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|
// yt - A fully featured command line YouTube client
//
// Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This file is part of Yt.
//
// You should have received a copy of the License along with this program.
// If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
pub(super) const CSI: &str = "\x1b[";
pub(super) const CSE: &str = "m";
macro_rules! elements_inner {
(
$(
$name:ident $_:ident $number:tt
),*
$(,)?
) => {
$(
#[derive(Debug)]
pub struct $name<I: Colorize>(I);
impl<I: Colorize> Colorize for $name<I> {
fn render_into(self, base: &mut String, use_colors: bool) {
elements_inner! {@parse_number $number}
if use_colors {
base.write_str(CSI).expect("In-memory write");
base.write_str(NUMBERS).expect("In-memory write");
base.write_str(CSE).expect("In-memory write");
}
self.0.render_into(base, use_colors);
// The canvas is resetting the colours again.
}
}
)*
};
(@parse_number $single:literal) => {
const NUMBERS: &str = stringify!($single);
};
(@parse_number ($red:literal, $green:literal, $blue:literal)) => {
const NUMBERS_U8: [u8; 18] = $crate::custom::rgb_to_ansi($red, $green, $blue, $crate::custom::Plane::Fg);
const NUMBERS: &str = $crate::custom::bytes_to_str(&NUMBERS_U8);
}
}
pub(super) use elements_inner;
macro_rules! methods_inner {
(
Colorize
$(
$struct_name:ident $fn_name:ident $_:tt
),*
$(,)?
) => {
$(
fn $fn_name(self) -> $struct_name<Self> {
$struct_name(self)
}
)*
};
(
IntoCanvas
$(
$struct_name:ident $fn_name:ident $_:tt
),*
$(,)?
) => {
$(
fn $fn_name(self) -> $struct_name<Canvas<Self>> {
$struct_name(Canvas(self))
}
)*
};
}
pub(super) use methods_inner;
macro_rules! prepend_input {
(
$(
$existing_macro_name:path as $new_macro_name:ident $(($macro_rule:tt -> $macro_apply:tt))?
),*
$(,)?
<shared_input>
$shared_input:tt
) => {
$(
prepend_input! {
@generate_macro
$existing_macro_name as $new_macro_name $(($macro_rule -> $macro_apply))?
<shared_input>
$shared_input
}
)*
};
(
@generate_macro
$existing_macro_name:path as $new_macro_name:ident $((($($macro_rule:tt)*) -> {$($macro_apply:tt)*}))?
<shared_input>
{
$(
$shared_input:tt
)*
}
) => {
macro_rules! $new_macro_name {
($($($macro_rule)*)?) => {
$existing_macro_name! {
$($($macro_apply)*)?
$($shared_input)*
}
}
}
pub(super) use $new_macro_name;
}
}
pub(crate) use prepend_input;
|
