public static ContOp?reverse(this ContOp match)
{
switch (match)
{
case ContOp.IN:
return(ContOp.HAS);
case ContOp.HAS:
return(ContOp.IN);
case ContOp.NOT_IN:
return(ContOp.NOT_HAS);
case ContOp.NOT_HAS:
return(ContOp.NOT_IN);
default:
return(null);
}
}
private MatchOp getMatchOp(Context context, IType fieldType, IType valueType, ContOp oper, bool reverse)
{
if (reverse)
{
ContOp?reversed = oper.reverse();
if (!reversed.HasValue)
{
throw new SyntaxError("Cannot reverse " + this.oper);
}
return(getMatchOp(context, valueType, fieldType, reversed.Value, false));
}
if ((fieldType == TextType.Instance || valueType == CharacterType.Instance) &&
(valueType == TextType.Instance || valueType == CharacterType.Instance))
{
switch (oper)
{
case ContOp.HAS:
case ContOp.NOT_HAS:
return(MatchOp.CONTAINS);
}
}
if (valueType is ContainerType)
{
switch (oper)
{
case ContOp.IN:
case ContOp.NOT_IN:
return(MatchOp.IN);
}
}
if (fieldType is ContainerType)
{
switch (oper)
{
case ContOp.HAS:
case ContOp.NOT_HAS:
return(MatchOp.HAS);
}
}
throw new SyntaxError("Unsupported operator: " + oper.ToString());
}
public ContainsExpression(IExpression left, ContOp oper, IExpression right)
{
this.left = left;
this.oper = oper;
this.right = right;
}
