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//! Derives traits from the [palette](https://crates.io/crates/palette) crate.

#![cfg_attr(feature = "strict", deny(warnings))]
#![recursion_limit = "128"]

extern crate proc_macro;
extern crate proc_macro2;
#[macro_use]
extern crate quote;
extern crate syn;

use proc_macro::TokenStream;

mod util;
mod meta;
mod convert;
mod encoding;

const COLOR_TYPES: &[&str] = &[
    "Rgb", "Luma", "Hsl", "Hsv", "Hwb", "Lab", "Lch", "Xyz", "Yxy"
];

#[proc_macro_derive(FromColor,
                    attributes(palette_internal, palette_white_point, palette_component,
                               palette_manual_from, palette_rgb_space, palette_alpha))]
pub fn derive_from_color(tokens: TokenStream) -> TokenStream {
    convert::derive_from_color(tokens)
}

#[proc_macro_derive(IntoColor,
                    attributes(palette_internal, palette_white_point, palette_component,
                               palette_manual_into, palette_rgb_space, palette_alpha))]
pub fn derive_into_color(tokens: TokenStream) -> TokenStream {
    convert::derive_into_color(tokens)
}

#[proc_macro_derive(Pixel,
                    attributes(palette_internal, palette_unsafe_same_layout_as,
                               palette_unsafe_zero_sized))]
pub fn derive_pixel(tokens: TokenStream) -> TokenStream {
    encoding::derive_pixel(tokens)
}