Struct DecodeLimits 

pub struct DecodeLimits {
    pub max_input_bytes: usize,
    pub max_depth: usize,
    pub max_total_items: usize,
    pub max_array_len: usize,
    pub max_map_len: usize,
    pub max_bytes_len: usize,
    pub max_text_len: usize,
}

Decode-time resource limits for validation and decoding.

Limits are enforced deterministically and must not depend on background timers.

Fields

max_input_bytes: usize

Maximum total input length in bytes.

max_depth: usize

Maximum nesting depth.

max_total_items: usize

Maximum total count of container items: sum(array_len) + sum(2 * map_pairs) across the entire decoded item (maps count both keys and values).

max_array_len: usize

Maximum array length.

max_map_len: usize

Maximum map length (pairs).

max_bytes_len: usize

Maximum byte-string length (also applies to bignum magnitudes).

max_text_len: usize

Maximum text-string length in UTF-8 bytes.

Implementations

impl DecodeLimits

pub fn for_bytes(max_message_bytes: usize) -> Self

Construct conservative limits derived from a maximum message size.

The defaults are:

• max_input_bytes = max_message_bytes
• max_total_items = max_message_bytes
• max_bytes_len = max_message_bytes
• max_text_len = max_message_bytes
• max_array_len and max_map_len are capped by DEFAULT_MAX_CONTAINER_LEN

This is a pragmatic baseline. Production deployments should tune these explicitly.

Trait Implementations

impl Clone for DecodeLimits

fn clone(&self) -> DecodeLimits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DecodeLimits

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

Formats the value using the given formatter.

impl PartialEq for DecodeLimits

fn eq(&self, other: &DecodeLimits) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for DecodeLimits

impl Eq for DecodeLimits

impl StructuralPartialEq for DecodeLimits