ogc

A compiler for the Xi Programming Language

In addition to the features mentioned in the language specification, we also support downcasting TargetClass#Expression, instanceof, and for-loops. Example usage of all of these features can be found in examples/hashtable.xi.

Building

With Apache Ant installed and the JAVA_HOME environment variable set, run the ogc-build script. If building for the first time, ensure you have an internet connection.

Running

To compile a Xi program:

ogc <filename>

To specify a folder containing interface .ixi files:

ogc -libpath <path> <filename>

To compile and link multiple files, pass all of the files to ogc.

To view all options:

ogc --help

Advanced

We support the following optimizations:

• cse Common Subexpression Elimination
• cf Constant Folding
• uce Unreachable Code Elimination
• dce Dead Code Elimination
• cp Constant Propagation
• copy Copy Propagation

To compile with no optimizations, pass -O. To compile with only specified optimizations on, pass -O<opt> for each optimization. To turn specified optimizations off, pass -O-no-<opt> for each optimization.