1 | // |
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2 | // Lol Engine |
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3 | // |
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4 | // Copyright: (c) 2010-2013 Sam Hocevar <sam@hocevar.net> |
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5 | // This program is free software; you can redistribute it and/or |
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6 | // modify it under the terms of the Do What The Fuck You Want To |
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7 | // Public License, Version 2, as published by Sam Hocevar. See |
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8 | // http://www.wtfpl.net/ for more details. |
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9 | // |
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10 | |
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11 | #if !defined __LOL_BASE_ASSERT_H__ |
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12 | #define __LOL_BASE_ASSERT_H__ |
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13 | |
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14 | #include <cstdlib> |
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15 | |
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16 | namespace lol |
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17 | { |
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18 | |
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19 | static inline void Abort() |
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20 | { |
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21 | #if defined __CELLOS_LV2__ |
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22 | *(uint32_t *)NULL = 0xdead; |
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23 | #else |
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24 | std::abort(); |
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25 | #endif |
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26 | } |
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27 | |
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28 | /* FIXME: see http://stackoverflow.com/q/3596781/111461 for discussions |
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29 | * on implementing __debugbreak() on POSIX systems. */ |
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30 | static inline void DebugBreak() |
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31 | { |
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32 | #if defined _WIN32 |
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33 | __debugbreak(); |
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34 | #endif |
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35 | } |
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36 | |
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37 | extern void DumpStack(); |
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38 | |
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39 | #define LOL_CALL(macro, args) macro args |
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40 | #define LOL_EVAL(a) a |
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41 | #define LOL_1ST(a, ...) a |
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42 | |
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43 | #define LOL_GET_63RD(a01, a02, a03, a04, a05, a06, a07, a08, a09, a10, \ |
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44 | a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, \ |
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45 | a21, a22, a23, a24, a25, a26, a27, a28, a29, a30, \ |
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46 | a31, a32, a33, a34, a35, a36, a37, a38, a39, a40, \ |
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47 | a41, a42, a43, a44, a45, a46, a47, a48, a49, a50, \ |
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48 | a51, a52, a53, a54, a55, a56, a57, a58, a59, a60, \ |
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49 | a61, a62, a63, ...) a63 |
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50 | #define LOL_COUNT_TO_3(...) \ |
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51 | LOL_EVAL(LOL_GET_63RD(__VA_ARGS__, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
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52 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
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53 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
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54 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
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55 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
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56 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, \ |
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57 | 2, 1, TOO_FEW_ARGUMENTS)) |
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58 | #define LOL_COUNT_TO_8(...) \ |
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59 | LOL_EVAL(LOL_GET_63RD(__VA_ARGS__, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, \ |
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60 | 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, \ |
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61 | 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, \ |
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62 | 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, \ |
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63 | 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, \ |
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64 | 8, 8, 8, 8, 8, 7, 6, 5, 4, 3, \ |
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65 | 2, 1, TOO_FEW_ARGUMENTS)) |
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66 | |
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67 | /* Three levels of dispatch are needed because of Visual Studio's bizarre |
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68 | * handling of __VA_ARGS__ inside macro calls */ |
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69 | #define LOL_CAT3(a, b) a##b |
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70 | #define LOL_CAT2(a, b) LOL_CAT3(a,b) |
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71 | #define LOL_CAT(a, b) LOL_CAT2(a,b) |
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72 | |
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73 | /* |
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74 | * UNUSED(): declare one or several variables as unused |
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75 | */ |
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76 | |
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77 | #define LOL_UNUSED_1(a01) \ |
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78 | sizeof(a01) |
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79 | #define LOL_UNUSED_2(a01, a02) \ |
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80 | sizeof(a01) + LOL_UNUSED_1(a02) |
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81 | #define LOL_UNUSED_3(a01, a02, a03) \ |
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82 | sizeof(a01) + LOL_UNUSED_2(a02, a03) |
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83 | #define LOL_UNUSED_4(a01, a02, a03, a04) \ |
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84 | sizeof(a01) + LOL_UNUSED_3(a02, a03, a04) |
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85 | #define LOL_UNUSED_5(a01, a02, a03, a04, a05) \ |
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86 | sizeof(a01) + LOL_UNUSED_4(a02, a03, a04, a05) |
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87 | #define LOL_UNUSED_6(a01, a02, a03, a04, a05, a06) \ |
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88 | sizeof(a01) + LOL_UNUSED_5(a02, a03, a04, a05, a06) |
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89 | #define LOL_UNUSED_7(a01, a02, a03, a04, a05, a06, a07) \ |
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90 | sizeof(a01) + LOL_UNUSED_6(a02, a03, a04, a05, a06, a07) |
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91 | #define LOL_UNUSED_8(a01, a02, a03, a04, a05, a06, a07, a08) \ |
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92 | sizeof(a01) + LOL_UNUSED_7(a02, a03, a04, a05, a06, a07, a08) |
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93 | |
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94 | #define UNUSED(...) (void)sizeof((void)( \ |
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95 | LOL_CALL(LOL_CAT(LOL_UNUSED_, LOL_CALL(LOL_COUNT_TO_8, (__VA_ARGS__))), \ |
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96 | (__VA_ARGS__))), 0) \ |
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97 | |
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98 | /* |
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99 | * ASSERT(): test and enforce conditions at runtime |
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100 | */ |
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101 | |
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102 | #define LOL_ERROR_1(t) \ |
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103 | Log::Error("assertion failure: " #t "\n") |
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104 | |
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105 | #define LOL_ERROR_2(t, s) \ |
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106 | Log::Error("assertion failure: %s\n", s) |
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107 | |
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108 | #define LOL_ERROR_3(t, s, ...) \ |
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109 | Log::Error("assertion failure: " s "\n", __VA_ARGS__) |
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110 | |
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111 | #if FINAL_RELEASE |
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112 | # define ASSERT(...) UNUSED(LOL_CALL(LOL_1ST, (__VA_ARGS__))) |
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113 | #else |
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114 | # define ASSERT(...) \ |
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115 | if (!(LOL_CALL(LOL_1ST, (__VA_ARGS__)))) \ |
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116 | { \ |
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117 | LOL_CALL(LOL_CAT(LOL_ERROR_, LOL_CALL(LOL_COUNT_TO_3, \ |
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118 | (__VA_ARGS__))), \ |
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119 | (__VA_ARGS__)); \ |
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120 | DumpStack(); \ |
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121 | DebugBreak(); \ |
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122 | Abort(); \ |
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123 | } |
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124 | #endif |
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125 | |
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126 | } /* namespace lol */ |
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127 | |
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128 | #endif // __LOL_BASE_ASSERT_H__ |
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129 | |
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