Struct Pattern

pub struct Pattern { /* private fields */ }

A pattern that is used to match the input. The pattern is represented by a regular expression and a token type number. The token type number is used to identify the pattern in the scanner. The pattern also has an optional lookahead.

Implementations

impl Pattern

pub fn new(pattern: String, token_type: usize) -> Self

Create a new pattern.

pub fn with_lookahead(self, lookahead: Lookahead) -> Self

Create a new pattern with lookahead.

pub fn pattern(&self) -> &str

Get the pattern.

pub fn terminal_id(&self) -> usize

Get the token type.

pub fn lookahead(&self) -> Option<&Lookahead>

Get the lookahead.

Trait Implementations

impl Clone for Pattern

fn clone(&self) -> Pattern

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Pattern

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Pattern

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Pattern

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

Formats the value using the given formatter.

impl Hash for Pattern

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Pattern

fn eq(&self, other: &Pattern) -> 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 Serialize for Pattern

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Pattern

impl StructuralPartialEq for Pattern