diff options
Diffstat (limited to 'widget/android/jni/Conversions.cpp')
-rw-r--r-- | widget/android/jni/Conversions.cpp | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/widget/android/jni/Conversions.cpp b/widget/android/jni/Conversions.cpp new file mode 100644 index 0000000000..f7742b9535 --- /dev/null +++ b/widget/android/jni/Conversions.cpp @@ -0,0 +1,115 @@ +/* -*- 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) { + // Bug 1819311: there is not much we can really catch due to how Android + // services are started, so for now we just expose it this way. + return ipc::LaunchError("Java2Native"); +} + +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 |