agentix 0.22.1

Multi-provider LLM client for Rust — streaming, non-streaming, tool calls, MCP, DeepSeek, OpenAI, Anthropic, Gemini, Mimo
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use crate::request::ToolCall;
use crate::types::UsageStats;

// ── LLM Provider Events ──────────────────────────────────────────────────────

/// Raw events emitted by an LLM Provider.
///
/// Marked `#[non_exhaustive]` so new variants can be added without breaking
/// downstream matchers — always include a `_ => { /* ignore */ }` arm.
#[derive(Debug, Clone)]
#[non_exhaustive]
pub enum LlmEvent {
    /// A text fragment.
    Token(String),
    /// A reasoning/thinking fragment.
    Reasoning(String),
    /// A tool call fragment emitted during streaming.
    ToolCallChunk(crate::types::ToolCallChunk),
    /// A tool call requested by the model.
    ToolCall(ToolCall),
    /// Opaque provider-specific per-turn state (e.g. Anthropic thinking
    /// blocks with signatures). Emit once before `Done`; downstream consumers
    /// attach it to the reconstructed `Message::Assistant.provider_data`.
    /// Other providers may never emit this.
    AssistantState(serde_json::Value),
    /// Usage statistics (usually sent at the end).
    Usage(UsageStats),
    /// The stream has ended.
    Done,
    /// A provider-level error.
    Error(String),
}