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pub use burn_derive::Config;
#[derive(Debug)]
pub enum ConfigError {
InvalidFormat(String),
FileNotFound(String),
}
impl std::fmt::Display for ConfigError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let mut message = "Config error => ".to_string();
match self {
Self::InvalidFormat(err) => {
message += format!("Invalid format: {}", err).as_str();
}
Self::FileNotFound(err) => {
message += format!("File not found: {}", err).as_str();
}
};
f.write_str(message.as_str())
}
}
impl std::error::Error for ConfigError {}
pub trait Config: serde::Serialize + serde::de::DeserializeOwned {
fn save(&self, file: &str) -> std::io::Result<()> {
std::fs::write(file, config_to_json(self))
}
fn load(file: &str) -> Result<Self, ConfigError> {
let content = std::fs::read_to_string(file)
.map_err(|_| ConfigError::FileNotFound(file.to_string()))?;
config_from_str(&content)
}
}
pub fn config_to_json<C: Config>(config: &C) -> String {
serde_json::to_string_pretty(config).unwrap()
}
fn config_from_str<C: Config>(content: &str) -> Result<C, ConfigError> {
serde_json::from_str(content).map_err(|err| ConfigError::InvalidFormat(format!("{}", err)))
}