/*

    Copyright (C) 2003 Stefan Westerfeld <stefan@space.twc.de>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

    */

#include "instruction.hh"

using namespace Bse::EvaluatorUtils;

Instruction Instruction::rr(Instruction::Type ins, int reg1, int reg2)
{
    Instruction i;
    i.ins = ins;
    i.p1.reg = reg1;
    i.p2.reg = reg2;
    return i;
}

Instruction Instruction::rv(Instruction::Type ins, int reg, double val)
{
    Instruction i;
    i.ins = ins;
    i.p1.reg = reg;
    i.p2.val = val;
    return i;
}

void Instruction::rw_registers(int& read1, int& read2, int& write1, int& write2) const
{
    read1 = read2 = write1 = write2 = -1;
    if (ins == SET)
    {
	write1 = p1.reg;
    }
    if (ins == MOVE)
    {
	write1 = p1.reg;
	read1 = p2.reg;
    }
    if (ins == ADD || ins == MUL)
    {
	read1 = p1.reg;
	read2 = p2.reg;
	write1 = p1.reg;
    }
    if (ins == SIN)
    {
	read1 = write1 = p1.reg;
    }
}

void Instruction::print(const Symbols& symbols) const
{
    switch(ins)
    {
	case SET:   printf("SET  %s, %f\n", symbols.name(p1.reg).c_str(), p2.val);
		    break;
	case MOVE:  printf("MOVE %s, %s\n", symbols.name(p1.reg).c_str(),
					    symbols.name(p2.reg).c_str());
		    break;
	case ADD:   printf("ADD  %s, %s\n", symbols.name(p1.reg).c_str(),
					    symbols.name(p2.reg).c_str());
		    break;
	case MUL:   printf("MUL  %s, %s\n", symbols.name(p1.reg).c_str(),
					    symbols.name(p2.reg).c_str());
		    break;
    	case SIN:   printf("SIN  %s\n",     symbols.name(p1.reg).c_str());
		    break;
    }
}

/* vim:set ts=8 sw=4 sts=4: */