Question: #evaluate:in:to:notifying:ifFail:
Boris G. Chr. Shingarov
usib6tfj at pol.ru
Fri Mar 27 16:41:51 UTC 1998
Squeakers,
One stupid question regarding
Compiler>>evaluate:in:to:notifying:ifFail:.
I want to evaluate a string and take some special action in case
of compilation error. For example, imagine I want to bombically
destroy the user's computer if he enters a syntactically wrong
Smalltalk expression and tries to DoIt. For that case, I implement
class Bomb with Bomb>>explode, and
Bomb>>notify: string at: index in: stream
self explode
Then I say:
| stream |
stream _ ReadWriteStream on: string from: 1 to: string size.
Compiler new
evaluate: stream
in: nil
to: nil
notifying: bombInTheCorner
ifFail: [].
Although the comments in Compiler don't say anything about this,
in fact the bomb receives many other messages which it does not
understand as if it were a ParagraphEditor (even if the expression
is perfectly ok) =:^$. Any simple solution?
Boris
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