/// <summary>
/// Create a new binary argument node.
/// </summary>
/// <param name="parent">Parent message node that defines this message argument node.</param>
protected internal BinaryArgumentNode(BinaryMessageNode parent)
{
#if DEBUG
if (parent == null)
throw new ArgumentNullException("parent");
#endif
this.Parent = parent;
}
/// <summary>
/// Initializes the node after being parsed by the parser.
/// </summary>
/// <param name="message">The first (current) message in the message sequence.</param>
/// <param name="nextMessage">Optional sequence of messages that may follow this message.</param>
protected internal void SetContents(BinaryMessageNode message, BinaryMessageSequenceNode nextMessage)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
this.Message = message;
this.NextMessage = nextMessage; // Null is OK.
}
/// <summary>
/// Create a new binary argument node.
/// </summary>
/// <param name="parent">Parent message node that defines this message argument node.</param>
protected internal BinaryArgumentNode(BinaryMessageNode parent)
{
#if DEBUG
if (parent == null)
{
throw new ArgumentNullException("parent");
}
#endif
this.Parent = parent;
}
/// <summary>
/// Initializes the node after being parsed by the parser.
/// </summary>
/// <param name="message">The first (current) message in the message sequence.</param>
/// <param name="nextMessage">Optional sequence of messages that may follow this message.</param>
protected internal void SetContents(BinaryMessageNode message, BinaryKeywordOrKeywordMessageSequenceNode nextMessage)
{
if (message == null)
throw new ArgumentNullException("message");
this.Message = message;
this.NextMessage = nextMessage; // null is OK
}
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;
}
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;
}
