if_control.h

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#ifndef IF_CONTROL_H
#define IF_CONTROL_H

/***************************************************************************
 *   Copyright (C) 2004, 2006 Symbian Software Ltd.                        *
 *   All rights reserved.                                                  *
 *   Copyright (C) 2002, 2003 Tony Finch <dot@dotat.at>.                   *
 *   All rights reserved.                                                  *
 *   Copyright (C) 1985, 1993 The Regents of the University of California. *
 *   All rights reserved.                                                  *
 *   Copyright (C) 2007-2011 Mike Kinghan, imk@strudl.org                  *
 *   All rights reserved.                                                  *
 *                                                                         *
 *   Contributed by Mike Kinghan, imk@strudl.org, derived from the code    *
 *   of Tony Finch                                                         *
 *                                                                         *
 *   Redistribution and use in source and binary forms, with or without    *
 *   modification, are permitted provided that the following conditions    *
 *   are met:                                                              *
 *                                                                         *
 *   Redistributions of source code must retain the above copyright        *
 *   notice, this list of conditions and the following disclaimer.         *
 *                                                                         *
 *   Redistributions in binary form must reproduce the above copyright     *
 *   notice, this list of conditions and the following disclaimer in the   *
 *   documentation and/or other materials provided with the distribution.  *
 *                                                                         *
 *   Neither the name of Symbian Software Ltd. nor the names of its        *
 *   contributors may be used to endorse or promote products derived from  *
 *   this software without specific prior written permission.              *
 *                                                                         *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   *
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     *
 *   LIMITED TO, THE IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS    *
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE        *
 *   COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,   *
 *   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,  *
 *   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS *
 *   OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED    *
 *   AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,*
 *   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF *
 *   THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH  *
 *   DAMAGE.                                                               *
 *                                                                         *
 **************************************************************************/
#include "evaluator.h"


typedef enum {
    IF_STATE_OUTSIDE,
    IF_STATE_FALSE_PREFIX,
    IF_STATE_TRUE_PREFIX,
    IF_STATE_PASS_MIDDLE,
    IF_STATE_FALSE_MIDDLE,
    IF_STATE_TRUE_MIDDLE,
    IF_STATE_PASS_ELSE,
    IF_STATE_FALSE_ELSE,
    IF_STATE_TRUE_ELSE,
    IF_STATE_FALSE_TRAILER,
    IF_STATE_COUNT
} if_state_t;

extern void
transition(line_type_t linetype);

extern bool
dead_line(void);

extern bool
was_unconditional_line(void);

extern bool
is_unconditional_line(void);

extern size_t
if_start_line(void);

extern size_t
if_depth(void);

extern if_state_t
if_state(void);

void
if_control_toplevel(void);


IMPORT_INITOR(if_control);
IMPORT_FINITOR(if_control);
#endif /* EOF*/