mcpkit_core/error/
context.rs

1//! Context extension trait for error handling.
2//!
3//! This module provides `anyhow`-style context methods while
4//! preserving the typed error system.
5
6use super::types::McpError;
7
8/// Extension trait for adding context to `Result` types.
9///
10/// This provides `anyhow`-style context methods while preserving the
11/// typed error system.
12///
13/// # Example
14///
15/// ```rust
16/// use mcpkit_core::error::{McpError, McpResultExt};
17///
18/// fn process() -> Result<(), McpError> {
19///     let result: Result<(), McpError> = Err(McpError::internal("oops"));
20///     result.context("Failed to process data")?;
21///     Ok(())
22/// }
23/// ```
24pub trait McpResultExt<T> {
25    /// Add context to an error.
26    fn context<C: Into<String>>(self, context: C) -> Result<T, McpError>;
27
28    /// Add context lazily (only evaluated on error).
29    fn with_context<C, F>(self, f: F) -> Result<T, McpError>
30    where
31        C: Into<String>,
32        F: FnOnce() -> C;
33}
34
35impl<T> McpResultExt<T> for Result<T, McpError> {
36    fn context<C: Into<String>>(self, context: C) -> Self {
37        self.map_err(|e| McpError::WithContext {
38            context: context.into(),
39            source: Box::new(e),
40        })
41    }
42
43    fn with_context<C, F>(self, f: F) -> Self
44    where
45        C: Into<String>,
46        F: FnOnce() -> C,
47    {
48        self.map_err(|e| McpError::WithContext {
49            context: f().into(),
50            source: Box::new(e),
51        })
52    }
53}
mcpkit_core/error/context.rs

mcpkit_core/error/
context.rs
