TPEF::SectionIndexReplacer Class Reference

#include <SectionIndexReplacer.hh>

Inheritance diagram for TPEF::SectionIndexReplacer:

Collaboration diagram for TPEF::SectionIndexReplacer:

Public Member Functions
	SectionIndexReplacer (const SafePointable *obj, Byte fieldSize)
virtual	~SectionIndexReplacer ()
Public Member Functions inherited from TPEF::ValueReplacer
void	resolve ()

Protected Member Functions
virtual bool	tryToReplace ()
virtual ValueReplacer *	clone ()
Protected Member Functions inherited from TPEF::ValueReplacer
	ValueReplacer (const SafePointable *obj)
	ValueReplacer (const ValueReplacer &replacer)
virtual	~ValueReplacer ()
const SafePointable *	reference () const
unsigned int	streamPosition () const

Private Member Functions
	SectionIndexReplacer (const SectionIndexReplacer &replacer)
SectionIndexReplacer	operator= (const SectionIndexReplacer &)
void	writeReplacement (Word value)

Private Attributes
const Byte	fieldSize_
	Field how many bytes of stream are replaced with section index.

Additional Inherited Members
Static Public Member Functions inherited from TPEF::ValueReplacer
static void	finalize ()
static void	initialize (BinaryStream &stream)
Static Protected Member Functions inherited from TPEF::ValueReplacer
static BinaryStream &	stream ()

Detailed Description

Replaces object reference with section index. Section index key must be stored in reference manager for that object whose section index is written.

Definition at line 48 of file SectionIndexReplacer.hh.

Constructor & Destructor Documentation

SectionIndexReplacer() [1/2]

TPEF::SectionIndexReplacer::SectionIndexReplacer	(	const SafePointable *	obj,
		Byte	size
	)

Constructor.

Definition at line 46 of file SectionIndexReplacer.cc.

                                         :
    ValueReplacer(obj), fieldSize_(size) {
}

~SectionIndexReplacer()

TPEF::SectionIndexReplacer::~SectionIndexReplacer ( )

virtual

Destructor.

Definition at line 62 of file SectionIndexReplacer.cc.

                                            {
}

SectionIndexReplacer() [2/2]

TPEF::SectionIndexReplacer::SectionIndexReplacer ( const SectionIndexReplacer &  replacer )

private

Copy constructor.

Definition at line 54 of file SectionIndexReplacer.cc.

                                          :
    ValueReplacer(replacer), fieldSize_(replacer.fieldSize_) {
}

Member Function Documentation

clone()

ValueReplacer * TPEF::SectionIndexReplacer::clone ( )

protectedvirtual

Creates dynamically allocated copy of replacer.

Returns

Dynamically allocated copy of replacer.

Implements TPEF::ValueReplacer.

Definition at line 92 of file SectionIndexReplacer.cc.

                            {
    return new SectionIndexReplacer(*this);
}

operator=()

SectionIndexReplacer TPEF::SectionIndexReplacer::operator= ( const SectionIndexReplacer &  )

private

tryToReplace()

bool TPEF::SectionIndexReplacer::tryToReplace ( )

protectedvirtual

Tries to do replacement in to the stream.

Returns

True if replacement were done.

Implements TPEF::ValueReplacer.

Definition at line 71 of file SectionIndexReplacer.cc.

                                   {
    try {
        SectionIndexKey key =
            SafePointer::sectionIndexKeyFor(reference());
 
        stream().setWritePosition(streamPosition());
        writeReplacement(key.index());
        return true;
 
    } catch (KeyNotFound& e) {
        writeReplacement(0);
        return false;
    }
}

References TPEF::ReferenceManager::SectionIndexKey::index(), TPEF::ValueReplacer::reference(), TPEF::ReferenceManager::SafePointer::sectionIndexKeyFor(), TPEF::BinaryStream::setWritePosition(), TPEF::ValueReplacer::stream(), TPEF::ValueReplacer::streamPosition(), and writeReplacement().

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writeReplacement()

void TPEF::SectionIndexReplacer::writeReplacement ( Word  value )

private

Writes value with one, two or four bytes wide.

Parameters

value

Value to be written.

Definition at line 102 of file SectionIndexReplacer.cc.

                                                 {
    switch (fieldSize_) {
    case 1: {
        stream().writeByte(value);
        break;
    }
    case 2: {
        stream().writeHalfWord(value);
        break;
    }
    case 3: {
        Byte firstByte = (value >> HALFWORD_BITWIDTH);
        HalfWord lastBytes = (value << HALFWORD_BITWIDTH)
                                    >> HALFWORD_BITWIDTH;
 
        // writing three bytes in big endian format
        stream().writeHalfWord(lastBytes);
        stream().writeByte(firstByte);
        break;
    }
    case 4: {
        stream().writeWord(value);
        break;
    }
    default:
        bool unsupportedFieldSizeOfReplacement = false;
        assert(unsupportedFieldSizeOfReplacement);
        }
}

References assert, fieldSize_, HALFWORD_BITWIDTH, TPEF::ValueReplacer::stream(), TPEF::BinaryStream::writeByte(), TPEF::BinaryStream::writeHalfWord(), and TPEF::BinaryStream::writeWord().

Referenced by tryToReplace().

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Member Data Documentation

fieldSize_

const Byte TPEF::SectionIndexReplacer::fieldSize_

private

Field how many bytes of stream are replaced with section index.

Definition at line 65 of file SectionIndexReplacer.hh.

Referenced by writeReplacement().

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The documentation for this class was generated from the following files:

• SectionIndexReplacer.hh
• SectionIndexReplacer.cc