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