diff options
Diffstat (limited to 'bridges/source/jni_uno/jni_base.h')
| -rw-r--r-- | bridges/source/jni_uno/jni_base.h | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/bridges/source/jni_uno/jni_base.h b/bridges/source/jni_uno/jni_base.h new file mode 100644 index 000000000000..cc23cd1b2a8f --- /dev/null +++ b/bridges/source/jni_uno/jni_base.h @@ -0,0 +1,295 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#if ! defined INCLUDED_JNI_BASE_H +#define INCLUDED_JNI_BASE_H + +#if defined (__SUNPRO_CC) || defined (__SUNPRO_C) +// workaround solaris include trouble on jumbo +#include <stdarg.h> +namespace std +{ +typedef __va_list va_list; +} +#endif +#include <memory> + +#include "jvmaccess/unovirtualmachine.hxx" +#include "jvmaccess/virtualmachine.hxx" + +#include "osl/diagnose.h" + +#include "rtl/alloc.h" +#include "rtl/ustring.hxx" + +#include "uno/environment.h" +#include "typelib/typedescription.h" + +#define OUSTR(x) ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(x) ) + + +namespace jni_uno +{ + +class JNI_info; + +//============================================================================== +struct BridgeRuntimeError +{ + ::rtl::OUString m_message; + + inline BridgeRuntimeError( ::rtl::OUString const & message ) + : m_message( message ) + {} +}; + + +//============================================================================== +class JNI_context +{ + JNI_info const * m_jni_info; + JNIEnv * m_env; + jobject m_class_loader; + + JNI_context( JNI_context & ); // not impl + void operator = ( JNI_context ); // not impl + + void java_exc_occurred() const; +public: + inline explicit JNI_context( + JNI_info const * jni_info, JNIEnv * env, jobject class_loader ) + : m_jni_info( jni_info ), + m_env( env ), + m_class_loader( class_loader ) + {} + + inline JNI_info const * get_info() const + { return m_jni_info; } + + inline JNIEnv * operator -> () const + { return m_env; } + inline JNIEnv * get_jni_env() const + { return m_env; } + + // does not handle exceptions, *classClass will be null if exception + // occurred: + void getClassForName(jclass * classClass, jmethodID * methodForName) const; + + // if inException, does not handle exceptions, in which case returned value + // will be null if exception occurred: + jclass findClass( + char const * name, jclass classClass, jmethodID methodForName, + bool inException) const; + + inline void ensure_no_exception() const; // throws BridgeRuntimeError + inline bool assert_no_exception() const; // asserts and clears exception + + ::rtl::OUString get_stack_trace( jobject jo_exc = 0 ) const; +}; + +//______________________________________________________________________________ +inline void JNI_context::ensure_no_exception() const +{ + if (JNI_FALSE != m_env->ExceptionCheck()) + { + java_exc_occurred(); + } +} + +//______________________________________________________________________________ +inline bool JNI_context::assert_no_exception() const +{ + if (JNI_FALSE != m_env->ExceptionCheck()) + { + m_env->ExceptionClear(); + OSL_FAIL( "unexpected java exception occurred!" ); + return false; + } + return true; +} + + +//============================================================================== +class JNI_guarded_context + : private ::jvmaccess::VirtualMachine::AttachGuard, + public JNI_context +{ + JNI_guarded_context( JNI_guarded_context & ); // not impl + void operator = ( JNI_guarded_context ); // not impl + +public: + inline explicit JNI_guarded_context( + JNI_info const * jni_info, ::jvmaccess::UnoVirtualMachine * vm_access ) + : AttachGuard( vm_access->getVirtualMachine() ), + JNI_context( + jni_info, AttachGuard::getEnvironment(), + static_cast< jobject >(vm_access->getClassLoader()) ) + {} +}; + + +//============================================================================== +class JLocalAutoRef +{ + JNI_context const & m_jni; + jobject m_jo; + +public: + inline JLocalAutoRef( JNI_context const & jni ) + : m_jni( jni ), + m_jo( 0 ) + {} + inline explicit JLocalAutoRef( JNI_context const & jni, jobject jo ) + : m_jni( jni ), + m_jo( jo ) + {} + inline JLocalAutoRef( JLocalAutoRef & auto_ref ); + inline ~JLocalAutoRef() SAL_THROW( () ); + + inline jobject get() const + { return m_jo; } + inline bool is() const + { return (0 != m_jo); } + inline jobject release(); + inline void reset(); + inline void reset( jobject jo ); + inline JLocalAutoRef & operator = ( JLocalAutoRef & auto_ref ); +}; + +//______________________________________________________________________________ +inline JLocalAutoRef::~JLocalAutoRef() SAL_THROW( () ) +{ + if (0 != m_jo) + m_jni->DeleteLocalRef( m_jo ); +} + +//______________________________________________________________________________ +inline JLocalAutoRef::JLocalAutoRef( JLocalAutoRef & auto_ref ) + : m_jni( auto_ref.m_jni ), + m_jo( auto_ref.m_jo ) +{ + auto_ref.m_jo = 0; +} + +//______________________________________________________________________________ +inline jobject JLocalAutoRef::release() +{ + jobject jo = m_jo; + m_jo = 0; + return jo; +} + +//______________________________________________________________________________ +inline void JLocalAutoRef::reset() +{ + if (0 != m_jo) + m_jni->DeleteLocalRef( m_jo ); + m_jo = 0; +} + +//______________________________________________________________________________ +inline void JLocalAutoRef::reset( jobject jo ) +{ + if (jo != m_jo) + { + if (0 != m_jo) + m_jni->DeleteLocalRef( m_jo ); + m_jo = jo; + } +} + +//______________________________________________________________________________ +inline JLocalAutoRef & JLocalAutoRef::operator = ( JLocalAutoRef & auto_ref ) +{ + OSL_ASSERT( m_jni.get_jni_env() == auto_ref.m_jni.get_jni_env() ); + reset( auto_ref.m_jo ); + auto_ref.m_jo = 0; + return *this; +} + + +//============================================================================== +struct rtl_mem +{ + inline static void * operator new ( size_t nSize ) + { return rtl_allocateMemory( nSize ); } + inline static void operator delete ( void * mem ) + { if (mem) rtl_freeMemory( mem ); } + inline static void * operator new ( size_t, void * mem ) + { return mem; } + inline static void operator delete ( void *, void * ) + {} + + static inline ::std::auto_ptr< rtl_mem > allocate( ::std::size_t bytes ); +}; + +//______________________________________________________________________________ +inline ::std::auto_ptr< rtl_mem > rtl_mem::allocate( ::std::size_t bytes ) +{ + void * p = rtl_allocateMemory( bytes ); + if (0 == p) + throw BridgeRuntimeError( OUSTR("out of memory!") ); + return ::std::auto_ptr< rtl_mem >( (rtl_mem *)p ); +} + + +//============================================================================== +class TypeDescr +{ + typelib_TypeDescription * m_td; + + TypeDescr( TypeDescr & ); // not impl + void operator = ( TypeDescr ); // not impl + +public: + inline explicit TypeDescr( typelib_TypeDescriptionReference * td_ref ); + inline ~TypeDescr() SAL_THROW( () ) + { TYPELIB_DANGER_RELEASE( m_td ); } + + inline typelib_TypeDescription * get() const + { return m_td; } +}; + +//______________________________________________________________________________ +inline TypeDescr::TypeDescr( typelib_TypeDescriptionReference * td_ref ) + : m_td( 0 ) +{ + TYPELIB_DANGER_GET( &m_td, td_ref ); + if (0 == m_td) + { + throw BridgeRuntimeError( + OUSTR("cannot get comprehensive type description for ") + + ::rtl::OUString::unacquired( &td_ref->pTypeName ) ); + } +} + +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |