Method for implementing virtual function tables in a...

Details Method for implementing virtual function tables in a... Method for implementing virtual function tables in a...

G - Physics

06

F

G06F 9/45 (2006.01) G06F 9/42 (2006.01)

Patent

CA 2095692

A METHOD FOR IMPLEMENTING VIRTUAL FUNCTION TABLES IN A COMPILER FOR AN OBJECT-ORIENTED PROGRAMMING LANGUAGE Abstract of the Disclosure A method for a computer compiler for an object- oriented programming language for implementing virtual functions is provided. In preferred embodiments of the present invention, the virtual function table for a class contains a tile table and a plurality of sub-tables. The tile table contains pointers to the sub-tables, and the sub-tables contain pointers to the virtual function members of the class. Each child class shares a sub-table of the parent class when the child class does not override a function in that sub- table. If the child class overrides a function, then the child is allocated its own sub-table. Each virtual function member for a class is identified by a tile table offset and a sub-table offset.

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