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:
Apr. 17, 2012
Filed:
Jul. 27, 2006
Minghui Yang, Fremont, CA (US);
Chandrasekharan Iyer, Foster City, CA (US);
Charles Wetherell, Palo Alto, CA (US);
Minghui Yang, Fremont, CA (US);
Chandrasekharan Iyer, Foster City, CA (US);
Charles Wetherell, Palo Alto, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
One embodiment of the present invention provides a system that facilitates performing conditional compilation. The system operates by analyzing programming language source code prior to compilation to locate a preprocessing directive that specifies a condition to be evaluated, and also identifies source code to be conditionally included during compilation of the source code. Next, the system generates evaluation source code that evaluates the condition. The system then evaluates the condition by evaluating ordinary programming language and environmental variables within the evaluation source code. Note that the run-time variables are also available at run-time during execution of a compiled version of the original source code. Next, the system conditionally includes source code associated with a result of the evaluation and compiles the revised source code. Finally, the system records the use of any variables during condition evaluation in a persistent manner and automatically restarts the entire processing if any of the recorded variables may have been changed subsequent to the original compilation.