vrm@blackwater.cerc.wvu.wvnet.edu (Vasile R. Montan) (12/17/90)
I recently posted a request for hints on writing an interpreter. Someone suggested that I not start from scratch, but rather begin with the shell of an interpreter which somebody else has already written. This would save me an incredible amount of work, since I have very little idea how to write an interpreter. If someone has the shell of an interpreter which includes the major parts of a language (looping, branching, parsing, variable management, etc.) into which I could add my own commands, would you consider sending me a copy? I am working in Pascal, although this would be such a boon that I would try to learn C if some C code were available. I want the interpreter for a 'build-it-yourself' kind of program, a kind of a very specialized Hypercard. I want to be able to have the user's scripts respond to various things that happen. Thank you very much! --Kurisuto (who is not Vasile) un020070@vaxa.wvnet.edu
Andrew Gilmartin (12/18/90)
In article <1115@babcock.cerc.wvu.wvnet.edu> vrm@blackwater.cerc.wvu.wvnet.edu (Vasile R. Montan) writes: >If someone has the shell of an interpreter which includes the >major parts of a language (looping, branching, parsing, variable >management, etc.) into which I could add my own commands, would >you consider sending me a copy? ExTalk is available for anonymous FTP from brownvm.brown.edu. Once, connected, cd to "andrew.1a0". Note: interpreting the code that is not hard, but managing variables of different data types is. > I am working in Pascal, although >this would be such a boon that I would try to learn C if some C >code were available. Wirth's Algorithms + Data Structues = Programs has pascal code for a pascal like language. The chapter is quite lucid, however the book's code tends to be obscure and often buggy.
Lawson.English@p88.f15.n300.z1.fidonet.org (Lawson English) (12/19/90)
Vasile R. Montan writes in a message to All
VRM> If someone has the shell of an interpreter which includes the
VRM> major parts of a language (looping, branching, parsing, variable
VRM> management, etc.) into which I could add my own commands, would
VRM> you consider sending me a copy? I am working in Pascal, although
VRM> this would be such a boon that I would try to learn C if some
VRM> C code were available.
Look for a book called "Programming Languages: An Interpreter-Based Approach"
by Samuel N. Kamin, Addison-Wesely, ISBN 0-201-06824-9. It gives complete
source
code in Pascal for LISP, APL, SCHEME, SASL, CLU, SmallTalk, and PROLOG
interpreters
(or at least sub-sets of those languages).
Lawson
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