diff --git a/src/json.hpp b/src/json.hpp index 343d23565c..63bc8026ca 100644 --- a/src/json.hpp +++ b/src/json.hpp @@ -2675,7 +2675,9 @@ class basic_json std::enable_if< not std::is_pointer::value and not std::is_same::value +#ifndef _MSC_VER // Fix for issue #167 operator<< abiguity under VS2015 and not std::is_same>::value +#endif , int>::type = 0> operator ValueType() const { @@ -3060,8 +3062,6 @@ class basic_json the object and filled with a `null` value to make `key` a valid reference. In case the value was `null` before, it is converted to an object. - @note This function is required for compatibility reasons with Clang. - @param[in] key key of the element to access @return reference to the element at key @a key @@ -3081,7 +3081,75 @@ class basic_json @since version 1.0.0 */ template - reference operator[](const T (&key)[n]) + reference operator[](T* (&key)[n]) + { + return operator[](static_cast(key)); + } + + /*! + @brief read-only access specified object element + + Returns a const reference to the element at with specified key @a key. No + bounds checking is performed. + + @warning If the element with key @a key does not exist, the behavior is + undefined. + + @note This function is required for compatibility reasons with Clang. + + @param[in] key key of the element to access + + @return const reference to the element at key @a key + + @throw std::domain_error if JSON is not an object; example: `"cannot use + operator[] with null"` + + @complexity Logarithmic in the size of the container. + + @liveexample{The example below shows how object elements can be read using + the [] operator.,operatorarray__key_type_const} + + @sa @ref at(const typename object_t::key_type&) for access by reference + with range checking + @sa @ref value() for access by value with a default value + + @since version 1.0.0 + */ + template + const_reference operator[](T* (&key)[n]) const + { + return operator[](static_cast(key)); + } + + /*! + @brief access specified object element + + Returns a reference to the element at with specified key @a key. + + @note If @a key is not found in the object, then it is silently added to + the object and filled with a `null` value to make `key` a valid reference. + In case the value was `null` before, it is converted to an object. + + @param[in] key key of the element to access + + @return reference to the element at key @a key + + @throw std::domain_error if JSON is not an object or null; example: + `"cannot use operator[] with null"` + + @complexity Logarithmic in the size of the container. + + @liveexample{The example below shows how object elements can be read and + written using the [] operator.,operatorarray__key_type} + + @sa @ref at(const typename object_t::key_type&) for access by reference + with range checking + @sa @ref value() for access by value with a default value + + @since version 1.0.1 + */ + template + reference operator[](T* key) { // implicitly convert null to object if (is_null()) @@ -3111,8 +3179,6 @@ class basic_json @warning If the element with key @a key does not exist, the behavior is undefined. - @note This function is required for compatibility reasons with Clang. - @param[in] key key of the element to access @return const reference to the element at key @a key @@ -3129,10 +3195,10 @@ class basic_json with range checking @sa @ref value() for access by value with a default value - @since version 1.0.0 + @since version 1.0.1 */ - template - const_reference operator[](const T (&key)[n]) const + template + const_reference operator[](T* key) const { // at only works for objects if (is_object()) @@ -6745,789 +6811,386 @@ class basic_json m_start = m_cursor; assert(m_start != nullptr); - - { - lexer_char_t yych; - unsigned int yyaccept = 0; - static const unsigned char yybm[] = - { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 32, 32, 0, 0, 32, 0, 0, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 96, 64, 0, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 192, 192, 192, 192, 192, 192, 192, 192, - 192, 192, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 0, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - 64, 64, 64, 64, 64, 64, 64, 64, - }; - if ((m_limit - m_cursor) < 5) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= ':') - { - if (yych <= ' ') - { - if (yych <= '\n') - { - if (yych <= 0x00) - { - goto basic_json_parser_28; - } - if (yych <= 0x08) - { - goto basic_json_parser_30; - } - if (yych >= '\n') - { - goto basic_json_parser_4; - } - } - else - { - if (yych == '\r') - { - goto basic_json_parser_2; - } - if (yych <= 0x1F) - { - goto basic_json_parser_30; - } - } - } - else - { - if (yych <= ',') - { - if (yych == '"') - { - goto basic_json_parser_27; - } - if (yych <= '+') - { - goto basic_json_parser_30; - } - goto basic_json_parser_16; - } - else - { - if (yych <= '/') - { - if (yych <= '-') - { - goto basic_json_parser_23; - } - goto basic_json_parser_30; - } - else - { - if (yych <= '0') - { - goto basic_json_parser_24; - } - if (yych <= '9') - { - goto basic_json_parser_26; - } - goto basic_json_parser_18; - } - } + + { + lexer_char_t yych; + unsigned int yyaccept = 0; + static const unsigned char yybm[] = { + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 32, 32, 0, 0, 32, 0, 0, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 96, 64, 0, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 192, 192, 192, 192, 192, 192, 192, 192, + 192, 192, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 0, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, + }; + if ((m_limit - m_cursor) < 5) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= ':') { + if (yych <= ' ') { + if (yych <= '\n') { + if (yych <= 0x00) goto basic_json_parser_28; + if (yych <= 0x08) goto basic_json_parser_30; + if (yych >= '\n') goto basic_json_parser_4; + } else { + if (yych == '\r') goto basic_json_parser_2; + if (yych <= 0x1F) goto basic_json_parser_30; + } + } else { + if (yych <= ',') { + if (yych == '"') goto basic_json_parser_27; + if (yych <= '+') goto basic_json_parser_30; + goto basic_json_parser_16; + } else { + if (yych <= '/') { + if (yych <= '-') goto basic_json_parser_23; + goto basic_json_parser_30; + } else { + if (yych <= '0') goto basic_json_parser_24; + if (yych <= '9') goto basic_json_parser_26; + goto basic_json_parser_18; } } - else - { - if (yych <= 'n') - { - if (yych <= ']') - { - if (yych == '[') - { - goto basic_json_parser_8; - } - if (yych <= '\\') - { - goto basic_json_parser_30; - } - goto basic_json_parser_10; - } - else - { - if (yych == 'f') - { - goto basic_json_parser_22; - } - if (yych <= 'm') - { - goto basic_json_parser_30; - } - goto basic_json_parser_20; - } - } - else - { - if (yych <= '{') - { - if (yych == 't') - { - goto basic_json_parser_21; - } - if (yych <= 'z') - { - goto basic_json_parser_30; - } - goto basic_json_parser_12; - } - else - { - if (yych <= '}') - { - if (yych <= '|') - { - goto basic_json_parser_30; - } - goto basic_json_parser_14; - } - else - { - if (yych == 0xEF) - { - goto basic_json_parser_6; - } - goto basic_json_parser_30; - } - } + } + } else { + if (yych <= 'n') { + if (yych <= ']') { + if (yych == '[') goto basic_json_parser_8; + if (yych <= '\\') goto basic_json_parser_30; + goto basic_json_parser_10; + } else { + if (yych == 'f') goto basic_json_parser_22; + if (yych <= 'm') goto basic_json_parser_30; + goto basic_json_parser_20; + } + } else { + if (yych <= '{') { + if (yych == 't') goto basic_json_parser_21; + if (yych <= 'z') goto basic_json_parser_30; + goto basic_json_parser_12; + } else { + if (yych <= '}') { + if (yych <= '|') goto basic_json_parser_30; + goto basic_json_parser_14; + } else { + if (yych == 0xEF) goto basic_json_parser_6; + goto basic_json_parser_30; } } + } + } basic_json_parser_2: - ++m_cursor; - yych = *m_cursor; - goto basic_json_parser_5; + ++m_cursor; + yych = *m_cursor; + goto basic_json_parser_5; basic_json_parser_3: - { - return scan(); - } + { return scan(); } basic_json_parser_4: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; basic_json_parser_5: - if (yybm[0 + yych] & 32) - { - goto basic_json_parser_4; - } - goto basic_json_parser_3; + if (yybm[0+yych] & 32) { + goto basic_json_parser_4; + } + goto basic_json_parser_3; basic_json_parser_6: - yyaccept = 0; - yych = *(m_marker = ++m_cursor); - if (yych == 0xBB) - { - goto basic_json_parser_64; - } + yyaccept = 0; + yych = *(m_marker = ++m_cursor); + if (yych == 0xBB) goto basic_json_parser_64; basic_json_parser_7: - { - return token_type::parse_error; - } + { return token_type::parse_error; } basic_json_parser_8: - ++m_cursor; - { - return token_type::begin_array; - } + ++m_cursor; + { return token_type::begin_array; } basic_json_parser_10: - ++m_cursor; - { - return token_type::end_array; - } + ++m_cursor; + { return token_type::end_array; } basic_json_parser_12: - ++m_cursor; - { - return token_type::begin_object; - } + ++m_cursor; + { return token_type::begin_object; } basic_json_parser_14: - ++m_cursor; - { - return token_type::end_object; - } + ++m_cursor; + { return token_type::end_object; } basic_json_parser_16: - ++m_cursor; - { - return token_type::value_separator; - } + ++m_cursor; + { return token_type::value_separator; } basic_json_parser_18: - ++m_cursor; - { - return token_type::name_separator; - } + ++m_cursor; + { return token_type::name_separator; } basic_json_parser_20: - yyaccept = 0; - yych = *(m_marker = ++m_cursor); - if (yych == 'u') - { - goto basic_json_parser_60; - } - goto basic_json_parser_7; + yyaccept = 0; + yych = *(m_marker = ++m_cursor); + if (yych == 'u') goto basic_json_parser_60; + goto basic_json_parser_7; basic_json_parser_21: - yyaccept = 0; - yych = *(m_marker = ++m_cursor); - if (yych == 'r') - { - goto basic_json_parser_56; - } - goto basic_json_parser_7; + yyaccept = 0; + yych = *(m_marker = ++m_cursor); + if (yych == 'r') goto basic_json_parser_56; + goto basic_json_parser_7; basic_json_parser_22: - yyaccept = 0; - yych = *(m_marker = ++m_cursor); - if (yych == 'a') - { - goto basic_json_parser_51; - } - goto basic_json_parser_7; + yyaccept = 0; + yych = *(m_marker = ++m_cursor); + if (yych == 'a') goto basic_json_parser_51; + goto basic_json_parser_7; basic_json_parser_23: - yych = *++m_cursor; - if (yych <= '/') - { - goto basic_json_parser_7; - } - if (yych <= '0') - { - goto basic_json_parser_50; - } - if (yych <= '9') - { - goto basic_json_parser_41; - } - goto basic_json_parser_7; + yych = *++m_cursor; + if (yych <= '/') goto basic_json_parser_7; + if (yych <= '0') goto basic_json_parser_50; + if (yych <= '9') goto basic_json_parser_41; + goto basic_json_parser_7; basic_json_parser_24: - yyaccept = 1; - yych = *(m_marker = ++m_cursor); - if (yych <= 'D') - { - if (yych == '.') - { - goto basic_json_parser_43; - } - } - else - { - if (yych <= 'E') - { - goto basic_json_parser_44; - } - if (yych == 'e') - { - goto basic_json_parser_44; - } - } + yyaccept = 1; + yych = *(m_marker = ++m_cursor); + if (yych <= 'D') { + if (yych == '.') goto basic_json_parser_43; + } else { + if (yych <= 'E') goto basic_json_parser_44; + if (yych == 'e') goto basic_json_parser_44; + } basic_json_parser_25: - { - return token_type::value_number; - } + { return token_type::value_number; } basic_json_parser_26: - yyaccept = 1; - yych = *(m_marker = ++m_cursor); - goto basic_json_parser_42; + yyaccept = 1; + yych = *(m_marker = ++m_cursor); + goto basic_json_parser_42; basic_json_parser_27: - yyaccept = 0; - yych = *(m_marker = ++m_cursor); - if (yych <= 0x0F) - { - goto basic_json_parser_7; - } - goto basic_json_parser_32; + yyaccept = 0; + yych = *(m_marker = ++m_cursor); + if (yych <= 0x0F) goto basic_json_parser_7; + goto basic_json_parser_32; basic_json_parser_28: - ++m_cursor; - { - return token_type::end_of_input; - } + ++m_cursor; + { return token_type::end_of_input; } basic_json_parser_30: - yych = *++m_cursor; - goto basic_json_parser_7; + yych = *++m_cursor; + goto basic_json_parser_7; basic_json_parser_31: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; basic_json_parser_32: - if (yybm[0 + yych] & 64) - { - goto basic_json_parser_31; - } - if (yych <= 0x0F) - { - goto basic_json_parser_33; - } - if (yych <= '"') - { - goto basic_json_parser_35; - } - goto basic_json_parser_34; + if (yybm[0+yych] & 64) { + goto basic_json_parser_31; + } + if (yych <= 0x0F) goto basic_json_parser_33; + if (yych <= '"') goto basic_json_parser_35; + goto basic_json_parser_34; basic_json_parser_33: - m_cursor = m_marker; - if (yyaccept == 0) - { - goto basic_json_parser_7; - } - else - { - goto basic_json_parser_25; - } + m_cursor = m_marker; + if (yyaccept == 0) { + goto basic_json_parser_7; + } else { + goto basic_json_parser_25; + } basic_json_parser_34: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= 'e') - { - if (yych <= '/') - { - if (yych == '"') - { - goto basic_json_parser_31; - } - if (yych <= '.') - { - goto basic_json_parser_33; - } - goto basic_json_parser_31; - } - else - { - if (yych <= '\\') - { - if (yych <= '[') - { - goto basic_json_parser_33; - } - goto basic_json_parser_31; - } - else - { - if (yych == 'b') - { - goto basic_json_parser_31; - } - goto basic_json_parser_33; - } - } + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= 'e') { + if (yych <= '/') { + if (yych == '"') goto basic_json_parser_31; + if (yych <= '.') goto basic_json_parser_33; + goto basic_json_parser_31; + } else { + if (yych <= '\\') { + if (yych <= '[') goto basic_json_parser_33; + goto basic_json_parser_31; + } else { + if (yych == 'b') goto basic_json_parser_31; + goto basic_json_parser_33; } - else - { - if (yych <= 'q') - { - if (yych <= 'f') - { - goto basic_json_parser_31; - } - if (yych == 'n') - { - goto basic_json_parser_31; - } - goto basic_json_parser_33; - } - else - { - if (yych <= 's') - { - if (yych <= 'r') - { - goto basic_json_parser_31; - } - goto basic_json_parser_33; - } - else - { - if (yych <= 't') - { - goto basic_json_parser_31; - } - if (yych <= 'u') - { - goto basic_json_parser_37; - } - goto basic_json_parser_33; - } - } + } + } else { + if (yych <= 'q') { + if (yych <= 'f') goto basic_json_parser_31; + if (yych == 'n') goto basic_json_parser_31; + goto basic_json_parser_33; + } else { + if (yych <= 's') { + if (yych <= 'r') goto basic_json_parser_31; + goto basic_json_parser_33; + } else { + if (yych <= 't') goto basic_json_parser_31; + if (yych <= 'u') goto basic_json_parser_37; + goto basic_json_parser_33; } + } + } basic_json_parser_35: - ++m_cursor; - { - return token_type::value_string; - } + ++m_cursor; + { return token_type::value_string; } basic_json_parser_37: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= '@') - { - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych >= ':') - { - goto basic_json_parser_33; - } - } - else - { - if (yych <= 'F') - { - goto basic_json_parser_38; - } - if (yych <= '`') - { - goto basic_json_parser_33; - } - if (yych >= 'g') - { - goto basic_json_parser_33; - } - } + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= '@') { + if (yych <= '/') goto basic_json_parser_33; + if (yych >= ':') goto basic_json_parser_33; + } else { + if (yych <= 'F') goto basic_json_parser_38; + if (yych <= '`') goto basic_json_parser_33; + if (yych >= 'g') goto basic_json_parser_33; + } basic_json_parser_38: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= '@') - { - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych >= ':') - { - goto basic_json_parser_33; - } - } - else - { - if (yych <= 'F') - { - goto basic_json_parser_39; - } - if (yych <= '`') - { - goto basic_json_parser_33; - } - if (yych >= 'g') - { - goto basic_json_parser_33; - } - } + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= '@') { + if (yych <= '/') goto basic_json_parser_33; + if (yych >= ':') goto basic_json_parser_33; + } else { + if (yych <= 'F') goto basic_json_parser_39; + if (yych <= '`') goto basic_json_parser_33; + if (yych >= 'g') goto basic_json_parser_33; + } basic_json_parser_39: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= '@') - { - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych >= ':') - { - goto basic_json_parser_33; - } - } - else - { - if (yych <= 'F') - { - goto basic_json_parser_40; - } - if (yych <= '`') - { - goto basic_json_parser_33; - } - if (yych >= 'g') - { - goto basic_json_parser_33; - } - } + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= '@') { + if (yych <= '/') goto basic_json_parser_33; + if (yych >= ':') goto basic_json_parser_33; + } else { + if (yych <= 'F') goto basic_json_parser_40; + if (yych <= '`') goto basic_json_parser_33; + if (yych >= 'g') goto basic_json_parser_33; + } basic_json_parser_40: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= '@') - { - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych <= '9') - { - goto basic_json_parser_31; - } - goto basic_json_parser_33; - } - else - { - if (yych <= 'F') - { - goto basic_json_parser_31; - } - if (yych <= '`') - { - goto basic_json_parser_33; - } - if (yych <= 'f') - { - goto basic_json_parser_31; - } - goto basic_json_parser_33; - } + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= '@') { + if (yych <= '/') goto basic_json_parser_33; + if (yych <= '9') goto basic_json_parser_31; + goto basic_json_parser_33; + } else { + if (yych <= 'F') goto basic_json_parser_31; + if (yych <= '`') goto basic_json_parser_33; + if (yych <= 'f') goto basic_json_parser_31; + goto basic_json_parser_33; + } basic_json_parser_41: - yyaccept = 1; - m_marker = ++m_cursor; - if ((m_limit - m_cursor) < 3) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; + yyaccept = 1; + m_marker = ++m_cursor; + if ((m_limit - m_cursor) < 3) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; basic_json_parser_42: - if (yybm[0 + yych] & 128) - { - goto basic_json_parser_41; - } - if (yych <= 'D') - { - if (yych != '.') - { - goto basic_json_parser_25; - } - } - else - { - if (yych <= 'E') - { - goto basic_json_parser_44; - } - if (yych == 'e') - { - goto basic_json_parser_44; - } - goto basic_json_parser_25; - } + if (yybm[0+yych] & 128) { + goto basic_json_parser_41; + } + if (yych <= 'D') { + if (yych != '.') goto basic_json_parser_25; + } else { + if (yych <= 'E') goto basic_json_parser_44; + if (yych == 'e') goto basic_json_parser_44; + goto basic_json_parser_25; + } basic_json_parser_43: - yych = *++m_cursor; - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych <= '9') - { - goto basic_json_parser_48; - } - goto basic_json_parser_33; + yych = *++m_cursor; + if (yych <= '/') goto basic_json_parser_33; + if (yych <= '9') goto basic_json_parser_48; + goto basic_json_parser_33; basic_json_parser_44: - yych = *++m_cursor; - if (yych <= ',') - { - if (yych != '+') - { - goto basic_json_parser_33; - } - } - else - { - if (yych <= '-') - { - goto basic_json_parser_45; - } - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych <= '9') - { - goto basic_json_parser_46; - } - goto basic_json_parser_33; - } + yych = *++m_cursor; + if (yych <= ',') { + if (yych != '+') goto basic_json_parser_33; + } else { + if (yych <= '-') goto basic_json_parser_45; + if (yych <= '/') goto basic_json_parser_33; + if (yych <= '9') goto basic_json_parser_46; + goto basic_json_parser_33; + } basic_json_parser_45: - yych = *++m_cursor; - if (yych <= '/') - { - goto basic_json_parser_33; - } - if (yych >= ':') - { - goto basic_json_parser_33; - } + yych = *++m_cursor; + if (yych <= '/') goto basic_json_parser_33; + if (yych >= ':') goto basic_json_parser_33; basic_json_parser_46: - ++m_cursor; - if (m_limit <= m_cursor) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= '/') - { - goto basic_json_parser_25; - } - if (yych <= '9') - { - goto basic_json_parser_46; - } - goto basic_json_parser_25; + ++m_cursor; + if (m_limit <= m_cursor) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= '/') goto basic_json_parser_25; + if (yych <= '9') goto basic_json_parser_46; + goto basic_json_parser_25; basic_json_parser_48: - yyaccept = 1; - m_marker = ++m_cursor; - if ((m_limit - m_cursor) < 3) - { - yyfill(); // LCOV_EXCL_LINE; - } - yych = *m_cursor; - if (yych <= 'D') - { - if (yych <= '/') - { - goto basic_json_parser_25; - } - if (yych <= '9') - { - goto basic_json_parser_48; - } - goto basic_json_parser_25; - } - else - { - if (yych <= 'E') - { - goto basic_json_parser_44; - } - if (yych == 'e') - { - goto basic_json_parser_44; - } - goto basic_json_parser_25; - } + yyaccept = 1; + m_marker = ++m_cursor; + if ((m_limit - m_cursor) < 3) yyfill(); // LCOV_EXCL_LINE; + yych = *m_cursor; + if (yych <= 'D') { + if (yych <= '/') goto basic_json_parser_25; + if (yych <= '9') goto basic_json_parser_48; + goto basic_json_parser_25; + } else { + if (yych <= 'E') goto basic_json_parser_44; + if (yych == 'e') goto basic_json_parser_44; + goto basic_json_parser_25; + } basic_json_parser_50: - yyaccept = 1; - yych = *(m_marker = ++m_cursor); - if (yych <= 'D') - { - if (yych == '.') - { - goto basic_json_parser_43; - } - goto basic_json_parser_25; - } - else - { - if (yych <= 'E') - { - goto basic_json_parser_44; - } - if (yych == 'e') - { - goto basic_json_parser_44; - } - goto basic_json_parser_25; - } + yyaccept = 1; + yych = *(m_marker = ++m_cursor); + if (yych <= 'D') { + if (yych == '.') goto basic_json_parser_43; + goto basic_json_parser_25; + } else { + if (yych <= 'E') goto basic_json_parser_44; + if (yych == 'e') goto basic_json_parser_44; + goto basic_json_parser_25; + } basic_json_parser_51: - yych = *++m_cursor; - if (yych != 'l') - { - goto basic_json_parser_33; - } - yych = *++m_cursor; - if (yych != 's') - { - goto basic_json_parser_33; - } - yych = *++m_cursor; - if (yych != 'e') - { - goto basic_json_parser_33; - } - ++m_cursor; - { - return token_type::literal_false; - } + yych = *++m_cursor; + if (yych != 'l') goto basic_json_parser_33; + yych = *++m_cursor; + if (yych != 's') goto basic_json_parser_33; + yych = *++m_cursor; + if (yych != 'e') goto basic_json_parser_33; + ++m_cursor; + { return token_type::literal_false; } basic_json_parser_56: - yych = *++m_cursor; - if (yych != 'u') - { - goto basic_json_parser_33; - } - yych = *++m_cursor; - if (yych != 'e') - { - goto basic_json_parser_33; - } - ++m_cursor; - { - return token_type::literal_true; - } + yych = *++m_cursor; + if (yych != 'u') goto basic_json_parser_33; + yych = *++m_cursor; + if (yych != 'e') goto basic_json_parser_33; + ++m_cursor; + { return token_type::literal_true; } basic_json_parser_60: - yych = *++m_cursor; - if (yych != 'l') - { - goto basic_json_parser_33; - } - yych = *++m_cursor; - if (yych != 'l') - { - goto basic_json_parser_33; - } - ++m_cursor; - { - return token_type::literal_null; - } + yych = *++m_cursor; + if (yych != 'l') goto basic_json_parser_33; + yych = *++m_cursor; + if (yych != 'l') goto basic_json_parser_33; + ++m_cursor; + { return token_type::literal_null; } basic_json_parser_64: - yych = *++m_cursor; - if (yych != 0xBF) - { - goto basic_json_parser_33; - } - ++m_cursor; - { - return scan(); - } - } + yych = *++m_cursor; + if (yych != 0xBF) goto basic_json_parser_33; + ++m_cursor; + { return scan(); } + } } diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c index d384f313a4..a3e7c79005 100644 --- a/src/json.hpp.re2c +++ b/src/json.hpp.re2c @@ -2675,7 +2675,9 @@ class basic_json std::enable_if< not std::is_pointer::value and not std::is_same::value +#ifndef _MSC_VER // Fix for issue #167 operator<< abiguity under VS2015 and not std::is_same>::value +#endif , int>::type = 0> operator ValueType() const { @@ -3060,8 +3062,6 @@ class basic_json the object and filled with a `null` value to make `key` a valid reference. In case the value was `null` before, it is converted to an object. - @note This function is required for compatibility reasons with Clang. - @param[in] key key of the element to access @return reference to the element at key @a key @@ -3081,7 +3081,75 @@ class basic_json @since version 1.0.0 */ template - reference operator[](const T (&key)[n]) + reference operator[](T* (&key)[n]) + { + return operator[](static_cast(key)); + } + + /*! + @brief read-only access specified object element + + Returns a const reference to the element at with specified key @a key. No + bounds checking is performed. + + @warning If the element with key @a key does not exist, the behavior is + undefined. + + @note This function is required for compatibility reasons with Clang. + + @param[in] key key of the element to access + + @return const reference to the element at key @a key + + @throw std::domain_error if JSON is not an object; example: `"cannot use + operator[] with null"` + + @complexity Logarithmic in the size of the container. + + @liveexample{The example below shows how object elements can be read using + the [] operator.,operatorarray__key_type_const} + + @sa @ref at(const typename object_t::key_type&) for access by reference + with range checking + @sa @ref value() for access by value with a default value + + @since version 1.0.0 + */ + template + const_reference operator[](T* (&key)[n]) const + { + return operator[](static_cast(key)); + } + + /*! + @brief access specified object element + + Returns a reference to the element at with specified key @a key. + + @note If @a key is not found in the object, then it is silently added to + the object and filled with a `null` value to make `key` a valid reference. + In case the value was `null` before, it is converted to an object. + + @param[in] key key of the element to access + + @return reference to the element at key @a key + + @throw std::domain_error if JSON is not an object or null; example: + `"cannot use operator[] with null"` + + @complexity Logarithmic in the size of the container. + + @liveexample{The example below shows how object elements can be read and + written using the [] operator.,operatorarray__key_type} + + @sa @ref at(const typename object_t::key_type&) for access by reference + with range checking + @sa @ref value() for access by value with a default value + + @since version 1.0.1 + */ + template + reference operator[](T* key) { // implicitly convert null to object if (is_null()) @@ -3111,8 +3179,6 @@ class basic_json @warning If the element with key @a key does not exist, the behavior is undefined. - @note This function is required for compatibility reasons with Clang. - @param[in] key key of the element to access @return const reference to the element at key @a key @@ -3129,10 +3195,10 @@ class basic_json with range checking @sa @ref value() for access by value with a default value - @since version 1.0.0 + @since version 1.0.1 */ - template - const_reference operator[](const T (&key)[n]) const + template + const_reference operator[](T* key) const { // at only works for objects if (is_object()) diff --git a/test/unit.cpp b/test/unit.cpp index 8b3bc19b26..282c6f90df 100644 --- a/test/unit.cpp +++ b/test/unit.cpp @@ -11504,4 +11504,52 @@ TEST_CASE("regression tests") { CHECK(json::parse("\"\\ud80c\\udc60abc\"").get() == u8"\U00013060abc"); } + + SECTION("issue #144 - Cannot index by key of type static constexpr const char*") + { + json j; + + // Non-const access with key as "char []" + char array_key[] = "Key1"; + CHECK_NOTHROW(j[array_key] = 1); + CHECK(j[array_key] == json(1)); + + // Non-const access with key as "const char[]" + const char const_array_key[] = "Key2"; + CHECK_NOTHROW(j[const_array_key] = 2); + CHECK(j[const_array_key] == json(2)); + + // Non-const access with key as "char *" + char _ptr_key[] = "Key3"; + char * ptr_key = &_ptr_key[0]; + CHECK_NOTHROW(j[ptr_key] = 3); + CHECK(j[ptr_key] == json(3)); + + // Non-const access with key as "const char *" + const char * const_ptr_key = "Key4"; + CHECK_NOTHROW(j[const_ptr_key] = 4); + CHECK(j[const_ptr_key] == json(4)); + + // Non-const access with key as "static constexpr const char *" + static constexpr const char* constexpr_ptr_key = "Key5"; + CHECK_NOTHROW(j[constexpr_ptr_key] = 5); + CHECK(j[constexpr_ptr_key] == json(5)); + + const json j_const = j; + + // Const access with key as "char []" + CHECK(j_const[array_key] == json(1)); + + // Const access with key as "const char[]" + CHECK(j_const[const_array_key] == json(2)); + + //Const access with key as "char *" + CHECK(j_const[ptr_key] == json(3)); + + // Const access with key as "const char *" + CHECK(j_const[const_ptr_key] == json(4)); + + // Const access with key as "static constexpr const char *" + CHECK(j_const[constexpr_ptr_key] == json(5)); + } }