aacode-rs 1.8.13

Rust port of the AACode ReAct coding agent, built on fastshell for mobile AI agents
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

// Copyright (c) 2026 xiefujin <490021684@qq.com>
// Licensed under GPL-3.0, see LICENSE file for full license terms.

//! Shared LLM types: chat messages, tool calls, response envelope.

use serde::{Deserialize, Serialize};
use serde_json::Value;

/// One conversation message. Mirrors the OpenAI chat message shape plus the
/// optional `reasoning_content` used by DeepSeek/Kimi thinking models.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ChatMessage {
    pub role: String, // system | user | assistant | tool
    #[serde(default)]
    pub content: String,
    #[serde(skip_serializing_if = "Option::is_none", default)]
    pub tool_calls: Option<Vec<ToolCall>>,
    #[serde(skip_serializing_if = "Option::is_none", default)]
    pub tool_call_id: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none", default)]
    pub reasoning_content: Option<String>,
}

impl ChatMessage {
    pub fn system(content: impl Into<String>) -> Self {
        Self::simple("system", content)
    }
    pub fn user(content: impl Into<String>) -> Self {
        Self::simple("user", content)
    }
    pub fn assistant(content: impl Into<String>) -> Self {
        Self::simple("assistant", content)
    }
    pub fn simple(role: &str, content: impl Into<String>) -> Self {
        ChatMessage {
            role: role.to_string(),
            content: content.into(),
            tool_calls: None,
            tool_call_id: None,
            reasoning_content: None,
        }
    }
    /// A tool result message answering a specific tool_call id.
    pub fn tool_result(tool_call_id: impl Into<String>, content: impl Into<String>) -> Self {
        ChatMessage {
            role: "tool".to_string(),
            content: content.into(),
            tool_calls: None,
            tool_call_id: Some(tool_call_id.into()),
            reasoning_content: None,
        }
    }
    /// An assistant message that carries tool_calls.
    pub fn assistant_with_tools(content: impl Into<String>, tool_calls: Vec<ToolCall>) -> Self {
        ChatMessage {
            role: "assistant".to_string(),
            content: content.into(),
            tool_calls: Some(tool_calls),
            tool_call_id: None,
            reasoning_content: None,
        }
    }
}

/// A single tool/function call requested by the model.
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub struct ToolCall {
    pub id: String,
    pub name: String,
    /// Raw JSON arguments string (as returned by the API). Parse before use.
    pub arguments: String,
}

impl ToolCall {
    /// Parse the arguments string into a JSON value. Returns an empty object
    /// on parse failure (mirrors the Python fallback of `{}`).
    pub fn parsed_args(&self) -> Value {
        serde_json::from_str(&self.arguments).unwrap_or_else(|_| serde_json::json!({}))
    }
}

/// The result of one streamed model call.
#[derive(Debug, Clone, Default)]
pub struct LlmResponse {
    pub text: String,
    pub tool_calls: Vec<ToolCall>,
    pub reasoning_content: Option<String>,
    /// "length"/"max_tokens" indicates truncation.
    pub finish_reason: Option<String>,
}

impl LlmResponse {
    pub fn is_truncated(&self) -> bool {
        matches!(
            self.finish_reason.as_deref(),
            Some("length") | Some("max_tokens") | Some("connection_closed")
        )
    }
}