@sema-agent/core/dist/core/runner/session-read-file-states.js

Stateless, task-oriented AI agent core

export class SessionReadFileStates {
    seats = new Map();
    static CAP = 1024;
    get(sessionId) {
        const seat = this.seats.get(sessionId);
        if (seat !== undefined) {
            this.seats.delete(sessionId);
            this.seats.set(sessionId, seat);
        }
        return seat;
    }
    adopt(sessionId, state, anchorLeafId) {
        this.seats.delete(sessionId);
        this.seats.set(sessionId, { state, anchorLeafId });
        while (this.seats.size > SessionReadFileStates.CAP) {
            const oldest = this.seats.keys().next().value;
            if (oldest === undefined)
                break;
            this.seats.delete(oldest);
        }
    }
    reanchor(sessionId, state, anchorLeafId) {
        const seat = this.seats.get(sessionId);
        if (seat !== undefined && seat.state === state)
            seat.anchorLeafId = anchorLeafId;
    }
}
export async function sessionSeatAnchorHolds(getEntry, anchorLeafId, currentLeafId) {
    if (anchorLeafId === null)
        return false;
    let id = currentLeafId;
    for (let steps = 0; id !== null && steps < 100_000; steps++) {
        if (id === anchorLeafId)
            return true;
        const entry = await getEntry(id);
        if (entry === null || entry === undefined)
            return false;
        if (entry.type === "compaction")
            return false;
        id = entry.parentId;
    }
    return false;
}