/// <summary>
/// Initialises a new instance of the CSPlugin class
/// </summary>
public CSPlugin()
{
// Initialise
hooks = new Dictionary <string, MethodInfo>();
// Find all hooks
foreach (MethodInfo method in GetType().GetMethods(BindingFlags.NonPublic | BindingFlags.Instance))
{
object[] attr = method.GetCustomAttributes(typeof(HookMethod), true);
if (attr.Length > 0)
{
HookMethod hookmethod = attr[0] as HookMethod;
hooks.Add(hookmethod.Name, method);
}
}
}
protected List <HookMethod> FindHooks(string name, object[] args)
{
HookCache hookCache;
object[] defaultValue;
bool flag;
List <HookMethod> hookMethod = this.HooksCache.GetHookMethod(name, args, out hookCache);
if (hookMethod != null)
{
return(hookMethod);
}
List <HookMethod> hookMethods = new List <HookMethod>();
if (!this.Hooks.TryGetValue(name, out hookMethod))
{
return(hookMethods);
}
HookMethod hookMethod1 = null;
HookMethod hookMethod2 = null;
foreach (HookMethod hookMethod3 in hookMethod)
{
if (!hookMethod3.IsBaseHook)
{
int num = (args != null ? (int)args.Length : 0);
bool flag1 = false;
if (num == (int)hookMethod3.Parameters.Length)
{
defaultValue = args;
}
else
{
defaultValue = ArrayPool.Get((int)hookMethod3.Parameters.Length);
flag1 = true;
if (num > 0 && defaultValue.Length != 0)
{
Array.Copy(args, defaultValue, Math.Min(num, (int)defaultValue.Length));
}
if ((int)defaultValue.Length > num)
{
for (int i = num; i < (int)defaultValue.Length; i++)
{
ParameterInfo parameters = hookMethod3.Parameters[i];
if (parameters.DefaultValue != null && parameters.DefaultValue != DBNull.Value)
{
defaultValue[i] = parameters.DefaultValue;
}
else if (parameters.ParameterType.IsValueType)
{
defaultValue[i] = Activator.CreateInstance(parameters.ParameterType);
}
}
}
}
if (hookMethod3.HasMatchingSignature(defaultValue, out flag))
{
if (!flag)
{
hookMethod2 = hookMethod3;
}
else
{
hookMethod1 = hookMethod3;
if (hookMethod1 != null)
{
hookMethods.Add(hookMethod1);
}
else if (hookMethod2 != null)
{
hookMethods.Add(hookMethod2);
}
hookCache.SetupMethods(hookMethods);
return(hookMethods);
}
}
if (!flag1)
{
continue;
}
ArrayPool.Free(defaultValue);
}
else
{
hookMethods.Add(hookMethod3);
}
}
if (hookMethod1 != null)
{
hookMethods.Add(hookMethod1);
}
else if (hookMethod2 != null)
{
hookMethods.Add(hookMethod2);
}
hookCache.SetupMethods(hookMethods);
return(hookMethods);
}
protected virtual object InvokeMethod(HookMethod method, object[] args)
{
return(method.Method.Invoke(this, args));
}
protected virtual object InvokeMethod(HookMethod method, object[] args) => method.Method.Invoke(this, args);
protected List <HookMethod> FindHooks(string name, object[] args)
{
// Get the full name of the hook `name(argument type 1, argument type 2, ..., argument type x)`
var fullName = name;
if (args?.Length > 0)
{
fullName += $"({string.Join(", ", args.Select(x => x?.GetType().ToString() ?? "null").ToArray())})";
}
// Check the cache if we already found a match for this hook
if (HooksCache.ContainsKey(fullName))
{
return(HooksCache[fullName]);
}
List <HookMethod> methods;
var matches = new List <HookMethod>();
// Get all hook methods that could match, return an empty list if none match
if (!Hooks.TryGetValue(name, out methods))
{
return(matches);
}
// Find matching hooks
HookMethod exactMatch = null;
HookMethod overloadedMatch = null;
foreach (var h in methods)
{
// A base hook should always have a matching signature either directly or through inheritance
// and should always be called as core functionality depends on it.
if (h.IsBaseHook)
{
matches.Add(h);
continue;
}
// Check if this method matches the hook arguments passed if it isn't a base hook
object[] hookArgs;
var received = args?.Length ?? 0;
if (received != h.Parameters.Length)
{
// The call argument count is different to the declared callback methods argument count
hookArgs = new object[h.Parameters.Length];
if (received > 0 && hookArgs.Length > 0)
{
// Remove any additional arguments which the callback method does not declare
Array.Copy(args, hookArgs, Math.Min(received, hookArgs.Length));
}
if (hookArgs.Length > received)
{
// Create additional parameters for arguments excluded in this hook call
for (var n = received; n < hookArgs.Length; n++)
{
var parameter = h.Parameters[n];
if (parameter.DefaultValue != null && parameter.DefaultValue != DBNull.Value)
{
// Use the default value that was provided by the method definition
hookArgs[n] = parameter.DefaultValue;
}
else if (parameter.ParameterType.IsValueType)
{
// Use the default value for value types
hookArgs[n] = Activator.CreateInstance(parameter.ParameterType);
}
}
}
}
else
{
hookArgs = args;
}
bool isExactMatch;
if (h.HasMatchingSignature(hookArgs, out isExactMatch))
{
if (isExactMatch)
{
exactMatch = h;
break;
}
// Should we determine the level and call the closest overloaded match? Performance impact?
overloadedMatch = h;
}
}
if (exactMatch != null)
{
matches.Add(exactMatch);
}
else
{
if (overloadedMatch != null)
{
matches.Add(overloadedMatch);
}
}
return(HooksCache[fullName] = matches);
}
public HookMatch(HookMethod method, object[] args)
{
Method = method;
Args = args;
}
protected List <HookMethod> FindHooks(string name, object[] args)
{
// Get the full name of the hook `name(argument type 1, argument type 2, ..., argument type x)`
// Check the cache if we already found a match for this hook
HookCache cache;
List <HookMethod> methods = HooksCache.GetHookMethod(name, args, out cache);
if (methods != null)
{
return(methods);
}
List <HookMethod> matches = new List <HookMethod>();
// Get all hook methods that could match, return an empty list if none match
if (!Hooks.TryGetValue(name, out methods))
{
return(matches);
}
// Find matching hooks
HookMethod exactMatch = null;
HookMethod overloadedMatch = null;
foreach (HookMethod h in methods)
{
// A base hook should always have a matching signature either directly or through inheritance
// and should always be called as core functionality depends on it.
if (h.IsBaseHook)
{
matches.Add(h);
continue;
}
// Check if this method matches the hook arguments passed if it isn't a base hook
object[] hookArgs;
int received = args?.Length ?? 0;
bool pooledArray = false;
if (received != h.Parameters.Length)
{
// The call argument count is different to the declared callback methods argument count
hookArgs = ArrayPool.Get(h.Parameters.Length);
pooledArray = true;
if (received > 0 && hookArgs.Length > 0)
{
// Remove any additional arguments which the callback method does not declare
Array.Copy(args, hookArgs, Math.Min(received, hookArgs.Length));
}
if (hookArgs.Length > received)
{
// Create additional parameters for arguments excluded in this hook call
for (int n = received; n < hookArgs.Length; n++)
{
ParameterInfo parameter = h.Parameters[n];
if (parameter.DefaultValue != null && parameter.DefaultValue != DBNull.Value)
{
// Use the default value that was provided by the method definition
hookArgs[n] = parameter.DefaultValue;
}
else if (parameter.ParameterType.IsValueType)
{
// Use the default value for value types
hookArgs[n] = Activator.CreateInstance(parameter.ParameterType);
}
}
}
}
else
{
hookArgs = args;
}
bool isExactMatch;
if (h.HasMatchingSignature(hookArgs, out isExactMatch))
{
if (isExactMatch)
{
exactMatch = h;
break;
}
// Should we determine the level and call the closest overloaded match? Performance impact?
overloadedMatch = h;
}
if (pooledArray)
{
ArrayPool.Free(hookArgs);
}
}
if (exactMatch != null)
{
matches.Add(exactMatch);
}
else
{
if (overloadedMatch != null)
{
matches.Add(overloadedMatch);
}
}
cache.SetupMethods(matches);
return(matches);
}
