Struct JsonConstraint 

pub struct JsonConstraint { /* private fields */ }

Constrains generation to syntactically valid JSON.

Tracks nesting depth and parse state character by character.

Implementations

impl JsonConstraint

pub fn new() -> Self

Create a new JsonConstraint in its initial state.

pub fn current_state(&self) -> &JsonParseState

Current parse state.

pub fn depth(&self) -> usize

Current nesting depth.

pub fn is_in_string(&self) -> bool

Returns true if we are currently inside a string.

pub fn valid_next_chars(&self) -> Vec<char>

Returns the set of ASCII characters that are valid as the next character given the current parse state.

Trait Implementations

impl Default for JsonConstraint

fn default() -> Self

Returns the “default value” for a type.

impl TokenConstraint for JsonConstraint

fn allowed_tokens( &self, _generated: &[u32], vocab_size: usize, ) -> Option<Vec<bool>>

Given the tokens generated so far, return a bitmask of allowed next tokens.

fn advance(&mut self, token: u32) -> bool

Called after a token is committed.

fn is_complete(&self) -> bool

Returns true if the current state is a valid terminal state.

fn reset(&mut self)

Reset the constraint to its initial state.

fn name(&self) -> &str

Human-readable name for debugging and logging.