protected void GenerateCodeForWorkflow(IFlowSharpCodeService codeService, StringBuilder sb, GraphicElement el, int indent)
{
string strIndent = new String('\t', indent);
while (el != null)
{
if ((el is IIfBox))
{
// True clause
var elTrue = codeService.GetTruePathFirstShape((IIfBox)el);
// False clause
var elFalse = codeService.GetFalsePathFirstShape((IIfBox)el);
if (elTrue != null)
{
sb.AppendLine(strIndent + "bool " + el.Text.ToLower() + " = workflow." + el.Text + "(packet);");
sb.AppendLine();
sb.AppendLine(strIndent + "if (" + el.Text.ToLower() + ")");
sb.AppendLine(strIndent + "{");
GenerateCodeForWorkflow(codeService, sb, elTrue, indent + 1);
sb.AppendLine(strIndent + "}");
if (elFalse != null)
{
sb.AppendLine(strIndent + "else");
sb.AppendLine(strIndent + "{");
GenerateCodeForWorkflow(codeService, sb, elFalse, indent + 1);
sb.AppendLine(strIndent + "}");
}
}
else if (elFalse != null)
{
sb.AppendLine(strIndent + "bool " + el.Text.ToLower() + " = workflow." + el.Text + "(packet);");
sb.AppendLine();
sb.AppendLine(strIndent + "if (!" + el.Text.ToLower() + ")");
sb.AppendLine(strIndent + "{");
GenerateCodeForWorkflow(codeService, sb, elFalse, indent + 1);
sb.AppendLine(strIndent + "}");
}
// TODO: How to join back up with workflows that rejoin from if-then-else?
break;
}
else
{
sb.AppendLine(strIndent + "workflow." + el.Text + "(packet);");
}
el = codeService.NextElementInWorkflow(el);
}
}
// ===================================================
// DRAKON workflow
public GraphicElement ParseDrakonWorkflow(DrakonCodeTree dcg, IFlowSharpCodeService codeService, BaseController canvasController, GraphicElement el, bool inCondition = false)
{
while (el != null)
{
// If we're in a conditional and we encounter a shape with multiple "merge" connections, then we assume (I think rightly so)
// that this is the end of the conditional branch, and that code should continue at this point outside of the "if-else" statement.
if (inCondition)
{
var connections = el.Connections.Where(c => c.ElementConnectionPoint.Type == GripType.TopMiddle);
if (connections.Count() > 1)
{
return(el);
}
}
// All these if's. Yuck.
if (el is IBeginForLoopBox)
{
var drakonLoop = new DrakonLoop()
{
Code = ParseCode(el)
};
dcg.AddInstruction(drakonLoop);
var nextEl = codeService.NextElementInWorkflow(el);
if (nextEl != null)
{
el = ParseDrakonWorkflow(drakonLoop.LoopInstructions, codeService, canvasController, nextEl);
}
else
{
// TODO: error -- there are no further elements after the beginning for loop box!
ServiceManager.Get <IFlowSharpCodeOutputWindowService>().WriteLine("Error: Drakon start 'for' loop does not have any statements!");
return(el);
}
}
else if (el is IEndForLoopBox)
{
return(el);
}
else if (el is IIfBox)
{
var drakonIf = new DrakonIf()
{
Code = ParseCode(el)
};
dcg.AddInstruction(drakonIf);
var elTrue = codeService.GetTruePathFirstShape((IIfBox)el);
var elFalse = codeService.GetFalsePathFirstShape((IIfBox)el);
if (elTrue != null)
{
ParseDrakonWorkflow(drakonIf.TrueInstructions, codeService, canvasController, elTrue, true);
}
if (elFalse != null)
{
ParseDrakonWorkflow(drakonIf.FalseInstructions, codeService, canvasController, elFalse, true);
}
// dcg.AddInstruction(new DrakonEndIf());
}
else if (el is IOutputBox)
{
dcg.AddInstruction(new DrakonOutput()
{
Code = ParseCode(el)
});
}
else
{
dcg.AddInstruction(new DrakonStatement()
{
Code = ParseCode(el)
});
}
el = codeService.NextElementInWorkflow(el);
}
return(null);
}