On assertion-based encapsulation for object invariants and simulations

In object-oriented programming, reentrant method invocations and shared references make it difficult to achieve adequate encapsulation for sound modular reasoning. This tutorial paper surveys recent progress using auxiliary state (ghost fields) to describe and achieve encapsulation. It also compares this technique with encapsulation in the forms provided by separation logic. Encapsulation is assessed in terms of modular reasoning about invariants and simulations.

• Type: Journal
• Year: 2007
• Where: FAC
• Authors: David A. Naumann
• Keywords: Adequate Encapsulation, FAC 2007, Modular Reasoning, Sound Modular Reasoning