JSONparseri

JSONparseri is a software component designed to convert JSON text into native data structures within a program. It is typically distributed as a library or module and is available for many programming languages. The primary function of a JSONparseri is to read a text document encoded in JSON, validate its syntax against the JSON specification, and construct in-memory representations such as objects, arrays, strings, numbers, booleans, and null.

Two common architectural approaches are used: DOM-style parsers that build a complete in-memory tree representation of the JSON document, and streaming (SAX-like) parsers that emit events or tokens as the input is read. Streaming parsers are suited to large inputs or resource-constrained environments, since they avoid loading the entire document at once.

Compliance and extensions: Most JSONparseri implementations aim for strict RFC 8259 compliance, but some libraries offer lenient modes that accept nonstandard syntax such as comments or trailing commas. Error reporting typically includes the position in the input where a problem occurred.

Usage and ecosystem: In practice, JSONparseri appears as a function like parse or load in many languages, sometimes with separate serialization support for converting native structures back to JSON. Built-in parsers are included in languages such as JavaScript and Python, while other languages rely on external libraries (for example, Java, C#, and Go ecosystems).

See also: JSON, RFC 8259, data interchange formats.