Struct DecodeBudget 

pub struct DecodeBudget { /* private fields */ }

Running counters for a single decode. Construct one per decode call.

Implementations

impl DecodeBudget

pub fn new(limits: DecodeLimits) -> Self

Create a fresh budget with zeroed counters for the given limits.

pub fn limits(&self) -> DecodeLimits

The DecodeLimits this budget enforces.

pub fn check_input_bytes(&self, codec: CodecId, len: usize) -> Result<()>

Check input size against DecodeLimits::max_input_bytes.

pub fn check_tokens(&self, codec: CodecId, count: usize) -> Result<()>

Check token count against DecodeLimits::max_tokens.

pub fn check_collection_len(&self, codec: CodecId, len: usize) -> Result<()>

Check collection length against DecodeLimits::max_collection_len.

pub fn check_string_bytes(&self, codec: CodecId, len: usize) -> Result<()>

Check string length against DecodeLimits::max_string_bytes.

pub fn check_blob_bytes(&self, codec: CodecId, len: usize) -> Result<()>

Check blob length against DecodeLimits::max_blob_bytes.

pub fn add_trivia(&mut self, codec: CodecId) -> Result<()>

Charge one trivia item and check the running total against DecodeLimits::max_trivia_items.

pub fn enter_node(&mut self, codec: CodecId, depth: usize) -> Result<()>

Charge one Expr node and check both the running node count against DecodeLimits::max_expr_nodes and depth against DecodeLimits::max_depth.