Posted by
Paolo Bonzini-2 on
Feb 04, 2012; 1:19pm
URL: https://forum.world.st/typo-in-MessageLookup-tp4336704p4357066.html
On 02/03/2012 07:49 PM, Ladislav Marek wrote:
> diff --git a/packages/stinst/parser/STLoaderObjs.st
> b/packages/stinst/parser/STLoaderObjs.st
> index 6eda6e1..72deded 100644
> --- a/packages/stinst/parser/STLoaderObjs.st
> +++ b/packages/stinst/parser/STLoaderObjs.st
> @@ -812,6 +812,7 @@ superclass
> !
>
> doesNotUnderstand: aMessage
> + aMessage startingClass: proxy class.
> ^proxy perform: aMessage
> ! !
Actually, #doesNotUnderstand: can do one of three things:
1) do everything by itself;
2) forward the message to another object;
3) create the missing method and retry it.
(3) is relatively rare, but it is the scenario for which I introduced
MessageLookup. It turns out that the new MessageLookup>>#sendTo: is
only good for (3), and the old implementation from the Message class is
appropriate for (2).
I'm applying this patch to differentiate how you restart execution in
the two cases:
diff --git a/kernel/MessageLookup.st b/kernel/MessageLookup.st
index bbc18f2..dc9e831 100644
--- a/kernel/MessageLookup.st
+++ b/kernel/MessageLookup.st
@@ -71,8 +71,9 @@ but also the starting class for the search.'>
^self startingClass lookupSelector: self selector
]
- sendTo: receiver [
- "Send the message to the given receiver"
+ retrySendTo: receiver [
+ "Send the message to the given receiver, looking up the
+ method starting at #startingClass."
<category: 'basic'>
^receiver perform: self method withArguments: self arguments
Paolo
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