Crate ailoop_context 

This crate has been renamed to ailoop-history.

All items are re-exported here with a #[deprecated] notice so existing code keeps compiling while you migrate. The previous ContextManager / ContextManagerBuilder types were renamed to History / HistoryBuilder at the same time — see the ailoop-history crate for details and migration guidance.

Modules

compaction

CompactionStrategy trait and the two built-in implementations. See TruncateStrategy (drop the prefix) and SummarizeStrategy (replace the prefix with a model-generated summary).

errors

Failure surfaces of compaction and snapshot validation.

history

History + HistoryBuilder + the report type compact_if_needed returns.

history_store

HistoryStore trait + InMemoryHistoryStore / JsonFileHistoryStore backends.

snapshot

ConversationSnapshot — versioned wire format used by HistoryStore backends.

Structs

CharTokenizer

Fallback Tokenizer that approximates tokens as text.len() / 4.

CompactionOutput

Result of a successful CompactionStrategy::compact call.

CompactionReport

Reports what History::compact_if_needed did when it ran. Returned wrapped in Option: None means compaction was not needed (history fits within max_tokens).

ConversationSnapshot

Persistable image of a conversation’s logical state.

History

Owns the message vector backing a single conversation, plus the budget and pin mask that govern how compaction reduces it.

HistoryBuilder

Configuration for a History.

InMemoryHistoryStore

Volatile HistoryStore kept entirely in process memory. Intended for tests and short-lived sessions where durable persistence is not required.

JsonFileHistoryStore

JSON-backed HistoryStore that writes the full snapshot to a single file. save pretty-prints; load returns Ok(None) when the file does not exist (first run) so callers can seed an empty conversation without branching on the missing-file case.

SummarizeStrategy

Compaction strategy that calls a CompletionModel to summarize the dropped portion of the history into a single text message, instead of dropping it outright.

TruncateStrategy

Default CompactionStrategy: drop the oldest unpinned messages until the preserved tail starts at a safe User-without- ToolResult boundary. Pinned messages from the dropped prefix survive verbatim at their relative position; the cut never strands a ToolResult from its ToolCall. Reports under CompactionStrategy::name as "truncate".

Enums

CompactionError

Failure surface of CompactionStrategy::compact (and therefore of History::compact_if_needed).

FromMessagesError

Returned by ConversationSnapshot::new and History::from_messages when the supplied parallel vectors are inconsistent. Surfaces at restore time so a malformed snapshot fails loudly instead of corrupting state silently.

JsonFileHistoryStoreError

HistoryStore::Error variant for JsonFileHistoryStore.

Constants

DEFAULT_SUMMARIZER_PROMPT

Default system prompt used by SummarizeStrategy when the caller does not supply one. Kept terse to leave room for the actual transcript inside max_tokens.

Traits

CompactionStrategy

User-implementable strategy for shrinking a History’s history when History::compact_if_needed runs.

HistoryStore

Persistence backend for conversation snapshots.

Tokenizer

Counts tokens in text and full messages.