/// <summary>
/// Finds the MagicSymbols inside an assembly, and returns an instance of each.
/// </summary>
public IEnumerable <MagicSymbol> FindMagic(AssemblyInfo assm)
{
var result = new MagicSymbol[0];
if (cache.TryGetValue(assm, out result))
{
return(result);
}
this.logger.LogInformation($"Looking for MagicSymbols in {assm.Assembly.FullName}");
// If types from an assembly cannot be loaded, log a warning and continue.
var allMagic = new List <MagicSymbol>();
try
{
var magicTypes = assm.Assembly
.GetTypes()
.Where(t =>
{
if (!t.IsClass && t.IsAbstract)
{
return(false);
}
var matched = t.IsSubclassOf(typeof(MagicSymbol));
this.logger.LogDebug("Class {Class} subclass of MagicSymbol? {Matched}", t.FullName, matched);
return(matched);
});
foreach (var t in magicTypes)
{
try
{
var m = ActivatorUtilities.CreateInstance(services, t) as MagicSymbol;
allMagic.Add(m);
this.logger.LogInformation($"Found MagicSymbols {m.Name} ({t.FullName})");
}
catch (Exception e)
{
this.logger.LogWarning($"Unable to create instance of MagicSymbol {t.FullName}. Magic will not be enabled.\nMessage:{e.Message}");
}
}
}
catch (Exception ex)
{
this.logger.LogWarning(
ex,
"Encountered exception loading types from {AssemblyName}.",
assm.Assembly.FullName
);
}
result = allMagic.ToArray();
cache[assm] = result;
return(result);
}
/// <inheritdoc />
public IEnumerable <MagicSymbol> FindMagic(AssemblyInfo assm)
{
var result = new MagicSymbol[0];
lock (cache)
{
if (cache.TryGetValue(assm, out result))
{
return(result);
}
this.logger.LogInformation($"Looking for MagicSymbols in {assm.Assembly.FullName}");
// If types from an assembly cannot be loaded, log a warning and continue.
var allMagic = new List <MagicSymbol>();
try
{
var magicTypes = assm.Assembly
.GetTypes()
.Where(t =>
{
if (!t.IsClass && t.IsAbstract)
{
return(false);
}
var matched = t.IsSubclassOf(typeof(MagicSymbol));
// This logging statement is expensive, so we only run it when we need to for debugging.
#if DEBUG
this.logger.LogDebug("Class {Class} subclass of MagicSymbol? {Matched}", t.FullName, matched);
#endif
return(matched);
});
foreach (var t in magicTypes)
{
try
{
var symbol = ActivatorUtilities.CreateInstance(services, t);
if (symbol is MagicSymbol magic)
{
allMagic.Add(magic);
this.logger.LogInformation($"Found MagicSymbols {magic.Name} ({t.FullName})");
}
else if (symbol is {})
{
throw new Exception($"Unable to create magic symbol of type {t}; service activator returned an object of type {symbol.GetType()}, which is not a subtype of MagicSymbol.");
}
else if (symbol == null)
{
throw new Exception($"Unable to create magic symbol of type {t}; service activator returned null.");
}
}
/// <summary>
/// Finds the MagicSymbols inside an assembly, and returns an instance of each.
/// </summary>
public IEnumerable <MagicSymbol> FindMagic(AssemblyInfo assm)
{
var result = new MagicSymbol[0];
if (cache.TryGetValue(assm, out result))
{
return(result);
}
this.logger.LogInformation($"Looking for MagicSymbols in {assm.Assembly.FullName}");
var magicTypes = assm.Assembly
.GetTypes()
.Where(t => t.IsClass && !t.IsAbstract && t.IsSubclassOf(typeof(MagicSymbol)));
var allMagic = new List <MagicSymbol>();
foreach (var t in magicTypes)
{
try
{
var m = ActivatorUtilities.CreateInstance(services, t) as MagicSymbol;
allMagic.Add(m);
this.logger.LogInformation($"Found MagicSymbols {m.Name} ({t.FullName})");
}
catch (Exception e)
{
this.logger.LogWarning($"Unable to create instance of MagicSymbol {t.FullName}. Magic will not be enabled.\nMessage:{e.Message}");
}
}
result = allMagic.ToArray();
cache[assm] = result;
return(result);
}
public static void Test(this MagicSymbol magic, string input, ExecuteStatus expected = ExecuteStatus.Ok)
{
var result = magic.Execute(input, new MockChannel()).GetAwaiter().GetResult();
Assert.IsTrue(result.Status == expected);
}
