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pub trait FromTomlReader
where
Self: Sized,
{
/// Convert from toml reader.
///
/// ```should_panic
/// use std::fs::File;
/// use serde::Deserialize;
/// use serde_valid::Validate;
/// use serde_valid::toml::FromTomlReader;
///
/// #[derive(Debug, Validate, Deserialize)]
/// struct TestStruct {
/// #[validate(maximum = 2000)]
/// val: i32,
/// }
///
/// let s = TestStruct::from_toml_reader(File::open("foo.txt").unwrap());
///
/// assert!(s.is_ok())
/// ```
fn from_toml_reader<R>(reader: R) -> Result<Self, crate::Error<serde_toml::de::Error>>
where
R: std::io::Read;
}
impl<T> FromTomlReader for T
where
T: serde::de::DeserializeOwned + crate::Validate,
{
fn from_toml_reader<R>(reader: R) -> Result<Self, crate::Error<serde_toml::de::Error>>
where
R: std::io::Read,
{
use serde::de::Error;
let mut buffer = String::new();
let mut reader = reader;
reader
.read_to_string(&mut buffer)
.map_err(serde_toml::de::Error::custom)?;
let model: T = serde_toml::from_str(&buffer)?;
model.validate().map_err(crate::Error::ValidationError)?;
Ok(model)
}
}