dwind_macros/lib.rs
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mod codegen;
pub(crate) mod grammar;
mod macro_inputs;
use crate::codegen::string_rendering::class_name_to_struct_identifier;
use crate::codegen::{render_classes, render_generate_dwind_class};
use crate::grammar::{parse_class_string, parse_selector};
use crate::macro_inputs::DwindInputSignal;
use dwind_base::media_queries::Breakpoint;
use macro_inputs::{DwGenerateInput, DwGenerateMapInput, DwindInput};
use proc_macro::TokenStream;
use quote::quote;
/// Use dwind-macros macros on your DOMINATOR component
///
/// Basic usage:
///
/// # Example
/// ```rust,no_run
/// # use dominator::class;
/// # const SOME_CLASS: once_cell::sync::Lazy<String> = once_cell::sync::Lazy::new(|| {class! { .raw("")}});
/// # const SOME_OTHER_CLASS_RAW: once_cell::sync::Lazy<String> = once_cell::sync::Lazy::new(|| {class! { .raw("")}});
/// use dwind_macros::dwclass;
/// dominator::html!("div", {
/// .dwclass!("some_class [>*]:hover:some-other-class")
/// });
/// ```
#[proc_macro]
pub fn dwclass(input: TokenStream) -> TokenStream {
let DwindInput {
self_ident,
classes,
} = syn::parse::<DwindInput>(input).unwrap();
let classes = parse_class_string(classes.value().as_str()).unwrap();
let classes = render_classes(classes);
let (generator_classes, normal_classes): (Vec<_>, Vec<_>) = classes.into_iter().map(|class| {
match class {
(tokens, breakpoint, false) => (None, Some((tokens, breakpoint))),
(tokens, breakpoint, true) => (Some((tokens, breakpoint)), None),
}
}).unzip();
let classes = normal_classes.into_iter().filter_map(|v| v).map(|(class, breakpoint)| {
if let Some(breakpoint) = breakpoint {
let bp = breakpoint.breakpoint;
if breakpoint.is_media_query {
let Breakpoint::MediaQuery(mq) = bp else { unreachable!() };
quote! {
.class_signal(#class, dominator::media_query(#mq))
}
} else {
let bp_value = match bp {
Breakpoint::VerySmall => quote! { dwind::prelude::media_queries::Breakpoint::VerySmall },
Breakpoint::Small => quote! { dwind::prelude::media_queries::Breakpoint::Small },
Breakpoint::Medium => quote! { dwind::prelude::media_queries::Breakpoint::Medium },
Breakpoint::Large => quote! { dwind::prelude::media_queries::Breakpoint::Large },
Breakpoint::VeryLarge => quote! { dwind::prelude::media_queries::Breakpoint::VeryLarge },
_ => { panic!("media query breakpoint not supported here")}
};
if let Some(_modifier) = breakpoint.modifier {
quote! {
.class_signal(#class, dwind::prelude::media_queries::breakpoint_less_than_signal(#bp_value))
}
} else {
quote! {
.class_signal(#class, dwind::prelude::media_queries::breakpoint_active_signal(#bp_value))
}
}
}
} else {
quote! {
.class(#class)
}
}
});
let gen_classes = generator_classes.into_iter().filter_map(|v| v).map(|(class_tokens, breakpoint)| {
if let Some(breakpoint) = breakpoint {
let bp = breakpoint.breakpoint;
let apply = if breakpoint.is_media_query {
let Breakpoint::MediaQuery(mq) = bp else { unreachable!() };
quote! {
.class_signal(&*foobar, dominator::media_query(#mq))
}
} else {
let bp_value = match bp {
Breakpoint::VerySmall => quote! { dwind::prelude::media_queries::Breakpoint::VerySmall },
Breakpoint::Small => quote! { dwind::prelude::media_queries::Breakpoint::Small },
Breakpoint::Medium => quote! { dwind::prelude::media_queries::Breakpoint::Medium },
Breakpoint::Large => quote! { dwind::prelude::media_queries::Breakpoint::Large },
Breakpoint::VeryLarge => quote! { dwind::prelude::media_queries::Breakpoint::VeryLarge },
_ => { panic!("media query breakpoint not supported here")}
};
if let Some(_modifier) = breakpoint.modifier {
quote! {
.class_signal(&*foobar, dwind::prelude::media_queries::breakpoint_less_than_signal(#bp_value))
}
} else {
quote! {
.class_signal(&*foobar, dwind::prelude::media_queries::breakpoint_active_signal(#bp_value))
}
}
};
quote! {
let #self_ident = {
#[doc(hidden)]
pub static foobar: once_cell::sync::Lazy<String> = once_cell::sync::Lazy::new(|| {
#class_tokens
});
#self_ident . #apply
};
}
} else {
quote! {
let #self_ident = {
#[doc(hidden)]
pub static foobar: once_cell::sync::Lazy<String> = once_cell::sync::Lazy::new(|| {
#class_tokens
});
#self_ident . class(&*foobar)
};
}
}
});
quote! {
{
#(#gen_classes)*
#self_ident #(#classes)*
}
}
.into()
}
/// Use dwind-macros macros on your DOMINATOR component
///
/// Basic usage:
///
/// # Example
/// ```rust,no_run
/// # use dominator::class;
/// # use futures_signals::signal::always;
/// # static SOME_CLASS: once_cell::sync::Lazy<String> = once_cell::sync::Lazy::new(|| {class! { .raw("")}});
/// use dwind_macros::{dwclass, dwclass_signal};
/// dominator::html!("div", {
/// .dwclass_signal!("some_class", always(true))
/// });
/// ```
#[proc_macro]
pub fn dwclass_signal(input: TokenStream) -> TokenStream {
let DwindInputSignal {
input: DwindInput {
self_ident,
classes,
},
signal,
} = syn::parse::<DwindInputSignal>(input).unwrap();
let classes = parse_class_string(classes.value().as_str()).unwrap();
let classes = render_classes(classes);
let (generator_classes, normal_classes): (Vec<_>, Vec<_>) = classes.into_iter().map(|class| {
match class {
(tokens, breakpoint, false) => (None, Some((tokens, breakpoint))),
(tokens, breakpoint, true) => (Some((tokens, breakpoint)), None),
}
}).unzip();
let classes = normal_classes.into_iter().filter_map(|v| v).map(|(class, _breakpoint)| {
quote! {
.class_signal(#class, #signal)
}
});
let gen_classes = generator_classes.into_iter().filter_map(|v| v).map(|(class_tokens, _breakpoint)| {
quote! {
let #self_ident = {
#[doc(hidden)]
pub static foobar: once_cell::sync::Lazy<String> = once_cell::sync::Lazy::new(|| {
#class_tokens
});
#self_ident . class_signal(&*foobar, #signal)
};
}
});
quote! {
{
#(#gen_classes)*
#self_ident #(#classes)*
}
}
.into()
}
/// Generates a dwind class that can later be used by the 'dwclass!()' macro.
///
/// Using this will create a lazy static in the scope from which the macro is invoked, so it can be used to create
/// styling modules.
///
///
///
/// # Examples
///
/// ```rust,no_run
/// # use dwind_macros::dwclass;
/// # use dominator::html;
/// mod my_custom_theme {
/// use dwind_macros::dwgenerate;
/// macro_rules! padding_generator {
/// ($padding:tt) => {
/// const_format::formatcp!("padding: {};", $padding)
/// };
/// }
///
/// dwgenerate!("nth-2-padding", "nth-child(2):hover:padding-[20px]");
/// }
///
/// use my_custom_theme::*;
///
/// // Now use the generated pseudoclass on an html element
/// html!("div", {
/// .text("hi there")
/// .dwclass!("nth-2-padding")
/// });
/// ```
#[proc_macro]
pub fn dwgenerate(input: TokenStream) -> TokenStream {
let DwGenerateInput {
class_definition,
class_name,
} = syn::parse(input).unwrap();
let class_definition = parse_selector(class_definition.value().as_str())
.map(|v| v.1)
.unwrap();
let class_name = class_name_to_struct_identifier(&class_name.value());
let rendered = render_generate_dwind_class(class_name, class_definition);
rendered.into()
}
///
/// # Examples
///
/// ```rust,no_run
/// # use dwind_macros::dwgenerate_map;
/// # use dominator::html;
///
/// macro_rules! bg_color_generator {
/// ($color:tt) => {
/// const_format::formatcp!("background-color: {};", $color)
/// };
/// }
///
/// dwgenerate_map!("bg-color-hover", "hover:bg-color-", [
/// ("blue-900", "#aaaafa"),
/// ("blue-800", "#9999da"),
/// ("blue-700", "#8888ca"),
/// ("blue-600", "#7777ba"),
/// ("blue-500", "#6666aa"),
/// ("blue-400", "#55559a"),
/// ("blue-300", "#44448a"),
/// ("blue-200", "#33337a"),
/// ("blue-100", "#22226a"),
/// ("blue-50", "#11115a")
/// ]);
/// ```
#[proc_macro]
pub fn dwgenerate_map(input: TokenStream) -> TokenStream {
let input: DwGenerateMapInput = syn::parse(input).unwrap();
let DwGenerateMapInput {
base_output_ident,
dwind_class_lit,
args,
} = input;
let output = args.tuples.into_iter().map(|input_tuple| {
// create the full name of the new class
let ident_name = class_name_to_struct_identifier(&format!(
"{}-{}",
base_output_ident.value(),
input_tuple.first.value()
));
// create generator dwind string literal
let class_literal = format!(
"{}[{}]",
dwind_class_lit.value(),
input_tuple.second.value()
);
// parse the generator string into a class selector
let class = parse_selector(class_literal.as_str()).unwrap().1;
render_generate_dwind_class(ident_name, class)
});
quote! {
#(#output)*
}
.into()
}