46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
//! Example using Repl with a custom error type.
|
|
|
|
use reedline_repl_rs::clap::{ArgMatches, Command};
|
|
use reedline_repl_rs::Repl;
|
|
use std::fmt;
|
|
|
|
#[derive(Debug)]
|
|
enum CustomError {
|
|
ReplError(reedline_repl_rs::Error),
|
|
StringError(String),
|
|
}
|
|
|
|
impl From<reedline_repl_rs::Error> for CustomError {
|
|
fn from(e: reedline_repl_rs::Error) -> Self {
|
|
CustomError::ReplError(e)
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for CustomError {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
match self {
|
|
CustomError::ReplError(e) => write!(f, "REPL Error: {}", e),
|
|
CustomError::StringError(s) => write!(f, "String Error: {}", s),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl std::error::Error for CustomError {}
|
|
|
|
/// Do nothing, unsuccesfully
|
|
fn hello<T>(_args: ArgMatches, _context: &mut T) -> Result<Option<String>, CustomError> {
|
|
Err(CustomError::StringError("Returning an error".to_string()))
|
|
}
|
|
|
|
fn main() -> Result<(), reedline_repl_rs::Error> {
|
|
let mut repl = Repl::new(())
|
|
.with_name("MyApp")
|
|
.with_version("v0.1.0")
|
|
.with_description("My very cool app")
|
|
.with_command(
|
|
Command::new("hello").about("Do nothing, unsuccessfully"),
|
|
hello,
|
|
);
|
|
repl.run()
|
|
}
|