mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-06 21:11:44 +00:00
159 lines
5.5 KiB
Text
159 lines
5.5 KiB
Text
re2c
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
DESCRIPTION
|
|
--------------------------------------------------------------------------------
|
|
re2c is a tool for generating C-based recognizers from regular expressions.
|
|
re2c-based scanners are efficient: for programming languages, given similar
|
|
specifications, a re2c-based scanner is typically almost twice as fast as a
|
|
flex-based scanner with little or no increase in size (possibly a decrease
|
|
on cisc architectures). Indeed, re2c-based scanners are quite competitive with
|
|
hand-crafted ones.
|
|
|
|
Unlike flex, re2c does not generate complete scanners: the user must supply some
|
|
interface code. While this code is not bulky (about 50-100 lines for a
|
|
flex-like scanner; see the man page and examples in the distribution) careful
|
|
coding is required for efficiency (and correctness). One advantage of this
|
|
arrangement is that the generated code is not tied to any particular input
|
|
model.
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
DOWNLOAD
|
|
--------------------------------------------------------------------------------
|
|
The re2c distribution can be found at:
|
|
https://sourceforge.net/projects/re2c/
|
|
|
|
Download the latest tarball:
|
|
https://sourceforge.net/projects/re2c/files/latest/download
|
|
|
|
Clone git repo:
|
|
git clone git://git.code.sf.net/p/re2c/code-git
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
BUILD
|
|
--------------------------------------------------------------------------------
|
|
Contents:
|
|
1. simple build
|
|
2. bootstrap
|
|
3. out-of-source build
|
|
4. testing
|
|
5. rebuild documentation
|
|
6. build for windows with mingw
|
|
7. build from git
|
|
|
|
1. Simplest possible build:
|
|
$ ./configure [--prefix=<prefix>]
|
|
$ make
|
|
$ make install
|
|
This will build re2c and install it (binary and man page) to <prefix> (defaults
|
|
to /usr/local).
|
|
|
|
2. Bootstrap and rebuild:
|
|
$ ./configure [--prefix=<prefix>]
|
|
$ make bootstrap
|
|
$ make install
|
|
Usual bootstrap procedure: re2c uses re2c to compile its lexer.
|
|
1. build lexer (if make finds re2c binary in build directory, it will build lexer
|
|
from source, otherwize it will use prebuilt lexer)
|
|
2. build re2c
|
|
3. build lexer from source using re2c binary in build directory
|
|
4. rebuild re2c
|
|
|
|
3. Out-of-source build:
|
|
$ mkdir <build-directory>
|
|
$ cd <build-directory>
|
|
$ <path-to-configure>/configure [--prefix=<prefix>]
|
|
$ make
|
|
$ make install
|
|
|
|
4. Testing:
|
|
$ make check
|
|
This will redirect test script output to file. If you want to see progress:
|
|
$ make tests
|
|
Testing under valgrind (takes a long time):
|
|
$ make vtests
|
|
|
|
5. Rebuild documentation (requires rst2man.py):
|
|
$ ./configure --enable-docs [--prefix=<prefix>]
|
|
$ make docs
|
|
$ make install
|
|
|
|
6. Build for windows using mingw:
|
|
$ ../configure --host i686-w64-mingw32 [--prefix=<prefix>]
|
|
$ make
|
|
This will result into an executable re2c.exe, which can be tested with wine:
|
|
$ make wtests
|
|
|
|
7. If you want to build from git, you'll first need to generate autotools files:
|
|
$ ./autogen.sh
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
INFO
|
|
--------------------------------------------------------------------------------
|
|
$ man re2c
|
|
|
|
re2c home page:
|
|
re2c.org
|
|
|
|
re2c manual:
|
|
re2c.org/manual.html
|
|
|
|
Ulya Trofimovich's blog on re2c:
|
|
skvadrik.github.io/aleph_null/re2c.html
|
|
|
|
Original paper on re2c: "RE2C: a More Versatile Parser Generator" (1994, Peter
|
|
Bumbulis and Donald D. Cowan).
|
|
|
|
Examples can be found in 'examples' directory.
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
MAILING LISTS
|
|
--------------------------------------------------------------------------------
|
|
re2c-general:
|
|
re2c-general@lists.sourceforge.net
|
|
re2c-devel:
|
|
re2c-devel@lists.sourceforge.net
|
|
|
|
You are welcome to ask for help or share your thoughts and ideas about re2c :)
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
BUGS
|
|
--------------------------------------------------------------------------------
|
|
Please report any bugs and send feature requests to:
|
|
https://sourceforge.net/p/re2c/_list/tickets
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
AUTHORS
|
|
--------------------------------------------------------------------------------
|
|
Originally written by Peter Bumbulis (peter@csg.uwaterloo.ca)
|
|
Currently maintained by:
|
|
Ulya Trofimovich <skvadrik@gmail.com>
|
|
Dan Nuffer <nuffer@users.sourceforge.net>
|
|
Marcus Boerger <helly@users.sourceforge.net>
|
|
Hartmut Kaiser <hkaiser@users.sourceforge.net>
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
|
LICENSE
|
|
--------------------------------------------------------------------------------
|
|
re2c is distributed with no warranty whatever. The code is certain to contain
|
|
errors. Neither the author nor any contributor takes responsibility for any
|
|
consequences of its use.
|
|
|
|
re2c is in the public domain. The data structures and algorithms used in re2c
|
|
are all either taken from documents available to the general public or are
|
|
inventions of the authors. Programs generated by re2c may be distributed freely.
|
|
re2c itself may be distributed freely, in source or binary, unchanged or
|
|
modified. Distributors may charge whatever fees they can obtain for re2c.
|
|
|
|
If you do make use of re2c, or incorporate it into a larger project an
|
|
acknowledgement somewhere (documentation, research report, etc.) would be
|
|
appreciated.
|
|
--------------------------------------------------------------------------------
|