pub trait ParseObjectKey<'doc>:
Sized
+ Eq
+ Hash
+ Ord {
// Required methods
fn from_object_key(key: &'doc ObjectKey) -> Result<Self, ParseErrorKind>;
fn from_extension_ident(ident: &Identifier) -> Result<Self, ParseErrorKind>;
}Expand description
Trait for types that can be used as object keys when parsing from Eure documents.
This trait abstracts over key types that can be used in Map<K, V>, supporting
owned (ObjectKey), borrowed (&'doc ObjectKey), and primitive types (bool,
BigInt, String) for type-constrained maps.
§Lifetime Parameter
The 'doc lifetime ties the parsed key to the document’s lifetime, allowing
zero-copy parsing for reference types.
§Type Constraints
Implementors must satisfy:
Eq + Hashfor use withAHashMap(std feature)Ordfor use withBTreeMap(no_std)
§Examples
use eure_document::{EureDocument, Map, ObjectKey, FromEure};
// Parse map with borrowed keys (zero-copy)
let map: Map<&ObjectKey, String> = doc.parse(root_id)?;
// Parse map with owned keys
let map: Map<ObjectKey, String> = doc.parse(root_id)?;
// Parse map with type-constrained keys
let map: Map<String, i32> = doc.parse(root_id)?;Required Methods§
Sourcefn from_object_key(key: &'doc ObjectKey) -> Result<Self, ParseErrorKind>
fn from_object_key(key: &'doc ObjectKey) -> Result<Self, ParseErrorKind>
Parse an object key from the given ObjectKey reference in the document.
§Arguments
key- Reference to the ObjectKey in the document’s NodeMap
§Returns
Returns Self on success, or ParseErrorKind if the key cannot be
converted to the target type (e.g., trying to parse a Bool as String).
§Errors
Returns ParseErrorKind::TypeMismatch when the ObjectKey variant doesn’t
match the expected type.
Sourcefn from_extension_ident(ident: &Identifier) -> Result<Self, ParseErrorKind>
fn from_extension_ident(ident: &Identifier) -> Result<Self, ParseErrorKind>
Parse a key from an extension identifier.
Extension keys are always string identifiers. This method converts them
to the target key type. This is separate from from_object_key because
extension identifiers don’t have 'doc lifetime (they’re not ObjectKeys
stored in the document’s NodeMap).
§Errors
Returns ParseErrorKind::TypeMismatch if the target type cannot be
constructed from an identifier (e.g., borrowed &ObjectKey or numeric keys).
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety".