immutable_json/
serde.rs

1use crate::api::Number::{Decimal, Integer};
2use crate::api::{Number, Value};
3use crate::array::Array;
4use crate::object::Object;
5
6/// Convert a serde_json array to an immutable JSON array.
7fn from_array(array: &[serde_json::Value]) -> Array {
8    Array::from_iter(array.iter().filter_map(from_value))
9}
10
11/// Convert a serde_json number to an immutable JSON number.
12fn from_number(value: &serde_json::Number) -> Option<Number> {
13    value
14        .as_i128()
15        .map_or_else(|| value.as_f64().map(Decimal), |i| Some(Integer(i)))
16}
17
18/// Convert a serde_json object to an immutable JSON object.
19fn from_object(object: &serde_json::Map<String, serde_json::Value>) -> Object {
20    Object::from_iter(
21        object
22            .into_iter()
23            .filter_map(|e| from_value(e.1).map(|v| (e.0.clone(), v))),
24    )
25}
26
27/**
28Convert a serde_json value to an immutable JSON value.
29```rust
30# use serde_json::Value;
31# use immutable_json::serde::{from_value, to_value};
32# use serde_json::Error;
33# fn main() -> Result<(), Error>{
34let data = r#"
35        {
36            "string": "string",
37            "int": 43,
38            "float": 5.8,
39            "boolean": true,
40            "object": {"test": "test"},
41            "array": [
42                "string",
43                1,
44                3.0,
45                false,
46                {"test": "test"},
47                [1]
48            ]
49        }"#;
50
51    let v: Value = serde_json::from_str(data)?;
52
53    assert_eq!(Some(v.clone()), from_value(&v).and_then(|f| to_value(&f)));
54#   Ok(())
55# }
56```
57*/
58pub fn from_value(value: &serde_json::Value) -> Option<Value> {
59    match value {
60        serde_json::Value::Array(v) => Some(Value::Array(from_array(v))),
61        serde_json::Value::Bool(v) => Some(Value::Bool(*v)),
62        serde_json::Value::Null => Some(Value::Null),
63        serde_json::Value::Number(v) => from_number(v).map(Value::Number),
64        serde_json::Value::Object(v) => Some(Value::Object(from_object(v))),
65        serde_json::Value::String(v) => Some(Value::String(v.clone())),
66    }
67}
68
69/// Convert an immutable JSON array to a serde_json array.
70fn to_array(array: &Array) -> Vec<serde_json::Value> {
71    Vec::from_iter(array.iter().filter_map(|v| to_value(&v)))
72}
73
74/// Convert an immutable JSON number to a serde_json number.
75fn to_number(value: &Number) -> Option<serde_json::Number> {
76    match value {
77        Decimal(v) => serde_json::Number::from_f64(*v),
78        Integer(v) => serde_json::Number::from_i128(*v),
79    }
80}
81
82/// Convert an immutable JSON object to a serde_json object.
83fn to_object(object: &Object) -> serde_json::Map<String, serde_json::Value> {
84    serde_json::Map::from_iter(
85        object
86            .iter()
87            .filter_map(|e| to_value(&e.1).map(|v| (e.0, v))),
88    )
89}
90
91/// Convert an immutable JSON value to a serde_json value.
92pub fn to_value(value: &Value) -> Option<serde_json::Value> {
93    match value {
94        Value::Array(v) => Some(serde_json::Value::Array(to_array(v))),
95        Value::Bool(v) => Some(serde_json::Value::Bool(*v)),
96        Value::Null => Some(serde_json::Value::Null),
97        Value::Number(v) => to_number(v).map(serde_json::Value::Number),
98        Value::Object(v) => Some(serde_json::Value::Object(to_object(v))),
99        Value::String(v) => Some(serde_json::Value::String(v.clone())),
100    }
101}
immutable_json/serde.rs

immutable_json/
serde.rs
