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Gazelle: a system for building fast, reusable parsers
<http://www.reverberate.org/gazelle/>
PRELIMINARY WARNING
===================
While Gazelle is getting quite usable, the language and the APIs are still quite
subject to change.
Still with me? Great. :)
BUILDING
========
You need to have Lua installed to do anything interesting. The C runtime
doesn't need Lua, but without Lua you can't compile any grammars.
Gazelle should build mostly out-of-the-box on UNIX-like systems if Lua 5.1 is
installed, but you may need to tweak the Makefile to point to your local Lua
installation. Ubuntu Linux and Mac OS X are tested. Just type make:
$ make
$ make install PREFIX=/usr
The PREFIX will default to /usr/local. "make install" installs binaries like
the compiler into $PREFIX/bin, headers into $PREFIX/include, and libraries
into $PREFIX/lib.
To build the documentation, you need to have asciidoc installed, as well
as graphviz if you want to see the graphics.
$ make
$ . lua_path (this is needed since the documentation uses .lua files from the compiler)
$ make doc
Alternatively you can just read the manual on the Gazelle website.
ROADMAP OF THE SOURCE
=====================
compiler/
what parses the grammar, turns it into state machines, and dumps into bytcode
compiler/bootstrap
compiler code that will not be needed once Gazelle is self-hosting
lang_ext/
wrappers around the C runtime, for high-level languages (currently only Lua)
runtime/
the tiny, fast, small-memory-footprint C runtime that actually does the parsing
runtime/include
public header files for the runtime.
sketches/
code that is either half-written or for debugging-only
tests/
unit tests (not very many at the moment)
utilities/
command-line utilities for doing useful things
CONTACT
=======
For questions, comments, etc. please post to the gazelle-users group. I read
and respond to posts on this list.
http://groups.google.com/group/gazelle-users
If you need to contact me directly, I am:
Joshua Haberman <joshua@reverberate.org>
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