private ISqlNode ParseBooleanExpression5(ITokenizer t)
{
// <BooleanExpression3> ("AND" | "OR") <BooleanExpression3>
var left = ParseBooleanExpression4(t);
while (t.Peek().IsKeyword("AND", "OR"))
{
var op = new SqlOperatorNode(t.GetNext());
var right = ParseBooleanExpression4(t);
left = new SqlInfixOperationNode
{
Location = op.Location,
Left = left,
Operator = op,
Right = right
};
}
return(left);
}
private ISqlNode ParseScalarExpression3(ITokenizer t)
{
// Operators with + - precidence
// <Expression2> (<op> <Expression2>)+
var left = ParseScalarExpression2(t);
while (t.Peek().IsSymbol("+", "-", "&", "^", "|"))
{
var op = new SqlOperatorNode(t.GetNext());
var right = ParseScalarExpression2(t);
left = new SqlInfixOperationNode
{
Location = op.Location,
Left = left,
Operator = op,
Right = right
};
}
return(left);
}
public ISqlNode VisitOperator(SqlOperatorNode n)
{
Append(n.Operator);
return(n);
}
public virtual ISqlNode VisitOperator(SqlOperatorNode n) => n;
public override ISqlNode VisitOperator(SqlOperatorNode n)
{
_result.AssertIsNotNullOrEmpty(n, nameof(n.Operator), n.Operator);
return(base.VisitOperator(n));
}
