systemprompt-models 0.14.3

Foundation data models for systemprompt.io AI governance infrastructure. Shared DTOs, config, and domain types consumed by every layer of the MCP governance pipeline.
Documentation 
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//! Per-output-item slot state machine the Responses SSE pass tracks.
//!
//! Responses streams reference each output item by `output_index`; this maps
//! those upstream indices to the canonical block index emitted downstream,
//! keyed by the kind of block the slot carries.

pub(super) struct ResponsesStreamState {
    pub(super) buf: Vec<u8>,
    pub(super) model: String,
    pub(super) response_id: String,
    pub(super) started: bool,
    pub(super) items: Vec<ItemSlot>,
}

pub(super) struct ItemSlot {
    pub(super) output_index: i64,
    pub(super) canonical_index: u32,
    pub(super) kind: SlotKind,
}

pub(super) enum SlotKind {
    Message,
    Function,
    Reasoning,
}

#[derive(Clone, Copy, PartialEq, Eq)]
pub(super) enum SlotKindMatch {
    Message,
    Function,
    Reasoning,
}

pub(super) fn lookup_canonical(
    items: &[ItemSlot],
    output_index: i64,
    want: SlotKindMatch,
) -> Option<u32> {
    items.iter().find_map(|s| {
        let kind_match = matches!(
            (&s.kind, want),
            (SlotKind::Message, SlotKindMatch::Message)
                | (SlotKind::Function, SlotKindMatch::Function)
                | (SlotKind::Reasoning, SlotKindMatch::Reasoning)
        );
        (s.output_index == output_index && kind_match).then_some(s.canonical_index)
    })
}