A very small C interpreter
(Note: Originally a fork of https://github.com/RTSYork/picoc)
d2da61b81d
git-svn-id: http://picoc.googlecode.com/svn/trunk@311 21eae674-98b7-11dd-bd71-f92a316d2d60 |
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|---|---|---|
| softfloat | ||
| tests | ||
| clibrary.c | ||
| expression.c | ||
| heap.c | ||
| lex.c | ||
| library_ffox.c | ||
| library_surveyor.c | ||
| library_unix.c | ||
| Makefile | ||
| math_library.c | ||
| parse.c | ||
| picoc.c | ||
| picoc.h | ||
| platform.c | ||
| platform.h | ||
| platform_ffox.c | ||
| platform_surveyor.c | ||
| platform_unix.c | ||
| README | ||
| softfloat_library.c | ||
| table.c | ||
| TODO | ||
| type.c | ||
| variable.c | ||
picoc
-----
PicoC is a very small C interpreter. It's intended for use as a script
language for embedded systems. It was originally written to be the
script language for a UAV on-board flight system and is very suitable
for other robotic, embedded and also non-embedded applications.
The core C source code is less than 3000 lines of code. When compiled
it only takes a few k of code space and is also very sparing of data
space. This means it can work well in small embedded devices. It's also
a fun example of how to create a very small language implementation
while still keeping the code readable.
Compiling picoc
---------------
picoc can be compiled for a UNIX/Linux/POSIX host by typing "make".
The test suite can be run by typing "make test".
Porting picoc
-------------
platform.h is where you select your platform type and specify the includes
etc. for your platform.
platform_support.c contains support functions so the compiler can work on
your platform, such as how to write characters to the console etc..
platform_library.c contains your library of functions you want to make
available to user programs.
There's also a new clibrary.c which contains user library functions like
printf() which are platform-independent.
Porting the system will involve setting up suitable includes and defines
in platform.h, writing some I/O routines in platform_support.c, putting
whatever user functions you want in platform_library.c and then changing
the main program in picoc.c to whatever you need to do to get programs
into the system.
platform.h is set to UNIX_HOST by default so tests can be easily run on
a UNIX system. You'll need to specify your own host setup dependent on
your target platform.
Copyright
---------
picoc is published under the "New BSD License".
http://www.opensource.org/licenses/bsd-license.php
Copyright (c) 2009, Zik Saleeba
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the Zik Saleeba nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.