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// StringValue.cpp: implementation of the CStringValue class.
/*
* Copyright (c) 1996-2000 Erwin Coumans <coockie@acm.org>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Erwin Coumans makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
*/
#include "StringValue.h"
#include "BoolValue.h"
#include "ErrorValue.h"
#include "VoidValue.h"
//#include "FactoryManager.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CStringValue::CStringValue()
/*
pre: false
effect: constructs a new CStringValue
*/
{
m_strString = "[Illegal String constructor call]";
}
CStringValue::CStringValue(STR_String txt,STR_String name,AllocationTYPE alloctype)
/*
pre:
effect: constructs a new CStringValue containing text txt
*/
{
m_strString = txt;
SetName(name);
if (alloctype==CValue::STACKVALUE)
{
CValue::DisableRefCount();
}
}
CValue* CStringValue::Calc(VALUE_OPERATOR op, CValue *val)
/*
pre:
ret: a new object containing the result of applying operator op to this
object and val
*/
{
//return val->CalrcString(op, this);
return val->CalcFinal(VALUE_STRING_TYPE, op, this);
}
CValue* CStringValue::CalcFinal(VALUE_DATA_TYPE dtype, VALUE_OPERATOR op, CValue *val)
/*
pre: the type of val is dtype
ret: a new object containing the result of applying operator op to val and
this object
*/
{
CValue *ret;
if (op == VALUE_ADD_OPERATOR) {
if (dtype == VALUE_ERROR_TYPE)
ret = new CErrorValue(val->GetText() + op2str(op) + GetText());
else
ret = new CStringValue(val->GetText() + GetText(),"");
} else {
if (dtype == VALUE_STRING_TYPE || dtype == VALUE_EMPTY_TYPE) {
switch(op) {
case VALUE_EQL_OPERATOR:
ret = new CBoolValue(val->GetText() == GetText());
break;
case VALUE_NEQ_OPERATOR:
ret = new CBoolValue(val->GetText() != GetText());
break;
case VALUE_GRE_OPERATOR:
ret = new CBoolValue(val->GetText() > GetText());
break;
case VALUE_LES_OPERATOR:
ret = new CBoolValue(val->GetText() < GetText());
break;
case VALUE_GEQ_OPERATOR:
ret = new CBoolValue(val->GetText() >= GetText());
break;
case VALUE_LEQ_OPERATOR:
ret = new CBoolValue(val->GetText() <= GetText());
break;
default:
ret = new CErrorValue(val->GetText() + op2str(op) + "[operator not allowed on strings]");
break;
}
} else {
ret = new CErrorValue(val->GetText() + op2str(op) + "[operator not allowed on strings]");
}
}
return ret;
}
float CStringValue::GetNumber()
{
return -1;
}
const STR_String & CStringValue::GetText()
{
return m_strString;
}
bool CStringValue::IsEqual(const STR_String & other)
{
return (m_strString == other);
}
CValue* CStringValue::GetReplica()
{
CStringValue* replica = new CStringValue(*this);
CValue::AddDataToReplica(replica);
return replica;
};
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