- Documentation
- Reference manual
- Introduction
- Overview
- Initialising and Managing a Prolog Project
- Built-in Predicates
- SWI-Prolog extensions
- Modules
- Constraint Logic Programming
- CHR: Constraint Handling Rules
- Multithreaded applications
- Coroutining using Prolog engines
- Foreign Language Interface
- Generating Runtime Applications
- The SWI-Prolog library
- Hackers corner
- Compatibility with other Prolog dialects
- Glossary of Terms
- SWI-Prolog License Conditions and Tools
- Summary
- Bibliography
- Packages
- Reference manual
8 CHR: Constraint Handling Rules
This chapter is written by Tom Schrijvers, K.U. Leuven, and adjustments by Jan Wielemaker.
The CHR system of SWI-Prolog is the K.U.Leuven CHR system. The runtime environment is written by Christian Holzbaur and Tom Schrijvers while the compiler is written by Tom Schrijvers. Both are integrated with SWI-Prolog and licensed under compatible conditions with permission from the authors.
The main reference for the K.U.Leuven CHR system is:
- T. Schrijvers, and B. Demoen, The K.U.Leuven CHR System: Implementation and Application, First Workshop on Constraint Handling Rules: Selected Contributions (Frühwirth, T. and Meister, M., eds.), pp. 1--5, 2004.
On the K.U.Leuven CHR website (http://dtai.cs.kuleuven.be/CHR/) you can find more related papers, references and example programs.