\u4f5c\u4e3a\u4e00\u4e2aC\u00a0\u7a0b\u5e8f\u5458\uff0c\u53ef\u80fd\u7ecf\u5e38\u9047\u5230\u00a0__TIME__\u3001__FILE__\u3001__DATE__\u00a0\u8fd9\u6837\u7684\u5b8f\uff0c\u5b83\u4eec\u4f1a\u5728\u7f16\u8bd1\u65f6\uff0c\u5206\u522b\u8f6c\u6362\u4e3a\u5305\u542b\u7f16\u8bd1\u65f6\u95f4\u3001\u5904\u7406\u7684\u8f6c\u6362\u5355\u5143\u540d\u79f0\u53ca\u5f53\u524d\u65f6\u95f4\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
\u5728\u6700\u65b0\u7684ISO\u00a0C\u6807\u51c6\u4e2d\uff0c\u5982\u5927\u5bb6\u6240\u77e5\u7684C99\uff0c\u52a0\u5165\u4e86\u53e6\u4e00\u4e2a\u6709\u7528\u7684\u3001\u7c7b\u4f3c\u5b8f\u7684\u8868\u8fbe\u5f0f__func__\uff0c\u5176\u4f1a\u62a5\u544a\u672a\u4fee\u9970\u8fc7\u7684\uff08\u4e5f\u5c31\u662f\u672a\u88c1\u526a\u8fc7\u7684\uff09\u3001\u6b63\u5728\u88ab\u8bbf\u95ee\u7684\u51fd\u6570\u540d\u3002\u8bf7\u6ce8\u610f\uff0c__func__\u4e0d\u662f\u4e00\u4e2a\u5b8f\uff0c\u56e0\u4e3a\u9884\u5904\u7406\u5668\u5bf9\u6b64\u51fd\u6570\u4e00\u65e0\u6240\u77e5\uff1b\u76f8\u53cd\uff0c\u5b83\u662f\u4f5c\u4e3a\u4e00\u4e2a\u9690\u5f0f\u58f0\u660e\u7684\u5e38\u91cf\u5b57\u7b26\u6570\u7ec4\u5b9e\u73b0\u7684\uff1a<\/p>\n
static\u00a0const\u00a0char\u00a0__func__[]\u00a0=\u00a0“function-name”;<\/p>\n
\u5728function-name\u5904\uff0c\u4e3a\u5b9e\u9645\u7684\u51fd\u6570\u540d\u3002\u4e3a\u6fc0\u6d3b\u6b64\u7279\u6027\uff0c\u67d0\u4e9b\u7f16\u8bd1\u5668\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u7f16\u8bd1\u6807\u5fd7\uff0c\u8bf7\u67e5\u770b\u76f8\u5e94\u7684\u7f16\u8bd1\u5668\u6587\u6863\uff0c\u4ee5\u83b7\u53d6\u5177\u4f53\u7684\u8d44\u6599\u3002<\/p>\n
\u6709\u4e86\u5b83\uff0c\u6211\u4eec\u53ef\u514d\u53bb\u5927\u591a\u6570\u901a\u8fc7\u624b\u5de5\u4fee\u6539\uff0c\u6765\u663e\u793a\u51fd\u6570\u540d\u7684\u82e6\u5dee\u4e8b\uff0c\u4ee5\u4e0a\u7684\u4f8b\u5b50\u53ef\u5982\u4e0b\u6240\u793a\u8fdb\u884c\u91cd\u5199\uff1a<\/p>\n
void\u00a0myfunc()
\n{
\ncout<<“__FUNCTION__”<<endl;
\n}<\/p>\n
\u5b98\u65b9C99\u6807\u51c6\u4e3a\u6b64\u76ee\u7684\u5b9a\u4e49\u7684__func__\u6807\u8bc6\u7b26\uff0c\u786e\u5b9e\u503c\u5f97\u5927\u5bb6\u5173\u6ce8\uff0c\u7136\u800c\uff0cISO\u00a0C\u00a0\u5374\u4e0d\u5b8c\u5168\u652f\u6301\u6240\u6709\u7684C99\u6269\u5c55\uff0c\u56e0\u6b64\uff0c\u5927\u591a\u6570\u7684\u7f16\u8bd1\u5668\u63d0\u4f9b\u5546\u90fd\u4f7f\u7528\u00a0__FUNCTION__\u00a0\u53d6\u800c\u4ee3\u4e4b\uff0c\u800c\u00a0__FUNCTION__\u00a0\u901a\u5e38\u662f\u4e00\u4e2a\u5b9a\u4e49\u4e3a\u00a0__func__\u00a0\u7684\u5b8f\uff0c\u4e4b\u6240\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u540d\u5b57\uff0c\u662f\u56e0\u4e3a\u5b83\u5df2\u53d7\u5230\u4e86\u5927\u591a\u6570\u7684\u5e7f\u6cdb\u652f\u6301\u3002<\/p>\n
\u5728Visual\u00a0Studio\u00a02005\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6b64\u7279\u6027\u662f\u6fc0\u6d3b\u7684\uff0c\u4f46\u4e0d\u80fd\u4e0e\/EP\u548c\/P\u7f16\u8bd1\u9009\u9879\u540c\u65f6\u4f7f\u7528\u3002\u8bf7\u6ce8\u610f\u5728IDE\u73af\u5883\u4e2d\uff0c\u4e0d\u80fd\u8bc6\u522b__func__\u00a0\uff0c\u800c\u8981\u7528__FUNCTION__\u00a0\u4ee3\u66ff\u3002<\/p>\n
Comeau\u7684\u7528\u6237\u4e5f\u5e94\u4f7f\u7528\u00a0__FUNCTION__\u00a0\uff0c\u800c\u4e0d\u662f\u00a0__func__\u00a0\u3002<\/p>\n
C\u00a0BuilderX\u7684\u7528\u6237\u5219\u5e94\u4f7f\u7528\u7a0d\u7a0d\u4e0d\u540c\u7684\u540d\u5b57\uff1a__FUNC__\u00a0\u3002<\/p>\n
GCC\u00a03.0\u53ca\u66f4\u9ad8\u7684\u7248\u672c\u540c\u65f6\u652f\u6301\u00a0__func__\u00a0\u548c__FUNCTION__\u00a0\u3002<\/p>\n
\u4e00\u65e6\u53ef\u81ea\u52a8\u83b7\u53d6\u5f53\u524d\u51fd\u6570\u540d\uff0c\u4f60\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u5982\u4e0b\u6240\u793a\u663e\u793a\u4efb\u4f55\u51fd\u6570\u540d\u7684\u51fd\u6570\uff1a<\/p>\n
<\/p>\n
<\/p>\n
thx\uff5e\u5927\u4fa0\uff01\uff01<\/p>\n
\u8865\u5145\u5b8c\u6574\u4e00\u4e0b\uff0c\u5728gcc\u6e90\u7801\u7684.\/libcpp\/init.c\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5e38\u91cf\u7ed3\u6784\u4f53
\n#define\u00a0B(n,\u00a0t)\u00a0\u00a0\u00a0\u00a0{\u00a0DSC(n),\u00a0t\u00a0}
\nstatic\u00a0const\u00a0struct\u00a0builtin\u00a0builtin_array[]\u00a0=
\n{
\nB(“__TIMESTAMP__”, \u00a0BT_TIMESTAMP),
\nB(“__TIME__”, \u00a0BT_TIME),
\nB(“__DATE__”, \u00a0BT_DATE),
\nB(“__FILE__”, \u00a0BT_FILE),
\nB(“__BASE_FILE__”, \u00a0BT_BASE_FILE),
\nB(“__LINE__”, \u00a0BT_SPECLINE),
\nB(“__INCLUDE_LEVEL__”,\u00a0BT_INCLUDE_LEVEL),
\nB(“__COUNTER__”, \u00a0BT_COUNTER),
\n\/*\u00a0Keep\u00a0builtins\u00a0not\u00a0used\u00a0for\u00a0-traditional-cpp\u00a0at\u00a0the\u00a0end,\u00a0and
\nupdate\u00a0init_builtins()\u00a0if\u00a0any\u00a0more\u00a0are\u00a0added.\u00a0\u00a0*\/
\nB(“_Pragma”, \u00a0BT_PRAGMA),
\nB(“__STDC__”, \u00a0BT_STDC),
\n};
\n\u5728.\/libcpp\/include\/cpplib.h\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u679a\u4e3e\u7c7b\u578b
\n\/*\u00a0Different\u00a0flavors\u00a0of\u00a0builtin\u00a0macro.\u00a0\u00a0_Pragma\u00a0is\u00a0an\u00a0operator,\u00a0but\u00a0we
\nhandle\u00a0it\u00a0with\u00a0the\u00a0builtin\u00a0code\u00a0for\u00a0efficiency\u00a0reasons.\u00a0\u00a0*\/
\nenum\u00a0builtin_type
\n{
\nBT_SPECLINE\u00a0=\u00a00, \/*\u00a0`__LINE__’\u00a0*\/
\nBT_DATE, \/*\u00a0`__DATE__’\u00a0*\/
\nBT_FILE, \/*\u00a0`__FILE__’\u00a0*\/
\nBT_BASE_FILE, \/*\u00a0`__BASE_FILE__’\u00a0*\/
\nBT_INCLUDE_LEVEL, \/*\u00a0`__INCLUDE_LEVEL__’\u00a0*\/
\nBT_TIME, \/*\u00a0`__TIME__’\u00a0*\/
\nBT_STDC, \/*\u00a0`__STDC__’\u00a0*\/
\nBT_PRAGMA, \/*\u00a0`_Pragma’\u00a0operator\u00a0*\/
\nBT_TIMESTAMP, \/*\u00a0`__TIMESTAMP__’\u00a0*\/
\nBT_COUNTER \/*\u00a0`__COUNTER__’\u00a0*\/
\n};<\/p>\n
\u800c\u4f60\u63d0\u5230\u7684.\/libcpp\/macro.c\u4e2d\u7684macro.c\u00a0\u00a0:\u00a0_cpp_builtin_macro_text\u00a0(cpp_reader\u00a0*pfile,\u00a0cpp_hashnode\u00a0*node)\uff0c\u6211\u5728\u6e90\u7801\u4e2d\u4e5f\u627e\u5230\u4e86\u6ce8\u91ca\u548c\u51fd\u6570\u539f\u578b\uff1a<\/p>\n
\/*\u00a0Helper\u00a0function\u00a0for\u00a0builtin_macro.\u00a0\u00a0Returns\u00a0the\u00a0text\u00a0generated\u00a0by
\na\u00a0builtin\u00a0macro.\u00a0*\/
\nconst\u00a0uchar\u00a0*
\n_cpp_builtin_macro_text\u00a0(cpp_reader\u00a0*pfile,\u00a0cpp_hashnode\u00a0*node)<\/p>\n
\u5e94\u8be5\u8bf4\uff0c\u8fd9\u786e\u5b9e\u4e0d\u80fd\u7b97\u662f\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u201c\u5b8f\u5b9a\u4e49\u201d<\/p>\n
<\/p>\n
\u56de29\u697c\u7684\uff0c\u6211\u8bd5\u9a8c\u8fc7CPP\u9884\u5904\u7406\u5668\uff0c\u786e\u5b9e\u53d1\u73b0__FUNCTION__\u6216\u8005__func__\u4e0e__LINE__,__FILE__\u8fd8\u4e0d\u4e00\u6837\uff08\u4e0a\u9762\u7684GCC\u6e90\u7801\u4e5f\u5370\u8bc1\u4e86\u8fd9\u4e00\u70b9\uff0c\u90a3\u91cc\u6ca1\u6709\u5b9a\u4e49__FUNCTION__\u6216\u8005__func__\uff09<\/p>\n
CPP\u9884\u5904\u7406\u5668\u4f1a\u5c06__LINE__\u548c__FILE__\u66ff\u6362\uff08\u548c\u4e00\u822c\u5b8f\u4e00\u6837\uff09\uff0c\u4f46\u4e0d\u4f1a\u5904\u7406__FUNCTION__\uff0c\u4ece\u8fd9\u4e2a\u610f\u4e49\u4e0a\u8bf4\uff0c__LINE__\u548c__FILE__\u53c8\u662f\u6240\u8c13\u7684builtin\u00a0macro\uff0c\u800c__FUNCTION__\u4e0d\u662f\uff0c\u5b83\u66f4\u52a0\u7279\u6b8a\uff0c\u5b83\u5f62\u4f3c\u5b8f\u53c8\u4e0d\u4e00\u6837<\/p>\n
\u8fd9\u662f\u6211\u76ee\u524d\u7684\u7406\u89e3\uff0c\u591a\u8c22\u5404\u4f4d<\/p>\n","protected":false},"excerpt":{"rendered":"
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