Fetching latest commit…
Cannot retrieve the latest commit at this time.
This directory contains some example GNU Smalltalk programs. The programs are: bench.st An extraordinarily precise low-level benchmark for Smalltalk, by His Majesty contributed by Dwight Hughes and originarily prepared for Dan Ingalls! Squeak. It executes two pieces of code and deduces the system's speed in terms of bytecodes/second on bytecode-heavy code (arithmetics - sieve in this case) and sends/second on send-heavy code (a recursive Fibonacci computation in this case) -- they usually coincide to two digits with the speeds given by the GST runtime! CairoBlit.st A simple example of the Cairo and SDL bindings. by tonyg Case.st A nice object for C-switch like behavior. Although it is slower by Ulf than compiler-optimized ifs, try it: it really works nice. Dambacher CStream.st A stream providing functionality for writing C code. by sbb Dinner.st The classic dining philosophers problem. You need working by me Delays to try this (alarm is not very good but maybe it works). Try `(Philosophers new: 5) dine'. EditStream.st A stream handling fast insertions, using a double buffer by Ulf with a gap between the buffers. Dambacher LazyCollection.st Implementation of #collect:, #select:, #reject: that do not by me create a new collection unless really necessary. Sync.st Many kinds of synchronization devices. by me GenClasses.st Provides help in creating many similarly named classes. by sbb Lisp.st A nice Lisp interpreter class; try "LispInterpreter by Aoki Atsushi exampleXX" with XX going from 01 to 18. I modified it Nishihara Satoshi to remove the Smalltalk-subset compiler that was needed on proprietary systems that don't allow a compiler to be enclosed in a run-time image -- it was 25% of the total code; this way there is more focus on the Lisp stuff. MemUsage.st This is really more of a test suite kind of program. It by sbb iterates through all the objects in the system, counting up how much storage has been used by each, and printing a total at the end. It has found more bugs in the memory management system than I (sbb) care to admit. Methods.st Examples of subclassing CompiledMethod... 'nuff said! by Ian Piumarta and me MiniDebugger.st A simplified debugger which shows how to use the single step by me primitives to implement an interface that vaguely resembles gdb. PackageBuilder.st A simple script to make package.xml file from a Smalltalk by Stefan Schmiedl description. You may find it useful! Prolog.st This is absolutely stunning! A Prolog interpreter written in by Aoki Atsushi Smalltalk, from the same author as the Lisp interpreter; try Nishihara Satoshi PrologInterpreter exampleXX with XX going from 01 to 06 PrtHier.st prints out the class hierarchy, indented according to by sbb the number of super classes a class has. Publish.st An object-oriented, multiple format class file-out system. by me/sbb Currently includes Postscript for file-outs, and HTML/Texinfo for documentation -- by the way, this example is used by the makefile for GNU Smalltalk's info files. And also an example of namespaces. PushBack.st A Stream with unlimited push-back capabilities. Together with by sbb Tokenizer.st, it is used in many places (C interface, compiler) Queens.st An elegant solution of the queens and amazons problem (amazons by me can move like either the queen or the knight). There are: 2 solutions (1 discarding rotations/reflections) on a 4x4 board 92 solutions (12) on a 8x8 board no solutions (!) to the amazons problem on a 8x8 board 4 solutions (1) to the amazons problem on a 10x10 board A few examples usages are at the end of the file. Richards.st The Richards benchmark (a simulation of an operating systems) by unknown under Smalltalk, a classic in Smalltalk benchmarking because of its use of polymorphism and OO. shell An example of how to make a Smalltalk script work both if you by Alexander file it in from GNU Smalltalk and if you launch it from the Lazarevic shell; for it to work, the gst executable must be in the path. If it is not, just do PATH=$PATH:<gst path> before running it. SortCriter.st A very nice object that allows you to easily create by Peter SortedCollections sorted using complex objects (specifying William Lount which fields are more important and which must be sorted in descending order). Tokenizer.st An abstract base class for lexical analyzers. by me/sbb TokenStream.st Formerly a part of the class hierarchy. Now replaced with by sbb CharacterArray>>#subStrings. Generator.st Python/Ruby-like generators, using continuations. Gen2.st Same, using contexts (slower). Gen3.st Same, using processes (in the middle). by me The directory also contains some bindings for external libraries; currently these are GDBM, ZLib and MD5 bindings. The directory also contains two examples of using Blox: Man.st Man page viewer widget (example of using BExtended). To test by me it evaluate "ManViewer openOn: 'path' ". Tetris.st A Tetris game written using BLOX. To start it, use by me "Tetris play". Cursor keys move the piece, Up rotates it, Return drops it. More examples can be found in the blox/BloxExtend.st and blox/test.st file In addition, this directory contains two scripts that can help converting from other Smalltalk source code formats to the traditional file in (chunk) format. These are: - `pepe.sed', that converts from the Pepe format, a portable format consisting exclusively of executable code (an example is in tests/ansi/ansi.pepe; this script can be slow. - `xml.sed', that converts from an XML DTD designed for Smalltalk source. This script does not convert `statics' (that's how the DTD calls class variables) yet. Requires GNU sed. The `unsupported/misc' directory contains some other small example GNU Smalltalk programs which test more advanced aspects of Smalltalk, either various packages or the VM. Among others, `torture.st' is Andreas Klimas' nice memory torture test program - like MemUsage.st it has found more bugs in the memory management system than I care to admit... Paolo Bonzini