Enum pica_record::matcher::TagMatcher

pub enum TagMatcher {
    Tag(Tag),
    Pattern([Vec<u8>; 4], String),
}

A matcher that matches against a TagRef.

Variants

Tag(Tag)

Pattern([Vec<u8>; 4], String)

Implementations

impl TagMatcher

pub fn new(matcher: &str) -> Result<Self, ParseMatcherError>

Creates a new TagMatcher.

Errors

This function fails if the given expression is not a valid tag matcher.

Example

use pica_record::matcher::TagMatcher;

let _matcher = TagMatcher::new("041[A@]")?;
let _matcher = TagMatcher::new("003@")?;
let _matcher = TagMatcher::new("00.@")?;

pub fn is_match(&self, tag: &TagRef<'_>) -> bool

Returns true if the given tag matches against the matcher.

Example

use pica_record::matcher::TagMatcher;
use pica_record::primitives::TagRef;

let matcher = TagMatcher::new("00[3-5]@")?;
assert!(!matcher.is_match(&TagRef::new("002@")?));
assert!(matcher.is_match(&TagRef::new("003@")?));

Trait Implementations

impl Clone for TagMatcher

fn clone(&self) -> TagMatcher

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TagMatcher

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

Formats the value using the given formatter.

impl Display for TagMatcher

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

Formats the tag matcher as a human-readable string.

Example

use pica_record::matcher::TagMatcher;

let matcher = TagMatcher::new("00[3-5]@")?;
assert_eq!(matcher.to_string(), "00[3-5]@");

let matcher = TagMatcher::new("003@")?;
assert_eq!(matcher.to_string(), "003@");

impl PartialEq for TagMatcher

fn eq(&self, other: &TagMatcher) -> 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 TagMatcher