPackage::Path()));
+    CYSetProperty(context, all, CYJSString("Packages"), Packages, kJSPropertyAttributeDontEnum);
 
     for (auto name : (const char *[]) {"java", "javax", "android", "com", "net", "org"}) {
         CYJSString js(name);
-        CYSetProperty(context, all, js, CYGetProperty(context, Packages, js));
+        CYSetProperty(context, all, js, CYPrivate<CYJavaPackage>::Make(context, nullptr, CYJavaPackage::Path(1, name)), kJSPropertyAttributeDontEnum);
     }
 }