From: Olivier Scalbert <olivier.scalbert@algosyn.com>
Subject: Load an object from a file
Date: Fri, 03 Apr 2009 14:01:15 +0200
Date: 2009-04-03T14:01:15+02:00 [thread overview]
Message-ID: <49d5fa88$0$2862$ba620e4c@news.skynet.be> (raw)
Hello everybody !
In my Ada self-study context, I was asking myself how can I create and
fill objects or records from a file.
As an example, I have tried to represent a java class file format
structure and fill it with a .class java file.
The ClassFile structure is something like:
ClassFile {
u4 magic;
u2 minor_version;
u2 major_version;
u2 constant_pool_count;
cp_info constant_pool[constant_pool_count-1];
u2 access_flags;
u2 this_class;
u2 super_class;
u2 interfaces_count;
u2 interfaces[interfaces_count];
u2 fields_count;
field_info fields[fields_count];
u2 methods_count;
method_info methods[methods_count];
u2 attributes_count;
attribute_info attributes[attributes_count];
}
JVM Specs can be found there:
http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html
I have no problem to represent and to fill from file, the first four fields.
But I do not know what is the best (Ada) way of representing the array
of info constant_pool as the size is only known at run time.(=
constant_pool_cout).
Also how can I fill this array ?
Thanks to help me and have a nice day.
Olivier
next reply other threads:[~2009-04-03 12:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-03 12:01 Olivier Scalbert [this message]
2009-04-03 13:07 ` Load an object from a file Niklas Holsti
2009-04-03 13:37 ` Ludovic Brenta
2009-04-03 15:19 ` Olivier Scalbert
2009-04-03 16:08 ` Georg Bauhaus
2009-04-03 16:22 ` Ludovic Brenta
2009-04-03 16:41 ` Olivier Scalbert
2009-04-03 16:46 ` Adam Beneschan
2009-04-03 20:22 ` Ludovic Brenta
2009-04-09 20:32 ` Olivier Scalbert
2009-04-09 21:22 ` Ludovic Brenta
2009-04-09 22:22 ` Olivier Scalbert
2009-04-19 13:08 ` Olivier Scalbert
2009-04-19 19:52 ` Ludovic Brenta
2009-04-19 20:27 ` Gautier
2009-04-03 13:41 ` Thomas Løcke
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