Re: COMPILE-FILE without a file...

Alessio Stalla <alessiostalla@xxxxxxxxx> writes:

Suppose I have code in text form, coming from an arbitrary stream
(e.g. the network, or a compressed archive, or...): is (1)

(compile nil `(lambda () ,@(read stream)))

equivalent to (2)

(progn
(dump-to-file stream "file.lisp")
(compile-file "file.lisp"))

No, it's not. The first form executes the /run time compiler/, the
second one the /file compiler/. They differ in how they deal with
EVAL-WHEN, and how they coalesce constants.


? Probably not... (rhetorical question) but, exactly what kind of
disaster can I expect if I use (2) instead of (1)? I'd like to avoid
dealing with temporary files if I can...

Some implementations offer a COMPILE-FROM-STREAM. Look at how
SWANK-COMPILE-STRING is implemented in the different SWANK
backends. (The swank-foo.lisp files in the source checkout of Slime.)

-T.
.

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