private CallExpressionNode Call(IdentifierNode ident)
{
CallExpressionNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
Accept(Token.TokenType.LeftParen);
ArgumentSequenceNode itsArgs = Arguments();
Accept(Token.TokenType.RightParen);
itsAST = new CallExpressionNode(ident, itsArgs, itsPos);
return(itsAST);
}
private ArgumentSequenceNode ParseArguments()
{
ArgumentSequenceNode itsAST;
SourceCodePosition itsPos = _currentToken.SourcePosition;
ExpressionArgumentNode itsArg = ParseArgument();
if (_currentToken.Type == Token.TokenType.Comma)
{
Accept(Token.TokenType.Comma);
ArgumentSequenceNode itsNextArgs = ParseArguments();
itsAST = new MultipleArgumentSequenceNode(itsArg, itsNextArgs, itsPos);
}
else
{
itsAST = new SingleArgumentSequenceNode(itsArg, itsPos);
}
return(itsAST);
}
public CallExpressionNode(IdentifierNode ident, ArgumentSequenceNode args, SourceCodePosition pos)
: base(pos)
{
Identifier = ident;
Arguments = args;
}