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The work done by the partial evaluator is now divied in two stages: - A static "term traversal" stage that happens only once per term and uses only statically known information. In particular, the values of lambda bound variables are unknown during this stage. Some tables are transformed to reduce the cost of pattern matching. - A dynamic "function application" stage, where function bodies can be evaluated repeatedly with different arguments, without the term traversal overhead and without recomputing statically known information. Also the treatment of predefined functions has been reworked to take advantage of the staging and better handle partial applications.
DESCRIPTION
The Grammatical Framework (=GF) is a grammar formalism based on type theory.
It consists of
* a special-purpose programming language
* a compiler of the language
* a generic grammar processor
The compiler reads GF grammars from user-provided files, and the
generic grammar processor performs various tasks with the grammars:
* generation
* parsing
* translation
* type checking
* computation
* paraphrasing
* random generation
* syntax editing
GF particularly addresses four aspects of grammars:
* multilinguality (parallel grammars for different languages)
* semantics (semantic conditions of well-formedness, semantic
properties of expressions)
* grammar engineering (modularity, abstractions, libraries)
* embeddability in programs written in other languages (C,C++,
Haskell, Java, JavaScript)
COMPILATION and INSTALLATION of source distribution:
See download/index.html for installation instructions.
(More details can be found in doc/gf-developers.html.)