- catamorphisms, category theory
- attribute grammars
are described there. And there are links from that article to other materials providing deep insights in these powerful theories: attribute grammar tools and articles of the Essential Haskell Compiler project.
It is no wonder that it is exactly a compiler project homepage that provides good circular programming and attribute grammar tutorials
the reason may be that a compiler project is complex enough to require good separation of concerns, modularity, reuse (goals of Aspect Oriented Programming, too), and attribute grammars are powerful tools to achieve these goals.
- Wikipedia article
- An Attribute Grammar tutorial by Swiestra Attribute grammars – A short tutorial
- Also Happy contains AG-related capabilities, see Chapter 4. Attribute Grammars
- Attribute Grammars were originally proposed be Donald E. Knuth in Semantics of Context-Free Languages.
- Knuth describes the origin of the ideas behind Attribute Grammars in The Genesis of Attribute Grammars. Furthermore he gives a rich bibliography and some error corrections for some of his papers there.
Separation of concerns
Both Swiestra's article (mentioned above) and the Essential Haskell Compiler Project tool (mentioned below) remarks the connection of attribute grammars to the topic of separation of concerns, a goal of aspect orinted programming. This goal can be achieved by multiple ways in functional programming, see the concepts monad and arrow). Swiestra'a article mentions analogies between
Portals or other rich resources
- Attribute Grammar page of Utrecht Univesity
- Description of Attibute Grammar aspects in the Happy parser generator system for Haskell
- The FNC-2 Attribute Grammar System
- Resources for Attribute Grammar research by Didier Parigot (INRIA)
- Team OSCAR at INRIA is stopped since 1999 but the following page contains some older publications: Former Team OSCAR Home Page
Utrecht University's Attribute Grammar System tools include also an attribute grammar compiler, UUAGC. The concept of attribute grammar was used in their Essential Haskell Compiler project, which gives us not only a working programming language, but also a good didactical material about using attribute grammars, e.g. in writing compilers.
Albeits these materials are self-contained, they reveal that the theory of attribute grammars is related to other concepts (circular programming, catamorphism).
Robert Dockins has reported Attribute Grammar Support for Happy in the Haskell Communities and Activities Report (10th edititon, June 2006)