public SqlUnaryPrefixOperatorExpression(OperatorDef op, SymbolPosition[] unaryMarks, SqlExpression inner)
{
Operator = op;
Inner = inner;
UnaryMarks = unaryMarks;
if (unaryMarks.Length != op.Tokens.Length)
{
throw new InternalError("DAE-00049 operator token count mitchmatch");
}
Inner.Parent = this;
}
public SqlBinaryOperatorExpression(SqlExpression left, OperatorDef op, SymbolPosition[] binaryMarks, SqlExpression right)
{
Operator = op;
Left = left;
Right = right;
BinaryMarks = binaryMarks;
if (binaryMarks.Length != op.Tokens.Length)
{
throw new InternalError("DAE-00050 operator token count mitchmatch");
}
Left.Parent = this;
Right.Parent = this;
}
public OperatorListOperatorGroup(params string[] operators)
{
List <OperatorDef> ops = new List <OperatorDef>();
foreach (var op in operators)
{
OperatorDef od = new OperatorDef();
od.Tokens = op.Split(' ');
od.IsSymbol = !Char.IsLetter(op[0]);
ops.Add(od);
}
Operators = ops.ToArray();
}
private SymbolPosition[] TestOperator(OperatorDef op)
{
int steps = 0;
List <SymbolPosition> res = new List <SymbolPosition>();
while (steps < op.Tokens.Length && op.AcceptTokenType(Current) && CurrentData.ToUpper() == op.Tokens[steps].ToUpper())
{
res.Add(CurrentOriginal);
steps++;
NextToken();
}
if (op.Tokens.Length == steps)
{
return(res.ToArray());
}
GoBack(steps);
return(null);
}
