public static bool TryParse(IParser parser, out MemberAccessNameExpressionPiece node)
{
node = null;
bool result = false;
if (parser.PeekToken(TokenKind.Dot))
{
StringBuilder sb = new StringBuilder();
sb.Append(".");
result = true;
node = new MemberAccessNameExpressionPiece();
parser.NextToken();
node.StartIndex = parser.Token.Span.Start;
if (parser.PeekToken(TokenKind.Multiply) || parser.PeekToken(TokenCategory.Identifier) || parser.PeekToken(TokenCategory.Keyword))
{
sb.Append(parser.NextToken().Value.ToString());
node.Text = sb.ToString();
node.EndIndex = parser.Token.Span.End;
node.IsComplete = true;
}
else
{
parser.ReportSyntaxError("Invalid token found in member access.");
}
}
return(result);
}
public static bool TryParseNode(IParser parser, out NameExpression node, TokenKind breakToken = TokenKind.EndOfFile)
{
node = null;
bool result = false;
if (parser.PeekToken(TokenCategory.Identifier) || parser.PeekToken(TokenCategory.Keyword))
{
result = true;
node = new NameExpression();
parser.NextToken();
node.StartIndex = parser.Token.Span.Start;
node._firstPiece = parser.Token.Token.Value.ToString();
StringBuilder sb = new StringBuilder(node._firstPiece);
node.EndIndex = parser.Token.Span.End;
while (true)
{
if (breakToken != TokenKind.EndOfFile &&
parser.PeekToken(breakToken))
{
break;
}
MemberAccessNameExpressionPiece memberAccess;
if (MemberAccessNameExpressionPiece.TryParse(parser, out memberAccess) && memberAccess != null)
{
node.Children.Add(memberAccess.StartIndex, memberAccess);
node.EndIndex = memberAccess.EndIndex;
node.IsComplete = true;
sb.Append(memberAccess.ToString());
}
else if (parser.PeekToken(TokenKind.Ampersand))
{
parser.NextToken();
sb.Append("@");
if (parser.PeekToken(TokenCategory.Identifier) ||
parser.PeekToken(TokenCategory.Keyword))
{
sb.Append(parser.NextToken().Value.ToString());
}
}
else
{
break;
}
}
node.Name = sb.ToString();
}
return(result);
}