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#![allow(dead_code)]
use std::collections::HashMap;
pub struct Object(HashMap<String, Json>);
pub struct Array(Vec<Json>);
pub enum Json {
Bool(bool),
Object(Object),
Array(Array),
Number(f64),
String(String),
Null
}
pub enum JsonError<'a> {
InvalidTokenErr(&'a str),
ExpectedValueErr(&'a str),
ObjectExpectedValueErr(&'a str),
ObjectInvalidKeyErr(&'a str),
MaxDepthErr(&'a str),
InvalidNumberErr(&'a str),
InvalidStringErr(&'a str),
StringInvalidEscapeErr(&'a str),
StringInvalidUnicodeErr(&'a str),
StringInvalidErr(&'a str),
}
fn skip_ws(raw_json: &str) -> &str {
let non_ws = raw_json.find(|chr: char| !chr.is_whitespace()).unwrap_or(raw_json.len());
&raw_json[non_ws..]
}
impl Json {
pub fn parse(raw_json: &str) -> Result<Json, JsonError> {
todo!()
}
fn parse_value(raw: &str) -> Result<(&str, Json), JsonError> {
let raw = skip_ws(raw);
match raw.chars().next() {
Some('"') => Json::parse_string(raw),
Some('{') => Json::parse_object(raw),
Some('[') => Json::parse_array(raw),
Some(_) => Json::parse_literal(raw),
None => return Err(JsonError::StringInvalidErr(raw))
}
}
fn parse_object(raw: &str) -> Result<(&str, Json), JsonError> {
let mut empty = true;
let raw = skip_ws(raw);
'outer: loop {
for chr in raw.chars() {
}
}
todo!()
}
fn parse_array(raw: &str) -> Result<(&str, Json), JsonError> {
todo!()
}
fn parse_string(raw: &str) -> Result<(&str, Json), JsonError> {
todo!()
}
fn parse_literal(raw: &str) -> Result<(&str, Json), JsonError> {
todo!()
}
}
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