1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 // <regex> 12 13 // class regex_error 14 // : public runtime_error 15 // { 16 // public: 17 // explicit regex_error(regex_constants::error_type ecode); 18 // regex_constants::error_type code() const; 19 // }; 20 21 #include <regex> 22 #include <cassert> 23 24 int main() 25 { 26 { 27 std::regex_error e(std::regex_constants::error_collate); 28 assert(e.code() == std::regex_constants::error_collate); 29 assert(e.what() == std::string("The expression contained an invalid collating element name.")); 30 } 31 { 32 std::regex_error e(std::regex_constants::error_ctype); 33 assert(e.code() == std::regex_constants::error_ctype); 34 assert(e.what() == std::string("The expression contained an invalid character class name.")); 35 } 36 { 37 std::regex_error e(std::regex_constants::error_escape); 38 assert(e.code() == std::regex_constants::error_escape); 39 assert(e.what() == std::string("The expression contained an invalid escaped character, or a " 40 "trailing escape.")); 41 } 42 { 43 std::regex_error e(std::regex_constants::error_backref); 44 assert(e.code() == std::regex_constants::error_backref); 45 assert(e.what() == std::string("The expression contained an invalid back reference.")); 46 } 47 { 48 std::regex_error e(std::regex_constants::error_brack); 49 assert(e.code() == std::regex_constants::error_brack); 50 assert(e.what() == std::string("The expression contained mismatched [ and ].")); 51 } 52 { 53 std::regex_error e(std::regex_constants::error_paren); 54 assert(e.code() == std::regex_constants::error_paren); 55 assert(e.what() == std::string("The expression contained mismatched ( and ).")); 56 } 57 { 58 std::regex_error e(std::regex_constants::error_brace); 59 assert(e.code() == std::regex_constants::error_brace); 60 assert(e.what() == std::string("The expression contained mismatched { and }.")); 61 } 62 { 63 std::regex_error e(std::regex_constants::error_badbrace); 64 assert(e.code() == std::regex_constants::error_badbrace); 65 assert(e.what() == std::string("The expression contained an invalid range in a {} expression.")); 66 } 67 { 68 std::regex_error e(std::regex_constants::error_range); 69 assert(e.code() == std::regex_constants::error_range); 70 assert(e.what() == std::string("The expression contained an invalid character range, " 71 "such as [b-a] in most encodings.")); 72 } 73 { 74 std::regex_error e(std::regex_constants::error_space); 75 assert(e.code() == std::regex_constants::error_space); 76 assert(e.what() == std::string("There was insufficient memory to convert the expression into " 77 "a finite state machine.")); 78 } 79 { 80 std::regex_error e(std::regex_constants::error_badrepeat); 81 assert(e.code() == std::regex_constants::error_badrepeat); 82 assert(e.what() == std::string("One of *?+{ was not preceded by a valid regular expression.")); 83 } 84 { 85 std::regex_error e(std::regex_constants::error_complexity); 86 assert(e.code() == std::regex_constants::error_complexity); 87 assert(e.what() == std::string("The complexity of an attempted match against a regular " 88 "expression exceeded a pre-set level.")); 89 } 90 { 91 std::regex_error e(std::regex_constants::error_stack); 92 assert(e.code() == std::regex_constants::error_stack); 93 assert(e.what() == std::string("There was insufficient memory to determine whether the regular " 94 "expression could match the specified character sequence.")); 95 } 96 } 97
