refactor: remove the rsx folder
it doesn't seem to be published anywhere or used at all
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7 files changed
-713
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@@ -1,282 +0,0 @@
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use super::*;
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use proc_macro2::TokenStream as TokenStream2;
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use quote::{quote, ToTokens, TokenStreamExt};
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use syn::{
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parse::{Parse, ParseBuffer, ParseStream},
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Expr, Ident, LitStr, Result, Token,
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};
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// =======================================
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// Parse the VNode::Element type
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// =======================================
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pub struct Element {
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pub name: Ident,
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pub key: Option<LitStr>,
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pub attributes: Vec<ElementAttrNamed>,
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pub children: Vec<BodyNode>,
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pub _is_static: bool,
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}
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impl Parse for Element {
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fn parse(stream: ParseStream) -> Result<Self> {
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let el_name = Ident::parse(stream)?;
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// parse the guts
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let content: ParseBuffer;
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syn::braced!(content in stream);
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let mut attributes: Vec<ElementAttrNamed> = vec![];
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let mut children: Vec<BodyNode> = vec![];
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let mut key = None;
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let mut _el_ref = None;
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// parse fields with commas
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// break when we don't get this pattern anymore
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// start parsing bodynodes
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// "def": 456,
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// abc: 123,
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loop {
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// Parse the raw literal fields
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if content.peek(LitStr) && content.peek2(Token![:]) && !content.peek3(Token![:]) {
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let name = content.parse::<LitStr>()?;
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let ident = name.clone();
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content.parse::<Token![:]>()?;
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if content.peek(LitStr) && content.peek2(Token![,]) {
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let value = content.parse::<LitStr>()?;
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attributes.push(ElementAttrNamed {
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el_name: el_name.clone(),
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attr: ElementAttr::CustomAttrText { name, value },
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});
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} else {
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let value = content.parse::<Expr>()?;
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attributes.push(ElementAttrNamed {
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el_name: el_name.clone(),
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attr: ElementAttr::CustomAttrExpression { name, value },
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});
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}
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if content.is_empty() {
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break;
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}
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// todo: add a message saying you need to include commas between fields
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if content.parse::<Token![,]>().is_err() {
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proc_macro_error::emit_error!(
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ident,
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"this attribute is missing a trailing comma"
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)
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}
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continue;
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}
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if content.peek(Ident) && content.peek2(Token![:]) && !content.peek3(Token![:]) {
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let name = content.parse::<Ident>()?;
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let ident = name.clone();
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let name_str = name.to_string();
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content.parse::<Token![:]>()?;
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if name_str.starts_with("on") {
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attributes.push(ElementAttrNamed {
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el_name: el_name.clone(),
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attr: ElementAttr::EventTokens {
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name,
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tokens: content.parse()?,
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},
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});
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} else {
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match name_str.as_str() {
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"key" => {
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key = Some(content.parse()?);
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}
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"classes" => todo!("custom class list not supported yet"),
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// "namespace" => todo!("custom namespace not supported yet"),
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"node_ref" => {
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_el_ref = Some(content.parse::<Expr>()?);
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}
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_ => {
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if content.peek(LitStr) {
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attributes.push(ElementAttrNamed {
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el_name: el_name.clone(),
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attr: ElementAttr::AttrText {
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name,
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value: content.parse()?,
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},
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});
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} else {
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attributes.push(ElementAttrNamed {
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el_name: el_name.clone(),
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attr: ElementAttr::AttrExpression {
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name,
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value: content.parse()?,
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},
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});
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}
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}
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}
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}
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if content.is_empty() {
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break;
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}
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// todo: add a message saying you need to include commas between fields
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if content.parse::<Token![,]>().is_err() {
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proc_macro_error::emit_error!(
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ident,
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"this attribute is missing a trailing comma"
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)
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}
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continue;
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}
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break;
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}
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while !content.is_empty() {
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if (content.peek(LitStr) && content.peek2(Token![:])) && !content.peek3(Token![:]) {
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let ident = content.parse::<LitStr>().unwrap();
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let name = ident.value();
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proc_macro_error::emit_error!(
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ident, "this attribute `{}` is in the wrong place", name;
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help =
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"all attribute fields must be placed above children elements
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div {
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attr: \"...\", <---- attribute is above children
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div { } <---- children are below attributes
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}";
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)
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}
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if (content.peek(Ident) && content.peek2(Token![:])) && !content.peek3(Token![:]) {
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let ident = content.parse::<Ident>().unwrap();
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let name = ident.to_string();
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proc_macro_error::emit_error!(
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ident, "this attribute `{}` is in the wrong place", name;
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help =
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"all attribute fields must be placed above children elements
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div {
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attr: \"...\", <---- attribute is above children
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div { } <---- children are below attributes
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}";
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)
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}
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children.push(content.parse::<BodyNode>()?);
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// consume comma if it exists
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// we don't actually care if there *are* commas after elements/text
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if content.peek(Token![,]) {
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let _ = content.parse::<Token![,]>();
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}
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}
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Ok(Self {
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key,
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name: el_name,
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attributes,
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children,
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_is_static: false,
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})
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}
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}
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impl ToTokens for Element {
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fn to_tokens(&self, tokens: &mut TokenStream2) {
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let name = &self.name;
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let children = &self.children;
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let key = match &self.key {
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Some(ty) => quote! { Some(format_args_f!(#ty)) },
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None => quote! { None },
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};
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let listeners = self
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.attributes
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.iter()
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.filter(|f| matches!(f.attr, ElementAttr::EventTokens { .. }));
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let attr = self
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.attributes
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.iter()
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.filter(|f| !matches!(f.attr, ElementAttr::EventTokens { .. }));
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tokens.append_all(quote! {
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__cx.element(
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dioxus_elements::#name,
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__cx.bump().alloc([ #(#listeners),* ]),
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__cx.bump().alloc([ #(#attr),* ]),
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__cx.bump().alloc([ #(#children),* ]),
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#key,
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)
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});
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}
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}
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pub enum ElementAttr {
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/// attribute: "valuee {}"
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AttrText { name: Ident, value: LitStr },
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/// attribute: true,
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AttrExpression { name: Ident, value: Expr },
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/// "attribute": "value {}"
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CustomAttrText { name: LitStr, value: LitStr },
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/// "attribute": true,
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CustomAttrExpression { name: LitStr, value: Expr },
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// /// onclick: move |_| {}
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// EventClosure { name: Ident, closure: ExprClosure },
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/// onclick: {}
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EventTokens { name: Ident, tokens: Expr },
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}
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pub struct ElementAttrNamed {
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pub el_name: Ident,
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pub attr: ElementAttr,
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}
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impl ToTokens for ElementAttrNamed {
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fn to_tokens(&self, tokens: &mut TokenStream2) {
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let ElementAttrNamed { el_name, attr } = self;
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tokens.append_all(match attr {
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ElementAttr::AttrText { name, value } => {
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quote! {
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dioxus_elements::#el_name.#name(__cx, format_args_f!(#value))
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}
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}
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ElementAttr::AttrExpression { name, value } => {
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quote! {
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dioxus_elements::#el_name.#name(__cx, #value)
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}
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}
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ElementAttr::CustomAttrText { name, value } => {
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quote! {
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__cx.attr( #name, format_args_f!(#value), None, false )
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}
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}
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ElementAttr::CustomAttrExpression { name, value } => {
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quote! {
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__cx.attr( #name, format_args_f!(#value), None, false )
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}
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}
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// ElementAttr::EventClosure { name, closure } => {
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// quote! {
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// dioxus_elements::on::#name(__cx, #closure)
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// }
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// }
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ElementAttr::EventTokens { name, tokens } => {
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quote! {
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dioxus_elements::on::#name(__cx, #tokens)
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}
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}
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});
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}
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}
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