public override ISqlNode VisitDataType(SqlDataTypeNode n)
{
_result.AssertNotNull(n, nameof(n.DataType), n.DataType);
if (n.Size == null)
{
}
else if (n.Size is SqlKeywordNode isMax)
{
_result.AssertIsValue(n, nameof(n.Size), isMax.Keyword, "MAX");
}
else if (n.Size is SqlNumberNode asNumber)
{
_result.AssertIsPositiveNumber(n, nameof(n.Size), asNumber.Numeric);
}
else if (n.Size is SqlListNode <SqlNumberNode> asList)
{
_result.AssertIsNotEmpty(n, nameof(n.Size), asList);
asList.Select((i, x) => _result.AssertIsPositiveNumber(asList, x.ToString(), i.Numeric)).All(x => x);
}
else
{
_result.UnexpectedNodeType(n, nameof(n.Size), n.Size);
}
return(base.VisitDataType(n));
}
public virtual ISqlNode VisitDataType(SqlDataTypeNode n)
{
var d = Visit(n.DataType) as SqlKeywordNode;
var s = Visit(n.Size);
return(n.Update(d, s));
}
public ISqlNode VisitDataType(SqlDataTypeNode n)
{
Visit(n.DataType);
if (n.Size != null)
{
Append("(", n.Size, ")");
}
return(n);
}
private SqlDataTypeNode ParseDataType(ITokenizer t)
{
// <Keyword> ("(" ("MAX" | <SizeList>)? ")")?
var next = t.GetNext();
// TODO: Array types
// TODO: Should we add TABLE declaration parsing?
if (next.IsKeyword("TABLE"))
{
return(null);
}
var dataType = new SqlDataTypeNode
{
Location = next.Location,
DataType = new SqlKeywordNode(next),
};
if (t.Peek().IsSymbol("("))
{
t.GetNext();
var lookahead = t.Peek();
if (lookahead.IsKeyword("MAX"))
{
dataType.Size = new SqlKeywordNode(t.GetNext());
}
else if (lookahead.IsType(SqlTokenType.Number))
{
dataType.Size = ParseList(t, ParseNumber);
}
else
{
throw ParsingException.CouldNotParseRule(nameof(ParseDataType), lookahead);
}
t.Expect(SqlTokenType.Symbol, ")");
}
return(dataType);
}
