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//! Function implementation for [contra](https://docs.rs/contra)
//!
//! Provides the function and traits needed for the serialization and deserialization of any arbitrary object.
pub mod deserialize;
pub mod error;
pub mod formatter;
pub mod persistent;
pub mod position;
pub mod serialize;
#[cfg(test)]
mod test {
use crate::{
deserialize::{json::FromJson, Deserialize, Visitor},
error::SuccessResult,
position::Position,
serialize::{json::IntoJson, Serialize, Serializer},
};
#[derive(Debug, PartialEq)]
struct PrimitiveDataTypesStruct {
i8: i32,
i16: i16,
i32: i32,
i64: i64,
i128: i128,
u8: u32,
u16: u16,
u32: u32,
u64: u64,
u128: u128,
usize: usize,
isize: isize,
string: String,
f32: f32,
f64: f64,
}
impl PrimitiveDataTypesStruct {
fn new() -> Self {
PrimitiveDataTypesStruct {
i8: 1000,
i16: i16::MAX,
i32: i32::MAX,
i64: i64::MAX,
i128: i128::MAX,
u8: 1000,
u16: u16::MAX,
u32: u32::MAX,
u64: u64::MAX,
u128: u128::MAX,
f32: f32::MAX,
f64: f64::MAX,
usize: usize::MAX,
isize: isize::MAX,
string: "Hello World!".to_string(),
}
}
}
impl Serialize for PrimitiveDataTypesStruct {
fn serialize<S: Serializer>(&self, ser: &mut S, _pos: &Position) -> SuccessResult {
ser.begin_struct("PrimitiveDataTypesStruct", 15)?;
ser.serialize_field("i8", &self.i8, &Position::Trailing)?;
ser.serialize_field("i16", &self.i16, &Position::Trailing)?;
ser.serialize_field("i32", &self.i32, &Position::Trailing)?;
ser.serialize_field("i64", &self.i64, &Position::Trailing)?;
ser.serialize_field("i128", &self.i128, &Position::Trailing)?;
ser.serialize_field("u8", &self.u8, &Position::Trailing)?;
ser.serialize_field("u16", &self.u16, &Position::Trailing)?;
ser.serialize_field("u32", &self.u32, &Position::Trailing)?;
ser.serialize_field("u64", &self.u64, &Position::Trailing)?;
ser.serialize_field("u128", &self.u128, &Position::Trailing)?;
ser.serialize_field("f32", &self.f32, &Position::Trailing)?;
ser.serialize_field("f64", &self.f64, &Position::Trailing)?;
ser.serialize_field("usize", &self.usize, &Position::Trailing)?;
ser.serialize_field("isize", &self.isize, &Position::Trailing)?;
ser.serialize_field("string", &self.string, &Position::Closing)?;
ser.end_struct("PrimitiveDataTypesStruct")?;
Ok(())
}
}
impl Deserialize for PrimitiveDataTypesStruct {
fn deserialize<D: crate::deserialize::Deserializer>(
de: D,
) -> Result<Self, crate::error::AnyError> {
enum Field {
I8,
I16,
I32,
I64,
I128,
U8,
U16,
U32,
U64,
U128,
F32,
F64,
Usize,
Isize,
String,
}
impl Deserialize for Field {
fn deserialize<D: crate::deserialize::Deserializer>(
de: D,
) -> Result<Self, crate::error::AnyError> {
struct FieldVisitor {}
impl Visitor for FieldVisitor {
type Value = Field;
fn expected_a(self) -> String {
"PrimitiveDataTypesStruct field".to_string()
}
fn visit_str(self, v: &str) -> Result<Self::Value, crate::error::AnyError> {
match v {
"i8" => Ok(Field::I8),
"i16" => Ok(Field::I16),
"i32" => Ok(Field::I32),
"i64" => Ok(Field::I64),
"i128" => Ok(Field::I128),
"u8" => Ok(Field::U8),
"u16" => Ok(Field::U16),
"u32" => Ok(Field::U32),
"u64" => Ok(Field::U64),
"u128" => Ok(Field::U128),
"f32" => Ok(Field::F32),
"f64" => Ok(Field::F64),
"usize" => Ok(Field::Usize),
"isize" => Ok(Field::Isize),
"string" => Ok(Field::String),
val => Err(format!("unknown field {}", val).into()),
}
}
}
de.deserialize_str(FieldVisitor {})
}
}
struct PrimitiveDataTypesStructVisitor {}
impl Visitor for PrimitiveDataTypesStructVisitor {
type Value = PrimitiveDataTypesStruct;
fn expected_a(self) -> String {
"PrimitiveDataTypesStruct".to_string()
}
fn visit_map<M: crate::deserialize::MapAccess>(
self,
mut map: M,
) -> Result<Self::Value, crate::error::AnyError> {
let mut i8 = None;
let mut i16 = None;
let mut i32 = None;
let mut i64 = None;
let mut i128 = None;
let mut u8 = None;
let mut u16 = None;
let mut u32 = None;
let mut u64 = None;
let mut u128 = None;
let mut f32 = None;
let mut f64 = None;
let mut usize = None;
let mut isize = None;
let mut string = None;
while let Some(key) = map.next_key()? {
match key {
Field::I8 => {
if i8.is_some() {
return Err("duplicate field i8".into());
}
i8 = Some(map.next_value()?)
}
Field::I16 => {
if i16.is_some() {
return Err("duplicate field i16".into());
}
i16 = Some(map.next_value()?)
}
Field::I32 => {
if i32.is_some() {
return Err("duplicate field i32".into());
}
i32 = Some(map.next_value()?)
}
Field::I64 => {
if i64.is_some() {
return Err("duplicate field i64".into());
}
i64 = Some(map.next_value()?)
}
Field::I128 => {
if i128.is_some() {
return Err("duplicate field i128".into());
}
i128 = Some(map.next_value()?)
}
Field::U8 => {
if u8.is_some() {
return Err("duplicate field u8".into());
}
u8 = Some(map.next_value()?)
}
Field::U16 => {
if u16.is_some() {
return Err("duplicate field u16".into());
}
u16 = Some(map.next_value()?)
}
Field::U32 => {
if u32.is_some() {
return Err("duplicate field u32".into());
}
u32 = Some(map.next_value()?)
}
Field::U64 => {
if u64.is_some() {
return Err("duplicate field u64".into());
}
u64 = Some(map.next_value()?)
}
Field::U128 => {
if u128.is_some() {
return Err("duplicate field u128".into());
}
u128 = Some(map.next_value()?)
}
Field::F32 => {
if f32.is_some() {
return Err("duplicate field f32".into());
}
f32 = Some(map.next_value()?)
}
Field::F64 => {
if f64.is_some() {
return Err("duplicate field f64".into());
}
f64 = Some(map.next_value()?)
}
Field::Usize => {
if usize.is_some() {
return Err("duplicate field usize".into());
}
usize = Some(map.next_value()?)
}
Field::Isize => {
if isize.is_some() {
return Err("duplicate field isize".into());
}
isize = Some(map.next_value()?)
}
Field::String => {
if string.is_some() {
return Err("duplicate field string".into());
}
string = Some(map.next_value()?)
}
}
}
let i8 = i8.ok_or_else(|| "missing field i8")?;
let i16 = i16.ok_or_else(|| "missing field i16")?;
let i32 = i32.ok_or_else(|| "missing field i32")?;
let i64 = i64.ok_or_else(|| "missing field i64")?;
let i128 = i128.ok_or_else(|| "missing field i128")?;
let u8 = u8.ok_or_else(|| "missing field u8")?;
let u16 = u16.ok_or_else(|| "missing field u16")?;
let u32 = u32.ok_or_else(|| "missing field u32")?;
let u64 = u64.ok_or_else(|| "missing field u64")?;
let u128 = u128.ok_or_else(|| "missing field u128")?;
let f32 = f32.ok_or_else(|| "missing field f32")?;
let f64 = f64.ok_or_else(|| "missing field f64")?;
let usize = usize.ok_or_else(|| "missing field usize")?;
let isize = isize.ok_or_else(|| "missing field isize")?;
let string = string.ok_or_else(|| "missing field string")?;
Ok(PrimitiveDataTypesStruct {
i8: i8,
i16: i16,
i32: i32,
i64: i64,
i128: i128,
u8: u8,
u16: u16,
u32: u32,
u64: u64,
u128: u128,
f32: f32,
f64: f64,
usize: usize,
isize: isize,
string: string,
})
}
}
de.deserialize_map(PrimitiveDataTypesStructVisitor {})
}
}
#[test]
fn reconstruction_of_struct_works() {
let obj = PrimitiveDataTypesStruct::new();
let json = IntoJson::to_json(&obj);
dbg!(&json);
assert!(json.is_ok());
let result = FromJson::from_json(&json.unwrap());
dbg!(&result);
assert!(result.is_ok());
assert_eq!(obj, result.unwrap());
}
}