MarkedToolCallDecoder class

Splits a raw token stream into Microsoft.Extensions.AI updates for any family without a reasoning channel.

Prose before openMarker is emitted as TextContent. The first openMarker flips the decoder into buffering mode: everything from the marker onward is accumulated and, when the stream ends, handed to parse, which returns the trailing prose plus the FunctionCallContents. A FormatException from parse (a truncated or malformed call) surfaces the raw tail as text rather than erroring the whole turn.

Text and tool calls are emitted in separate updates on purpose: FunctionInvokingChatClient suppresses any update that carries a function call, so combining them in one update would drop the prose.

Constructors

MarkedToolCallDecoder({required String openMarker, required ParsedTurn parse(String generated)})

Creates a decoder that buffers on openMarker and delegates to parse.

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

openMarker → String

The literal marker that begins a tool-call region.

final

parse → ParsedTurn Function(String generated)

Parses a buffered tail (which begins with openMarker) into a turn.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

decode(Stream<String> tokens) → Stream<ChatResponseUpdate>

Splits tokens into prose and tool-call updates.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited