source: cpp/gdk/extvalue.cpp @ 74

// This file is a part of the Framsticks GDK library.
// Copyright (C) 2002-2011  Szymon Ulatowski.  See LICENSE.txt for details.
// Refer to http://www.framsticks.com/ for further information.

#include "extvalue.h"
#include "param.h"
#include <math.h>

SString ExtObject::toString()
{
if (isEmpty()) return SString("<empty object>");
ParamInterface *p=getParamInterface();
int tostr=p->findId("toString");
if (tostr>=0)
        {
        return SString(p->getString(tostr));
        }
else
        {
        SString tmp("<");
        tmp+=p->getName();
        sprintf(tmp.directAppend(30)," object at %p>",
                (object?object:paraminterface));
        tmp.endAppend();
        return tmp;
        }
}

///////////////////////////////////////

void ExtValue::set(const ExtValue& src)
{
switch(src.type)
        {
        case TString: sets(src.sdata()); break;
        case TInt: seti(src.idata()); break;
        case TDouble: setd(src.ddata()); break;
        case TObj: seto(src.odata()); break;
        case TInvalid: type=TInvalid; break;
        }
}

void ExtValue::setEmpty()
{
switch(type)
        {
#ifdef EXTVALUEUNION
        case TString: sdata().~SString(); break;
        case TObj: odata().~ExtObject(); break;
#else
        case TString: delete s; break;
        case TObj: delete o; break;
#endif
        }
type=TUnknown;
}

static long longsign(long x)
{
if (x<0) return -1;
if (x>0) return 1;
return 0;
}

long ExtValue::compare(const ExtValue& src) const
{
if (type==TUnknown)
        {
        if (src.type==TDouble)
                return (src.getDouble()!=0.0);
        if (src.type==TString)
                return 1;
        return src.getInt()?1:0;
        }
else if (src.type==TUnknown)
        {
        if (type==TDouble)
                return (getDouble()!=0.0);
        if (type==TString)
                return 1;
        return getInt()?1:0;
        }
switch(type)
        {
        case TInt:
        {
        long t=src.getInt();
        if (idata()>0)
                {if (t>0) return longsign(idata()-t); else return +1;}
        else
                {if (t<=0) return longsign(idata()-t); else return -1;}
        }
        case TDouble:
                {
                double t=ddata()-src.getDouble();
                if (t<0) return -1;
                else if (t>0) return 1;
                return 0;
                }
        case TString:
        {
        SString t=src.getString();
        SString& t2=sdata();
        const char* s1=(const char*)t2;
        const char* s2=(const char*)t;
        return longsign(strcmp(s1,s2));
        }
        case TObj: 
        {
        if (src.type==TObj)
                return !(odata()==src.odata());
        return 1;
        }
        }
return 1;
}

int ExtValue::operator==(const ExtValue& src) const
{
if (type!=src.type) return 0;
switch(type)
        {
        case TInt: return idata()==src.idata();
        case TDouble: return ddata()==src.ddata();
        case TString: return sdata()==src.sdata();
        case TObj: return odata()==src.odata();
        }
return 1;
}

void ExtValue::operator+=(const ExtValue& src)
{
switch(type)
        {
        case TInt: idata()+=src.getInt(); break;
        case TDouble: ddata()+=src.getDouble(); break;
        case TString: sdata()+=src.getString(); break;
        }
}

void ExtValue::operator-=(const ExtValue& src)
{
switch(type)
        {
        case TInt: idata()-=src.getInt(); break;
        case TDouble: ddata()-=src.getDouble(); break;
        }
}

void ExtValue::operator*=(const ExtValue& src)
{
switch(type)
        {
        case TInt: idata()*=src.getInt(); break;
        case TDouble: ddata()*=src.getDouble(); break;
        }
}

#include "framsg.h"
/*#include "fpu_control.h"
#include <signal.h>

static int fpuexception;
void mathhandler(int sig)
{
printf("fpu exception!\n");
fpuexception=1;
signal(SIGFPE,SIG_IGN);
} */

void ExtValue::operator/=(const ExtValue& src)
{
switch(type)
        {
        case TInt:
        { int a=src.getInt();
//              idata()/=src.getInt();
        if (a) idata()/=a;
        else FMprintf("ExtValue","divide",FMLV_ERROR,"%s/0",(const char*)getString());
        }
                break;

        case TDouble:
// ugly ;-(
#ifdef FPU_THROWS_EXCEPTIONS
                try
                        {
                        ddata()/=src.getDouble();
                        }
                catch(...)
                        {
                        FMprintf("ExtValue","divide",FMLV_ERROR,"%s/0.0",(const char*)getString());
                        }
#else
                {
                double d=ddata();
                d/=src.getDouble();
                if (finite(d))
                        ddata()=d;
                else
                        FMprintf("ExtValue","divide",FMLV_ERROR,"%s/0.0",(const char*)getString());
                }
#endif
                break;
        }
}

void ExtValue::operator%=(const ExtValue& src)
{
switch(type)
        {
        case TInt: idata()=idata()%src.getInt(); break;
        case TDouble: ddata()=fmod(ddata(),src.getDouble()); break;
        }
}

long ExtValue::getInt() const
{
switch(type)
        {
        case TInt: return idata();
        case TDouble: return (int)ddata();
        case TString:
        {
        const char* s=(const char*)sdata();
        if ((s[0]=='0')&&(s[1]=='x'))
                {
                long val;
                sscanf(s+2,"%lx",&val);
                return val;
                }
        else
                {
                if (strchr(s,'e')||(strchr(s,'E')))
                        return atof(s);
                else
                        return atol(s);
                }
        }
        case TObj: return (long)odata().param;
        }
return 0;
}
double ExtValue::getDouble() const
{
switch(type)
        {
        case TDouble: return ddata();
        case TInt: return (double)idata();
        case TString:
        {
        const char* s=(const char*)sdata();
        if ((s[0]=='0')&&(s[1]=='x'))
                {
                long val;
                sscanf(s+2,"%lx",&val);
                return val;
                }
        else
                return atof(s);
        }
        case TObj: return (double)(long)odata().param;
        }
return 0.0;
}
SString ExtValue::getString() const
{
switch(type)
        {
        case TString: return sdata();
        case TInt:
                {
                SString tmp;
                sprintf(tmp.directAppend(20),"%d",idata());
                tmp.endAppend();
                return tmp;
                }
        case TDouble:
                {
                SString tmp;
                sprintf(tmp.directAppend(20),"%.15g",ddata());
                tmp.endAppend();
                if ((!strchr(tmp,'.'))&&(!strchr(tmp,'e'))) tmp+=".0";
                return tmp;
                }
        case TObj:
                return odata().toString();
        case TInvalid:
                return SString("undefined");
        default:
                return SString("null");
        }
}

ExtObject ExtValue::getObject() const
{
if (type==TObj) return odata();
return ExtObject();
}

ExtValue ExtValue::getExtType()
{
if (getType()!=TObj) return ExtValue((long)getType());
ExtObject& o=odata();
return ExtValue(SString(o.isEmpty()?"":o.getParamInterface()->getName()));
}