Enum Decl 

pub enum Decl<N: TreeNode = SyntaxNode> {
    Bound(BoundDecl<N>),
    Unbound(UnboundDecl<N>),
}

Represents a declaration in an input section.

Variants

Bound(BoundDecl<N>)

The declaration is bound.

Unbound(UnboundDecl<N>)

The declaration is unbound.

Implementations

impl<N: TreeNode> Decl<N>

pub fn can_cast(kind: SyntaxKind) -> bool

Returns whether or not the given syntax kind can be cast to Decl.

pub fn cast(inner: N) -> Option<Self>

Casts the given node to Decl.

Returns None if the node cannot be cast.

pub fn inner(&self) -> &N

Gets a reference to the inner node.

pub fn env(&self) -> Option<EnvKeyword<N::Token>>

Gets the env token, if present.

This may only return a token for task inputs and private declarations (WDL 1.2+).

pub fn ty(&self) -> Type<N>

Gets the type of the declaration.

pub fn name(&self) -> Ident<N::Token>

Gets the name of the declaration.

pub fn expr(&self) -> Option<Expr<N>>

Gets the expression of the declaration.

Returns None for unbound declarations.

pub fn as_bound_decl(&self) -> Option<&BoundDecl<N>>

Attempts to get a reference to the inner BoundDecl.

• If self is a Decl::Bound, then a reference to the inner BoundDecl is returned wrapped in Some.
• Else, None is returned.

pub fn into_bound_decl(self) -> Option<BoundDecl<N>>

Consumes self and attempts to return the inner BoundDecl.

• If self is a Decl::Bound, then the inner BoundDecl is returned wrapped in Some.
• Else, None is returned.

pub fn unwrap_bound_decl(self) -> BoundDecl<N>

Unwraps the declaration into a bound declaration.

Panics

Panics if the declaration is not a bound declaration.

pub fn as_unbound_decl(&self) -> Option<&UnboundDecl<N>>

Attempts to get a reference to the inner UnboundDecl.

• If self is a Decl::Unbound, then a reference to the inner UnboundDecl is returned wrapped in Some.
• Else, None is returned.

pub fn into_unbound_decl(self) -> Option<UnboundDecl<N>>

Consumes self and attempts to return the inner UnboundDecl.

• If self is a Decl::Unbound, then the inner UnboundDecl is returned wrapped in Some.
• Else, None is returned.

pub fn unwrap_unbound_decl(self) -> UnboundDecl<N>

Unwraps the declaration into an unbound declaration.

Panics

Panics if the declaration is not an unbound declaration.

pub fn child(node: &N) -> Option<Self>

Finds the first child that can be cast to a Decl.

pub fn children(node: &N) -> impl Iterator<Item = Self> + use<'_, N>

Finds all children that can be cast to a Decl.

Trait Implementations

impl<N: Clone + TreeNode> Clone for Decl<N>

fn clone(&self) -> Decl<N>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<N: Debug + TreeNode> Debug for Decl<N>

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

Formats the value using the given formatter.

impl<N: PartialEq + TreeNode> PartialEq for Decl<N>

fn eq(&self, other: &Decl<N>) -> 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<N: Eq + TreeNode> Eq for Decl<N>

impl<N: TreeNode> StructuralPartialEq for Decl<N>