PluginFactory< T > Class Template Reference

Plugin factory utility class instantates interfaces from a DLL assembly file Adapted from: http://stackoverflow.com/questions/5751844/how-to-reference-a-dll-on-runtime More...

Public Member Functions
T	CreatePlugin (string file)
	Find and instantiate a type from a specified assembly file (accepts only DLL files) More...
List< string >	ListPlugins (string path)
	Lists assembly (DLL) file names that implement the type T. More...

Detailed Description

Plugin factory utility class instantates interfaces from a DLL assembly file Adapted from: http://stackoverflow.com/questions/5751844/how-to-reference-a-dll-on-runtime

Definition at line 13 of file PluginFactory.cs.

Member Function Documentation

T PluginFactory< T >.CreatePlugin

(

string

file

)

Find and instantiate a type from a specified assembly file (accepts only DLL files)

Returns

The plugin.

Parameters

file

File.

Definition at line 20 of file PluginFactory.cs.

                                       {
        if (!file.EndsWith(".dll")) {
            file += ".dll";
        }
        if (!File.Exists(file)) {
            Debug.LogError("File not found (" + file + ")");
            return default(T);
        }
        Type[] assemblyTypes =  Assembly.LoadFrom(file).GetTypes();
        foreach(Type assemblyType in assemblyTypes) {
            Type interfaceType = assemblyType.GetInterface(typeof(T).FullName);
            // if our interface is found, instantiate and return it!
            if (interfaceType != null) {
                return (T)Activator.CreateInstance(assemblyType);
            }
        }
        Debug.LogError("Interface " + typeof(T).FullName + " not found in file: " + file);
        return default(T);
    }

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List<string> PluginFactory< T >.ListPlugins

(

string

path

)

Lists assembly (DLL) file names that implement the type T.

Returns

The plugins.

Parameters

path

Path.

Definition at line 45 of file PluginFactory.cs.

                                                 {
        List<string> list = new List<string>();
        // find .dll files
        foreach (string file in Directory.GetFiles(path, "*.dll")) {
            Assembly assembly;
            try {
                assembly = Assembly.LoadFrom(file);
            }
            catch(Exception e) {
                Debug.LogError(file + ": " + e + " " + e.Message + ")");
                continue;
            }
            Type[] types;
            try {
                types = assembly.GetTypes();
            }
            catch(Exception e) {
                Debug.LogError(file + ": " + e + " " + e.Message + ")");
                continue;
            }
            foreach (Type assemblyType in types) {
                Type interfaceType = assemblyType.GetInterface(typeof(T).FullName);
                if (interfaceType != null) {
                    list.Add(Path.GetFileNameWithoutExtension(file));
                }
            }
        }
        
        return list;
    }

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The documentation for this class was generated from the following file:

• Assets/botnavsim/Scripts/Utility/PluginFactory.cs