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