This project aims to provide a general type inference framework for the Checker Framework.

All suggestions for improvements are very welcome!

If you want to extend the framework for your own type system or add additional constraint solvers, please send us mail.

The checker-framework-inference Google Drive folder contains additional documents for developers:

https://drive.google.com/drive/u/1/folders/0B7vOZvme6aAOfjQ0bWlFU1VoeVZCVjExVmJLM0lGY3NBV0VLcENYdm03c0RCNGFzZURHX2c

That information is being moved to here in the repository.

You will need a JDK and gradle. I usually use OpenJDK 7.

Install the source-versions of these three tools:

http://types.cs.washington.edu/jsr308/ http://types.cs.washington.edu/annotation-file-utilities/ http://types.cs.washington.edu/checker-framework/

You'll need CHECKERFRAMEWORK, JSR308, JAVA_HOME, and AFU environment variables set up appropriately.

insert-annotations-to-source (from $AFU/scripts) must be on your path.

Make sure that all tools are compiled correctly and that all Checker Framework test cases work.

NOTE: gradle on Ubuntu 14.10 hard-codes JAVA_HOME. To change this, edit /usr/share/gradle/bin/gradle and replace

    export JAVA_HOME=/usr/lib/jvm/default-java

with

    [ -n "$JAVA_HOME" ] || export JAVA_HOME=/usr/lib/jvm/default-java

To build:

gradle dist

Verify you have all of the requirements.

./scripts/inference

is the script used to run inference.

Example:

./scripts/inference --log-level FINE --mode ROUNDTRIP --checker ostrusted.OsTrustedChecker --solver checkers.inference.solver.PropagationSolver -afud /path/to/Annotation/File/Utilities/output/directory [List of files]

There are a couple of required options:

• --mode Specifies what the tools should do. Available options are [INFER, TYPECHECK, ROUNDTRIP, ROUNDTRIP_TYPECHECK]

  • INFER: Generates and solves the constraints and writes the results to default.jaif file

  • TYPECHECK: Typechecks the existin code

  • ROUNDTRIP: Generates and solves the constraints and then inserts the results back into the original source code

  • ROUNDTRIP_TYPECHECK: Executes roundtrip and then typechecks the result

• --checker Specifies which checker to run. The two most supported checkers at the moment are checkers.ostrusted.OsTrustedChecker and checkers.tainting.TaintingChecker

• --solver Which solver to use on the constraints.

• --targetclasspath The classpath that is required by target program.

checkers.inference.solver.PropagationSolver is the only real solver at the moment. TODO: update

Omiting the solver will create an output that numbers all of the annotation positions in the program.

checkers.inference.solver.DebugSolver will output all of the constraints generated.

Other options can be found by ./scripts/inference --help.