Struct JsonModeStrategy 

pub struct JsonModeStrategy {
    pub use_system_message: bool,
}

JSON Mode strategy for providers that only support basic JSON object mode.

This is used for providers like DeepSeek that don’t support JSON Schema but can output JSON objects when instructed via prompt.

This strategy:

1. Sets response_format to JsonObject
2. Injects the schema into the system prompt to guide the model

Fields

use_system_message: bool

Whether to inject schema as a system message (true) or append to last user message (false)

Implementations

impl JsonModeStrategy

pub fn new() -> Self

Create a new JSON Mode strategy that uses system messages

pub fn with_system_message(use_system_message: bool) -> Self

Create a new JSON Mode strategy with configurable message injection

Trait Implementations

impl Clone for JsonModeStrategy

fn clone(&self) -> JsonModeStrategy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JsonModeStrategy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for JsonModeStrategy

fn default() -> Self

Returns the “default value” for a type.

impl JsonOutputStrategy for JsonModeStrategy

fn name(&self) -> &str

Get the strategy name for debugging

fn apply( &self, req: &mut ChatCompletionRequest, schema: &Value, ) -> Result<(), AiError>

Apply this strategy to a chat completion request to enable JSON output.