TPEFResourceSectionReader.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
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    Software is furnished to do so, subject to the following conditions:
 
    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
 
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    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/**
 * @file TPEFResourceSectionReader.cc
 *
 * Definition of TPEFResourceSectionReader class.
 *
 * @author Mikael Lepistö 2003 (tmlepist-no.spam-cs.tut.fi)
 *
 * @note rating: yellow
 */
 
#include "TPEFResourceSectionReader.hh"
#include "ResourceSection.hh"
#include "SafePointer.hh"
#include "Exception.hh"
#include "ReferenceKey.hh"
#include "SectionReader.hh"
#include "TPEFBaseType.hh"
#include "ResourceElement.hh"
#include "BinaryStream.hh"
 
namespace TPEF {
 
using ReferenceManager::SafePointer;
using ReferenceManager::SectionKey;
using ReferenceManager::SectionIndexKey;
using ReferenceManager::SectionOffsetKey;
 
TPEFResourceSectionReader TPEFResourceSectionReader::proto_;
 
/**
 * Constructor.
 *
 * Registers itself to SectionReader.
 */
TPEFResourceSectionReader::TPEFResourceSectionReader() :
    TPEFSectionReader() {
    SectionReader::registerSectionReader(this);
}
 
/**
 * Destructor.
 */
TPEFResourceSectionReader::~TPEFResourceSectionReader() {
}
 
/**
 * Returns the type of section which reader can read.
 *
 * @return The type of section which reader can read.
 */
Section::SectionType
TPEFResourceSectionReader::type() const {
    return Section::ST_MR;
}
 
/**
 * Reads section data from TPEF binary file.
 *
 * @param stream Stream to be read from.
 * @param section Section where the information is to be stored.
 * @exception UnreachableStream If reading of section fails.
 * @exception KeyAlreadyExists Key was in use when trying to register object.
 * @exception EndOfFile If end of file were reached while it shouldn't.
 * @exception OutOfRange Some of read value were out of range.
 * @exception WrongSubclass Some class couldn't do what it was asked for.
 * @exception UnexpectedValue If there was unexpected value when reading.
 */
void
TPEFResourceSectionReader::readData(
    BinaryStream& stream, Section* section) const {
    // base classes implementation must be called with these
    TPEFSectionReader::readData(stream, section);
 
    ResourceSection* resourceSection =
        dynamic_cast<ResourceSection*>(section);
    assert(resourceSection != NULL);
 
    // check that link section is defined properly
    assert(header().linkId != 0);
 
    if (!section->noBits()) {
        // store start of first element
        SectionOffset elementStart = header().bodyOffset;
 
        while (elementStart + header().elementSize <=
               header().bodyOffset + header().bodyLength) {
 
            ResourceElement *elem = new ResourceElement();
 
            // TODO: check that OP, SR and PORT share the same id space and
            // don't collide
 
            elem->setId(stream.readHalfWord());
 
            elem->setType(
                static_cast<ResourceElement::ResourceType>
                (stream.readByte()));
 
            SectionOffsetKey
                nameSectOffset(header().linkId, stream.readWord());
 
            elem->setName(CREATE_SAFEPOINTER(nameSectOffset));
 
            elem->setInfo(stream.readWord());
 
            section->addElement(elem);
 
            elementStart += header().elementSize;
            stream.setReadPosition(elementStart);
        }
    }
}
}