This is a library of IEC61131-3 function blocks to parse and read JSON text. The text can be exchanged in files or text buffers.

The IEC61131-3 manages JSON data in memory as a structured tree of « nodes ».

Each node represent either a single JSON value or a complex JSON container (array or object).

JSON nodes represent a JSON value and can be:

• a single numerical value
• a single character string
• an array of values
• a structured object

Example:

Functions are available for:

• Constructing a tree of nodes in memory.
• Exploring a tree of nodes in memory.
• Parsing some JSON text to build a tree of nodes in memory.
• Writing JSON text which represents a tree of nodes in memory.

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