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5f49e3421f
The struct used to store the types (rb_data_type_t) contains a "data" field where we can store whatever we want. I use that field to store a pointer to the corresponding destroy function. For example notmuch_rb_database_type contains a pointer to notmuch_database_destroy. I cast that pointer as a notmuch_status_t (func*)(void *) and call that function passing the internal object (e.g. notmuch_database_t). Using the rb_data_type_t data we can call the correct notmuch destroy function. Therefore this: ret = ((notmuch_status_t (*)(void *)) type->data) (nm_object); Is effectively the same as this: ret = notmuch_database_destroy (database); The advantage of doing it this way is that much less code is necesary since each rb_data_type_t has the corresponding destroy function stored in it. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
75 lines
2 KiB
C
75 lines
2 KiB
C
/* The Ruby interface to the notmuch mail library
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*
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* Copyright © 2010, 2011 Ali Polatel
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see https://www.gnu.org/licenses/ .
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*
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* Author: Ali Polatel <alip@exherbo.org>
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*/
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#include "defs.h"
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/*
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* call-seq: MESSAGES.destroy! => nil
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*
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* Destroys the messages, freeing all resources allocated for it.
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*/
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VALUE
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notmuch_rb_messages_destroy (VALUE self)
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{
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notmuch_rb_object_destroy (self, ¬much_rb_messages_type);
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return Qnil;
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}
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/* call-seq: MESSAGES.each {|item| block } => MESSAGES
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*
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* Calls +block+ once for each message in +self+, passing that element as a
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* parameter.
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*/
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VALUE
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notmuch_rb_messages_each (VALUE self)
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{
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notmuch_message_t *message;
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notmuch_messages_t *messages;
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Data_Get_Notmuch_Messages (self, messages);
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for (; notmuch_messages_valid (messages); notmuch_messages_move_to_next (messages)) {
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message = notmuch_messages_get (messages);
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rb_yield (Data_Wrap_Notmuch_Object (notmuch_rb_cMessage, ¬much_rb_message_type, message));
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}
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return self;
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}
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/*
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* call-seq: MESSAGES.tags => TAGS
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*
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* Collect tags from the messages
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*/
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VALUE
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notmuch_rb_messages_collect_tags (VALUE self)
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{
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notmuch_tags_t *tags;
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notmuch_messages_t *messages;
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Data_Get_Notmuch_Messages (self, messages);
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tags = notmuch_messages_collect_tags (messages);
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if (!tags)
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rb_raise (notmuch_rb_eMemoryError, "Out of memory");
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return Data_Wrap_Notmuch_Object (notmuch_rb_cTags, ¬much_rb_tags_type, tags);
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}
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