/// <summary>
/// Tries to call an instance method with the specified name, a single parameter, and a return value.
/// </summary>
/// <typeparam name="TArg1">The type of the method's single parameter.</typeparam>
/// <typeparam name="TResult">The type of the method's result value.</typeparam>
/// <param name="source">The object to call the method on.</param>
/// <param name="methodName">The name of the method to call.</param>
/// <param name="arg1">The value to pass as the method's single argument.</param>
/// <param name="value">The value returned by the method.</param>
/// <returns><c>true</c> if the method was found, <c>false</c> otherwise.</returns>
public static bool TryCallMethod <TArg1, TResult>(this object source, string methodName, TArg1 arg1, out TResult value)
{
var type = source.GetType();
var paramType1 = typeof(TArg1);
var returnType = typeof(TResult);
var cachedItem = Cache.GetOrAdd(
new PropertyFetcherCacheKey(type, paramType1, returnType, methodName),
key =>
DynamicMethodBuilder <Func <object, TArg1, TResult> >
.CreateMethodCallDelegate(
key.Type1,
key.Name,
OpCodeValue.Callvirt,
methodParameterTypes: new[] { key.Type2 }));
if (cachedItem is Func <object, TArg1, TResult> func)
{
value = func(source, arg1);
return(true);
}
value = default;
return(false);
}
/// <summary>
/// Tries to call an instance method with the specified name, two parameters, and no return value.
/// </summary>
/// <typeparam name="TArg1">The type of the method's first parameter.</typeparam>
/// <typeparam name="TArg2">The type of the method's second parameter.</typeparam>
/// <param name="source">The object to call the method on.</param>
/// <param name="methodName">The name of the method to call.</param>
/// <param name="arg1">The value to pass as the method's first argument.</param>
/// <param name="arg2">The value to pass as the method's second argument.</param>
/// <returns><c>true</c> if the method was found, <c>false</c> otherwise.</returns>
public static bool TryCallVoidMethod <TArg1, TArg2>(this object source, string methodName, TArg1 arg1, TArg2 arg2)
{
var type = source.GetType();
var paramType1 = typeof(TArg1);
var paramType2 = typeof(TArg2);
var cachedItem = Cache.GetOrAdd(
new PropertyFetcherCacheKey(type, paramType1, paramType2, methodName),
key =>
DynamicMethodBuilder <Action <object, TArg1, TArg2> >
.CreateMethodCallDelegate(
key.Type1,
key.Name,
OpCodeValue.Callvirt,
methodParameterTypes: new[] { key.Type2, key.Type3 }));
if (cachedItem is Action <object, TArg1, TArg2> func)
{
func(source, arg1, arg2);
return(true);
}
return(false);
}