A Modern Objective-C Runtime.

Abstract

In light of the recent modifications to the de facto standard implementation Objective-C language by Apple Inc., the GNU Objective-C runtime lacks a number of features that are desirable for a modern implementation. This paper presents a metaobject protocol flexible enough to implement Objective-C and other languages of interest. It also presents an implementation of this model in the form of a new Objective-C runtime library which supports all of the new features of Objective-C 2.0 as well as safe inline caching, mixins, prototype-based object orientation, transparent support for other languages-including those with a prototype-based object model-and a small, maintainable code base.

Windows Based Graphical Objective C IDE

“…Chisnall et al [7] discussed a new Objective C runtime with 10% decrease in the already existing GNU runtime library which is of 11,688 lines. The newer library is 15% closer to the GNU runtime Library.…”

A new Objective-C runtime

“…I had implemented a proofof-concept Smalltalk compiler on top of the GCC runtime, but it had some ON My Way out of academia, before Cambridge persuaded me to return, the last paper I wrote was a description of a new objective-C runtime for use by the Étoilé project. 1 An objective-C implementation requires two components: a runtime library that implements the dynamic parts of the language and a compiler that emits calls to this library.…”