public SqlExpression Expr(string ex, SqlColumn col) { return new SqlExpressionData(ex, 4) { left = this, right = col }; }
protected virtual Sql.Builder Output(Sql.Builder sb)
{
string s = SQL;
char quot = sb.Context.GetMarker(false);
SqlColumn scds = null;
int bp = 0, cp = 1;
while (cp < s.Length)
{
char ch = s[cp];
switch (ch)
{
case '#':
sb.Append(s, bp, cp - 1);
for (ch = s[cp - 1], bp = ++cp; cp < s.Length; cp++) if (s[cp] == '#') break;
if (cp == s.Length) throw new NotSupportedException("incomplete markup section");
int np = bp; while (s[np] <= ' ') np++;
//bp = ++cp;
int ep = np, xp = cp;
while (ep < cp) if (s[ep] != ':') ep++; else { xp = ep + 1; break; }
while (s[xp] <= ' ') xp++;
while (ep > np && s[ep - 1] <= ' ') ep--;
string pname = ep > np ? s.Substring(np, ep - np) : null;
ep = cp; while (ep > np && s[ep - 1] <= ' ') ep--;
string opts = ep > xp ? s.Substring(xp, ep - xp) : null;
if (scds == null) scds = new SqlColumn();
scds.Parse(opts);
sb.AppendParam(pname, scds);
bp = ++cp; continue;
case '-': // singleline comment
if (++cp == s.Length || s[cp] != '-') break;
while (++cp < s.Length)
if (s[cp] == '\n') { cp += 2; break; }
continue;
case '/': // muiltiline comment, may contain useful info, like hints
if (++cp == s.Length || s[cp] != '*') break;
while (++cp < s.Length)
if (s[cp] == '*' && (cp + 1 < s.Length) && s[cp + 1] == '/') { cp += 2; break; }
continue;
default:
if (ch != quot) break;
while (++cp < s.Length && s[cp] != quot) ;
break;
}
cp++;
}
sb.Append(s, bp, cp);
return sb;
}
public SqlExpression Eq(SqlColumn col) { return new SqlExpressionData("=", 5) { left = this, right = col }; }
public SqlBind Add(SqlColumn col, FieldDescriptor desc)
{
SqlBind bind = new SqlBind(col, desc);
if (_last == null) _list = bind;
else _last.Next = bind;
return _last = bind;
}
public SqlBind Add(SqlColumn col, string name)
{
FieldDescriptor desc = _desc.Find(name);
if (desc == null) throw new KeyNotFoundException(name);
return Add(col, desc);
}
public SqlBind(SqlColumn col, FieldDescriptor desc) { _column = col; _field = desc; }
public virtual void AppendParam(string name, SqlColumn sc)
{
// match parameter marker to message field.
var ds = desc.Find(name);
if (ds == null)
if (!desc.IsBoxType)
{
errors.Add(new SqlError("param name not found"));
return;
}
else ds = desc.Fields[0];
//AppendParam(new SqlBind(sc, ds));
}
