Module value

Structs§

StructLayout: Indexed runtime layout for a Harn struct instance.
VmAtomicHandle: An atomic integer handle for the VM.
VmChannelHandle: A channel handle for the VM (uses tokio mpsc).
VmClosure: A compiled closure value.
VmEnv: VM environment for variable storage.
VmGenerator: A generator object: lazily produces values via yield. The generator body runs as a spawned task that sends values through a channel.
VmRange: A lazy integer range — Python-style. Stores only (start, end, inclusive) so the in-memory footprint is O(1) regardless of the range’s length. len(), indexing (r[k]), .contains(x), .first(), .last() are all O(1); direct iteration walks step-by-step without materializing a list.
VmSyncPermitHandle: A held synchronization permit for mutex/semaphore/gate primitives.
VmTaskHandle: A spawned async task handle with cancellation support.

ErrorCategory: Error categories for structured error handling in agent orchestration.
VmError
VmValue: VM runtime value.

categorized_error: Create a categorized error conveniently.
classify_error_message: Classify an error message using HTTP status codes and well-known patterns. Prefers unambiguous signals (status codes) over substring heuristics.
closest_match: Find the closest match from a list of candidates using Levenshtein distance. Returns Some(suggestion) if a candidate is within max_dist edits.
compare_values
error_to_category: Extract error category from a VmError.
struct_fields_to_map
value_identity_key: Stable identity key for a value. Different allocations produce different keys; two values with the same heap identity produce the same key. For primitives the key is derived from the displayed value plus type name so logically-equal primitives always compare equal.
value_structural_hash_key: Canonical string form used as the keying material for hash_value. Different types never collide (the type name is prepended) and collection order is preserved so structurally-equal values always produce the same key. Not intended for cross-process stability; depends on the in-process iteration order for collections (Dict uses BTreeMap so keys are sorted).
values_equal
values_identical: Reference / identity equality. For heap-allocated refcounted values (List/Dict/Set/Closure) returns true only when both operands share the same underlying Rc allocation. For primitive scalars, falls back to structural equality (since primitives have no distinct identity).