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IntValue.cpp

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00001 // IntValue.cpp: implementation of the CIntValue class.
00002 /*
00003  * Copyright (c) 1996-2000 Erwin Coumans <coockie@acm.org>

00004  *
00005  * Permission to use, copy, modify, distribute and sell this software

00006  * and its documentation for any purpose is hereby granted without fee,

00007  * provided that the above copyright notice appear in all copies and

00008  * that both that copyright notice and this permission notice appear

00009  * in supporting documentation.  Erwin Coumans makes no

00010  * representations about the suitability of this software for any

00011  * purpose.  It is provided "as is" without express or implied warranty.

00012  *
00013  */
00014 
00015 
00016 #include "IntValue.h"
00017 #include "ErrorValue.h"
00018 #include "FloatValue.h"
00019 #include "BoolValue.h"
00020 #include "StringValue.h"
00021 #include "VoidValue.h"
00022 //#include "FactoryManager.h"
00023 
00025 // Construction/Destruction
00027 
00028 CIntValue::CIntValue()
00029 /*
00030 pre: false

00031 effect: constructs a new CIntValue

00032 */
00033 {
00034 
00035 #ifdef _DEBUG_
00036         m_textval = "Int illegal constructor";
00037 #endif
00038         m_pstrRep=NULL;
00039 }
00040 
00041 CIntValue::CIntValue(int innie)
00042 /*
00043 pre:

00044 effect: constructs a new CIntValue containing int innie

00045 */
00046 {
00047         m_int = innie;
00048         m_pstrRep=NULL;
00049 }
00050 CIntValue::CIntValue(int innie,CCString name,AllocationTYPE alloctype)

00051 {
00052 
00053         m_int = innie;
00054         SetName(name);
00055         
00056         if (alloctype==CValue::STACKVALUE)
00057         {
00058                 CValue::DisableRefCount();
00059         }
00060         m_pstrRep=NULL;
00061         
00062 }
00063 
00064 CIntValue::~CIntValue()
00065 /*
00066 pre:

00067 effect: deletes the object

00068 */
00069 {
00070         if (m_pstrRep)
00071                 delete m_pstrRep;
00072         
00073 }
00074 
00075 CValue* CIntValue::Calc(VALUE_OPERATOR op, CValue *val)
00076 /*
00077 pre:

00078 ret: a new object containing the result of applying operator op to this

00079 object and val

00080 */
00081 {
00082         //return val->CalcInt(op, this);
00083         switch (op) {
00084         case VALUE_NEG_OPERATOR:
00085                 return new CIntValue (-m_int);
00086                 break;
00087         case VALUE_NOT_OPERATOR:
00088                 return new CErrorValue (op2str(op) + "only allowed on booleans");
00089                 break;
00090         case VALUE_AND_OPERATOR:
00091         case VALUE_OR_OPERATOR:
00092                 return new CErrorValue(val->GetText() + op2str(op) + "only allowed on booleans");
00093                 break;
00094         default:
00095                 return val->CalcFinal(VALUE_INT_TYPE, op, this);
00096                 break;
00097         }
00098 }
00099 
00100 CValue* CIntValue::CalcFinal(VALUE_DATA_TYPE dtype, VALUE_OPERATOR op, CValue *val)
00101 /*
00102 pre: the type of val is dtype

00103 ret: a new object containing the result of applying operator op to val and

00104 this object

00105 */
00106 {
00107         CValue *ret;
00108         
00109         switch(dtype) {
00110         case VALUE_EMPTY_TYPE:
00111         case VALUE_INT_TYPE:
00112                 {
00113                         switch (op) {
00114                         case VALUE_ADD_OPERATOR:
00115                                 ret = new CIntValue (((CIntValue *) val)->GetInt() + m_int);
00116                                 break;
00117                         case VALUE_SUB_OPERATOR:
00118                                 ret = new CIntValue (((CIntValue *) val)->GetInt() - m_int);
00119                                 break;
00120                         case VALUE_MUL_OPERATOR:
00121                                 ret = new CIntValue (((CIntValue *) val)->GetInt() * m_int);
00122                                 break;
00123                         case VALUE_DIV_OPERATOR:
00124                                 if (m_int == 0)
00125                                 {
00126                                         if (val->GetNumber() == 0)
00127                                         {
00128                                                 ret = new CErrorValue("Not a Number");
00129                                         } else
00130                                         {
00131                                                 ret = new CErrorValue("Division by zero");
00132                                         }
00133                                 }
00134                                 else
00135                                         ret = new CIntValue (((CIntValue *) val)->GetInt() / m_int);
00136                                 break;
00137                         case VALUE_EQL_OPERATOR:
00138                                 ret = new CBoolValue(((CIntValue *) val)->GetInt() == m_int);
00139                                 break;
00140                         case VALUE_NEQ_OPERATOR:
00141                                 ret = new CBoolValue(((CIntValue *) val)->GetInt() != m_int);
00142                                 break;
00143                         case VALUE_GRE_OPERATOR:
00144                                 ret = new CBoolValue(((CIntValue *) val)->GetInt() > m_int);
00145                                 break;
00146                         case VALUE_LES_OPERATOR:
00147                                 ret = new CBoolValue(((CIntValue *) val)->GetInt() < m_int);
00148                                 break;
00149                         case VALUE_GEQ_OPERATOR:
00150                                 ret = new CBoolValue(((CIntValue *) val)->GetInt() >= m_int);
00151                                 break;
00152                         case VALUE_LEQ_OPERATOR:
00153                                 ret = new CBoolValue(((CIntValue *) val)->GetInt() <= m_int);
00154                                 break;
00155                         case VALUE_NEG_OPERATOR:
00156                                 ret = new CIntValue (-m_int);
00157                                 break;
00158                         default:
00159                                 ret = new CErrorValue("illegal operator. please send a bug report.");
00160                                 break;
00161                         }
00162                         break;
00163                 }
00164         case VALUE_FLOAT_TYPE:
00165                 {
00166                         switch (op) {
00167                         case VALUE_ADD_OPERATOR:
00168                                 ret = new CFloatValue (((CFloatValue *) val)->GetFloat() + m_int);
00169                                 break;
00170                         case VALUE_SUB_OPERATOR:
00171                                 ret = new CFloatValue (((CFloatValue *) val)->GetFloat() - m_int);
00172                                 break;
00173                         case VALUE_MUL_OPERATOR:
00174                                 ret = new CFloatValue (((CFloatValue *) val)->GetFloat() * m_int);
00175                                 break;
00176                         case VALUE_DIV_OPERATOR:
00177                                 if (m_int == 0)
00178                                         ret = new CErrorValue("Division by zero");
00179                                 else
00180                                         ret = new CFloatValue (((CFloatValue *) val)->GetFloat() / m_int);
00181                                 break;
00182                         case VALUE_EQL_OPERATOR:
00183                                 ret = new CBoolValue(((CFloatValue *) val)->GetFloat() == m_int);
00184                                 break;
00185                         case VALUE_NEQ_OPERATOR:
00186                                 ret = new CBoolValue(((CFloatValue *) val)->GetFloat() != m_int);
00187                                 break;
00188                         case VALUE_GRE_OPERATOR:
00189                                 ret = new CBoolValue(((CFloatValue *) val)->GetFloat() > m_int);
00190                                 break;
00191                         case VALUE_LES_OPERATOR:
00192                                 ret = new CBoolValue(((CFloatValue *) val)->GetFloat() < m_int);
00193                                 break;
00194                         case VALUE_GEQ_OPERATOR:
00195                                 ret = new CBoolValue(((CFloatValue *) val)->GetFloat() >= m_int);
00196                                 break;
00197                         case VALUE_LEQ_OPERATOR:
00198                                 ret = new CBoolValue(((CFloatValue *) val)->GetFloat() <= m_int);
00199                                 break;
00200                         default:
00201                                 ret = new CErrorValue("illegal operator. please send a bug report.");
00202                                 break;
00203                         }
00204                         break;
00205                 }
00206         case VALUE_STRING_TYPE:
00207                 {
00208                         switch(op) {
00209                         case VALUE_ADD_OPERATOR:
00210                                 ret = new CStringValue(val->GetText() + GetText(),"");
00211                                 break;
00212                         case VALUE_EQL_OPERATOR:
00213                         case VALUE_NEQ_OPERATOR:
00214                         case VALUE_GRE_OPERATOR:
00215                         case VALUE_LES_OPERATOR:
00216                         case VALUE_GEQ_OPERATOR:
00217                         case VALUE_LEQ_OPERATOR:
00218                                 ret = new CErrorValue("[Cannot compare string with integer]" + op2str(op) + GetText());
00219                                 break;
00220                         default:
00221                                 ret =  new CErrorValue("[operator not allowed on strings]" + op2str(op) + GetText());
00222                                 break;
00223                         }
00224                         break;
00225                 }
00226         case VALUE_BOOL_TYPE:
00227                 ret =  new CErrorValue("[operator not valid on boolean and integer]" + op2str(op) + GetText());
00228                 break;
00229         /*
00230         case VALUE_EMPTY_TYPE:

00231                 {

00232                         switch(op) {

00233                 

00234                                 case VALUE_ADD_OPERATOR:

00235                                 ret = new CIntValue (m_int);

00236                                 break;

00237                         case VALUE_SUB_OPERATOR:

00238                                 ret = new CIntValue (-m_int);

00239                                 break;

00240                         default:

00241                                 {

00242                                         ret = new CErrorValue(op2str(op) +      GetText());

00243                                 }

00244                         }

00245                         break;

00246                 }

00247                 */
00248         case VALUE_ERROR_TYPE:
00249                 ret = new CErrorValue(val->GetText() + op2str(op) +     GetText());
00250                 break;
00251         default:
00252                 ret = new CErrorValue("illegal type. contact your dealer (if any)");
00253                 break;
00254         }
00255         return ret;
00256 }
00257 
00258 
00259 int CIntValue::GetInt()
00260 /*
00261 pre:

00262 ret: the int stored in the object

00263 */
00264 {
00265         return m_int;
00266 }
00267 
00268 
00269 
00270 float CIntValue::GetNumber()

00271 {
00272         return (float) m_int;
00273 }
00274 
00275 
00276 const CCString & CIntValue::GetText()

00277 {
00278         if (!m_pstrRep)
00279                 m_pstrRep=new CCString();
00280         m_pstrRep->Format("%d",m_int);
00281                 
00282         return *m_pstrRep;
00283 }
00284 
00285 CValue* CIntValue::GetReplica() { 
00286         CIntValue* replica = new CIntValue(*this);
00287         CValue::AddDataToReplica(replica);
00288         replica->m_pstrRep = NULL;
00289         
00290         return replica;
00291 };

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