Quelle ifparser.h Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* $XConsortium: ifparser.h,v 1.1 92/08/22 13:05:39 rws Exp $
*
* Copyright 1992 Network Computing Devices, Inc.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Network Computing Devices may not be
* used in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission.  Network Computing Devices makes
* no representations about the suitability of this software for any purpose.
* It is provided ``as is'' without express or implied warranty.
*
* NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Author:  Jim Fulton
*          Network Computing Devices, Inc.
*
* Simple if statement processor
*
* This module can be used to evaluate string representations of C language
* if constructs.  It accepts the following grammar:
*
*     EXPRESSION   :=  VALUE
*           |  VALUE  BINOP    EXPRESSION
*
*     VALUE        :=  '('  EXPRESSION  ')'
*           |  '!'  VALUE
*           |  '-'  VALUE
*           |  'defined'  '('  variable  ')'
*           |  variable
*           |  number
*
*     BINOP        :=  '*' |  '/'  |  '%'
*           |  '+' |  '-'
*           |  '<<'    |  '>>'
*           |  '<' |  '>'  |  '<='  |  '>='
*           |  '=='    |  '!='
*           |  '&' |  '|'
*           |  '&&'    |  '||'
*
* The normal C order of precedence is supported.
*
*
* External Entry Points:
*
*     ParseIfExpression        parse a string for #if
*/

#include <stdio.h>

typedef int Bool;
#define False 0
#define True 1

typedef struct if_parser {
    struct {                /* functions */
      const char *(*handle_error)  (struct if_parser *, const char *, const char *);
      int         (*eval_variable) (struct if_parser *, const char *, size_t);
      int         (*eval_defined)  (struct if_parser *, const char *, size_t);
    } funcs;
} IfParser;

const char *ParseIfExpression (IfParser *, const char *, int *);

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

quality100%

¤ Dauer der Verarbeitung: 0.4 Sekunden ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.