# Code Review: Loader9 **URL:** \ **Category:** IronRuby\ **Created:** [May 10, 2008, 12:43am UTC](https://www.ruby-forum.com/t/code-review-loader9/137205 "2008-05-10T00:43:08Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![grujildo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/94ad74/32.png) [@grujildo](https://www.ruby-forum.com/u/grujildo)\ **Post date:** [May 10, 2008, 12:43am UTC](https://www.ruby-forum.com/t/code-review-loader9/137205/1 "2008-05-10T00:43:08Z")
tfpt review /shelveset:Loader9;REDMOND\tomat DLR change: Adds IsAbsolutePath to PlatformAdaptationLayer. On Windows the options are: 1. ``` "foo\bar" ``` 2. ``` "\foo\bar" ``` 3. ``` "X:foo\bar" ``` 4. ``` "X:\foo\bar" ``` Of which only the last one is absolute. 1) is relative to the current directory, 2) and 3) are relative to the current drive. One Unix all paths starting with “/” are absolute. Ruby changes: A new implementation of file loader in Ruby. File loading works as follows: Argument path is 1. ``` CLR long assembly name or qualified type name ``` - ``` Load .NET assembly or C# implemented Ruby library if the type ``` of the library initializer is specified. The library initializer needs to derive from LibraryInitializer class and is called to load the library classes and modules. - ``` The path is matched against pattern (,)? ``` (, =)+, property names are arbitrary identifiers and property values arbitrary strings not containing ‘=’ or ‘,’. Exact CLR property names are not matched. 1. ``` Absolute path ``` switch (extension): - ``` .rb -> load ``` - ``` .dll ``` - MRI: load dll - IR: not supported - ``` None ``` - MRI: try load path + .rb, path + .dll - IR: try load path, path + extension for all registered extensions in runtime (.rb, .py, .js, …) - ``` If multiple files match exist an ambiguous match exception is ``` thrown. 1. ``` Relative path ``` - ``` For each dir in LoadPaths: Apply (2) on dir combined with path ``` Notes: - ``` Require checks $" variable for loaded files and appends the ``` name of the loaded file with extension to it on success. - ``` Load doesn't try to append extensions. ``` Adds Kernel#load\_assembly(assembly, type) for loading assemblies and C# implemented Ruby libraries. Tomas