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use std::error::Error;
use crate::error::{ConfigError, Unexpected};
use crate::map::Map;
use crate::value::{Value, ValueKind};
#[derive(serde::Deserialize, Debug)]
#[serde(untagged)]
pub enum Val {
Null,
Boolean(bool),
Integer(i64),
Float(f64),
String(String),
Array(Vec<Self>),
Object(Map<String, Self>),
}
pub fn parse(
uri: Option<&String>,
text: &str,
) -> Result<Map<String, Value>, Box<dyn Error + Send + Sync>> {
match json5_rs::from_str::<Val>(text)? {
Val::String(ref value) => Err(Unexpected::Str(value.clone())),
Val::Integer(value) => Err(Unexpected::I64(value)),
Val::Float(value) => Err(Unexpected::Float(value)),
Val::Boolean(value) => Err(Unexpected::Bool(value)),
Val::Array(_) => Err(Unexpected::Seq),
Val::Null => Err(Unexpected::Unit),
Val::Object(o) => match from_json5_value(uri, Val::Object(o)).kind {
ValueKind::Table(map) => Ok(map),
_ => Ok(Map::new()),
},
}
.map_err(|err| ConfigError::invalid_root(uri, err))
.map_err(|err| Box::new(err) as Box<dyn Error + Send + Sync>)
}
fn from_json5_value(uri: Option<&String>, value: Val) -> Value {
let vk = match value {
Val::Null => ValueKind::Nil,
Val::String(v) => ValueKind::String(v),
Val::Integer(v) => ValueKind::I64(v),
Val::Float(v) => ValueKind::Float(v),
Val::Boolean(v) => ValueKind::Boolean(v),
Val::Object(table) => {
let m = table
.into_iter()
.map(|(k, v)| (k, from_json5_value(uri, v)))
.collect();
ValueKind::Table(m)
}
Val::Array(array) => {
let l = array
.into_iter()
.map(|v| from_json5_value(uri, v))
.collect();
ValueKind::Array(l)
}
};
Value::new(uri, vk)
}
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