The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2012
Filed:
Oct. 06, 2005
Gabriele Giuseppini, Redmond, WA (US);
Gabriele Giuseppini, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Systems and methods for testing a context-free language compiler. Given a description of a context-free grammar including a set of production rules, a test component applies the grammar description to generate one or more valid test strings of terminal symbols. A value generation component may replace one or more terminal symbols in the set of test strings with values appropriate for the class of the terminal symbol. The resulting set of test strings may be individually applied to a compiler, which returns a response based upon the applied test string that may be used to determine if the compiler is operating as expected. The set of test strings may be generated using every production rule of the given context-free grammar description. In addition to valid test strings, a set of invalid test strings may be generated by making use of a set of invalid production rules while generating test strings.