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use serde::{Deserialize, Serialize};
#[derive(Debug, Serialize, Deserialize)]
struct Specification {
benchmarks: Vec<Benchmark>,
}
#[derive(Debug, Serialize, Deserialize)]
struct Benchmark {
benchmark: String,
backups: Vec<Backup>,
}
#[derive(Debug, Serialize, Deserialize)]
struct Backup {
changes: Vec<Change>,
}
#[derive(Debug, Serialize, Deserialize)]
enum Change {
Create(CreateFiles),
Delete(FileCount),
Rename(FileCount),
}
#[derive(Debug, Serialize, Deserialize)]
struct CreateFiles {
files: u64,
#[serde(with = "file_size")]
file_size: u64,
}
#[derive(Debug, Serialize, Deserialize)]
struct FileCount {
files: u64,
}
fn main() {
let yaml = r#"
benchmarks:
- benchmark: foo
backups: []
"#;
let spec: Specification = serde_yaml::from_str(yaml).unwrap();
serde_json::to_writer(std::io::stdout(), &spec).unwrap();
println!();
}
mod file_size {
use serde::{de::Error as _, Deserialize, Deserializer, Serialize, Serializer};
// This deserializer was originally written with u64 in mind. Then it was made generic by
// changing u64 to T everywhere and adding boundaries. Same with the serializer.
pub fn deserialize<'de, D, T>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
T: std::str::FromStr,
<T as std::str::FromStr>::Err: std::fmt::Display,
{
String::deserialize(deserializer)?
.parse::<T>()
.map_err(|e| D::Error::custom(format!("{}", e)))
}
pub fn serialize<S, T>(value: &T, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
T: std::fmt::Display,
{
format!("{}", value).serialize(serializer)
}
}
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