Enum PatternMode 

pub enum PatternMode {
    Skip,
    Posix,
    Pcre2,
}

Controls PATTERN (regex) constraint validation in generated encode functions.

Without a regex library, PATTERN constraints are skipped and a comment is emitted documenting which flag enables runtime validation.

Variants

Skip

Emit a skip comment; no runtime validation (default).

Posix

Validate using POSIX ERE (<regex.h>, regcomp/regexec).

Requires linking with a POSIX-compatible C library. The generated code allocates a null-terminated copy of each string before calling regexec.

Pcre2

Validate using PCRE2 (<pcre2.h>, pcre2_compile/pcre2_match).

Requires linking against libpcre2-8. PCRE2 supports a superset of the POSIX ERE syntax and handles the full ASN.1 PATTERN value notation.

Trait Implementations

impl Clone for PatternMode

fn clone(&self) -> PatternMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatternMode

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

Formats the value using the given formatter.

impl Default for PatternMode

fn default() -> PatternMode

Returns the “default value” for a type.

impl Eq for PatternMode

impl PartialEq for PatternMode

fn eq(&self, other: &PatternMode) -> 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 StructuralPartialEq for PatternMode