public override void ParseInside(ExpressionParser parser)
{
var collection = parser.Collection;
collection.GotoNextMust();
var lex = collection.GotoNextMust();
ExpressionParser tonode = new ExpressionParser(collection);
tonode.Parse();
AddChild(tonode.Single());
lex = collection.CurrentLexem();
if (lex.LexemType != LexType.Command || lex.LexemText.ToLower() != "as")
{
collection.ErrorWaitKeyWord("AS", collection.CurrentOrLast());
}
lex = collection.GotoNextMust();
var ex = ExactType.Parse(collection);
if (ex == null)
{
collection.Error("Type is unknow", collection.CurrentOrLast());
}
ToType = ex.Value;
lex = collection.GotoNextMust();
if (!lex.IsSkobraClose())
{
collection.Error("not closed function", collection.CurrentOrLast());
}
collection.GotoNext();
}
public static AlterColumnInfo ReadColumnInfo(LexemCollection collection)
{
var lex = collection.CurrentLexem();
var col = CommonParserFunc.ReadColumnNameOnly(collection);
AlterColumnInfo cd = new AlterColumnInfo();
cd.Name = col;
lex = collection.GotoNextMust();
if (lex.LexemType != LexType.Command)
{
collection.ErrorUnexpected(collection.CurrentLexem());
}
ExactType?tp = ExactType.Parse(collection);
if (tp == null)
{
collection.Error("Unknow data type", collection.CurrentOrLast());
}
cd.Type = tp.Value;
lex = collection.GotoNext();
while (lex != null && lex.LexemType != LexType.Zpt && !lex.IsSkobraClose())
{
string s1 = lex.LexemText.ToLower();
if (ParserUtils.ParseCommandPhrase(collection, "not null"))
{
cd.Nullable = false;
}
else if (ParserUtils.ParseCommandPhrase(collection, "null"))
{
cd.Nullable = true;
}
else if (ParserUtils.ParseCommandPhrase(collection, "primary key"))
{
cd.PrimaryKey = true;
}
else if (lex.LexemType == LexType.Command && (s1 == "auto_increment"))
{
cd.AutoIncrement = true;
}
else
{
collection.ErrorUnexpected(collection.CurrentOrLast());
}
lex = collection.GotoNext();
}
return(cd);
}
