Struct rustc_middle::middle::region::FirstStatementIndex

pub struct FirstStatementIndex {
    private: u32,
}

Represents a subscope of block for a binding that is introduced by block.stmts[first_statement_index]. Such subscopes represent a suffix of the block. Note that each subscope does not include the initializer expression, if any, for the statement indexed by first_statement_index.

For example, given { let (a, b) = EXPR_1; let c = EXPR_2; ... }:

• The subscope with first_statement_index == 0 is scope of both a and b; it does not include EXPR_1, but does include everything after that first let. (If you want a scope that includes EXPR_1 as well, then do not use Scope::Remainder, but instead another Scope that encompasses the whole block, e.g., Scope::Node.

• The subscope with first_statement_index == 1 is scope of c, and thus does not include EXPR_2, but covers the ....

Fields

private: u32

Implementations

impl FirstStatementIndex

pub const MAX_AS_U32: u32

pub const MAX: Self

pub const fn from_usize(value: usize) -> Self

pub const fn from_u32(value: u32) -> Self

pub const unsafe fn from_u32_unchecked(value: u32) -> Self

pub const fn index(self) -> usize

Extracts the value of this index as an integer.

pub const fn as_u32(self) -> u32

Extracts the value of this index as a u32.

pub const fn as_usize(self) -> usize

Extracts the value of this index as a usize.

Trait Implementations

impl Add<usize> for FirstStatementIndex

type Output = Self

The resulting type after applying the + operator.

pub fn add(self, other: usize) -> Self

Performs the + operation.

impl Clone for FirstStatementIndex

pub fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for FirstStatementIndex

impl Debug for FirstStatementIndex

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

Formats the value using the given formatter.

impl<D: Decoder> Decodable<D> for FirstStatementIndex

pub fn decode(d: &mut D) -> Result<Self, D::Error>

impl<E: Encoder> Encodable<E> for FirstStatementIndex

pub fn encode(&self, e: &mut E) -> Result<(), E::Error>

impl Eq for FirstStatementIndex

impl From<FirstStatementIndex> for u32

pub fn from(v: FirstStatementIndex) -> u32

Performs the conversion.

impl From<FirstStatementIndex> for usize

pub fn from(v: FirstStatementIndex) -> usize

Performs the conversion.

impl From<u32> for FirstStatementIndex

pub fn from(value: u32) -> Self

Performs the conversion.

impl From<usize> for FirstStatementIndex

pub fn from(value: usize) -> Self

Performs the conversion.

impl Hash for FirstStatementIndex

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for FirstStatementIndex

pub fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)

impl Idx for FirstStatementIndex

pub fn new(value: usize) -> Self

pub fn index(self) -> usize

pub fn increment_by(&mut self, amount: usize)

pub fn plus(self, amount: usize) -> Self

impl Ord for FirstStatementIndex

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

#[must_use]pub 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<FirstStatementIndex> for FirstStatementIndex

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

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

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

This method tests for !=.

impl PartialOrd<FirstStatementIndex> for FirstStatementIndex

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

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

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

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

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

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

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

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

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

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

impl Step for FirstStatementIndex

pub fn steps_between(start: &Self, end: &Self) -> Option<usize>

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

recently redesigned

Returns the number of successor steps required to get from start to end.

pub fn forward_checked(start: Self, u: usize) -> Option<Self>

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

recently added

Returns the value that would be obtained by taking the successor of self count times.

pub fn backward_checked(start: Self, u: usize) -> Option<Self>

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

recently added

Returns the value that would be obtained by taking the successor of self count times.

pub fn forward(start: Self, count: usize) -> Self

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

recently added

Returns the value that would be obtained by taking the successor of self count times.

pub unsafe fn forward_unchecked(start: Self, count: usize) -> Self

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

niche optimization path

Returns the value that would be obtained by taking the successor of self count times.

pub fn backward(start: Self, count: usize) -> Self

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

recently added

Returns the value that would be obtained by taking the predecessor of self count times.

pub unsafe fn backward_unchecked(start: Self, count: usize) -> Self

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

niche optimization path

Returns the value that would be obtained by taking the predecessor of self count times.

impl StructuralEq for FirstStatementIndex

impl StructuralPartialEq for FirstStatementIndex