forked from GitHub/gf-core
875df01dc6
This patch adds GF.Compile.Compute.ConcreteLazy, which replaces the Err monad with the Identity monad. While the Err monad makes the interpreter (hyper)strict, the Identity monad let's the interpreter inherit Haskell's laziness. This can give big speedups: from 50s to 1s in one example, from ~4 minutes to ~2 minutes for the RGL. This is still experimental and might be buggy, so it is off by default. You can turn it on by configuring with the -fcclazy flag, e.g. cabal configure -fcclazy Let me know if anything breaks.
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 doc/gf-developers.html for installation instructions.