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use std::{collections::HashMap, fmt::Display};
use indexmap::{indexmap, IndexMap};
use crate::JSONValue;
#[derive(Debug, Clone)]
pub struct JSONObject {
data: IndexMap<String, JSONValue>,
}
impl Display for JSONObject {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.to_string())
}
}
impl JSONObject {
/// Create a new empty JSON Object
pub fn new() -> Self {
JSONObject { data: indexmap! {} }
}
/// Convert JSON Object to a Rust owned string
///
/// # Example
///
/// ```
/// use parson::{JSONNumber, JSONObject, JSONString, JSONValue};
///
/// let mut json_object = JSONObject::new();
/// assert_eq!(json_object.to_string(), "{ }");
/// json_object.set("key".to_string(), JSONValue::from_string(JSONString::new("value".to_string())));
/// assert_eq!(json_object.to_string(), "{ \"key\": \"value\" }");
/// json_object.set("number".to_string(), JSONValue::from_number(JSONNumber::new(1.0)));
/// assert_eq!(json_object.to_string(), "{ \"key\": \"value\", \"number\": 1 }");
/// ```
pub fn to_string(&self) -> String {
let mut result = "{ ".to_string();
for (key, value) in self.data.iter() {
result.push_str(&format!("\"{}\": {}, ", key, value.to_string()));
}
if self.data.len() > 0 {
result.pop();
result.pop();
}
result.push_str(" }");
result
}
/// Convert JSON Object to a Rust HashMap
pub fn to_hashmap(&self) -> HashMap<String, JSONValue> {
self.data
.keys()
.map(|k| (k.clone(), self.data[k].clone()))
.collect()
}
/// Get the number of key-value pairs in the JSON Object
pub fn len(&self) -> usize {
self.data.len()
}
/// Get a value by a specific key in the JSON Object
pub fn get(&self, key: &str) -> Option<&JSONValue> {
self.data.get(key)
}
/// Add a key value pair to the JSON Object
pub fn set(&mut self, key: String, value: JSONValue) {
self.data.insert(key, value);
}
}