private SymParserWorker CreateWorkerByTokenType(SymToken aToken)
{
// Find a worker to handle the token type
SymParserWorkerContext context = new SymParserWorkerContext(WorkerContext.Document.Context, this, aToken);
//
SymParserWorker worker = null;
switch (aToken.Value.ToLower())
{
// Simple preprocessor operations
case "prj_platforms":
break;
case "prj_exports":
break;
case "prj_testexports":
break;
case "prj_mmpfiles":
break;
case "prj_testmmpfiles":
break;
// Skip unhandled preprocessor directives
default:
break;
}
//
return(worker);
}
public override SymParserWorker.TTokenConsumptionType OfferToken(SymToken aToken)
{
// Offer the token to the base class first. If it doesn't want it, we'll
// check it.
TTokenConsumptionType ret = base.OfferToken(aToken);
if (ret == TTokenConsumptionType.ETokenNotConsumed)
{
if (aToken.Class != SymToken.TClass.EClassComment)
{
// Try to find a new child worker to handle this kind
// of data.
SymParserWorker worker = CreateWorkerByTokenType(aToken);
if (worker != null)
{
System.Diagnostics.Debug.WriteLine("SymWorkerBuildFileMain.OfferToken() - FOUND HANDLER FOR: " + aToken.Value);
AddChild(worker);
ret = TTokenConsumptionType.ETokenConsumed;
}
}
}
//
return(ret);
}
private SymParserWorker CreateWorkerByTokenType(SymToken aToken)
{
// Find a worker to handle the token type
SymParserWorker worker = null;
SymParserWorkerContext context = new SymParserWorkerContext(WorkerContext, this, aToken);
//
switch (aToken.Value)
{
// Simple preprocessor operations
case "define":
worker = new SymPreProcessorWorkerDefine(context);
break;
case "undef":
break;
case "include":
worker = new SymPreProcessorWorkerInclude(context);
break;
// Conditionality
case "if":
worker = new SymPreProcessorWorkerIf(context);
break;
case "ifdef":
worker = new SymPreProcessorWorkerIfdef(context);
break;
case "ifndef":
worker = new SymPreProcessorWorkerIfndef(context);
break;
case "else":
worker = new SymPreProcessorWorkerElse(context);
break;
case "elif":
worker = new SymPreProcessorWorkerElseIf(context);
break;
case "endif":
worker = new SymPreProcessorWorkerEndif(context);
break;
// Skip unhandled preprocessor directives
default:
worker = new SymParserWorkerConsumer(context, SymToken.TClass.EClassNewLine);
break;
}
//
return(worker);
}
public override SymParserWorker.TTokenConsumptionType OfferToken(SymToken aToken)
{
TTokenConsumptionType ret = TTokenConsumptionType.ETokenNotConsumed;
#region Identify preprocessor tokens
if (aToken.Class == SymToken.TClass.EClassPreProcessor)
{
if (ChildCount == 0)
{
if (aToken.Value == "#")
{
// Always consume initial preprocessor tokens...
ret = TTokenConsumptionType.ETokenConsumed;
}
else
{
// Try to find a new child worker to handle this kind
// of data.
SymParserWorker worker = CreateWorkerByTokenType(aToken);
//
if (worker != null)
{
System.Diagnostics.Debug.WriteLine("SymPreProcessorWorker.OfferToken() - FOUND HANDLER FOR: " + aToken.Value);
AddChild(worker);
ret = TTokenConsumptionType.ETokenConsumed;
}
}
}
}
#endregion
// Give it to the children
if (ret == TTokenConsumptionType.ETokenNotConsumed)
{
// Check whether we're inside a conditional expression skip state.
bool allowedToOffer = Parser.ConditionalExpressionValue;
if (allowedToOffer)
{
ret = base.OfferToken(aToken);
}
}
//
return(ret);
}
public override void RemoveChild(SymParserWorker aWorker)
{
base.RemoveChild(aWorker);
RemoveSelf();
}
