/// <summary>
/// Exports the specified component to a temporary file, loads, and then parses the exported file.
/// </summary>
/// <param name="component"></param>
/// <param name="token"></param>
/// <param name="stream"></param>
public IDictionary <Tuple <string, DeclarationType>, Attributes> Parse(IVBComponent component, CancellationToken token, out ITokenStream stream, out IParseTree tree)
{
token.ThrowIfCancellationRequested();
var path = _exporter.Export(component);
if (!File.Exists(path))
{
// a document component without any code wouldn't be exported (file would be empty anyway).
stream = null;
tree = null;
return(new Dictionary <Tuple <string, DeclarationType>, Attributes>());
}
var code = File.ReadAllText(path);
try
{
File.Delete(path);
}
catch
{
// Meh.
}
token.ThrowIfCancellationRequested();
var type = component.Type == ComponentType.StandardModule
? DeclarationType.ProceduralModule
: DeclarationType.ClassModule;
var tokenStreamProvider = new SimpleVBAModuleTokenStreamProvider();
var tokens = tokenStreamProvider.Tokens(code);
var preprocessor = _preprocessorFactory();
preprocessor.PreprocessTokenStream(component.Name, tokens, token);
var listener = new AttributeListener(Tuple.Create(component.Name, type));
// parse tree isn't usable for declarations because
// line numbers are offset due to module header and attributes
// (these don't show up in the VBE, that's why we're parsing an exported file)
tree = new VBAModuleParser().Parse(component.Name, tokens, new IParseTreeListener[] { listener }, new ExceptionErrorListener(), out stream);
token.ThrowIfCancellationRequested();
return(listener.Attributes);
}