Struct LoopShell 

#[non_exhaustive]
pub struct LoopShell {
    pub kind: LoopKind,
    pub has_condition: bool,
    pub has_continue: bool,
    pub declares_iterator: bool,
    pub label: Option<String>,
}

Loop shell payload.

Models the static shape of a while/until, C-style for, or foreach loop: its surface form, whether a static condition is present, whether a continue block follows, whether the loop declares its own iterator, and any controlling label inherited from an enclosing labeled statement.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

kind: LoopKind

Loop surface form.

has_condition: bool

Whether the loop has a statically present condition expression.

while/until always have one; C-style for may omit it (for (;;)); foreach iterates a list rather than testing a condition, so this is false.

has_continue: bool

Whether a trailing continue { ... } block is present.

declares_iterator: bool

Whether the loop binds its own iterator variable (foreach my $x).

label: Option<String>

Controlling label from an enclosing LABEL: statement, if any.

Trait Implementations

impl Clone for LoopShell

fn clone(&self) -> LoopShell

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LoopShell

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

Formats the value using the given formatter.

impl Eq for LoopShell

impl PartialEq for LoopShell

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