// 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"
/*! \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 {
//! 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_; }
//! Conversion to \c bool, returns \c true, iff !\ref IsError().
operator bool()
const {
return !IsError(); }
//! 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 == er
r.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
#endif // RAPIDJSON_ERROR_ERROR_H__