`6ca3e00a2ff9`

1 file changed

modifiedcrates/nixlike/src/lib.rsdiff before after both
1use std::collections::BTreeMap;23use peg::str::LineCol;4use se_impl::MySerialize;5use serde::{Deserialize, Serialize};67mod de_impl;8mod se_impl;9mod to_string;1011#[derive(thiserror::Error, Debug)]12pub enum Error {13	#[error("bad number")]14	BadNumber,15	#[error("expected {0}")]16	Expected(&'static str),17	#[error("parse error")]18	ParseError(#[from] peg::error::ParseError<LineCol>),19	#[error("{0}")]20	Custom(String),21	#[error("io: {0}")]22	Io(#[from] std::io::Error),23	#[error("fmt: {0}")]24	Fmt(#[from] std::fmt::Error),25}2627#[derive(Debug)]28pub enum Value {29	Number(i64),30	String(String),31	Boolean(bool),32	Object(BTreeMap<String, Value>),33	Array(Vec<Value>),34	Null,35}3637peg::parser! {38pub grammar nixlike() for str {39	rule number() -> i6440		= v:$(['0'..='9' | '+' | '-']+) {? v.parse().map_err(|_| "<number>")}41	rule string() -> String42		= "\"" v:$((!"\"" [_])+) "\"" { v.to_owned() }43	rule boolean() -> bool44		= "true" {true}45		/ "false" {false}46	rule indent() -> String47		= s:$(['a'..='z' | 'A'..='Z' | '0'..='9' | '_' | '-']+) { s.to_owned() }48	rule object() -> BTreeMap<String, Value>49		= "{" _50			e:(k:indent()++(_ "." _) _ "=" _ v:value() _ ";" _ {(k, v)})*51		"}" {?52			let mut out = BTreeMap::new();53			for (k, v) in e {54				let mut map = &mut out;55				for v in k.iter().take(k.len() - 1) {56					map = match map.entry(v.clone()).or_insert_with(|| Value::Object(Default::default())) {57						Value::Object(v) => v,58						_ => return Err("expected object"),59					}60				}6162				let key = k.into_iter().last().unwrap();63				if map.contains_key(&key) {64					return Err("can't override object");65				}66				map.insert(key, v);67			}68			Ok(out)69		}7071	rule array() -> Vec<Value>72		= "[" _ v:value()**_ _ "]" {v}7374	rule value() -> Value75		= o:object() { Value::Object(o) }76		/ a:array() { Value::Array(a) }77		/ s:string() { Value::String(s) }78		/ b:boolean() { Value::Boolean(b) }79		/ n:number() { Value::Number(n) }8081	pub rule root() -> Value82		= _ v:value() _ { v }8384	rule _()85		= ( quiet!{ [' ' | '\t' | '\n']+ }86		/ "#" (!['\n'] [_])* "\n" )*87}88}8990pub fn parse_str<'de, D: Deserialize<'de>>(s: &str) -> Result<D, Error> {91	let value = nixlike::root(s)?;92	D::deserialize(value)93}9495pub fn parse_value<'de, D: Deserialize<'de>>(value: Value) -> Result<D, Error> {96	D::deserialize(value)97}9899pub fn serialize_value_pretty(value: Value) -> Result<String, Error> {100	to_string::write_nix(&value)101}102103pub fn serialize<S: Serialize>(value: S) -> Result<String, Error> {104	let value: Value = value.serialize(MySerialize)?;105	serialize_value_pretty(value)106}107108#[test]109fn test() {110	let v: serde_json::Value = parse_str(111		r#"112			{113				b.c = 2;114				b.d = "hello";115				c = {116					k = 123;117					p = 231;118					ll = [1 2 3 [] [[4 5 6]] ];119				};120			}121		"#,122	)123	.unwrap();124	let s: String = serialize(v).unwrap();125	println!("{}", s);126}