A very small C interpreter
(Note: Originally a fork of https://github.com/RTSYork/picoc)
ef8bd5cdae
git-svn-id: http://picoc.googlecode.com/svn/trunk@112 21eae674-98b7-11dd-bd71-f92a316d2d60 |
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|---|---|---|
| tests | ||
| clibrary.c | ||
| heap.c | ||
| hello.c | ||
| lex.c | ||
| Makefile | ||
| parse.c | ||
| picoc.c | ||
| picoc.h | ||
| platform_library.c | ||
| platform_support.c | ||
| README | ||
| 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.