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use super::{Deserialized, DeserializedIr, Serialized};
use serde::de::DeserializeOwned;
use serde::Serialize;
use serde_json::{self, Value as Json};
use std::str::{from_utf8, from_utf8_unchecked};
use value::convert::{ConvIr, FromValue, FromValueError};
use value::Value;
impl From<Json> for Value {
fn from(x: Json) -> Value {
Value::Bytes(serde_json::to_string(&x).unwrap().into())
}
}
impl<T: Serialize> From<Serialized<T>> for Value {
fn from(x: Serialized<T>) -> Value {
Value::Bytes(serde_json::to_string(&x.0).unwrap().into())
}
}
impl<T: DeserializeOwned> ConvIr<Deserialized<T>> for DeserializedIr<T> {
fn new(v: Value) -> Result<DeserializedIr<T>, FromValueError> {
let (output, bytes) = {
let bytes = match v {
Value::Bytes(bytes) => match from_utf8(&*bytes) {
Ok(_) => bytes,
Err(_) => return Err(FromValueError(Value::Bytes(bytes))),
},
v => return Err(FromValueError(v)),
};
let output = {
match serde_json::from_str(unsafe { from_utf8_unchecked(&*bytes) }) {
Ok(output) => output,
Err(_) => return Err(FromValueError(Value::Bytes(bytes))),
}
};
(output, bytes)
};
Ok(DeserializedIr {
bytes: bytes,
output: Deserialized(output),
})
}
fn commit(self) -> Deserialized<T> {
self.output
}
fn rollback(self) -> Value {
Value::Bytes(self.bytes)
}
}
impl<T: DeserializeOwned> FromValue for Deserialized<T> {
type Intermediate = DeserializedIr<T>;
}
#[derive(Debug)]
pub struct JsonIr {
bytes: Vec<u8>,
output: Json,
}
impl ConvIr<Json> for JsonIr {
fn new(v: Value) -> Result<JsonIr, FromValueError> {
let (output, bytes) = {
let bytes = match v {
Value::Bytes(bytes) => match from_utf8(&*bytes) {
Ok(_) => bytes,
Err(_) => return Err(FromValueError(Value::Bytes(bytes))),
},
v => return Err(FromValueError(v)),
};
let output = {
match serde_json::from_str(unsafe { from_utf8_unchecked(&*bytes) }) {
Ok(output) => output,
Err(_) => return Err(FromValueError(Value::Bytes(bytes))),
}
};
(output, bytes)
};
Ok(JsonIr {
bytes: bytes,
output: output,
})
}
fn commit(self) -> Json {
self.output
}
fn rollback(self) -> Value {
Value::Bytes(self.bytes)
}
}
impl FromValue for Json {
type Intermediate = JsonIr;
}