Enum macro_railroad::lowering::Matcher

pub enum Matcher {
    Choice(Vec<Matcher>),
    Comment(String),
    Empty,
    InternalMacroHint,
    Group(Box<Matcher>),
    Literal(String),
    Optional(Box<Matcher>),
    Sequence(Vec<Matcher>),
    Repeat {
        content: Box<Matcher>,
        seperator: Option<String>,
    },
    NonTerminal {
        name: String,
        fragment: Fragment,
    },
}

A more coarse superset of parser::Matcher.

Some variants of parser::Matcher share the same representation here. Variants like Empty or Comment are not produced by parser::Matcher but due to transformations applied in this module.

Variants

Choice(Vec<Matcher>)

Comment(String)

Empty

InternalMacroHint

Group(Box<Matcher>)

Literal(String)

Optional(Box<Matcher>)

Sequence(Vec<Matcher>)

Repeat

Fields of Repeat

content: Box<Matcher>seperator: Option<String>

NonTerminal

Fields of NonTerminal

name: Stringfragment: Fragment

Implementations

impl Matcher

pub fn accept_mut(&mut self, visitor: &mut impl TransformVisitor)

pub fn accept(&self, visitor: &mut impl InspectVisitor)

pub fn any<F: FnMut(&Self) -> bool>(&self, predicate: F) -> bool

pub fn contains(&self, needle: &Matcher) -> bool

Trait Implementations

impl Clone for Matcher

fn clone(&self) -> Matcher

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Matcher

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

Formats the value using the given formatter.

impl Eq for Matcher

impl From<Matcher> for Matcher

fn from(m: Matcher) -> Matcher

Performs the conversion.

impl From<Rule> for Matcher

fn from(r: Rule) -> Matcher

Performs the conversion.

impl Hash for Matcher

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, 

Feeds a slice of this type into the given [Hasher].

impl Ord for Matcher

fn cmp(&self, other: &Matcher) -> Ordering

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<Matcher> for Matcher

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

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

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

This method tests for !=.

impl PartialOrd<Matcher> for Matcher

fn partial_cmp(&self, other: &Matcher) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Matcher) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Matcher) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Matcher) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Matcher) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for Matcher

impl StructuralPartialEq for Matcher