Matthew W Anderson

US Patent:

20080091409, Apr 17, 2008

Filed:

Oct 16, 2006

Appl. No.:

11/581546

Inventors:

Matthew Douglas Anderson - Littleton CO, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 17/27

US Classification:

704 9

Abstract:

A customizable, portable, object-oriented expression parser and evaluator provides the ability to customize syntactic and semantic elements of expression parsing and evaluation via class inheritance and interface implementation. The customizable expression parser/evaluator provides independence from a fixed variable resolution process, provides flexibility in the data types used for representing numbers and other values, and provides notifications that allow inspection and validation during expression parsing and evaluation. The customizable expression parser/evaluator utilizes a class library that supports mathematical expression parsing according to rules that can be customized by developers using object orientated programming. The customizable expression parser/evaluator class library provides a set of classes to parse and evaluate mathematical and logical expressions. The class library supports the evaluation of expressions having varying degrees of complexity.