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Reference Guide
StaticCheck.h
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1// @(#)root/smatrix:$Id$
2// Authors: T. Glebe, L. Moneta 2005
3
4
5////////////////////////////////////////////////////////////////////////////////
6// The Loki Library
7// Copyright (c) 2001 by Andrei Alexandrescu
8// This code accompanies the book:
9// Alexandrescu, Andrei. "Modern C++ Design: Generic Programming and Design
10// Patterns Applied". Copyright (c) 2001. Addison-Wesley.
11// Permission to use, copy, modify, distribute and sell this software for any
12// purpose is hereby granted without fee, provided that the above copyright
13// notice appear in all copies and that both that copyright notice and this
14// permission notice appear in supporting documentation.
15// The author or Addison-Wesley Longman make no representations about the
16// suitability of this software for any purpose. It is provided "as is"
17// without express or implied warranty.
18////////////////////////////////////////////////////////////////////////////////
19
20// Last update: June 20, 2001
21
22#ifndef Root_Math_StaticCheck
23#define Root_Math_StaticCheck
24
25
26// case of dictionary generator
27#if defined(__MAKECINT__) || defined(G__DICTIONARY)
28
29#include "Math/MConfig.h"
30#include <iostream>
31#include <cassert>
32
33#define STATIC_CHECK(expr, msg) \
34 if (!(expr) ) std::cerr << "ERROR: " << #msg << std::endl; \
35 assert(expr);
36
37#else
38
39namespace ROOT
40{
41
42 namespace Math {
43
44#ifndef USE_OLD_SC
45
46
47 template<bool> struct CompileTimeChecker
48 {
50 };
51 template<> struct CompileTimeChecker<false> {};
52
53 } // end namespace Math
54} // end namespace ROOT
55
56#define STATIC_CHECK(expr, msg) \
57 { class ERROR_##msg {}; \
58 ERROR_##msg e; \
59 (void) (ROOT::Math::CompileTimeChecker<(expr) != 0> (&e)); }
60
61
62#else
63////////////////////////////////////////////////////////////////////////////////
64// Helper structure for the STATIC_CHECK macro
65////////////////////////////////////////////////////////////////////////////////
66
67 template<int> struct CompileTimeError;
68 template<> struct CompileTimeError<true> {};
69
70 } // end namespace Math
71} // end namespace ROOT
72
73////////////////////////////////////////////////////////////////////////////////
74// macro STATIC_CHECK
75// Invocation: STATIC_CHECK(expr, id)
76// where:
77// expr is a compile-time integral or pointer expression
78// id is a C++ identifier that does not need to be defined
79// If expr is zero, id will appear in a compile-time error message.
80////////////////////////////////////////////////////////////////////////////////
81
82#define STATIC_CHECK(expr, msg) \
83 { ROOT::Math::CompileTimeError<((expr) != 0)> ERROR_##msg; (void)ERROR_##msg; }
84
85
86////////////////////////////////////////////////////////////////////////////////
87// Change log:
88// March 20, 2001: add extra parens to STATIC_CHECK - it looked like a fun
89// definition
90// June 20, 2001: ported by Nick Thurn to gcc 2.95.3. Kudos, Nick!!!
91////////////////////////////////////////////////////////////////////////////////
92
93#endif
94
95#endif
96
97#endif // STATIC_CHECK_INC_
Namespace for new Math classes and functions.
Namespace for new ROOT classes and functions.
Definition: StringConv.hxx:21