TJsonReader Class

Provides a forward-only, streaming JSON reader for parsing JSON documents.

Remarks

Reads JSON tokens sequentially from a string or stream. The reader maintains a state machine that tracks the current position and validates the JSON structure.

Syntax

Unit: Bcl.Json.Reader

TJsonReader = class(TObject);

Constructors

Name	Description
Create	Overloaded Create(string) Create(TStream)

Methods

Name	Description
Eof	Indicates whether the reader has reached the end of the JSON document.
HasNext	Indicates whether more elements exist in the current array or object.
IsFloat	Indicates whether the next numeric value is a floating-point number.
IsInt64	Indicates whether the next numeric value is a 64-bit integer.
IsNull	Indicates whether the next token is a JSON null value.
Path	Returns the current JSON path in the document.
Peek	Returns the type of the next token without consuming it.
PreviousPath	Returns the JSON path of the previously read element.
ReadBeginArray	Reads the beginning of a JSON array token.
ReadBeginObject	Reads the beginning of a JSON object token.
ReadBoolean	Reads and returns the next value as a boolean.
ReadDouble	Reads and returns the next value as a double-precision floating-point number.
ReadEndArray	Reads the end of a JSON array token.
ReadEndObject	Reads the end of a JSON object token.
ReadInt64	Reads and returns the next value as a 64-bit integer.
ReadInteger	Reads and returns the next value as an integer.
ReadName	Reads and returns the next property name in a JSON object.
ReadNull	Reads and consumes a JSON null value.
ReadString	Reads and returns the next value as a string.
SkipValue	Skips the next value or entire structured element (object or array) in the JSON stream.