Attribute Macro error_strategy

#[error_strategy]

The error_strategy attribute macro

This macro transforms a function that returns Result<T, E> into one that returns PipexResult<T, E>, allowing the pipex library to apply the specified error handling strategy. Works with both sync and async functions.

Arguments

• strategy - The error handling strategy type (e.g., IgnoreHandler, CollectHandler)

Examples

use pipex_macros::error_strategy;
 
// Async function
#[error_strategy(IgnoreHandler)]
async fn process_item_async(x: i32) -> Result<i32, String> {
    if x % 2 == 0 {
        Ok(x * 2)
    } else {
        Err("Odd number".to_string())
    }
}
 
// Sync function  
#[error_strategy(CollectHandler)]
fn process_item_sync(x: i32) -> Result<i32, String> {
    if x % 2 == 0 {
        Ok(x * 2)
    } else {
        Err("Odd number".to_string())
    }
}

The generated function will automatically wrap the result in a PipexResult with the specified strategy name, allowing the pipeline to handle errors according to the strategy.