nxs_macro.h

/*
 *  cpm_macro.h
 *  cpm
 *
 *  globally useful or interesting macros
 *  - this module is inherently thread-safe
 *
 *  Created by Justin Spahr-Summers on 8/2/07.
 *  Copyright 2007. All rights reserved.
 *
 */

#ifndef CPM_HEADERS_MACRO
#define CPM_HEADERS_MACRO

// concatenates the fully expanded contents of 'a' and 'b'
#define     CPM_MACRO_CONCAT(a, b) \
            CPM_MACRO_CONCAT_END_(a, b)

// concatenates the fully expanded contents of 'a', 'b', and 'c'
#define     CPM_MACRO_CONCAT3(a, b, c) \
            CPM_MACRO_CONCAT(CPM_MACRO_CONCAT (a, b      ), c)

// concatenates the fully expanded contents of 'a', 'b', 'c', and 'd'
#define     CPM_MACRO_CONCAT4(a, b, c, d) \
            CPM_MACRO_CONCAT(CPM_MACRO_CONCAT3(a, b, c   ), d)

// concatenates the fully expanded contents of 'a', 'b', 'c', 'd', and 'e'
#define     CPM_MACRO_CONCAT5(a, b, c, d, e) \
            CPM_MACRO_CONCAT(CPM_MACRO_CONCAT4(a, b, c, d), e)

// makes a NUL-terminated string out of the fully expanded contents of 's'
#define     CPM_MACRO_STRING(s) \
            CPM_MACRO_STRING_END_(s)

/* INTERNAL USE ONLY */
#define     CPM_MACRO_CONCAT_END_(a, b) a ## b

#define     CPM_MACRO_STRING_END_(s) #s

#endif

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