CiaoPP is a program processor framework for Ciao. CiaoPP performs a number of program debugging, analysis, and source-to-source transformation tasks:

• Inference of properties of the predicates and literals of the program (types, modes and other variable instantiation properties, non-failure, determinacy, bounds on computational cost, bounds on sizes of terms in the program, etc.).

• Certain kinds of static debugging and verification, finding errors before running the program. This includes checking how programs call system library predicates and also checking the assertions present in the program or in other modules used by the program. Such assertions represent essentially partial specifications of the program.

• Several kinds of source to source program transformations such as program specialization, slicing, partial evaluation, program parallelization (taking granularity control into account), inclusion of run-time tests for assertions which cannot be checked completely at compile-time, etc.

The information generated by analysis and the assertions in the specifications are all written in the same assertion language, which is in turn also used by the Ciao system documentation generator, lpdoc.

This repository contains the generic preprocessor framework together with some basic analyses, transformations, and language support. Other features (including support for a variety of programming languages) are distributed as separate bundles.

CiaoPP is distributed under the GNU general public license.

By default, Ciao will detect and build CiaoPP during system compilation. In order to customize the default configuration options, please refer to the Ciao installation instructions.

It is possible to do a separate build and install of CiaoPP with the following command:

$ ciao get ciaopp