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/*----------------------------------------------------------------------------*/
/* */
/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved. */
/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved. */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the Common Public License v1.0 which accompanies this */
/* distribution. A copy is also available at the following address: */
/* http://www.ibm.com/developerworks/oss/CPLv1.0.htm */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in */
/* the documentation and/or other materials provided with the distribution. */
/* */
/* Neither the name of Rexx Language Association nor the names */
/* of its contributors may be used to endorse or promote products */
/* derived from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* */
/*----------------------------------------------------------------------------*/
#include "RexxCore.h"
#include "BlockClass.hpp"
#include "RexxActivation.hpp"
#include "PackageClass.hpp"
#include "DirectoryClass.hpp"
/******************************************************************************/
/* REXX Kernel */
/* */
/* Primitive Rexx source literal */
/* */
/******************************************************************************/
/**
* Allocate a new RexxSourceLiteral object
*
* @param size The size of the object.
*
* @return The newly allocated object.
*/
void *RexxSourceLiteral::operator new(size_t size)
{
/* Get new object */
return new_object(size, T_SourceLiteral);
}
void RexxSourceLiteral::live(size_t liveMark)
/******************************************************************************/
/* Function: Normal garbage collection live marking */
/******************************************************************************/
{
memory_mark(this->source);
memory_mark(this->package);
memory_mark(this->kind);
memory_mark(this->rawExecutable);
}
void RexxSourceLiteral::liveGeneral(int reason)
/******************************************************************************/
/* Function: Generalized object marking */
/******************************************************************************/
{
memory_mark_general(this->source);
memory_mark_general(this->package);
memory_mark_general(this->kind);
memory_mark_general(this->rawExecutable);
}
void RexxSourceLiteral::flatten(RexxEnvelope *envelope)
/******************************************************************************/
/* Function: Flatten an object */
/******************************************************************************/
{
setUpFlatten(RexxSourceLiteral)
newThis->source = OREF_NULL; // this never should be getting flattened, so sever the connection
newThis->package = OREF_NULL; // idem
newThis->kind = OREF_NULL; // idem
newThis->rawExecutable = OREF_NULL; // idem
cleanUpFlatten
}
RexxSourceLiteral::RexxSourceLiteral(RexxString *s, PackageClass *p, size_t startLine)
{
ProtectedObject pThis(this);
RexxArray *sa = s->makeArray(NULL); // use default separator \n
this->source = sa; // transient, no need of OrefSet
this->package = p; // transient, no need of OrefSet
RexxArray *sourceArray = (RexxArray *)sa->copy();
ProtectedObject pSourceArray(sourceArray);
RexxObject *clauserClass = TheEnvironment->at(OREF_CLAUSER);
RexxObject *clauser = clauserClass->sendMessage(OREF_NEW, (RexxObject *)sourceArray); // must cast sourceArray, otherwise taken as array of arguments
ProtectedObject pClauser(clauser);
RexxObject *sourceLiteralParserClass = TheEnvironment->at(OREF_SOURCELITERALPARSER);
this->kind = (RexxString *)sourceLiteralParserClass->sendMessage(OREF_KIND, clauser); // transient, no need of OrefSet
this->rawExecutable =sourceLiteralParserClass->sendMessage(OREF_RAWEXECUTABLE, this->kind, sourceArray, this->package); // transient, no need of OrefSet
this->closure = (0 == strncmp(this->kind->getStringData(), "cl", 2));
}
RexxObject *RexxSourceLiteral::evaluate(
RexxActivation *context, /* current activation context */
RexxExpressionStack *stack ) /* evaluation stack */
{
RexxContext *rexxContext = (RexxContext *)context->getContextObject();
RexxObject *value = new RexxBlock(this, rexxContext);
stack->push(value); /* place on the evaluation stack */
/* trace if necessary */
context->traceIntermediate(value, TRACE_PREFIX_LITERAL);
return value; /* also return the result */
}
/******************************************************************************/
/* REXX Kernel */
/* */
/* Primitive Rexx contextual source */
/* */
/******************************************************************************/
RexxClass *RexxBlock::classInstance = OREF_NULL; // singleton class instance
/**
* Create initial bootstrap objects
*/
void RexxBlock::createInstance()
{
CLASS_CREATE(RexxBlock, "RexxBlock", RexxClass);
}
/**
* Allocate a new RexxBlock object
*
* @param size The size of the object.
*
* @return The newly allocated object.
*/
void *RexxBlock::operator new(size_t size)
{
/* Get new object */
return new_object(size, T_RexxBlock);
}
/**
* Constructor for a RexxBlock object.
*
* @param p The package class.
*/
RexxBlock::RexxBlock(RexxSourceLiteral *s, RexxContext *c)
{
OrefSet(this, this->sourceLiteral, s);
OrefSet(this, this->variables, (RexxDirectory *)TheNilObject);
if (s->isClosure()) OrefSet(this, this->variables, (RexxDirectory *)c->getVariables());
OrefSet(this, this->executable, TheNilObject);
}
/**
* The Rexx accessible class NEW method. This raises an
* error because RexxBlock objects can only be created
* by the internal interpreter.
*
* @param args The NEW args
* @param argc The count of arguments
*
* @return Never returns.
*/
RexxObject *RexxBlock::newRexx(RexxObject **args, size_t argc)
{
// we do not allow these to be allocated from Rexx code...
reportException(Error_Unsupported_new_method, ((RexxClass *)this)->getId());
return TheNilObject;
}
/**
* An override for the copy method to keep RexxBlock
* objects from being copied.
*
* @return Never returns.
*/
RexxObject *RexxBlock::copyRexx()
{
// we do not allow these to be allocated from Rexx code...
reportException(Error_Unsupported_copy_method, this);
return TheNilObject;
}
RexxObject *RexxBlock::setExecutable(RexxObject *exec)
{
OrefSet(this, this->executable, exec);
return OREF_NULL; // no return value
}
void RexxBlock::live(size_t liveMark)
/******************************************************************************/
/* Function: Normal garbage collection live marking */
/******************************************************************************/
{
memory_mark(this->objectVariables);
memory_mark(this->sourceLiteral);
memory_mark(this->variables);
memory_mark(this->executable);
}
void RexxBlock::liveGeneral(int reason)
/******************************************************************************/
/* Function: Generalized object marking */
/******************************************************************************/
{
memory_mark_general(this->objectVariables);
memory_mark_general(this->sourceLiteral);
memory_mark_general(this->variables);
memory_mark_general(this->executable);
}
void RexxBlock::flatten(RexxEnvelope *envelope)
/******************************************************************************/
/* Function: Flatten an object */
/******************************************************************************/
{
setUpFlatten(RexxBlock)
flatten_reference(newThis->objectVariables, envelope);
newThis->sourceLiteral = OREF_NULL; // this never should be getting flattened, so sever the connection
newThis->variables = OREF_NULL; // idem
newThis->executable = OREF_NULL; // idem
cleanUpFlatten
}