Re: Beautifiul Mind: Thinking about Dijkstra

fOn 28 Apr 2006 19:37:09 -0700 in comp.databases.theory, "Tony D" <tonyisyourpal_at_netscape.net> wrote:

>Ha ! I'll top that with a "Pascal Implementation: The P4 Compiler" two
>(slim) volume set - one of the source code to the Pascal P4 compiler
>and interpreter (written in Pascal, of course !) and the other a
>discussion of that source.

http://homepages.cwi.nl/~steven/pascal
http://homepages.cwi.nl/~steven/pascal/book/pascalimplementation.html

>I'm sure I remember a professor explaining that Pascal's text file
>handling was like *that* so that it was possible/easy to write Pascal
>compilers in Pascal, and that the first compiler for the CDC was
>compiled by printing out two sets of the source code, laying them on
>the floor side by side and manually running one with the other as input
>...

http://www.moorecad.com/standardpascal/ansiiso.faq "In 1969, a bootstrap compiler using Fortran as the implementation language was completed. Although the compiler was written in Fortran, the idea was to rewrite the compiler in Pascal itself, and so bootstrap the compiler.
Wirth called that project unsuccessful, and instead, a Pascal compiler was written in a subset of the full Pascal language and translated by hand to a language called SCALLOP on the CDC 6000 computer, and thus bootstrapped."

-- 
Thanks. Take care, Brian Inglis 	Calgary, Alberta, Canada

Brian.Inglis_at_CSi.com 	(Brian[dot]Inglis{at}SystematicSW[dot]ab[dot]ca)
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