forked from GitHub/gf-core
589e1e4f08
When at a non-leaf node, refinements with identical type signatures are highlighting and can re placed without destroying the children. If not, the refinement is greyed and the user is asked to clear the current subtree first if they wish to replace it. This aspect of the UI should be polished, but at least it is obvious. Also, some substantial optimizations can still be made to cache the processed type signatures (which determine what can be replaced in-place)
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.)