cargo-mcp

use crate::state::CargoTools; use crate::tools::cargo_utils::{create_cargo_command, execute_cargo_command}; use anyhow::Result; use mcplease::{ traits::{Tool, WithExamples}, types::Example, }; use serde::{Deserialize, Serialize}; use std::collections::HashMap; /// Check if code is properly formatted without modifying files #[derive(Debug, Serialize, Deserialize, schemars::JsonSchema, clap::Args)] #[serde(rename = "cargo_fmt_check")] pub struct CargoFmtCheck { /// Optional Rust toolchain to use (e.g., 'stable', 'nightly', '1.70.0') #[serde(skip_serializing_if = "Option::is_none")] #[arg(long)] pub toolchain: Option<String>, /// Optional environment variables to set for the cargo command #[serde(skip_serializing_if = "Option::is_none")] #[arg(skip)] pub cargo_env: Option<HashMap<String, String>>, } impl WithExamples for CargoFmtCheck { fn examples() -> Vec<Example<Self>> { vec![ Example { description: "Check formatting in current project", item: Self { toolchain: None, cargo_env: None, }, }, Example { description: "Check formatting with nightly toolchain", item: Self { toolchain: Some("nightly".into()), cargo_env: None, }, }, ] } } impl Tool<CargoTools> for CargoFmtCheck { fn execute(self, state: &mut CargoTools) -> Result<String> { let project_path = state.ensure_rust_project(None)?; // Use toolchain from args, session default, or none let toolchain = self.toolchain .or_else(|| state.get_default_toolchain(None).unwrap_or(None)); let args = vec!["fmt", "--check"]; let cmd = create_cargo_command(&args, toolchain.as_deref(), self.cargo_env.as_ref()); execute_cargo_command(cmd, &project_path, "cargo fmt --check") } }