JSON for Modern C++ 3.9.1

__pad3__
accept
accept
accept
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array
array_t
at
at
at
at
at
at
back
back
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
basic_json
begin
begin
binary
binary
binary
binary
binary_t
boolean_t
cbegin
cbor_tag_handler_t
cend
clear
const_iterator
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contains
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detail::external_constructor
diff
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end
end
erase
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error_handler_t
exception
find
find
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from_bson
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front
front
get
get
get
get
get
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get_allocator
get_binary
get_binary
get_ptr
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get_ref
get_ref
get_to
get_to
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initializer_list_t
input_format_t
insert
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insert_iterator
invalid_iterator
is_array
is_binary
is_boolean
is_discarded
is_null
is_number
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is_number_unsigned
is_object
is_primitive
is_string
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items
items
iterator
iterator_wrapper
iterator_wrapper
json_pointer
json_sax_t
json_serializer
m_value
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merge_patch
meta
number_float_t
number_integer_t
number_unsigned_t
object
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operator value_t
operator ValueType
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parse
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parse_error
parse_event_t
parser_callback_t
patch
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rbegin
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size_type
string_t
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to_bson
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to_msgpack
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type
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~basic_json
| ## ◆ parse_error template<template< typename U, typename V, typename... Args > class ObjectType = std::map, template< typename U, typename... Args > class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer, class BinaryType = std::vector<std::uint8_t>>
using nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::parse_error = detail::parse_error
This exception is thrown by the library when a parse error occurs. Parse errors can occur during the deserialization of JSON text, CBOR, MessagePack, as well as when using JSON Patch. Member byte holds the byte index of the last read character in the input file. Exceptions have ids 1xx.
name / id | example message | description
--- | --- | ---
json.exception.parse_error.101 | parse error at 2: unexpected end of input; expected string literal | This error indicates a syntax error while deserializing a JSON text. The error message describes that an unexpected token (character) was encountered, and the member byte indicates the error position.
json.exception.parse_error.102 | parse error at 14: missing or wrong low surrogate | JSON uses the `\uxxxx` format to describe Unicode characters. Code points above above 0xFFFF are split into two `\uxxxx` entries ("surrogate pairs"). This error indicates that the surrogate pair is incomplete or contains an invalid code point.
json.exception.parse_error.103 | parse error: code points above 0x10FFFF are invalid | Unicode supports code points up to 0x10FFFF. Code points above 0x10FFFF are invalid.
json.exception.parse_error.104 | parse error: JSON patch must be an array of objects | RFC 6902 requires a JSON Patch document to be a JSON document that represents an array of objects.
json.exception.parse_error.105 | parse error: operation must have string member 'op' | An operation of a JSON Patch document must contain exactly one "op" member, whose value indicates the operation to perform. Its value must be one of "add", "remove", "replace", "move", "copy", or "test"; other values are errors.
json.exception.parse_error.106 | parse error: array index '01' must not begin with '0' | An array index in a JSON Pointer (RFC 6901) may be `0` or any number without a leading `0`.
json.exception.parse_error.107 | parse error: JSON pointer must be empty or begin with '/' - was: 'foo' | A JSON Pointer must be a Unicode string containing a sequence of zero or more reference tokens, each prefixed by a `/` character.
json.exception.parse_error.108 | parse error: escape character '~' must be followed with '0' or '1' | In a JSON Pointer, only `~0` and `~1` are valid escape sequences.
json.exception.parse_error.109 | parse error: array index 'one' is not a number | A JSON Pointer array index must be a number.
json.exception.parse_error.110 | parse error at 1: cannot read 2 bytes from vector | When parsing CBOR or MessagePack, the byte vector ends before the complete value has been read.
json.exception.parse_error.112 | parse error at 1: error reading CBOR; last byte: 0xF8 | Not all types of CBOR or MessagePack are supported. This exception occurs if an unsupported byte was read.
json.exception.parse_error.113 | parse error at 2: expected a CBOR string; last byte: 0x98 | While parsing a map key, a value that is not a string has been read.
json.exception.parse_error.114 | parse error: Unsupported BSON record type 0x0F | The parsing of the corresponding BSON record type is not implemented (yet).
json.exception.parse_error.115 | parse error at byte 5: syntax error while parsing UBJSON high-precision number: invalid number text: 1A | A UBJSON high-precision number could not be parsed.
  Note For an input with n bytes, 1 is the index of the first character and n+1 is the index of the terminating null byte or the end of file. This also holds true when reading a byte vector (CBOR or MessagePack). Example The following code shows how a `parse_error` exception can be caught. 1 #include <iostream> 2 #include <nlohmann/json.hpp> 3 4 using json = nlohmann::json; 5 6 int main() 7 { 8 try 9 { 10 // parsing input with a syntax error 11 json::parse("[1,2,3,]"); 12 } 13 catch (json::parse_error& e) 14 { 15 // output exception information 16 std::cout << "message: " << e.what() << '\n' 17 << "exception id: " << e.id << '\n' 18 << "byte position of error: " << e.byte << std::endl; 19 } 20 } Output (play with this example online):
      message: [json.exception.parse_error.101] parse error at line 1, column 8: syntax error while parsing value - unexpected ']'; expected '[', '{', or a literal
      exception id: 101
      byte position of error: 8
  The example code above can be translated with
      g++ -std=c++11 -Isingle_include doc/examples/parse_error.cpp -o parse_error
See also - exception for the base class of the library exceptions - invalid_iterator for exceptions indicating errors with iterators - type_error for exceptions indicating executing a member function with a wrong type - out_of_range for exceptions indicating access out of the defined range - other_error for exceptions indicating other library errors Since version 3.0.0 Definition at line 16762 of file json.hpp.

nlohmann::basic_json::parse
static basic_json parse(InputType &&i, const parser_callback_t cb=nullptr, const bool allow_exceptions=true, const bool ignore_comments=false)
deserialize from a compatible input
Definition: json.hpp:23169
nlohmann::basic_json::parse_error
detail::parse_error parse_error
exception indicating a parse error
Definition: json.hpp:16762
nlohmann::json
basic_json<> json
default JSON class
Definition: json.hpp:2940