[#BloombergLP-bdljsn]
= xref:BloombergLP.adoc[BloombergLP]::bdljsn
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Components providing JSON parsing and generation facilities.

== Types

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdljsn/Error.adoc[`Error`] 
| This unconstrained (value‐semantic) attribute class specifies a description of an error in processing a (JSON) document.
| xref:BloombergLP/bdljsn/Json.adoc[`Json`] 
| This type is designed to be a thin wrapper around a variant of the possible JSON types, using a BDE‐style variant interface.
| xref:BloombergLP/bdljsn/JsonArray.adoc[`JsonArray`] 
| JSON array value providing a sequence‐container‐like interface.
| xref:BloombergLP/bdljsn/JsonNull-0b.adoc[`JsonNull`] 
| This type represents the JSON null value. There is only 1 value of this type, so all objects compare equal, hash to the same value, etc.
| xref:BloombergLP/bdljsn/JsonNumber.adoc[`JsonNumber`] 
| This class defines a value‐semantic type that represents a JSON number.
| xref:BloombergLP/bdljsn/JsonObject.adoc[`JsonObject`] 
| JSON object value providing an associative‐container‐like interface.
| xref:BloombergLP/bdljsn/JsonObject_MemberInitializer.adoc[`JsonObject_MemberInitializer`] 
| Component‐private helper that captures key/value pairs for object list‐initialization.
| xref:BloombergLP/bdljsn/JsonTestSuiteUtil.adoc[`JsonTestSuiteUtil`] 
| This utility `struct` provides a namespace for the test points of the _JSON_ _Test_ _Suite_.
| xref:BloombergLP/bdljsn/JsonType.adoc[`JsonType`] 
| This `struct` provides a namespace for enumerating the set value types of the JSON language. See `Enum` in the TYPES sub‐section for details.
| xref:BloombergLP/bdljsn/JsonUtil.adoc[`JsonUtil`] 
| This `struct` provides a namespace for utility functions that provide `read` and `write` operations to/from `Json` objects.
| xref:BloombergLP/bdljsn/Json_ConstructVisitor.adoc[`Json_ConstructVisitor`] 
| This component‐private class is used to construct a `Json` object from a `Json_Initializer` object. `Json_Initializer` is a variant class defined below.
| xref:BloombergLP/bdljsn/Json_Initializer.adoc[`Json_Initializer`] 
| Component‐private helper that captures values for JSON list‐initialization.
| xref:BloombergLP/bdljsn/Json_StringInvariantGuard.adoc[`Json_StringInvariantGuard`] 
| This is a component‐private guard class.
| xref:BloombergLP/bdljsn/Json_VisitUtil.adoc[`Json_VisitUtil`] 
| Component‐private utility providing helpers for `Json::visit`.
| xref:BloombergLP/bdljsn/Location.adoc[`Location`] 
| This unconstrained (value‐semantic) attribute class specifies a location in a (JSON) document.
| xref:BloombergLP/bdljsn/NumberUtil.adoc[`NumberUtil`] 
| Namespace for utilities converting between JSON number text and numeric types.
| xref:BloombergLP/bdljsn/NumberUtil_IsSigned.adoc[`NumberUtil_IsSigned`] 
| Metafunction yielding whether integral `t_TYPE` is signed.
| xref:BloombergLP/bdljsn/ReadOptions.adoc[`ReadOptions`] 
| Options for reading a JSON document.
| xref:BloombergLP/bdljsn/StringUtil.adoc[`StringUtil`] 
| This `struct` provides utility functions for converting between UTF‐8 sequences and JSON strings.
| xref:BloombergLP/bdljsn/Tokenizer.adoc[`Tokenizer`] 
| Mechanism for traversing JSON data one node at a time.
| xref:BloombergLP/bdljsn/WriteOptions.adoc[`WriteOptions`] 
| Options for writing a JSON document.
| xref:BloombergLP/bdljsn/WriteStyle.adoc[`WriteStyle`] 
| Namespace for formatting styles used when writing a JSON document.
|===


== Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdljsn/hashAppend-05.adoc[`hashAppend`] 
| `hashAppend` overloads
| xref:BloombergLP/bdljsn/operator_json.adoc[`operator""_json`] 
| Return a `bdljsn::Json` object from the specified JSON literal text.
| xref:BloombergLP/bdljsn/swap-0b.adoc[`swap`] 
| `swap` overloads
| xref:BloombergLP/bdljsn/operator_lshift-07d.adoc[`operator<<`] 
| Stream insertion operators
| xref:BloombergLP/bdljsn/operator_eq-09.adoc[`operator==`] 
| Equality operators
| xref:BloombergLP/bdljsn/operator_not_eq-085.adoc[`operator!=`] 
| Inequality operators
|===


== Variables

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdljsn/jsonNull-08.adoc[`jsonNull`] 
| The singular value of the `JsonNull` type.
|===



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