public IVersionRequirement RestrictTo(IVersionRequirement other)
{
if (other is NoRequirement || other is MinimalVersionRequirement || other is LoseVersionRequirement)
{
return(other.RestrictTo(this));
}
else if (other is BoundedVersionRequirement)
{
if (IsMetBy((other as BoundedVersionRequirement).lowerBound))
{
return(other);
}
if ((other as BoundedVersionRequirement).IsMetBy(lowerBound))
{
return(this);
}
}
else if (other is ExactVersionRequirement)
{
if (IsMetBy((other as ExactVersionRequirement).expected))
{
return(other);
}
}
throw new IncompatibleRequirementException(this, other);
}
public IVersionRequirement RestrictTo(IVersionRequirement other)
{
if (other is NoRequirement)
{
return(other.RestrictTo(this));
}
else if (other is MinimalVersionRequirement)
{
return(minimal >= (other as MinimalVersionRequirement).minimal ? this : other);
}
else if (other is LoseVersionRequirement)
{
if (minimal <= (other as LoseVersionRequirement).stub)
{
return(other);
}
}
else if (other is BoundedVersionRequirement)
{
if (minimal <= (other as BoundedVersionRequirement).lowerBound)
{
return(other);
}
}
else if (other is ExactVersionRequirement)
{
if (minimal <= (other as ExactVersionRequirement).expected)
{
return(other);
}
}
throw new IncompatibleRequirementException(this, other);
}
public IVersionRequirement RestrictTo(IVersionRequirement other)
{
if (other is NoRequirement)
{
return(other.RestrictTo(this));
}
else if (other is MinimalVersionRequirement)
{
return(minimal >= (other as MinimalVersionRequirement).minimal ? this : other);
}
else if (other is RangeVersionRequirement)
{
if (minimal <= (other as RangeVersionRequirement).lower)
{
return(other);
}
if (other.IsMetBy(minimal))
{
return(new RangeVersionRequirement(
minimal,
(other as RangeVersionRequirement).upper));
}
}
else if (other is ExactVersionRequirement)
{
if (minimal <= (other as ExactVersionRequirement).expected)
{
return(other);
}
}
throw new IncompatibleRequirementException(this, other);
}
public virtual IVersionRequirement RestrictTo(IVersionRequirement other)
{
if (other is NoRequirement || other is MinimalVersionRequirement)
{
return(other.RestrictTo(this));
}
else if (other is RangeVersionRequirement)
{
var otherRange = other as RangeVersionRequirement;
if (lower == otherRange.lower && upper == otherRange.upper)
{
return(this);
}
// self include other?
if (IsMetBy(otherRange.lower) && IsMetBy(otherRange.upper))
{
return(other);
}
// other include self?
if (other.IsMetBy(lower) && other.IsMetBy(upper))
{
return(this);
}
// They are overlapping or not intersecting
// overlap top?
if (IsMetBy(otherRange.lower) && other.IsMetBy(upper))
{
return(new RangeVersionRequirement(
otherRange.lower,
this.upper
));
}
// overlap bottom?
if (IsMetBy(otherRange.upper) && other.IsMetBy(lower))
{
return(new RangeVersionRequirement(
this.lower,
otherRange.upper
));
}
}
else if (other is ExactVersionRequirement)
{
if (IsMetBy((other as ExactVersionRequirement).expected))
{
return(other);
}
}
throw new IncompatibleRequirementException(this, other);
}
public IVersionRequirement RestrictTo(IVersionRequirement other)
{
if (other is ExactVersionRequirement)
{
if (IsMetBy((other as ExactVersionRequirement).expected))
{
return(this);
}
}
else
{
return(other.RestrictTo(this));
}
throw new IncompatibleRequirementException(this, other);
}
public void ResrictToNoRequirement()
{
NoRequirement noRequirement = new NoRequirement();
Assert.AreSame(requirement.RestrictTo(noRequirement), requirement);
}
public void RestrictToItself()
{
Assert.AreSame(requirement.RestrictTo(requirement), requirement);
}