Struct ChoiceGuard 

pub struct ChoiceGuard { /* private fields */ }

Implementations

impl ChoiceGuard

pub fn expr(&self) -> Option<SyntaxNode>

The guard’s condition expression — CHOICE_GUARD’s first child node (L_BRACE KW_IF expression (AS_BINDING)? R_BRACE; the braces/keyword are tokens).

pub fn as_binding(&self) -> Option<AsBinding>

The as NAME binding, when the author wrote one. Implemented (issue #1508): brink-ir’s choice lowering (hir::Choice::binding) captures at presentation time via the same OptionBind frame-slot machinery the statement/template forms already use (parser/choice.rs::choice_guard’s doc). E146 is retired.

Trait Implementations

impl AstNode for ChoiceGuard

fn can_cast(kind: SyntaxKind) -> bool

Returns true for a node with a SyntaxKind this type can wrap.

fn cast(node: SyntaxNode) -> Option<Self>

Try to cast a generic SyntaxNode into this typed wrapper.

fn syntax(&self) -> &SyntaxNode

Access the underlying SyntaxNode.

impl Clone for ChoiceGuard

fn clone(&self) -> ChoiceGuard

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChoiceGuard

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

Formats the value using the given formatter.

impl Display for ChoiceGuard

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

Formats the value using the given formatter.

impl Eq for ChoiceGuard

impl Hash for ChoiceGuard

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 ChoiceGuard

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ChoiceGuard