mod error;
mod parser;
pub use parser::*;
extern crate pest;
#[macro_use]
extern crate pest_derive;
use serde::{Serialize, ser};
struct Serializer {
output: String,
indentation: usize,
root: bool,
}
pub fn to_string<T>(value: &T) -> Result<String, error::Err>
where
T: Serialize,
{
let mut serializer = Serializer {
output: String::new(),
indentation: 0,
root: true,
};
value.serialize(&mut serializer)?;
serializer.output.remove(0);
serializer.output.remove(serializer.output.len() - 1);
serializer.output.remove(serializer.output.len() - 1);
Ok(serializer.output)
}
impl<'a> ser::Serializer for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
type SerializeSeq = Self;
type SerializeTuple = Self;
type SerializeTupleStruct = Self;
type SerializeTupleVariant = Self;
type SerializeMap = Self;
type SerializeStruct = Self;
type SerializeStructVariant = Self;
fn serialize_bool(self, v: bool) -> Result<Self::Ok, Self::Error> {
self.output += if v { "true" } else { "false" };
Ok(())
}
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_f32(self, v: f32) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_f64(self, v: f64) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_char(self, v: char) -> Result<Self::Ok, Self::Error> {
self.output += &v.to_string();
Ok(())
}
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
if v.contains(' ') {
self.output += &format!("\"{}\"", v);
} else {
self.output += &v.to_string()
}
Ok(())
}
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
self.output += &format!("{:?}", v);
Ok(())
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
self.output += &"()".to_string();
Ok(())
}
fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
value.serialize(self)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
self.output += &"()".to_string();
Ok(())
}
fn serialize_unit_struct(self, name: &'static str) -> Result<Self::Ok, Self::Error> {
self.output += &format!("{} ()", name);
todo!()
}
fn serialize_unit_variant(
self,
name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
self.serialize_str(&format!("{} {}", name, variant))
}
fn serialize_newtype_struct<T: ?Sized>(
self,
_name: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T: ?Sized>(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
self.output += variant;
self.output += "(";
value.serialize(&mut *self)?;
self.output += ")";
Ok(())
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
self.output += "[";
self.indentation += 1;
Ok(self)
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.output += "[";
todo!()
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
self.output += "{";
self.indentation += 1;
self.output += variant;
self.output += ":[";
Ok(self)
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
if self.root {
self.root = false;
return Ok(self);
}
self.output += "{";
self.indentation += 1;
Ok(self)
}
fn serialize_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.serialize_map(Some(len))
}
fn serialize_struct_variant(
self,
name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
self.output += name;
self.output += " ";
self.output += "{";
self.indentation += 1;
Ok(self)
}
}
impl<'a> ser::SerializeSeq for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
self.indentation -= 1;
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
self.output += "]";
Ok(())
}
}
impl<'a> ser::SerializeTuple for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
if !self.output.ends_with('[') {
self.output += ",";
}
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
self.output += "]";
Ok(())
}
}
impl<'a> ser::SerializeTupleStruct for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
if !self.output.ends_with('[') {
self.output += ",";
}
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
self.output += "]";
Ok(())
}
}
impl<'a> ser::SerializeTupleVariant for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
if !self.output.ends_with('[') {
self.output += ",";
}
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
self.output += "]}";
Ok(())
}
}
impl<'a> ser::SerializeMap for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_key<T>(&mut self, key: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
key.serialize(&mut **self)
}
fn serialize_value<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
self.output += " ";
value.serialize(&mut **self)
}
fn end(self) -> Result<(), Self::Error> {
if self.indentation >= 1 {
self.indentation -= 1;
}
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
self.output += "}";
Ok(())
}
}
impl<'a> ser::SerializeStruct for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
key.serialize(&mut **self)?;
self.output += " ";
value.serialize(&mut **self)?;
Ok(())
}
fn end(self) -> Result<(), Self::Error> {
if self.indentation >= 1 {
self.indentation -= 1;
}
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
self.output += "}";
Ok(())
}
}
impl<'a> ser::SerializeStructVariant for &'a mut Serializer {
type Ok = ();
type Error = error::Err;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
key.serialize(&mut **self)?;
self.output += " ";
value.serialize(&mut **self)?;
Ok(())
}
fn end(self) -> Result<(), Self::Error> {
if self.indentation >= 1 {
self.indentation -= 1;
}
self.output += "\n";
for _ in 0..(self.indentation * 4) {
self.output += " "
}
self.output += "}";
Ok(())
}
}