NextiCommand.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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/**
 * @file NextiCommand.cc
 *
 * Implementation of NextiCommand class
 *
 * @author Pekka Jääskeläinen 2005 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#include "NextiCommand.hh"
#include "Application.hh"
#include "FileSystem.hh"
#include "SimulatorFrontend.hh"
#include "SimulatorInterpreterContext.hh"
#include "Exception.hh"
#include "SimulatorToolbox.hh"
#include "SimulatorTextGenerator.hh"
#include "SimControlLanguageCommand.hh"
#include "SimValue.hh"
#include "Procedure.hh"
#include "Instruction.hh"
 
#include <iostream>
 
using namespace TTAProgram;
 
/**
 * Constructor.
 *
 * Sets the name of the command to the base class.
 */
NextiCommand::NextiCommand() : 
    SimControlLanguageCommand("nexti") {
}
 
/**
 * Destructor.
 *
 * Does nothing.
 */
NextiCommand::~NextiCommand() {
}
 
/**
 * Executes the "nexti" command.
 *
 * Advances simulation to the next machine instructions in current 
 * procedure. If the instruction contains a function call, simulation 
 * proceeds until control returns from it, to the instruction past 
 * the function call. The count argument gives the number of machine 
 * instruction to simulate.
 *
 * @param arguments The count of steps (default is one step).
 * @return True in case simulation is initialized and arguments are ok.
 * @exception NumberFormatException Is never thrown by this command.
 */
bool
NextiCommand::execute(const std::vector<DataObject>& arguments) {
    const int argumentCount = arguments.size() - 1;
    if (!checkArgumentCount(argumentCount, 0, 1)) {
        return false;
    } 
 
    if (!checkSimulationInitialized() && !checkSimulationStopped()) {
        return false;
    }
 
    unsigned int stepCount = 1;
    if (argumentCount == 1) { 
        if (!checkPositiveIntegerArgument(arguments[1])) {
            return false;
        }
        stepCount = arguments[1].integerValue();
    }        
    
    simulatorFrontend().next(stepCount);
        
    printNextInstruction();
    return true;
}
 
/**
 * Returns the help text for this command.
 * 
 * Help text is searched from SimulatorTextGenerator.
 *
 * @return The help text.
 */
std::string 
NextiCommand::helpText() const {
    return SimulatorToolbox::textGenerator().text(
        Texts::TXT_INTERP_HELP_NEXTI).str();
}