protected virtual KeywordMessageSequenceNode ParseKeywordMessageSequence(IMessageSequenceParentNode parent, KeywordToken token)
{
// PARSE: <keyword message>
KeywordMessageSequenceNode result = new KeywordMessageSequenceNode(parent);
// NB: ParseKeywordMessage() cannot fail, so we don't check result
KeywordMessageNode message = this.ParseKeywordMessage(result, token);
result.SetContents(message);
return result;
}
// Initializes the node after being parsed by the parser.
protected internal void SetContents(BinarySelectorToken openingDelimiter, BinarySelectorToken closingDelimiter,
KeywordToken apiConvention, IEnumerable<IPrimitiveCallParameterToken> parameters)
{
this.OpeningDelimiter = openingDelimiter;
this.ClosingDelimiter = closingDelimiter;
this.ApiConvention = apiConvention;
this.ApiParameters.Clear();
foreach (IPrimitiveCallParameterToken param in parameters)
this.ApiParameters.Add(param);
}
protected virtual KeywordMessageNode ParseKeywordMessage(MessageSequenceNode parent, KeywordToken selector)
{
// PARSE: <keyword message> ::= (keyword <keyword argument> )+
KeywordMessageNode result = new KeywordMessageNode(parent);
List<KeywordToken> selectorTokens = new List<KeywordToken>();
List<KeywordArgumentNode> arguments = new List<KeywordArgumentNode>();
Token token = this.GetNextTokenxx(Preference.NegativeSign);
selectorTokens.Add(selector);
arguments.Add(this.ParseKeywordArgument(result, token)); // NB: ParseKeywordArgument() may not fail.
token = this.GetNextTokenxx(Preference.Default);
while (token is KeywordToken)
{
selectorTokens.Add((KeywordToken)token);
token = this.GetNextTokenxx(Preference.NegativeSign);
arguments.Add(this.ParseKeywordArgument(result, token)); // NB: ParseKeywordArgument() may not fail.
token = this.GetNextTokenxx(Preference.Default);
}
result.SetContents(selectorTokens, arguments);
this.ResidueToken = token;
return result;
}