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