command_engine/shared/
error.rs

1use std::fmt::{Display, Formatter};
2
3#[derive(Debug)]
4pub enum Error {
5    /// Instruction deserializer couldn't find Command caller in the input.
6    ///
7    /// Examples: <br>
8    /// - `input = ""`
9    /// - `input = "--o_arg"`
10    /// - `input = "--o_arg caller"`
11    InstructionMissingCaller,
12
13    /// Instruction deserializer received input that had SubArg before OArg
14    ///
15    /// (this shouldn't happen).
16    InstructionSubArgWithoutOArg,
17
18    /// Engine couldn't find a suitable Command for the received caller.
19    ///
20    /// Example:
21    /// ```pseudo
22    /// Engine = {
23    ///     commands: ["echo", "dir", "ls"]
24    /// };
25    ///
26    /// Engine.execute("cd ..");  // Error(EngineCommandNotFound)
27    /// ```
28    EngineCommandNotFound,
29}
30
31impl Display for Error {
32    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
33        write!(f, "{:?}", self)
34    }
35}
36
37impl std::error::Error for Error {}
command_engine/shared/error.rs

command_engine/shared/
error.rs
