protected virtual BinaryArgumentNode ParseBinaryArgument(BinaryMessageNode parent, Token token)
{
// PARSE: <binary argument> ::= <primary> <unary message>*
BinaryArgumentNode result = new BinaryArgumentNode(parent);
IPrimaryNode primary = this.ParsePrimary(result, token);
if (primary == null)
{
this.ReportParserError(result, SemanticErrors.MissingPrimary, token);
return(result);
}
token = this.GetNextTokenxx(Preference.Default);
UnaryMessageSequenceNode messages = null;
if (token is IdentifierToken)
{
// <unary message>*
messages = this.ParseUnaryMessageSequence(result, (IdentifierToken)token);
}
else
{
this.ResidueToken = token;
}
result.SetContents(primary, messages);
return(result);
}
/// <summary>
/// Visits the Binary Message Argument node.
/// </summary>
/// <param name="node">The node to visit.</param>
public virtual TResult VisitBinaryArgument(BinaryArgumentNode node)
{
if (node.Primary != null)
{
node.Primary.Accept(this);
}
if (node.Messages != null)
{
node.Messages.Accept(this);
}
return(default(TResult)); // The default naive implementation
}
protected virtual BinaryMessageNode ParseBinaryMessage(MessageSequenceBase parent, BinarySelectorToken selector)
{
// PARSE: <binary message> ::= binarySelector <binary argument>
BinaryMessageNode result = new BinaryMessageNode(parent, selector);
Token token = this.GetNextTokenxx(Preference.NegativeSign);
// Parse the binary argument ... ParseBinaryArgument() does not fail and reports errors self.
BinaryArgumentNode argument = this.ParseBinaryArgument(result, token);
if (argument != null)
{
result.SetContents(argument);
}
return(result);
}
/// <summary>
/// Visits the Binary Message Argument node.
/// </summary>
/// <param name="node">The node to visit.</param>
public override bool VisitBinaryArgument(BinaryArgumentNode node)
{
if (node.Parent == null)
{
return(false);
}
if ((node.Primary == null) || !node.Primary.Accept(this))
{
return(false);
}
if ((node.Messages != null) && !node.Messages.Accept(this))
{
return(false);
}
return(true);
}
/// <summary>
/// Visits the Binary Message Argument node.
/// </summary>
/// <param name="node">The node to visit.</param>
public virtual TResult VisitBinaryArgument(BinaryArgumentNode node)
{
throw new NotImplementedException();
}
