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/*
This file is part of GNUnet
(C) 2009, 2010 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file monkey/gnunet_monkey_edb.h
* @brief Monkey API for accessing the Expression Database (edb)
*/
#ifndef GNUNET_MONKEY_EDB_H
#define GNUNET_MONKEY_EDB_H
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
struct GNUNET_MONKEY_EDB_Context;
/**
* Establish a connection to the Expression Database
*
* @param db_file_name path the Expression Database file
* @return context to use for Accessing the Expression Database, NULL on error
*/
struct GNUNET_MONKEY_EDB_Context *GNUNET_MONKEY_EDB_connect (const char
*db_file_name);
/**
* Disconnect from Database, and cleanup resources
*
* @param context context
* @return GNUNET_OK on success, GNUNET_NO on failure
*/
int GNUNET_MONKEY_EDB_disconnect (struct GNUNET_MONKEY_EDB_Context *cntxt);
typedef int (*GNUNET_MONKEY_ExpressionIterator) (void *, int, char **,
char **);
/**
* Return the line number of the end-of-scope for the expression indicated by start_line_no
*
* @param cntxt context containing the Expression Database handle
* @param file_name path to the file in which the expression in question exists
* @param start_line_no expression's line
* @param iter callback function, iterator for values returned from the Database
* @param iter_cls closure for the expression iterator, will contain the scope-end line number
* @return GNUNET_OK on success, GNUNET_NO on failure
*/
int
GNUNET_MONKEY_EDB_get_expression_scope_end(struct GNUNET_MONKEY_EDB_Context *cntxt,
const char *file_name, int start_line_no,
GNUNET_MONKEY_ExpressionIterator iter,
void *iter_cls);
/**
* Run an SQLite query to retrieve those expressions that are previous to
* given expression and are in the same scope of the given expression
* For example, consider the following code snippet:
*
* {
* struct Something whole; // line no.1
* struct SomethingElse part; // line no.2
* whole.part = ∂ // line no.3
* whole.part->member = 1; // line no.4
* }
*
* If the expression supplied to the function is that of line no.4 "whole.part->member = 1;"
* The returned list of expressions will be: whole.part (line no.4), whole.part->member (line no.4),
* whole (line no.3), whole.part (line no.3), &part (line no.3), whole.part = &part (line no.3)
*
* @param cntxt context containing the Expression Database handle.
* @param file_name path to the file in which the expression in question exists
* @param start_line_no expression beginning line
* @param end_line_no line number for the expression's scope end
* @param iter callback function, iterator for expressions returned from the Database
* @param iter_cls closure for the expression iterator
* @return GNUNET_OK success, GNUNET_NO failure
*/
int
GNUNET_MONKEY_EDB_get_expressions (struct GNUNET_MONKEY_EDB_Context *cntxt,
const char *file_name, int start_line_no,
int end_line_no,
GNUNET_MONKEY_ExpressionIterator iter,
void *iter_cls);
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
#endif
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