| // Tencent is pleased to support the open source community by making RapidJSON available. |
| // |
| // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved. |
| // |
| // Licensed under the MIT License (the "License"); you may not use this file except |
| // in compliance with the License. You may obtain a copy of the License at |
| // |
| // http://opensource.org/licenses/MIT |
| // |
| // Unless required by applicable law or agreed to in writing, software distributed |
| // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR |
| // CONDITIONS OF ANY KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations under the License. |
| |
| #ifndef RAPIDJSON_ERROR_ERROR_H_ |
| #define RAPIDJSON_ERROR_ERROR_H_ |
| |
| #include "../rapidjson.h" |
| |
| #ifdef __clang__ |
| RAPIDJSON_DIAG_PUSH |
| RAPIDJSON_DIAG_OFF(padded) |
| #endif |
| |
| /*! \file error.h */ |
| |
| /*! \defgroup RAPIDJSON_ERRORS RapidJSON error handling */ |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // RAPIDJSON_ERROR_CHARTYPE |
| |
| //! Character type of error messages. |
| /*! \ingroup RAPIDJSON_ERRORS |
| The default character type is \c char. |
| On Windows, user can define this macro as \c TCHAR for supporting both |
| unicode/non-unicode settings. |
| */ |
| #ifndef RAPIDJSON_ERROR_CHARTYPE |
| #define RAPIDJSON_ERROR_CHARTYPE char |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // RAPIDJSON_ERROR_STRING |
| |
| //! Macro for converting string literial to \ref RAPIDJSON_ERROR_CHARTYPE[]. |
| /*! \ingroup RAPIDJSON_ERRORS |
| By default this conversion macro does nothing. |
| On Windows, user can define this macro as \c _T(x) for supporting both |
| unicode/non-unicode settings. |
| */ |
| #ifndef RAPIDJSON_ERROR_STRING |
| #define RAPIDJSON_ERROR_STRING(x) x |
| #endif |
| |
| RAPIDJSON_NAMESPACE_BEGIN |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // ParseErrorCode |
| |
| //! Error code of parsing. |
| /*! \ingroup RAPIDJSON_ERRORS |
| \see GenericReader::Parse, GenericReader::GetParseErrorCode |
| */ |
| enum ParseErrorCode { |
| kParseErrorNone = 0, //!< No error. |
| |
| kParseErrorDocumentEmpty, //!< The document is empty. |
| kParseErrorDocumentRootNotSingular, //!< The document root must not follow by other values. |
| |
| kParseErrorValueInvalid, //!< Invalid value. |
| |
| kParseErrorObjectMissName, //!< Missing a name for object member. |
| kParseErrorObjectMissColon, //!< Missing a colon after a name of object member. |
| kParseErrorObjectMissCommaOrCurlyBracket, //!< Missing a comma or '}' after an object member. |
| |
| kParseErrorArrayMissCommaOrSquareBracket, //!< Missing a comma or ']' after an array element. |
| |
| kParseErrorStringUnicodeEscapeInvalidHex, //!< Incorrect hex digit after \\u escape in string. |
| kParseErrorStringUnicodeSurrogateInvalid, //!< The surrogate pair in string is invalid. |
| kParseErrorStringEscapeInvalid, //!< Invalid escape character in string. |
| kParseErrorStringMissQuotationMark, //!< Missing a closing quotation mark in string. |
| kParseErrorStringInvalidEncoding, //!< Invalid encoding in string. |
| |
| kParseErrorNumberTooBig, //!< Number too big to be stored in double. |
| kParseErrorNumberMissFraction, //!< Miss fraction part in number. |
| kParseErrorNumberMissExponent, //!< Miss exponent in number. |
| |
| kParseErrorTermination, //!< Parsing was terminated. |
| kParseErrorUnspecificSyntaxError //!< Unspecific syntax error. |
| }; |
| |
| //! Result of parsing (wraps ParseErrorCode) |
| /*! |
| \ingroup RAPIDJSON_ERRORS |
| \code |
| Document doc; |
| ParseResult ok = doc.Parse("[42]"); |
| if (!ok) { |
| fprintf(stderr, "JSON parse error: %s (%u)", |
| GetParseError_En(ok.Code()), ok.Offset()); |
| exit(EXIT_FAILURE); |
| } |
| \endcode |
| \see GenericReader::Parse, GenericDocument::Parse |
| */ |
| struct ParseResult { |
| //!! Unspecified boolean type |
| typedef bool (ParseResult::*BooleanType)() const; |
| public: |
| //! Default constructor, no error. |
| ParseResult() : code_(kParseErrorNone), offset_(0) {} |
| //! Constructor to set an error. |
| ParseResult(ParseErrorCode code, size_t offset) : code_(code), offset_(offset) {} |
| |
| //! Get the error code. |
| ParseErrorCode Code() const { return code_; } |
| //! Get the error offset, if \ref IsError(), 0 otherwise. |
| size_t Offset() const { return offset_; } |
| |
| //! Explicit conversion to \c bool, returns \c true, iff !\ref IsError(). |
| operator BooleanType() const { return !IsError() ? &ParseResult::IsError : NULL; } |
| //! Whether the result is an error. |
| bool IsError() const { return code_ != kParseErrorNone; } |
| |
| bool operator==(const ParseResult& that) const { return code_ == that.code_; } |
| bool operator==(ParseErrorCode code) const { return code_ == code; } |
| friend bool operator==(ParseErrorCode code, const ParseResult & err) { return code == err.code_; } |
| |
| bool operator!=(const ParseResult& that) const { return !(*this == that); } |
| bool operator!=(ParseErrorCode code) const { return !(*this == code); } |
| friend bool operator!=(ParseErrorCode code, const ParseResult & err) { return err != code; } |
| |
| //! Reset error code. |
| void Clear() { Set(kParseErrorNone); } |
| //! Update error code and offset. |
| void Set(ParseErrorCode code, size_t offset = 0) { code_ = code; offset_ = offset; } |
| |
| private: |
| ParseErrorCode code_; |
| size_t offset_; |
| }; |
| |
| //! Function pointer type of GetParseError(). |
| /*! \ingroup RAPIDJSON_ERRORS |
| |
| This is the prototype for \c GetParseError_X(), where \c X is a locale. |
| User can dynamically change locale in runtime, e.g.: |
| \code |
| GetParseErrorFunc GetParseError = GetParseError_En; // or whatever |
| const RAPIDJSON_ERROR_CHARTYPE* s = GetParseError(document.GetParseErrorCode()); |
| \endcode |
| */ |
| typedef const RAPIDJSON_ERROR_CHARTYPE* (*GetParseErrorFunc)(ParseErrorCode); |
| |
| RAPIDJSON_NAMESPACE_END |
| |
| #ifdef __clang__ |
| RAPIDJSON_DIAG_POP |
| #endif |
| |
| #endif // RAPIDJSON_ERROR_ERROR_H_ |