Enum FragmentError 

#[non_exhaustive]
pub enum FragmentError {
    IdMismatch {
        index: usize,
        id: NodeId,
    },
    RootOutOfRange(NodeId),
    RootNotAtOrigin,
    SurfaceMismatch,
    ChildOutOfRange {
        parent: NodeId,
        child: NodeId,
    },
    MultipleParents(NodeId),
    Unreachable(NodeId),
    SourceIdMismatch {
        index: usize,
        id: SourceId,
    },
    UnknownSource {
        node: NodeId,
        source: SourceId,
    },
}

Why a fragment breaks the IR invariants.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

IdMismatch

A node is stored at an index other than its id.

Fields

index: usize

Position in nodes.

id: NodeId

Id stored there.

RootOutOfRange(NodeId)

The root id indexes no node.

RootNotAtOrigin

The root origin is not (0, 0).

SurfaceMismatch

The surface does not match the root’s width, height and depth.

ChildOutOfRange

A box lists a child id that indexes no node.

Fields

parent: NodeId

The box listing the child.

child: NodeId

The missing child id.

MultipleParents(NodeId)

A node is listed as a child more than once, or the root is listed as a child.

Unreachable(NodeId)

A node is not reachable from the root.

SourceIdMismatch

A source file is stored at an index other than its id.

Fields

index: usize

Position in sources.

id: SourceId

Id stored there.

UnknownSource

A node or entry refers to an unregistered source file.

Fields

node: NodeId

The node carrying the range.

source: SourceId

The unknown source id.

Trait Implementations

impl Clone for FragmentError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FragmentError

impl Debug for FragmentError

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

Formats the value using the given formatter.

impl Display for FragmentError

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

Formats the value using the given formatter.

impl Eq for FragmentError

impl Error for FragmentError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl PartialEq for FragmentError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FragmentError