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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Conversions.h"
#include "JavaBuiltins.h"
#include "mozilla/ipc/GeckoChildProcessHost.h"
namespace mozilla {
namespace jni {
template <class T>
jfieldID GetValueFieldID(JNIEnv* aEnv, const char* aType) {
const jfieldID id = aEnv->GetFieldID(
typename T::Context(aEnv, nullptr).ClassRef(), "value", aType);
aEnv->ExceptionClear();
return id;
}
// Cached locations of the primitive types within their standard boxed objects
// to skip doing that lookup on every get.
static jfieldID gBooleanValueField;
static jfieldID gIntValueField;
static jfieldID gDoubleValueField;
void InitConversionStatics() {
MOZ_ASSERT(NS_IsMainThread());
JNIEnv* const env = jni::GetGeckoThreadEnv();
gBooleanValueField = GetValueFieldID<java::sdk::Boolean>(env, "Z");
gIntValueField = GetValueFieldID<java::sdk::Integer>(env, "I");
gDoubleValueField = GetValueFieldID<java::sdk::Double>(env, "D");
}
template <>
bool Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Boolean>());
bool result = false;
if (gBooleanValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result =
aEnv->GetBooleanField(aData.Get(), gBooleanValueField) != JNI_FALSE;
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Boolean::Ref::From(aData)->BooleanValue();
}
return result;
}
template <>
int Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Integer>());
int result = 0;
if (gIntValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result = aEnv->GetIntField(aData.Get(), gIntValueField);
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Number::Ref::From(aData)->IntValue();
}
return result;
}
template <>
double Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Double>());
double result = 0;
if (gDoubleValueField) {
if (!aEnv) {
aEnv = jni::GetEnvForThread();
}
result = aEnv->GetDoubleField(aData.Get(), gDoubleValueField);
MOZ_CATCH_JNI_EXCEPTION(aEnv);
} else {
result = java::sdk::Number::Ref::From(aData)->DoubleValue();
}
return result;
}
template <>
ipc::LaunchError Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
return ipc::LaunchError{};
}
template <>
nsString Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
nsString result;
if (aData != NULL && aData.IsInstanceOf<jni::String>()) {
result = jni::String::Ref::From(aData)->ToString();
}
return result;
}
template <>
nsresult Java2Native(mozilla::jni::Object::Param aData, JNIEnv* aEnv) {
MOZ_ASSERT(aData.IsInstanceOf<jni::Throwable>());
return NS_ERROR_FAILURE;
}
} // namespace jni
} // namespace mozilla
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