Self-interest October 2001

self-interest@lists.selflanguage.org

3 participants
4 discussions

Self parser.
by mikael_aronsson＠mail.bip.net 30 Oct '01

30 Oct '01

Hi ! Do you know if there is any BNF parser for Self available somewhere, for bison or yacc or something like that ? I don't mean a parser generator in Self code, I mean an .y file for yacc example, that can be used to create a Self parser. It looks like the parser in the Sun version is in C++. Mikael

2 2

oldParser. using ?
by Marko Mikulicic 23 Oct '01

23 Oct '01

Hello, I finnally got a sparc machine (sparc station 10, dual supersparc 50 Mhz 128Mb ram. It's slooow but it works). I was browsing in the world an I found the oldParser parser object. I tried to let him parse something but I don't know if I'm using it correctly, since it parses only one level and doesn't descend. For example, the object '(add: 1+3 Bla: 4)' parses (using primary: ) to a "parseNodes methodObject" with empty statement list. Also parsing an expression (using expression:) '0 add: 1+3 Bla: 4' returns a parseNode keywordSend with correct receiver and selector slots filled-in but empty argument list. I don't understand if the code is broken or the parsing must be completed somehow. I know oldParser is discontinued but I would expect it to parse out some simple expression at least. I want to write a almost complete and standard Self parser in self using a subset of the framework (for simplified bootstrapping). Initially I want to use it in the OpenSelf project, which lacks support for loading a complete Self 4 system (no threading, mirrors, ... yet) but can handle strings and lists. I thought generating a parse tree and then have a separate code generator (generate structure and bytecodes from the tree) wich can be initially implemented without mirrors, and then plug in a complete mirror based object/code generator. What is the best approach for writing an OOP parser in self. Is good to separate the scanner from the parser or do like oldParser, all in once ? Anyone made some progress in writing a parser in the last year ? Any parsing guru aroud ? It's a shame that Self 4.1 still uses the parser inside the VM. Be Selfish and don't give away your code if you have it :-) Marko PS: I didn't have many time the last year, but I don't give up ! I want Self rule the world :-) Multiplatform, fast, distributed and mutiprocessor-aware ...

2 4

Self on Sparc-linux ?
by Marko Mikulicic 14 Oct '01

14 Oct '01

Hello, has anyone tried to compile/run the self VM on a linux sparc system ? I belive there are not so many differences. The biggest problem porting Self was the CPU, but leaving on a sparc it should run ok, no ? Once compiled for linux with the same glibc it could be ran though an instruction level emulator (there is one integrated in gdb) calling all shared libraries on the host. Endianness issues would probably have a performance impact but I think it will be faster on a dual PIII-1ghz than natively on a 50Mhz sparcstation (usable). Having the binary compiled for linux would simplify the emulation. Perhaps gdb could run it out of the box, but I'm not sure (perhaps it needs to be statically linked) Did Gordon need to change much of the makefile system to compile on linux ? Are other changes needed in the sources for non-architectural related things ? What do you think of this possibility to temporarly port Self to other architectures (after all apple ran its kernel in a instruction level emulator :-) ? Marko

1 0

no SelfFest this year
by Jecel Assumpcao Jr 13 Oct '01

13 Oct '01

Since I am very busy preparing for a local "high tech fair" next week, I decided not to have the second Self Festival this year. But hopefully this means it will be much better next year! -- Jecel

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Self-interest October 2001