# [−] [src] Struct regex_syntax::hir::Repetition

    pub struct Repetition {
        pub kind: RepetitionKind,
        pub greedy: bool,
        pub hir: Box<Hir>,
    }

The high-level intermediate representation of a repetition operator.

A repetition operator permits the repetition of an arbitrary sub-expression.

## Fields

`kind: RepetitionKind`

The kind of this repetition operator.

`greedy: bool`

Whether this repetition operator is greedy or not. A greedy operator will match as much as it can. A non-greedy operator will match as little as it can.

Typically, operators are greedy by default and are only non-greedy when a `?` suffix is used, e.g., `(expr)*` is greedy while `(expr)*?` is not. However, this can be inverted via the `U` "ungreedy" flag.

`hir: Box<Hir>`

The expression being repeated.

## Methods

### `impl Repetition` [src]

#### `pub fn is_match_empty(&self) -> bool` [src]

Returns true if and only if this repetition operator makes it possible to match the empty string.

Note that this is not defined inductively. For example, while `a*` will report `true`, `()+` will not, even though `()` matches the empty string and one or more occurrences of something that matches the empty string will always match the empty string. In order to get the inductive definition, see the corresponding method on `Hir`.

## Trait Implementations

### `impl PartialEq<Repetition> for Repetition` [src]

#### `fn eq(&self, other: &Repetition) -> bool` [src]

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

#### `fn ne(&self, other: &Repetition) -> bool` [src]

This method tests for `!=`.

### `impl Clone for Repetition` [src]

#### `fn clone(&self) -> Repetition` [src]

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`1.0.0 [src]

Performs copy-assignment from `source`. Read more

### `impl Eq for Repetition` [src]

### `impl Debug for Repetition` [src]

#### `fn fmt(&self, f: &mut Formatter) -> Result` [src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl Send for Repetition`

### `impl Sync for Repetition`

## Blanket Implementations

### `impl<T> From<T> for T` [src]

#### `fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `fn to_owned(&self) -> T` [src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `fn clone_into(&self, target: &mut T)` [src]

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

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U` [src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

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