public StepFile ReadFile()
{
var fileSyntax = _lexer.LexFileSyntax();
foreach (var headerMacro in fileSyntax.Header.Macros)
{
ApplyHeaderMacro(headerMacro);
}
var itemMap = new Dictionary <int, StepRepresentationItem>();
var binder = new StepBinder(itemMap);
StepRepresentationItem.UnsupportedItemTypes.Clear();
foreach (var itemInstance in fileSyntax.Data.ItemInstances)
{
if (itemMap.ContainsKey(itemInstance.Id))
{
throw new StepReadException("Duplicate item instance", itemInstance.Line, itemInstance.Column);
}
var item = StepRepresentationItem.FromTypedParameter(binder, itemInstance.SimpleItemInstance, itemInstance.Id);
if (item != null)
{
itemMap.Add(itemInstance.Id, item);
_file.Items.Add(item);
}
}
binder.BindRemainingValues();
return(_file);
}
public void BindValue(StepSyntax syntax, Action <StepBoundItem> bindAction)
{
if (syntax is StepSimpleItemSyntax)
{
var typedParameter = (StepSimpleItemSyntax)syntax;
var item = StepRepresentationItem.FromTypedParameter(this, typedParameter);
var boundItem = new StepBoundItem(item, syntax);
bindAction(boundItem);
}
else if (syntax is StepEntityInstanceReferenceSyntax)
{
var itemInstance = (StepEntityInstanceReferenceSyntax)syntax;
if (_itemMap.ContainsKey(itemInstance.Id))
{
// pointer already defined, bind immediately
var boundItem = new StepBoundItem(_itemMap[itemInstance.Id], syntax);
bindAction(boundItem);
}
else
{
// not already defined, save it for later
if (!_unboundPointers.ContainsKey(itemInstance.Id))
{
_unboundPointers.Add(itemInstance.Id, new List <Tuple <StepSyntax, Action <StepBoundItem> > >());
}
_unboundPointers[itemInstance.Id].Add(Tuple.Create(syntax, bindAction));
}
}
else if (syntax is StepAutoSyntax)
{
bindAction(StepBoundItem.AutoItem(syntax));
}
else
{
throw new StepReadException("Unable to bind pointer, this should be unreachable", syntax.Line, syntax.Column);
}
}