From: v025@truman.edu (Chad R. Meiners)
Subject: Controlled type question
Date: 1999/02/14
Date: 1999-02-14T00:00:00+00:00 [thread overview]
Message-ID: <36c743da.0@silver.truman.edu> (raw)
I am constructing a generic hash table ADT with the gnat 3.11p compiler on win NT 4.0 SP3 and I have run into a
compilier error when I try to use the generic package.
On this line in my main program
Package Hash_table is new Hash_table_Interfaces(My_Data, --data type stored
aword, --data type of key to be hashed
"=", --function for my_data
"=", --Function for the key
Key, --Function to get the key from My_data
My_Hash); --Function to hash the key
I get the following errors
instantiation error at protected_hash_tables.ads :99
instantiation error at protected_hash_tables.ads :20
Controlled type must be declared at the library level
The lines in protected_hash_tables are
99 : Type cObject is new Limited_Controlled with record
Controler : Passive_Controller; --Protected type;
Copier : Background_Controller_ptr; --access to a task that
--enlarges the hash table in the background
end record;
20 : Type cObject is new Limited_Controller with private; --hash table object
the package compilied correctly so I think I might of run up against a rule in the ARM. If anyone could explain
what I did wrong please do so. I will post more code if you need it.
-Chad R. Meiners
next reply other threads:[~1999-02-14 0:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-14 0:00 Chad R. Meiners [this message]
1999-02-15 0:00 ` Controlled type question Matthew Heaney
1999-02-15 0:00 ` Chad R. Meiners
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