Implementing virtual bases with fixed offsets in object oriented applications
US7380234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Apr 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4492
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for implementing virtual bases with fixed offsets in a class hierarchy graph, having nodes representing object classes and edges representing immediate inheritance therebetween, corresponding to an object oriented program includes determining whether a set N including all nodes is empty. A node x is removed from N, when N is not empty. It is determined whether a set Y is empty, Y including nodes that directly and virtually inherit from x. When Y is empty, return to determining whether N is empty, otherwise a node y is removed from Y. It is determined whether y is duplicated. When y is duplicated, return to determining whether Y is empty, otherwise an edge e, representing that y virtually inherits from x, is replaced with an edge e′, representing that x has a fixed offset with respect to y. Upon replacing e, return to determining whether N is empty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.