static public VarInfo IsEqual(List <VarInfo> parameters)
{
if (parameters.Count == 2)
{
bool temp;
try
{
temp = VarInfo.IsEqual(parameters[0], parameters[1]);
}
catch
{
return(VarInfo.NullVal);
}
VarInfo result = new VarInfo(temp);
return(result);
}
return(VarInfo.NullVal);
}
private IGoLink PickLinkFromConditionBlock(List<IGoLink> OutLinks, VarInfo blockResult, out string ErrorReport)
{
IGoLink pickedLink = null;
ErrorReport = "";
int countElement = OutLinks.Count;
// check for duplicated link value:
for(int i=0; i<countElement-1; i++)
for(int j=i+1; j<countElement; j++)
{
string linkValue1 = ( (OutLinks[i] as GoLabeledLink).FromLabel as GoText).Text;
linkValue1 = linkValue1.ToUpper();
linkValue1 = FlowDataManager.RemoveSpacing(linkValue1);
if (linkValue1 == "")
{
ErrorReport = "Error: Blank out-link label";
return null;
}
if (linkValue1[0] >= 'A' && linkValue1[0] <= 'Z')
linkValue1 = "$" + linkValue1;
string linkValue2 = ( (OutLinks[j] as GoLabeledLink).FromLabel as GoText).Text;
linkValue2 = linkValue2.ToUpper();
linkValue2 = FlowDataManager.RemoveSpacing(linkValue2);
if (linkValue2 == "")
{
ErrorReport = "Error: Blank out-link label";
return null;
}
if (linkValue2[0]>='A' && linkValue2[0]<='Z')
linkValue2 = "$" + linkValue2;
if(linkValue1 == "$ELSE")
{
pickedLink = OutLinks[i];
}
if(linkValue2 == "$ELSE")
{
pickedLink = OutLinks[j];
}
if(linkValue1 == "$ELSE" && linkValue2 == "$ELSE")
{
ErrorReport = "Error: Duplicated out link label/value: ELSE";
return null;
}
VarInfo linkVar1 = FlowDataManager.HandleConst(linkValue1);
VarInfo linkvar2 = FlowDataManager.HandleConst(linkValue2);
if( VarInfo.IsEqual(linkVar1,linkvar2) )
{
ErrorReport = "Error: Duplicated out link label/value: " + linkValue1;
return null;
}
}
// check all valid links
foreach(IGoLink link in OutLinks)
{
string linkValue = ( (link as GoLabeledLink).FromLabel as GoText).Text;
linkValue = linkValue.ToUpper();
linkValue = FlowDataManager.RemoveSpacing(linkValue);
if (linkValue == "")
{
ErrorReport = "Error: Blank out-link label";
return null;
}
if (linkValue[0]>='A' && linkValue[0]<='Z')
linkValue = "$" + linkValue;
if(linkValue == "$ELSE")
{
continue;
}
VarInfo tempVar = FlowDataManager.HandleConst(linkValue);
if(tempVar.isNull)
{
ErrorReport = "Error: Illegal out-link label: " + linkValue;
return null;
}
if( VarInfo.IsEqual(tempVar, blockResult) )
{
pickedLink = link;
}
}
if(pickedLink == null)
{
ErrorReport = "Error: Couldn't find a label that matches value: " + blockResult.value;
return null;
}
return pickedLink;
}
