NullProcedure.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
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/**
 * @file NullProcedure.cc
 *
 * Implementation of NullProcedure class.
 *
 * @author Ari Metsähalme 2005 (ari.metsahalme-no.spam-tut.fi)
 * @note rating: red
 */
 
#include "NullProcedure.hh"
#include "NullProgram.hh"
#include "NullInstruction.hh"
#include "NullAddress.hh"
#include "NullAddressSpace.hh"
 
using namespace TTAMachine;
 
namespace TTAProgram {
 
/////////////////////////////////////////////////////////////////////////////
// NullProcedure
/////////////////////////////////////////////////////////////////////////////
 
NullProcedure NullProcedure::instance_;
 
/**
 * The constructor.
 */
NullProcedure::NullProcedure() :
    Procedure("NULL", NullAddressSpace::instance()) {
}
 
/**
 * The destructor.
 */
NullProcedure::~NullProcedure() {
}
 
/**
 * Returns an instance of NullProcedure class (singleton).
 *
 * @return Singleton instance of NullProcedure class.
 */
NullProcedure&
NullProcedure::instance() {
    return instance_;
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null program.
 * @exception IllegalRegistration never.
 */
Program&
NullProcedure::parent() const {
    abortWithError("parent()");
    return NullProgram::instance();
}
 
/**
 * Aborts program with error log message.
 */
void
NullProcedure::setParent(Program&) {
    abortWithError("setParent()");
}
 
/**
 * Aborts program with error log message.
 *
 * @return False.
 */
bool
NullProcedure::isInProgram() const {
    abortWithError("isInProgram()");
    return false;
}
 
std::string
NullProcedure::name() const {
    abortWithError("name()");
    return "";
}
 
int
NullProcedure::alignment() const {
    abortWithError("alignment()");
    return -1;
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null address.
 * @exception IllegalRegistration never.
 */
Address
NullProcedure::address(const Instruction&) const {
    abortWithError("address()");
    return NullAddress::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null address.
 */
Address
NullProcedure::startAddress() const {
    abortWithError("startAddress()");
    return NullAddress::instance();
}
 
/**
 * Aborts program with error log message.
 */
void
NullProcedure::setStartAddress(Address) {
    abortWithError("setStartAddress()");
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null address.
 */
Address
NullProcedure::endAddress() const {
    abortWithError("endAddress()");
    return NullAddress::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @return -1.
 */
int
NullProcedure::instructionCount() const {
    abortWithError("instructionCount()");
    return -1;
}
 
Instruction&
NullProcedure::firstInstruction() const {
    abortWithError("firstInstruction()");
    return NullInstruction::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null instruction.
 * @exception KeyNotFound never.
 */
Instruction&
NullProcedure::instructionAt(UIntWord) const {
    abortWithError("instructionAt()");
    return NullInstruction::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @return False.
 * @exception IllegalRegistration never.
 */
bool
NullProcedure::hasNextInstruction(const Instruction&) const {
    abortWithError("hasNextInstruction()");
    return false;
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null instruction.
 * @exception IllegalRegistration never.
 */
Instruction&
NullProcedure::nextInstruction(const Instruction&) const {
    abortWithError("nextInstruction()");
    return NullInstruction::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null instruction.
 * @exception IllegalRegistration never.
 */
Instruction&
NullProcedure::previousInstruction(const Instruction&) const {
    abortWithError("previousInstruction()");
    return NullInstruction::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @return A null instruction.
 * @exception IllegalRegistration never.
 */
Instruction&
NullProcedure::lastInstruction() const {
    abortWithError("lastInstruction()");
    return NullInstruction::instance();
}
 
/**
 * Aborts program with error log message.
 *
 * @exception IllegalRegistration never.
 */
void
NullProcedure::addInstruction(Instruction&) {
    abortWithError("addInstruction()");
}
 
/**
 * Aborts program with error log message.
 *
 * @exception IllegalRegistration never.
 */
void
NullProcedure::insertInstructionAfter(const Instruction&, Instruction*) {
    abortWithError("insertInstructionAfter()");
}
}