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added nana stuff
added lock option in docked icons
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kojima
234
src/I.h
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234
src/I.h
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/*
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* I.h - support for invariants (assertions) using C code.
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*
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* Copyright (c) 1997 Phil Maker
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Id: I.h,v 1.1.1.1 1997/11/23 11:45:50 pjm Exp
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*/
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#ifndef _I_h_
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#define _I_h_ 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef WITHOUT_NANA
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/*
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* nana-config.h - the system wide configuration file; we put the ifndef
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* around it to avoid the file 5 million times during a compile.
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*/
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#ifndef _nana_config_h_
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#include <nana-config.h>
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#endif
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/*
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* I_LEVEL sets the level of invariant analogously to NDEBUG in assert.h
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*
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* I_LEVEL == 2: invariants are always evaluated.
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* I_LEVEL == 1: evaluate invariants iff they have a true GUARD.
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* I_LEVEL == 0: invariants are never evaluated.
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*/
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#ifndef I_LEVEL /* define DEFAULT for I_LEVEL */
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#define I_LEVEL 1
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#endif
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/*
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* I_DEFAULT_GUARD - the default guard expression; an invariant is checked
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* iff the guard is true. By default its always true.
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*/
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#ifndef I_DEFAULT_GUARD
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#define I_DEFAULT_GUARD (1)
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#endif
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/*
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* I_DEFAULT_PARAMS - the default value to be passed as the second argument
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* to the handler macro when an invariant fails.
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*/
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#ifndef I_DEFAULT_PARAMS
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#define I_DEFAULT_PARAMS /* nothing */
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#endif
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/*
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* I_DEFAULT_HANDLER(expr,file,line,param) - called when an error is detected.
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*/
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#ifndef I_DEFAULT_HANDLER /* define default handler */
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void _I_default_handler(char *expr, char *file, int line);
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#define I_DEFAULT_HANDLER(expr,file,line,param) \
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_I_default_handler(expr,__FILE__,__LINE__)
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#endif /* I_DEFAULT_HANDLER */
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/*
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* _IGHPS(e,g,h,p,s) - implements the general case for invariant handling.
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*
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* e - expression to check
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* g - guard, check only if this is true (subject to I_DEFAULT_LEVEL)
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* h - handler, called when a failure is detected
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* p - parameter to pass off to the handler
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* s - string representation of the expression (e.g. "I(x>=i)")
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*
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* _ISD(e) - generates a data declaration for use in postconditions
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* _ISG(e,g) - generates a guarded assignment to a data declaration
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* for use in postconditions
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*
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* N.B. The two types are necessary since we cannot guard a C declaration
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* with an if statement.
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*/
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#if I_LEVEL == 2 /* always check the assertion */
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#define _IGHPS(e,g,h,p,s) \
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do { \
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if(!(e)) { \
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h (s, __FILE__, __LINE__, p); \
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} \
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} while(0)
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#define _ID(e) e
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#define _ISG(e,g) e
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#elif I_LEVEL == 1 /* check it iff g is true */
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#define _IGHPS(e,g,h,p,s) \
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do { \
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if(g) { \
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if(!(e)) { \
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h (s, __FILE__, __LINE__, p); \
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} \
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} \
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} while(0)
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#define _ID(e) e
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#define _ISG(e,g) \
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do { \
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if(g) { \
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e; \
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} \
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} while(0)
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#elif I_LEVEL == 0 /* no assertions so just remove them */
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#define _IGHPS(e,g,h,p,s) /* nothing */
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#define _ID(e) /* nothing */
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#define _ISG(e,g) /* nothing */
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#endif /* I_LEVEL */
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/*
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* And all the user macros; these are used to put in the default arguments.
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* The name is used to determine the arguments; e.g. IGH takes an expression
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* to check; a guard and a handler as parameters. The letters in the names
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* are in ascending order (i.e. IGH(...) not IHG(...)).
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*
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* I[G][H][P] - it must be true (e) with an optional guard, handler and
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* parameter for the handler.
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* N[G][H][P] - as for I... except that (e) must never ever be true.
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*/
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#define I(e) \
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_IGHPS(e,I_DEFAULT_GUARD,I_DEFAULT_HANDLER,I_DEFAULT_PARAMS,"I("#e")")
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#define IG(e,g) \
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_IGHPS(e,g,I_DEFAULT_HANDLER,I_DEFAULT_PARAMS,"I("#e")")
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#define IH(e,h) \
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_IGHPS(e,I_DEFAULT_GUARD,h,I_DEFAULT_PARAMS,"I("#e")")
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#define IP(e,p) \
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_IGHPS(e,I_DEFAULT_GUARD,I_DEFAULT_HANDLER,p,"I("#e")")
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#define IGH(e,g,h) \
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_IGHPS(e,g,h,I_DEFAULT_PARAMS,"I("#e")")
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#define IGP(e,g,p) \
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_IGHPS(e,g,I_DEFAULT_HANDLER,p,"I("#e")")
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#define IHP(e,h,p) \
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_IGHPS(e,I_DEFAULT_GUARD,h,p,"I("#e")")
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#define IGHP(e,g,h,p) \
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_IGHPS(e,g,h,p,"I("#e")")
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#define N(e) \
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_IGHPS((!(e)),I_DEFAULT_GUARD,I_DEFAULT_HANDLER,I_DEFAULT_PARAMS,"N("#e")")
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#define NG(e,g) \
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_IGHPS((!(e)),g,I_DEFAULT_HANDLER,I_DEFAULT_PARAMS,"N("#e")")
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#define NH(e,h) \
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_IGHPS((!(e)),I_DEFAULT_GUARD,h,I_DEFAULT_PARAMS,"N("#e")")
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#define NP(e,p) \
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_IGHPS((!(e)),I_DEFAULT_GUARD,I_DEFAULT_HANDLER,p,"N("#e")")
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#define NGH(e,g,h) \
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_IGHPS((!(e)),g,h,I_DEFAULT_PARAMS,"N("#e")")
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#define NGP(e,g,p) \
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_IGHPS((!(e)),g,I_DEFAULT_HANDLER,p,"N("#e")")
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#define NHP(e,h,p) \
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_IGHPS((!(e)),I_DEFAULT_GUARD,h,p,"N("#e")")
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#define NGHP(e,g,h,p) \
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_IGHPS((!(e)),g,h,p,"N("#e")")
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/*
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* ID(e) - declares a variable to be used to store values for a postcondition.
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* This can include an initialiser.
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* Note this declaration is not disabled by I_DEFAULT_GUARD
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* IS(e) - an assignment to a variable. This statement is enabled by
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* I_DEFAULT_GUARD
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* ISG(e,g) - the guarded version of IS
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*/
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#define ID(e) _ID(e)
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#define IS(e) _ISG(e,I_DEFAULT_GUARD)
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#define ISG(e,g) _ISG(e,g)
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#else /* defined(WITHOUT_NANA) */
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#define I(e) /* empty */
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#define IG(e,g) /* empty */
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#define IH(e,h) /* empty */
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#define IP(e,p) /* empty */
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#define IGH(e,g,h) /* empty */
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#define IGP(e,g,p) /* empty */
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#define IHP(e,h,p) /* empty */
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#define IGHP(e,g,h,p) /* empty */
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#define N(e) /* empty */
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#define NG(e,g) /* empty */
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#define NH(e,h) /* empty */
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#define NP(e,p) /* empty */
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#define NGH(e,g,h) /* empty */
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#define NGP(e,g,p) /* empty */
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#define NHP(e,h,p) /* empty */
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#define NGHP(e,g,h,p) /* empty */
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#define ID(e) /* empty */
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#define IS(e) /* empty */
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#define ISG(e,g) /* empty */
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#endif /* !defined(WITHOUT_NANA) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _I_h_ */
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