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/* Chrysalide - Outil d'analyse de fichiers binaires
* expr.h - prototypes pour la définition d'une expression servant aux conditions de correspondance
*
* Copyright (C) 2022 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide 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 of the License, or
* (at your option) any later version.
*
* Chrysalide 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ANALYSIS_SCAN_EXPR_H
#define _ANALYSIS_SCAN_EXPR_H
#include <glib-object.h>
#include <stdbool.h>
#include "context.h"
#include "scope.h"
#define G_TYPE_SCAN_EXPRESSION g_scan_expression_get_type()
#define G_SCAN_EXPRESSION(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_SCAN_EXPRESSION, GScanExpression))
#define G_IS_SCAN_EXPRESSION(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_SCAN_EXPRESSION))
#define G_SCAN_EXPRESSION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_SCAN_EXPRESSION, GScanExpressionClass))
#define G_IS_SCAN_EXPRESSION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_SCAN_EXPRESSION))
#define G_SCAN_EXPRESSION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_SCAN_EXPRESSION, GScanExpressionClass))
/* Expression d'évaluation généraliste (instance) */
typedef struct _GScanExpression GScanExpression;
/* Expression d'évaluation généraliste (classe) */
typedef struct _GScanExpressionClass GScanExpressionClass;
/* Etat de l'expression vis à vis des réductions */
typedef enum _ScanReductionState
{
SRS_PENDING, /* Nature à déterminer */
SRS_REDUCED, /* Nature compacte finale */
SRS_WAIT_FOR_SCAN, /* Nature vouée à évoluer */
SRS_UNRESOLVABLE, /* Nature indéterminable */
} ScanReductionState;
/* Indique le type défini pour une expression de validation. */
GType g_scan_expression_get_type(void);
/* Indique l'état de réduction d'une expression. */
ScanReductionState g_scan_expression_get_state(const GScanExpression *);
/* Réduit une expression à une forme plus simple. */
ScanReductionState g_scan_expression_reduce(GScanExpression *, GScanContext *, GScanScope *, GScanExpression **);
/* Réduit une expression à une forme booléenne. */
bool g_scan_expression_reduce_to_boolean(GScanExpression *, GScanContext *, GScanScope *, GScanExpression **);
/* Détermine si l'expression peut représenter un ensemble. */
bool g_scan_expression_handle_set_features(const GScanExpression *);
/* Dénombre les éléments portés par une expression. */
bool g_scan_expression_count_items(const GScanExpression *, GScanContext *, size_t *);
/* Fournit un élément donné issu d'un ensemble constitué. */
bool g_scan_expression_get_item(const GScanExpression *, size_t, GScanContext *, GScanExpression **);
/* Réalise l'intersection entre deux ensembles. */
GScanExpression *g_scan_expression_intersect(GScanExpression *, const GScanExpression *, GScanContext *, GScanScope *);
#endif /* _ANALYSIS_SCAN_EXPR_H */
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