json_macros

[] (https://travis-ci.org/tomjakubowski/json_macros)

Construct JSON objects in Rust from JSON-like literals.

Dependency

Add to your Cargo.toml:

toml [dependencies.json_macros] git = "https://github.com/tomjakubowski/json_macros"

Or, from the registry: ```toml [dependencies]

...

json_macros = "*" ```

You'll also need to link with the rustc-serialize crate, where the Rust JSON types live.

Example

```rust

![feature(phase)]

[phase(plugin)] extern crate json_macros;

extern crate "rustc-serialize" as rustc_serialize;

pub fn main() { let x = 123i32; println!("{}", json!({ // object literal "foo": "foooooo", // string literal keys and values "bar": [true, null, 123, 123.4], // array, boolean, null, numeric literals "quux": { // nest as deeply as you like "a": [1, 2, 3, 4], "b": { "a": null }, "c": false }, "waldo": (192 - x) // wrap in parens to splice ToJson expressions directly }).toprettystr()); } ```

Caveats

• Suffixed and negative numeric literals are currently broken, but can be worked around by wrapping them in (), as in json!({ "a": (-1234i32) }).