[antlr-interest] CSharp2: serialize/deserialize as AST

[Ben Gillis]

> Did you you already try it or do you just assume that it doesn't work?
Somehow, I missed BaseTree.AddChild.  That'll do the trick.
CommonTree.Parent initially jumped out at me, and I chased the wrong rabbit. 
My bad.


----- Original Message ----- 
From: "Johannes Luber" <jaluber at gmx.de>
To: "Ben Gillis" <wbgillis at gmail.com>
Cc: <antlr-interest at antlr.org>
Sent: Thursday, January 22, 2009 1:17 AM
Subject: Re: [antlr-interest] CSharp2: serialize/deserialize as AST


> Ben Gillis schrieb:
>>> Doesn't the usual approach via Binary/XML formatters work? If
>> Yes, with a CommonTree wrapper or SurrogateSelector.
>>
>> But, how do you handle the CommonTree.Parent member upon
>> deserialization? Again, looking at the ANTLR code, it's a pointer,
>> right?  Merely restoring a serialized value won't work for that.
>
> Actually, I don't know how pointers are treated, but I'd be surprised if
> the standard formatters don't handle this case themselves as it is a
> general case with using references instead value types in member fields.
> Did you you already try it or do you just assume that it doesn't work?
>
> If it really doesn't work, then you could create your own (De)Serializer
> and replace pointers by an object id field. IIRC, on CodeProject is an
> article on doing so.
>
> Johannes
>>
>>
>>
>> ----- Original Message ----- From: "Johannes Luber" <jaluber at gmx.de>
>> To: "Ben Gillis" <wbgillis at gmail.com>
>> Cc: <antlr-interest at antlr.org>
>> Sent: Thursday, January 22, 2009 12:41 AM
>> Subject: Re: [antlr-interest] CSharp2: serialize/deserialize as AST
>>
>>
>>> Ben Gillis schrieb:
>>>> I want to serialize/deserialize an AST, binary format, using C#.
>>>>
>>>> But, I'm not clear how the AST is reconstructed on deserialization
>>>> concerning the IToken.Parent.
>>>>
>>>> I see some serialization in ANTLR, e.g.
>>>> Antlr.Runtime.Debug.DebugEventSocketProxy.SerializeToken.  This would 
>>>> be
>>>> a pointer; therefore, some recursive approach to using built-in 
>>>> AddChild
>>>> methods or something must be done???
>>>>
>>>> Before I brew up something, perhaps this is (a) already done/available?
>>>> (b) easier than I'm making it???
>>>
>>> Doesn't the usual approach via Binary/XML formatters work? If the
>>> classes in 3.1.1 don't have the required attributes, then get a
>>> snapshot, as those should be in the repo files.
>>>
>>> Johannes
>>>>
>>>> Thanks,
>>>> Ben
>>>>
>>>>
>>>>
>>>>
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>>
>