Hi Tomas (and other IronRuby devs). I'm trying to implement this, but I'm
not sure quite how to go about dynamically invoking the 'message' and
'backtrace' methods on the other objects.
It looks like the other methods all have a UnaryOpStorage or other kind of
'storage' that they use to invoke other dynamic methods
- how do I know what kind of Storage object I need to invoke methods on
other objects?
- I'm not sure where I get these storage objects from? It appears that in
this case the language runtime will pass them in as needed, but if I need
to call a ruby method from another location (eg inside Marshal.cs), how do
I go about getting the storage object?
Thanks, Orion
From: Tomas Matousek
<reply+c-683915-ae54ce679190ef3de090cba9240521883afb6...@reply.github.com>
To: Gallagher Group R&D Department <ori...@gallagher.co.nz>
Date: 31/10/2011 06:55 a.m.
Subject: Re: [ironlanguages-main] Ruby 1.9 marshalling
compatibility. (630995e)
This doesn't seem to be quite right.
Unfortunately Ruby's exception object might be a bit messed up. Message
might not be a string, backtrace is always an array (or nil) but it might
not containg strings. It seems that Ruby calls "==" on the message object
and then on each item of the backtrace.
It doesn't look like Ruby is comparing exception classes.
Also an exception can be compared with any object that has "message" and
"backtrace" methods.
---
class C
def message
"hello"
end
def backtrace
["1","2","3"]
end
end
class D
def ==(other)
p "=="
true
end
end
c = C.new
m = D.new
e = Exception.new(m)
a = ["1","2","3"]
e.set_backtrace(a)
a[1] = D.new
p e == c
p e.backtrace.inspect, e.message
p c.backtrace.inspect, c.message
p IOError.new("1") == Exception.new("1")
--
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