Macro primitive 

macro_rules! primitive {
    ($matcher:expr) => { ... };
}

Matches a JSON value (string, number, or boolean) against the given matcher.

This macro enables matching specific primitive values inside a JSON structure by delegating to a matcher for the corresponding Rust type. It supports:

• String values (e.g. json::primitive!(eq("hello")))
• Number values as i64 or f64 (e.g. json::primitive!(ge(0)))
• Boolean values (e.g. json::primitive!(eq(true)))

Fails if the value is not of the expected JSON type.

Example

let data = j!({"active": true, "count": 3});

verify_that!(data["active"], json::primitive!(eq(true)));
verify_that!(data["count"], json::primitive!(ge(0)));