Enum LinkError 

#[non_exhaustive]
pub enum LinkError {
    IncompleteSchema(IncompleteSchemaError),
    ActionEntityTypeDeclared(EntityType),
    DuplicateEntityType(EntityType),
    DuplicateAction(EntityUID),
    ExternalIsEnum(EntityType),
    DefinedEntityAncestorsChanged(EntityType),
    ExternalActionParentsMismatch(EntityUID),
    ShadowsBuiltinType(EntityType),
    Schema(SchemaError),
}

Errors reported by Linker::link, and by the callers that require a linked schema to be complete.

Separate from SchemaError on purpose. Constructing a partial schema succeeds, so incompleteness is not a construction failure, and linking has failure modes that no schema constructor can produce.

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.

IncompleteSchema(IncompleteSchemaError)

The schema still declares some entity types or actions external (RFC 116) rather than defining them.

ActionEntityTypeDeclared(EntityType)

An entity type has the same name as the type of an action.

DuplicateEntityType(EntityType)

Both schemas define the entity type.

DuplicateAction(EntityUID)

Both schemas define the action.

ExternalIsEnum(EntityType)

An external entity type links to an enumerated entity type.

DefinedEntityAncestorsChanged(EntityType)

Linking would add ancestors to a defined entity type.

ExternalActionParentsMismatch(EntityUID)

Two declarations of an action have different parents.

ShadowsBuiltinType(EntityType)

Linking would introduce an entity type that shadows a primitive or extension type.

Schema(SchemaError)

The linked schema is not well formed. Reports the same error that constructing the merged declarations would.

Trait Implementations

impl Debug for LinkError

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

Formats the value using the given formatter.

impl Diagnostic for LinkError

fn code(&self) -> Option<Box<dyn Display + '_>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn help(&self) -> Option<Box<dyn Display + '_>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn related(&self) -> Option<Box<dyn Iterator<Item = &dyn Diagnostic> + '_>>

Additional related Diagnostics.

fn url(&self) -> Option<Box<dyn Display + '_>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl Display for LinkError

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

Formats the value using the given formatter.

impl Error for LinkError

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 From<IncompleteSchemaError> for LinkError

fn from(source: IncompleteSchemaError) -> LinkError

Converts to this type from the input type.

impl From<SchemaError> for LinkError

fn from(source: SchemaError) -> LinkError

Converts to this type from the input type.