/// <exception cref = "FormatException">
/// <paramref name = "caseRoute" /> doesn't match any case in <paramref name = "unionInfo" />.
/// </exception>
public static IUnionCaseInfo GetNestedCaseInfo(this IUnionInfo unionInfo, Route caseRoute)
{
// ReSharper disable once SuggestVarOrType_SimpleTypes
var caseRouteEnumerator = caseRoute.nodes.GetEnumerator();
if (!caseRouteEnumerator.MoveNext())
{
throw new FormatException("Route is empty.");
}
else
{
var currentUnionInfo = unionInfo;
while (true)
{
var caseName = caseRouteEnumerator.Current;
var hasNextCaseInfo = currentUnionInfo.caseInfosByNames.TryGetValue(caseName, out var nextCaseInfo);
if (!hasNextCaseInfo)
{
var msg =
$"Route '{caseRoute}' doesn't match any case in {unionInfo}: "
+ $"'{currentUnionInfo}' doesn't contain '{caseName}'.";
throw new FormatException(msg);
}
else if (!caseRouteEnumerator.MoveNext())
{
return(nextCaseInfo);
}
else
{
if (nextCaseInfo.asUnionInfo is {} nextUnionInfo)
{
currentUnionInfo = nextUnionInfo;
}
public UnionCaseInfo(IDataTypeInfo dataTypeInfo, IUnionInfo declaringUnionInfo)
{
var t = dataTypeInfo.dataType;
this.dataTypeInfo = dataTypeInfo;
this.declaringUnionInfo = declaringUnionInfo;
name = t.MayGetCompanion <IUnionCaseNameProvider>()?.GetUnionCaseName(t) ?? t.Name;
}
public UnionJsonConverter(IUnionInfo unionInfo) => this.unionInfo = unionInfo;
