27 lines
835 B
Rust
27 lines
835 B
Rust
use std::error;
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use std::fmt;
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/// The error type for operations interacting with environment variables
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#[derive(Debug, PartialEq)]
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pub enum EnvError {
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/// The specified environment variable was not present in the current process's environment.
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MissingVariable(String),
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/// Failed to parse the specified environment variable.
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FailedToParse(String),
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}
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impl fmt::Display for EnvError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match &self {
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EnvError::MissingVariable(env_name) => {
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write!(f, r#"Environment variable "{}" is missing"#, env_name)
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}
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EnvError::FailedToParse(env_name) => {
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write!(f, r#"Failed to parse environment variable "{}""#, env_name)
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}
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}
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}
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}
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impl error::Error for EnvError {}
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