/// <summary>
/// Validates that a reference can be added.
/// </summary>
/// <returns>Success if the reference can be added.</returns>
internal virtual AddReferenceCheckResult CheckIfCanAddReference()
{
// When this method is called this refererence has not yet been added to the hierarchy, only instantiated.
ReferenceNode existingNode;
if (this.IsAlreadyAdded(out existingNode))
{
return(AddReferenceCheckResult.Failed());
}
return(AddReferenceCheckResult.Success);
}
/// <summary>
/// Checks if a project reference can be added to the hierarchy. It calls base to see if the reference is not already there, then checks for circular references.
/// </summary>
/// <param name="errorHandler">The error handler delegate to return</param>
/// <returns></returns>
internal /*protected, but public for FSharp.Project.dll*/ override AddReferenceCheckResult CheckIfCanAddReference()
{
// When this method is called this refererence has not yet been added to the hierarchy, only instantiated.
var checkResult = base.CheckIfCanAddReference();
if (!checkResult.Ok)
{
return(checkResult);
}
if (this.IsThisProjectReferenceInCycle())
{
return(AddReferenceCheckResult.Failed(
String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.ProjectContainsCircularReferences, CultureInfo.CurrentUICulture), this.referencedProjectName)
));
}
switch (CheckFrameworksCompatibility(ProjectMgr, referencedProjectGuid))
{
case FrameworkCompatibility.Ok:
return(AddReferenceCheckResult.Success);
case FrameworkCompatibility.HigherVersion:
// if project tries to target another project with higher framework version - allow to do this - we'll set up error later in BindReferenceData
return(AddReferenceCheckResult.Success);
case FrameworkCompatibility.DifferentFamily:
var myFrameworkName = GetProjectTargetFrameworkName(ProjectMgr);
var otherFrameworkName = GetProjectTargetFrameworkName(ProjectMgr.Site, referencedProjectGuid);
var errorMessage = GetDifferentFamilyErrorMessage(myFrameworkName, referencedProjectName, otherFrameworkName);
return(AddReferenceCheckResult.Failed(errorMessage));
default:
System.Diagnostics.Debug.Assert(false);
throw new InvalidOperationException("impossible");
}
}
