Initial revision

source/gameengine/Expressions/ErrorValue.cpp

@@ -0,0 +1,125 @@
+// ErrorValue.cpp: implementation of the CErrorValue 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 "ErrorValue.h"
+
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+CErrorValue::CErrorValue()
+/*
+pre:
+effect: constructs a new CErrorValue containing errormessage "Error"
+*/
+{
+	m_strErrorText = "Error";
+	SetError(true);
+}
+
+
+
+CErrorValue::CErrorValue(STR_String errmsg)
+/*
+pre:
+effect: constructs a new CErrorValue containing errormessage errmsg
+*/
+{
+  m_strErrorText = "[" + errmsg + "]";
+  SetError(true);
+}
+
+
+
+CErrorValue::~CErrorValue()
+/*
+pre:
+effect: deletes the object
+*/
+{
+
+}
+
+
+
+CValue* CErrorValue::Calc(VALUE_OPERATOR op, CValue *val)
+/*
+pre:
+ret: a new object containing the result of applying operator op to this
+	 object and val
+*/
+{
+	CValue* errorval;
+
+	switch (op)
+	{
+	case VALUE_POS_OPERATOR:
+	case VALUE_NEG_OPERATOR:
+	case VALUE_NOT_OPERATOR:
+		{
+			errorval = new CErrorValue (op2str(op) + GetText());
+			break;
+		}
+	default:
+		{
+			errorval = val->CalcFinal(VALUE_ERROR_TYPE, op, this);
+			break;
+		}
+	}
+	
+	return errorval;
+}
+
+
+
+CValue* CErrorValue::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
+*/
+{
+	return new CErrorValue (val->GetText() + op2str(op) + GetText());
+}
+
+
+
+float CErrorValue::GetNumber()
+{
+	return -1;
+}
+
+
+
+const STR_String & CErrorValue::GetText()
+{
+	return m_strErrorText;
+}
+
+
+
+CValue* CErrorValue::GetReplica()
+{ 
+	// who would want a copy of an error ?
+	trace ("Error: ErrorValue::GetReplica() not implemented yet");
+	assertd(false);
+
+	return NULL;
+}