static bool P_TryParse(string metadataPathName, out string validationMessage, out string parsedValue, out MetadataName[] parsedComponents)
{
if (!(metadataPathName is null))
{
if (P_TryGetFromCache(metadataPathName, out var fromCacheInstance))
{
validationMessage = null;
parsedValue = fromCacheInstance._value;
parsedComponents = fromCacheInstance._components;
return(true);
}
}
//
if (IsValid(metadataPathName, out validationMessage))
{
var components = metadataPathName.Split(ComponentDelimiter);
if (components.Length > MaxComponentCount)
{
parsedValue = null;
parsedComponents = null;
validationMessage = FormatXResource(typeof(InvalidMetadataNameException), "PathNameContainsTooManyComponents", metadataPathName, components.Length, MaxComponentCount);
return(false);
}
parsedValue = metadataPathName;
parsedComponents = new MetadataName[components.Length];
for (var i = 0; i < components.Length; ++i)
{
parsedComponents[i] = MetadataName.CreateUnsafe(components[i]);
}
return(true);
}
else
{
parsedValue = null;
parsedComponents = null;
return(false);
}
}
protected MetadataBase(MetadataName name)
{
_name = name is null ? null : new P_Name(name: name, isAutoName: false);
//
P_Initialize(resetGuid: true);
}
public bool Resolve(IMetadata @base, IMetadataReference reference, out IMetadata metadata)
{
@base.EnsureNotNull(nameof(@base));
var pathNameReference =
reference
.EnsureNotNull(nameof(reference))
.EnsureOfType <IMetadataReference, IMetadataPathNameReference>()
.Value;
//
var requiredMetadataType = pathNameReference.TargetMetadataType;
var name = pathNameReference.Name;
var firstNameComponent = true;
var currentSearchPlace = @base;
var locMetadata = default(IMetadata);
foreach (var currentComponentName in name.Components)
{
if (firstNameComponent)
{
locMetadata =
currentSearchPlace
.Sequence()
.Concat(currentSearchPlace.Parent.Sequence())
.Concat(currentSearchPlace.Siblings)
.Concat(currentSearchPlace.Children)
.Concat(currentSearchPlace.Ancestors.Skip(1))
.Where(i => MetadataName.Equals(i?.Name, currentComponentName))
.FirstOrDefault();
firstNameComponent = false;
}
else
{
locMetadata =
currentSearchPlace
.Children
.Where(i => MetadataName.Equals(i.Name, currentComponentName))
.FirstOrDefault();
}
if (locMetadata == null)
{
break;
}
else
{
currentSearchPlace = locMetadata;
}
}
if (locMetadata == null)
{
metadata = null;
return(false);
}
else if (requiredMetadataType.IsAssignableFrom(locMetadata.GetType()))
{
metadata = locMetadata;
return(true);
}
else
{
throw new MetadataNotCompliantReferenceException(reference, locMetadata);
}
}
public Namespace(MetadataName name)
: base(name)
{
}
