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The CF parser in GF.Grammar.CF assigns function names to the rules, but they are not always unique, causing rules to be dropped in the follwing CF->GF conversion. So a pass has been added before the CF->GF conversion, to make sure that function names are unique. A comment says "rules have an amazingly easy parser", but the parser looks like quick hack. It is very sloppy and silently ignores many errors, e.g. - Explicitly given function names should end with '.', but if the do not, the last character in the function name is silently dropped. - Everything following a ';' is silently dropped.
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.)