Struct Limits 

pub struct Limits {
    pub decompressed_bytes: u64,
    pub compression_ratio: u64,
    pub rows_per_category: u64,
    pub nesting_depth: u32,
    pub dictionary_entries: u32,
}

Ceilings that turn hostile input into diagnostics rather than exhaustion.

Fields

decompressed_bytes: u64

Largest accepted size after decompression, in bytes.

Defaults to 16 GiB. The ratio ceiling (Self::compression_ratio) bounds expansion relative to the bytes supplied; this absolute ceiling additionally stops a hostile or corrupt input from exhausting memory before any parse. A caller reading a genuinely larger file raises it, or uses Limits::unbounded to opt out of every absolute ceiling.

compression_ratio: u64

Largest accepted ratio of decompressed to compressed size.

rows_per_category: u64

Largest accepted declared row count for one category.

Defaults to 2^28 rows; Limits::unbounded removes the ceiling.

nesting_depth: u32

Deepest accepted nesting.

dictionary_entries: u32

Largest accepted identifier dictionary.

Defaults to 2^24 entries; Limits::unbounded removes the ceiling.

Implementations

impl Limits

pub const fn unbounded() -> Limits

Limits with no absolute ceiling, for trusted input of any size.

The compression-ratio and nesting-depth ceilings still apply: they protect against malformed input rather than large input.

pub fn exceeded(limit: &'static str, value: impl Display) -> Diagnostic

Builds the registered finding for a violated ceiling.

Trait Implementations

impl Clone for Limits

fn clone(&self) -> Limits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Limits

impl Debug for Limits

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

Formats the value using the given formatter.

impl Default for Limits

fn default() -> Limits

Returns the “default value” for a type.

impl Eq for Limits

impl PartialEq for Limits

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Limits