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Fixes to the way Render handles attributes #45

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Fixes to the way Render handles attributes #45

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6a105fe
Fix
theashguy May 24, 2020
5320327
Added a bit of documentation
theashguy May 24, 2020
9bcd0b2
fixed terminology (elements > fields)
theashguy May 24, 2020
d159b2a
Added failing test for the element ordering
theashguy May 24, 2020
1d5f88a
Fixed ordering of lists of things
theashguy May 24, 2020
23727c0
Merged origin branch
theashguy Aug 9, 2020
5de20c1
Added ability to have weird attribute names (eg, svg or alpine.js)
May 26, 2021
3d25bff
Moved sized to render method
May 29, 2021
71710fc
Added ability to clone components
Aug 18, 2021
5fb990b
Fixed cloning various types
Aug 18, 2021
12bf67b
Added From<String> to Raw
theashguy Jun 19, 2022
34733c8
feat: Added the ability to flag an attribute as boolean
theashguy Mar 23, 2023
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2 changes: 1 addition & 1 deletion render/src/simple_element.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ fn write_attributes<'a, W: Write>(maybe_attributes: Attributes<'a>, writer: &mut
Some(mut attributes) => {
for (key, value) in attributes.drain() {
write!(writer, " {}=\"", key)?;
escape_html(&value, writer)?;
write!(writer, "{}", value)?;
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@theashguy theashguy May 27, 2021

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Here we stop escaping the html of data that goes into attributes. This does mean library users will need to do this themselves. In future I'd suggest some kind of marker that would escape this unless it was attached.

write!(writer, "\"")?;
}
Ok(())
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1 change: 0 additions & 1 deletion render_macros/src/children.rs
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Expand Up @@ -30,7 +30,6 @@ impl Children {
1 => quote! { Some(#(#children_quotes),*) },
_ => {
let mut iter = children_quotes.iter();

let first = iter.next().unwrap();
let second = iter.next().unwrap();

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33 changes: 30 additions & 3 deletions render_macros/src/element_attribute.rs
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Expand Up @@ -4,7 +4,7 @@ use syn::ext::IdentExt;
use syn::parse::{Parse, ParseStream, Result};
use syn::spanned::Spanned;

pub type AttributeKey = syn::punctuated::Punctuated<syn::Ident, syn::Token![-]>;
pub type AttributeKey = syn::punctuated::Punctuated<proc_macro2::Ident, proc_macro2::Punct>;

pub enum ElementAttribute {
Punned(AttributeKey),
Expand Down Expand Up @@ -94,14 +94,41 @@ impl Hash for ElementAttribute {

impl Parse for ElementAttribute {
fn parse(input: ParseStream) -> Result<Self> {
let name = AttributeKey::parse_separated_nonempty_with(input, syn::Ident::parse_any)?;
let not_punned = input.peek(syn::Token![=]);
let mut name: syn::punctuated::Punctuated<proc_macro2::Ident, proc_macro2::Punct> =
syn::punctuated::Punctuated::new();

// Parse the input up to the space
loop {
let value = syn::Ident::parse_any(&input).unwrap();
name.push_value(value);

if input.peek(syn::Token![=]) {
break;
}

let punct = input.parse().unwrap();
name.push_punct(punct);
}
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@theashguy theashguy May 27, 2021

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This loop is similar to the implementation in parse_separated_nonempty_with. Key thing I was looking to do here was to give us the ability to modify how and when this accrues / breaks so we can better handle the edge cases. I'm not sure I ended up going very far with this but think it probably makes sense to hold onto this here.


// Peak for incoming equals to check if its punned
let mut not_punned = input.peek(syn::Token![=]);

if !not_punned {
not_punned = input.peek2(syn::Token![=]);
}

if !not_punned {
not_punned = input.peek3(syn::Token![=]);
}
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@theashguy theashguy May 27, 2021

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Because there are multiple sets of punctuation that can occur in a row we look forward to see if any of the next 3 Punctuated's have an equals in it. This may ultimately become a limitation of the library that it can only handle 2 distinct piece of punctuation before the equals though that would be a vast improvement.


if !not_punned {
return Ok(Self::Punned(name));
}

// Parse equals
input.parse::<syn::Token![=]>()?;

// Parse body
let value = input.parse::<syn::Block>()?;

Ok(Self::WithValue(name, value))
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15 changes: 11 additions & 4 deletions render_macros/src/element_attributes.rs
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Expand Up @@ -123,10 +123,17 @@ impl<'a> ToTokens for SimpleElementAttributes<'a> {
.attributes
.iter()
.map(|attribute| {
let mut iter = attribute.ident().iter();
let first_word = iter.next().unwrap().unraw();
let ident = iter.fold(first_word.to_string(), |acc, curr| {
format!("{}-{}", acc, curr.unraw())
let mut iter = attribute.ident().pairs();
let ident = iter.fold("".to_string(), |acc, curr| {
format!(
"{}{}{}",
acc,
curr.value(),
match curr.punct() {
Some(p) => p.as_char().to_string(),
None => "".to_string(),
}
)
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@theashguy theashguy May 27, 2021

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This properly collapses our punctuation and ident fields back into a proper string when there are multiple.

});
let value = attribute.value_tokens();

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