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