FileOffsetReplacer.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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    the rights to use, copy, modify, merge, publish, distribute, sublicense,
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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.
 
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 */
/**
 * @file FileOffsetReplacer.cc
 *
 * Non-inline implementations of FileOffsetReplacer class.
 *
 * @author Mikael Lepistö 2003 (tmlepist-no.spam-cs.tut.fi)
 *
 * @note rating: yellow
 */
 
#include "FileOffsetReplacer.hh"
#include "SafePointer.hh"
#include "BinaryStream.hh"
 
namespace TPEF {
 
using ReferenceManager::SafePointer;
using ReferenceManager::FileOffsetKey;
 
/**
 * Constructor.
 */
FileOffsetReplacer::FileOffsetReplacer(const SafePointable* obj) :
    ValueReplacer(obj) {
}
 
/**
 * Copy constructor.
 */
FileOffsetReplacer::FileOffsetReplacer(
    const FileOffsetReplacer& replacer) : ValueReplacer(replacer) {
}
 
/**
 * Destructor.
 */
FileOffsetReplacer::~FileOffsetReplacer() {
}
 
/**
 * Tries to do replacement in to the stream.
 *
 * @return True if replacement were done.
 */
bool
FileOffsetReplacer::tryToReplace() {
    try {
        FileOffsetKey key =
            SafePointer::fileOffsetKeyFor(reference());
 
        stream().setWritePosition(streamPosition());
        stream().writeWord(key.fileOffset());
        return true;
 
    } catch (KeyNotFound& e) {
        stream().writeWord(0);
        return false;
    }
}
 
/**
 * Creates dynamically allocated copy of replacer.
 *
 * @return Dynamically allocated copy of replacer.
 */
ValueReplacer*
FileOffsetReplacer::clone() {
    return new FileOffsetReplacer(*this);
}
 
}