Struct hyperscan_sys::hs_expr_ext

#[repr(C)]
pub struct hs_expr_ext {
    pub flags: c_ulonglong,
    pub min_offset: c_ulonglong,
    pub max_offset: c_ulonglong,
    pub min_length: c_ulonglong,
    pub edit_distance: c_uint,
    pub hamming_distance: c_uint,
}

A structure containing additional parameters related to an expression, passed in at build time to @ref hs_compile_ext_multi() or @ref hs_expression_ext_info.

These parameters allow the set of matches produced by a pattern to be constrained at compile time, rather than relying on the application to process unwanted matches at runtime.

Fields

flags: c_ulonglong

Flags governing which parts of this structure are to be used by the compiler. See @ref HS_EXT_FLAG.

min_offset: c_ulonglong

The minimum end offset in the data stream at which this expression should match successfully. To use this parameter, set the @ref HS_EXT_FLAG_MIN_OFFSET flag in the hs_expr_ext::flags field.

max_offset: c_ulonglong

The maximum end offset in the data stream at which this expression should match successfully. To use this parameter, set the @ref HS_EXT_FLAG_MAX_OFFSET flag in the hs_expr_ext::flags field.

min_length: c_ulonglong

The minimum match length (from start to end) required to successfully match this expression. To use this parameter, set the @ref HS_EXT_FLAG_MIN_LENGTH flag in the hs_expr_ext::flags field.

edit_distance: c_uint

Allow patterns to approximately match within this edit distance. To use this parameter, set the @ref HS_EXT_FLAG_EDIT_DISTANCE flag in the hs_expr_ext::flags field.

hamming_distance: c_uint

Allow patterns to approximately match within this Hamming distance. To use this parameter, set the @ref HS_EXT_FLAG_HAMMING_DISTANCE flag in the hs_expr_ext::flags field.

Trait Implementations

impl Clone for hs_expr_ext

fn clone(&self) -> hs_expr_ext

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for hs_expr_ext

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

Formats the value using the given formatter.

impl Default for hs_expr_ext

fn default() -> hs_expr_ext

Returns the “default value” for a type.

impl PartialEq<hs_expr_ext> for hs_expr_ext

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for hs_expr_ext

impl StructuralPartialEq for hs_expr_ext