Enum SchemaError 

pub enum SchemaError {
    Serde(Error),
    ActionTransitiveClosure(Box<TcError<EntityUID>>),
    EntityTypeTransitiveClosure(TcError<Name>),
    UnsupportedFeature(UnsupportedFeature),
    UndeclaredEntityTypes(HashSet<String>),
    UndeclaredActions(HashSet<String>),
    UndeclaredCommonTypes(HashSet<String>),
    DuplicateEntityType(String),
    DuplicateAction(String),
    DuplicateCommonType(String),
    CycleInActionHierarchy(EntityUID),
    CycleInCommonTypeReferences(Name),
    ActionEntityTypeDeclared,
    ContextOrShapeNotRecord(ContextOrShape),
    ActionAttributesContainEmptySet(EntityUID),
    UnsupportedActionAttribute(EntityUID, String),
    ActionAttrEval(EntityAttrEvaluationError),
    ExprEscapeUsed,
}

Variants

Serde(Error)

Error thrown by the serde_json crate during deserialization

ActionTransitiveClosure(Box<TcError<EntityUID>>)

Errors occurring while computing or enforcing transitive closure on action hierarchy.

EntityTypeTransitiveClosure(TcError<Name>)

Errors occurring while computing or enforcing transitive closure on entity type hierarchy.

UnsupportedFeature(UnsupportedFeature)

Error generated when processing a schema file that uses unsupported features

UndeclaredEntityTypes(HashSet<String>)

Undeclared entity type(s) used in the memberOf field of an entity type, the appliesTo fields of an action, or an attribute type in a context or entity attribute record. Entity types in the error message are fully qualified, including any implicit or explicit namespaces.

UndeclaredActions(HashSet<String>)

Undeclared action(s) used in the memberOf field of an action.

UndeclaredCommonTypes(HashSet<String>)

This error occurs in either of the following cases (see discussion on #477): - undeclared common type(s) appearing in entity or context attributes - common type(s) (declared or not) appearing in declarations of other common types

DuplicateEntityType(String)

Duplicate specifications for an entity type. Argument is the name of the duplicate entity type.

DuplicateAction(String)

Duplicate specifications for an action. Argument is the name of the duplicate action.

DuplicateCommonType(String)

Duplicate specification for a reusable type declaration.

CycleInActionHierarchy(EntityUID)

Cycle in the schema’s action hierarchy.

CycleInCommonTypeReferences(Name)

Cycle in the schema’s common type declarations.

ActionEntityTypeDeclared

The schema file included an entity type Action in the entity type list. The Action entity type is always implicitly declared, and it cannot currently have attributes or be in any groups, so there is no purposes in adding an explicit entry.

ContextOrShapeNotRecord(ContextOrShape)

context or shape fields are not records

ActionAttributesContainEmptySet(EntityUID)

An action entity (transitively) has an attribute that is an empty set. The validator cannot assign a type to an empty set. This error variant should only be used when PermitAttributes is enabled.

UnsupportedActionAttribute(EntityUID, String)

An action entity (transitively) has an attribute of unsupported type (ExprEscape, EntityEscape or ExtnEscape). This error variant should only be used when PermitAttributes is enabled.

ActionAttrEval(EntityAttrEvaluationError)

Error when evaluating an action attribute

ExprEscapeUsed

Error thrown when the schema contains the __expr escape. Support for this escape form has been dropped.

Trait Implementations

impl Debug for SchemaError

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

Formats the value using the given formatter.

impl Diagnostic for SchemaError

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 SchemaError

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

Formats the value using the given formatter.

impl Error for SchemaError

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<Error> for SchemaError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<SchemaError> for HumanSchemaError

fn from(source: SchemaError) -> Self

Converts to this type from the input type.

impl From<TcError<EntityUID>> for SchemaError

fn from(e: TcError<EntityUID>) -> Self

Converts to this type from the input type.

impl From<TcError<Name>> for SchemaError

fn from(source: TcError<Name>) -> Self

Converts to this type from the input type.