pub struct StackStateMachine { /* private fields */ }Expand description
Stack state machine for grammar masking.
Tracks stack depth and the types of the top TYPE_WINDOW elements.
At each step, can produce a validity mask indicating which VOCAB
tokens are legal given the current stack state.
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Source§impl StackStateMachine
impl StackStateMachine
Sourcepub fn new(initial_depth: i32) -> Self
pub fn new(initial_depth: i32) -> Self
Create a new state machine with the given initial stack depth.
Sourcepub fn stack_depth(&self) -> i32
pub fn stack_depth(&self) -> i32
Current stack depth.
Sourcepub fn valid_mask(&self) -> Vec<f32>
pub fn valid_mask(&self) -> Vec<f32>
Produce a validity mask over the vocabulary. Returns VOCAB_SIZE floats: 0.0 = valid, -1e9 = masked (invalid).
Sourcepub fn type_encoding(&self) -> Vec<f32>
pub fn type_encoding(&self) -> Vec<f32>
Encode the type state of the top TYPE_WINDOW stack slots as a flat vector of 3*TYPE_WINDOW floats (one-hot per slot).
Sourcepub fn depth_for_embedding(&self, max_depth: usize) -> u32
pub fn depth_for_embedding(&self, max_depth: usize) -> u32
Clamped stack depth for embedding lookup (0..max_stack_depth-1).
Auto Trait Implementations§
impl Freeze for StackStateMachine
impl RefUnwindSafe for StackStateMachine
impl Send for StackStateMachine
impl Sync for StackStateMachine
impl Unpin for StackStateMachine
impl UnsafeUnpin for StackStateMachine
impl UnwindSafe for StackStateMachine
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