public ComparisonExpression(FieldValue left, IComparisonOperand right, ComparisonOperator
op)
{
if (left == null || right == null || op == null)
{
throw new ArgumentNullException();
}
_left = left;
_right = right;
_op = op;
}
private void Constrain(ComparisonOperator op)
{
this._enclosing.Invoke(this._enclosing.constrainRef);
if (op.Equals(ComparisonOperator.ValueEquality))
{
return;
}
if (op.Equals(ComparisonOperator.ReferenceEquality))
{
this._enclosing.Invoke(this._enclosing.identityRef);
return;
}
if (op.Equals(ComparisonOperator.Greater))
{
this._enclosing.Invoke(this._enclosing.greaterRef);
return;
}
if (op.Equals(ComparisonOperator.Smaller))
{
this._enclosing.Invoke(this._enclosing.smallerRef);
return;
}
if (op.Equals(ComparisonOperator.Contains))
{
this._enclosing.Invoke(this._enclosing.containsRef);
return;
}
if (op.Equals(ComparisonOperator.StartsWith))
{
this._enclosing.Ldc(1);
this._enclosing.Invoke(this._enclosing.startsWithRef);
return;
}
if (op.Equals(ComparisonOperator.EndsWith))
{
this._enclosing.Ldc(1);
this._enclosing.Invoke(this._enclosing.endsWithRef);
return;
}
throw new Exception("Cannot interpret constraint: " + op);
}