65 lines
1.6 KiB
Rust
65 lines
1.6 KiB
Rust
//! A storage container for client data
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#[allow(unused_imports)]
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use log::{debug, error, info, trace, warn};
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use quick_error::quick_error;
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quick_error! {
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#[derive(Debug)]
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pub enum CofferError {
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Msg(err: &'static str) {
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from(err)
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display("{}", err)
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}
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Other(err: Box<dyn std::error::Error>) {
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cause(&**err)
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}
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}
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}
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pub type CofferResult<T> = Result<T, CofferError>;
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/// Values supported by a `Coffer`
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#[derive(Clone, Debug)]
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pub enum CofferValue {
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/// A UTF-8 encoded string
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String(String),
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/// A 32-bit integer
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Integer(i32),
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/// An opaque blob of data
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Blob(Vec<u8>)
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}
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/// A path to a value
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#[derive(Clone, Eq, PartialEq, Hash, Debug)]
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pub struct CofferPath(pub Vec<String>);
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/// Interface for interacting with a `Coffer`
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pub trait Coffer {
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/// Put `value` at `path`. Errors if there is already a value at `path`.
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fn put(&mut self, path: CofferPath, value: CofferValue) -> CofferResult<()>;
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/// Push `value` to `path`. Replaces existing values silently.
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fn push(&mut self, path: CofferPath, value: CofferValue);
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/// Retrieve `value` at path. Errors if there is no `value` at path.
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fn get(&self, path: CofferPath) -> CofferResult<CofferValue>;
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}
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impl <T> From<Vec<T>> for CofferPath
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where T: AsRef<str>
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{
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fn from(val: Vec<T>) -> Self {
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CofferPath::from(&val)
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}
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}
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impl <T> From<&Vec<T>> for CofferPath
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where T: AsRef<str>
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{
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fn from(val: &Vec<T>) -> Self {
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let col = val.iter().map(|p| {(*p).as_ref().to_owned()}).collect();
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CofferPath(col)
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}
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}
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