106 lines
3.9 KiB
ReStructuredText
106 lines
3.9 KiB
ReStructuredText
Introduction
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============
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Picrin is a lightweight scheme implementation intended to comply with full R7RS specification. Its code is written in pure C99 and does not requires any special external libraries installed on the platform.
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- R7RS compatibility (but partial support)
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- reentrant design (all VM states are stored in single global state object)
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- bytecode interpreter (based on stack VM)
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- direct threaded VM
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- internal representation by nan-boxing
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- conservative call/cc implementation (users can freely interleave native stack with VM stack)
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- exact GC (simple mark and sweep, partially reference count is used as well)
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- string representation by rope data structure
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- support full set hygienic macro transformers, including implicit renaming macros
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- extended library syntax
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- advanced REPL support (multi-line input, etc)
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- tiny & portable library (all functions will be in `libpicrin.so`)
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Installation
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------------
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- make `Makefile`
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Change directory to `build` then run `cmake` to create Makefile. Once `Makefile` is generated you can run `make` command to build picrin::
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$ cd build
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$ cmake ..
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Actually you don't necessarily need to move to `build` directory before running `cmake` (in that case `$ cmake .`), but I strongly recommend to follow above instruction.
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- build
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A built executable binary will be under bin/ directory and shared libraries under lib/::
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$ make
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If you are building picrin on other systems than x86_64, PIC_NAN_BOXING flag is automatically turned on (see include/picrin/config.h for detail).
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- install
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Just running `make install`, picrin library, headers, and runtime binary are install on your system, by default into `/usr/local` directory. You can change this value via ccmake::
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$ make install
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- run
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Before installing picrin, you can try picrin without breaking any of your system. Simply directly run the binary `bin/picrin` from terminal, or you can use `make` to execute it like this::
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$ make run
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- debug run
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If you execute `cmake` with debug flag `-DCMAKE_BUILD_TYPE=Debug`, it builds the binary with all debug flags enabled (PIC_GC_STRESS, VM_DEBUG, DEBUG)::
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$ cmake -DCMAKE_BUILD_TYPE=Debug ..
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Requirement
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-----------
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Picrin scheme depends on some external libraries to build the binary:
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- perl
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- lex (preferably, flex)
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- getopt
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- readline (optional)
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- regex.h of POSIX.1 (optional)
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Optional libraries are, if cmake detected them, automatically enabled.
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The compilation is tested only on Mac OSX and Ubuntu. I think (or hope) it'll be ok to compile and run on other operating systems such as Arch or Windows, but I don't guarantee :(
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Homepage
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--------
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Currently picrin is hosted on Github. You can freely send a bug report or pull-request, and fork the repository.
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https://github.com/wasabiz/picrin
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IRC
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---
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There is a chat room on chat.freenode.org, channel #picrin.
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LICENSE
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-------
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Copyright (c) 2013-2014 Yuichi Nishiwaki and other picrin contributors
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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