sloc-mcp 1.5.6

MCP stdio server exposing oxide-sloc analysis tools to AI agents
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use serde::{Deserialize, Serialize};
use serde_json::Value;

#[derive(Debug, Deserialize)]
pub struct McpRequest {
    pub id: Value,
    pub method: String,
    pub params: Option<Value>,
}

#[derive(Debug, Serialize)]
pub struct McpResponse {
    pub jsonrpc: &'static str,
    pub id: Value,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub result: Option<Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<McpError>,
}

#[derive(Debug, Serialize)]
pub struct McpError {
    pub code: i32,
    pub message: String,
}

pub const METHOD_NOT_FOUND: i32 = -32601;
pub const INVALID_PARAMS: i32 = -32602;
pub const INTERNAL_ERROR: i32 = -32603;
pub const PARSE_ERROR: i32 = -32700;

impl McpResponse {
    pub fn ok(id: Value, result: Value) -> Self {
        Self {
            jsonrpc: "2.0",
            id,
            result: Some(result),
            error: None,
        }
    }

    pub fn err(id: Value, code: i32, message: impl Into<String>) -> Self {
        Self {
            jsonrpc: "2.0",
            id,
            result: None,
            error: Some(McpError {
                code,
                message: message.into(),
            }),
        }
    }

    pub fn parse_error(e: serde_json::Error) -> Self {
        Self {
            jsonrpc: "2.0",
            id: Value::Null,
            result: None,
            error: Some(McpError {
                code: PARSE_ERROR,
                message: e.to_string(),
            }),
        }
    }
}