Add basic CI checks

.github/workflows/ci.yml

@@ -0,0 +1,71 @@
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+name: CI
+
+env:
+  RUSTDOCFLAGS: "-D warnings"
+  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: "sparse"
+
+jobs:
+
+  # MSRV check.
+  # Blitz only guarantees "latest stable". However we have this check here to ensure that we advertise
+  # our MSRV. We also make an effort not to increase MSRV in patch versions of Blitz.
+  #
+  # We only run `cargo build` (not `cargo test`) so as to avoid requiring dev-dependencies to build with the MSRV
+  # version. Building is likely sufficient as runtime errors varying between rust versions is very unlikely.
+  build-msrv:
+    name: "MSRV Build [Rust 1.79]"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: 1.79
+      - run: sudo apt install libgtk-3-dev libxdo-dev
+      - run: cargo build --workspace
+
+  test-features-default:
+    name: "Test [default features]"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: sudo apt install libgtk-3-dev libxdo-dev
+      - run: cargo build --workspace
+      - run: cargo test --workspace
+
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+          components: rustfmt
+      - run: cargo fmt --all --check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: nightly
+          components: clippy
+      - run: sudo apt install libgtk-3-dev libxdo-dev
+      - run: cargo clippy --workspace -- -D warnings
+
+  doc:
+    name: Documentation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo doc

examples/tailwind.rs

@@ -13,7 +13,7 @@ fn main() {
 fn app() -> Element {
     rsx! {
         style { {CSS} }
-        for row in 0..3 {
+        for _row in 0..3 {
                 div { class: "flex flex-row",
                 div { id: "cool", "h123456789asdjkahskj\nhiiiii" }
                 p { class: "cool", "hi" }

packages/blitz/src/render.rs

@@ -141,19 +141,22 @@ where
             .await
             .expect("Error creating surface");
 
-        let default_threads = || -> Option<NonZeroUsize> {
-            #[cfg(target_arch = "macos")]
+        const DEFAULT_THREADS: Option<NonZeroUsize> = {
+            #[cfg(target_os = "macos")]
             {
-                Some(NonZeroUsize::new(1)?)
+                NonZeroUsize::new(1)
+            }
+            #[cfg(not(target_os = "macos"))]
+            {
+                None
             }
-            None
         };
 
         let options = RendererOptions {
             surface_format: Some(surface.config.format),
             antialiasing_support: AaSupport::all(),
             use_cpu: false,
-            num_init_threads: default_threads(),
+            num_init_threads: DEFAULT_THREADS,
         };
 
         let renderer =

packages/blitz/src/viewport.rs

@@ -1,7 +1,5 @@
-use style::{
-    media_queries::{Device, MediaType},
-    servo::media_queries::FontMetricsProvider,
-};
+use blitz_dom::document::DummyFontMetricsProvider;
+use style::media_queries::{Device, MediaType};
 
 #[derive(Default, Debug)]
 pub struct Viewport {
@@ -14,22 +12,6 @@ pub struct Viewport {
     pub font_size: f32,
 }
 
-// TODO: implement a proper font metrics provider
-#[derive(Debug, Clone)]
-struct DummyFontMetricsProvider;
-impl FontMetricsProvider for DummyFontMetricsProvider {
-    fn query_font_metrics(
-        &self,
-        _vertical: bool,
-        _font: &style::properties::style_structs::Font,
-        _base_size: style::values::computed::CSSPixelLength,
-        _in_media_query: bool,
-        _retrieve_math_scales: bool,
-    ) -> style::font_metrics::FontMetrics {
-        Default::default()
-    }
-}
-
 impl Viewport {
     pub fn new(window_size: (u32, u32)) -> Self {
         Self {

packages/dioxus-blitz/src/documents/dioxus_document.rs

@@ -48,30 +48,29 @@ impl AsMut<Document> for DioxusDocument {
         &mut self.inner
     }
 }
-impl Into<Document> for DioxusDocument {
-    fn into(self) -> Document {
-        self.inner
+impl From<DioxusDocument> for Document {
+    fn from(doc: DioxusDocument) -> Document {
+        doc.inner
     }
 }
 impl DocumentLike for DioxusDocument {
     fn poll(&mut self, mut cx: std::task::Context) -> bool {
-        loop {
-            {
-                let fut = self.vdom.wait_for_work();
-                pin_mut!(fut);
-
-                match fut.poll_unpin(&mut cx) {
-                    std::task::Poll::Ready(_) => {}
-                    std::task::Poll::Pending => return false,
-                }
-            }
+        {
+            let fut = self.vdom.wait_for_work();
+            pin_mut!(fut);
 
-            self.vdom.render_immediate(&mut MutationWriter {
-                doc: &mut self.inner,
-                state: &mut self.vdom_state,
-            });
-            return true;
+            match fut.poll_unpin(&mut cx) {
+                std::task::Poll::Ready(_) => {}
+                std::task::Poll::Pending => return false,
+            }
         }
+
+        self.vdom.render_immediate(&mut MutationWriter {
+            doc: &mut self.inner,
+            state: &mut self.vdom_state,
+        });
+
+        true
     }
 
     fn handle_event(&mut self, event: blitz_dom::events::RendererEvent) -> bool {

packages/dioxus-blitz/src/documents/html_document.rs

@@ -19,9 +19,9 @@ impl AsMut<Document> for HtmlDocument {
         &mut self.inner
     }
 }
-impl Into<Document> for HtmlDocument {
-    fn into(self) -> Document {
-        self.inner
+impl From<HtmlDocument> for Document {
+    fn from(doc: HtmlDocument) -> Document {
+        doc.inner
     }
 }
 impl DocumentLike for HtmlDocument {}

packages/dioxus-blitz/src/window.rs

@@ -296,7 +296,9 @@ impl<'a, Doc: DocumentLike> View<'a, Doc> {
             }
             #[cfg(target_os = "linux")]
             {
-                build_menu().init_for_gtk_window(window.gtk_window(), window.default_vbox());
+                build_menu()
+                    .init_for_gtk_window(window.gtk_window(), window.default_vbox())
+                    .unwrap();
             }
 
             // !TODO - this may not be the right way to do this, but it's a start
@@ -331,10 +333,10 @@ impl<'a, Doc: DocumentLike> View<'a, Doc> {
 
 #[cfg(not(target_os = "macos"))]
 fn build_menu() -> Menu {
-    let mut menu = Menu::new();
+    let menu = Menu::new();
 
     // Build the about section
-    let mut about = Submenu::new("About", true);
+    let about = Submenu::new("About", true);
 
     about
         .append_items(&[

packages/dom/src/document.rs

@@ -7,6 +7,7 @@ use slab::Slab;
 use std::collections::HashMap;
 use style::invalidation::element::restyle_hints::RestyleHint;
 use style::selector_parser::ServoElementSnapshot;
+use style::servo::media_queries::FontMetricsProvider;
 use style::servo_arc::Arc as ServoArc;
 use style::{
     dom::{TDocument, TNode},
@@ -20,6 +21,22 @@ use style_traits::dom::ElementState;
 use taffy::AvailableSpace;
 use url::Url;
 
+// TODO: implement a proper font metrics provider
+#[derive(Debug, Clone)]
+pub struct DummyFontMetricsProvider;
+impl FontMetricsProvider for DummyFontMetricsProvider {
+    fn query_font_metrics(
+        &self,
+        _vertical: bool,
+        _font: &style::properties::style_structs::Font,
+        _base_size: style::values::computed::CSSPixelLength,
+        _in_media_query: bool,
+        _retrieve_math_scales: bool,
+    ) -> style::font_metrics::FontMetrics {
+        Default::default()
+    }
+}
+
 pub trait DocumentLike: AsRef<Document> + AsMut<Document> + Into<Document> {
     fn poll(&mut self, _cx: std::task::Context) -> bool {
         // Default implementation does nothing

packages/dom/src/htmlsink.rs

@@ -270,8 +270,7 @@ impl<'b> TreeSink for DocumentHtmlParser<'b> {
                 if has_appended {
                     return;
                 } else {
-                    let id = self.create_text_node(&text);
-                    id
+                    self.create_text_node(&text)
                 }
             }
             NodeOrText::AppendNode(id) => id,
@@ -366,6 +365,7 @@ impl<'b> TreeSink for DocumentHtmlParser<'b> {
 
 #[test]
 fn parses_some_html() {
+    use crate::document::DummyFontMetricsProvider;
     use euclid::{Scale, Size2D};
     use style::media_queries::{Device, MediaType};
 
@@ -378,6 +378,7 @@ fn parses_some_html() {
         selectors::matching::QuirksMode::NoQuirks,
         viewport_size,
         device_pixel_ratio,
+        Box::new(DummyFontMetricsProvider),
     );
     let mut doc = Document::new(device);
     let sink = DocumentHtmlParser::new(&mut doc);

packages/dom/src/layout/mod.rs

@@ -411,13 +411,13 @@ impl PrintTree for Document {
     }
 }
 
-pub struct ChildIter<'a>(std::slice::Iter<'a, usize>);
-impl<'a> Iterator for ChildIter<'a> {
-    type Item = NodeId;
-    fn next(&mut self) -> Option<Self::Item> {
-        self.0.next().copied().map(NodeId::from)
-    }
-}
+// pub struct ChildIter<'a>(std::slice::Iter<'a, usize>);
+// impl<'a> Iterator for ChildIter<'a> {
+//     type Item = NodeId;
+//     fn next(&mut self) -> Option<Self::Item> {
+//         self.0.next().copied().map(NodeId::from)
+//     }
+// }
 
 pub struct RefCellChildIter<'a> {
     items: Ref<'a, [usize]>,

packages/dom/src/stylo.rs

@@ -815,8 +815,7 @@ impl<'a> TElement for BlitzNode<'a> {
         let root_element = TDocument::as_node(&root_node)
             .first_element_child()
             .unwrap();
-        let is_child_of_root_element = root_element.children.contains(&self.id);
-        is_child_of_root_element
+        root_element.children.contains(&self.id)
     }
 
     fn synthesize_presentational_hints_for_legacy_attributes<V>(

packages/dom/src/stylo_to_parley.rs

@@ -72,7 +72,7 @@ pub(crate) fn style(style: &stylo::ComputedValues) -> parley::TextStyle<'static,
                     }
 
                     // TODO: fix leak!
-                    parley::FontFamily::Named(name.to_string().leak())
+                    break 'ret parley::FontFamily::Named(name.to_string().leak());
                 }
             }
             stylo::SingleFontFamily::Generic(generic) => {

packages/dom/src/util.rs

@@ -6,14 +6,17 @@ use image::DynamicImage;
 const USER_AGENT: &str = "Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/81.0";
 const FILE_SIZE_LIMIT: u64 = 1_000_000_000; // 1GB
 
-pub(crate) fn fetch_blob(url: &str) -> Result<Vec<u8>, ureq::Error> {
+pub(crate) fn fetch_blob(url: &str) -> Result<Vec<u8>, Box<ureq::Error>> {
     if url.starts_with("data:") {
         let data_url = data_url::DataUrl::process(url).unwrap();
         let decoded = data_url.decode_to_vec().expect("Invalid data url");
         return Ok(decoded.0);
     }
 
-    let resp = ureq::get(url).set("User-Agent", USER_AGENT).call()?;
+    let resp = ureq::get(url)
+        .set("User-Agent", USER_AGENT)
+        .call()
+        .map_err(Box::new)?;
 
     let len: usize = resp
         .header("Content-Length")
@@ -23,12 +26,13 @@ pub(crate) fn fetch_blob(url: &str) -> Result<Vec<u8>, ureq::Error> {
 
     resp.into_reader()
         .take(FILE_SIZE_LIMIT)
-        .read_to_end(&mut bytes)?;
+        .read_to_end(&mut bytes)
+        .unwrap();
 
     Ok(bytes)
 }
 
-pub(crate) fn fetch_string(url: &str) -> Result<String, ureq::Error> {
+pub(crate) fn fetch_string(url: &str) -> Result<String, Box<ureq::Error>> {
     fetch_blob(url).map(|vec| String::from_utf8(vec).expect("Invalid UTF8"))
 }
 
@@ -41,11 +45,11 @@ pub(crate) fn fetch_string(url: &str) -> Result<String, ureq::Error> {
 
 #[allow(unused)]
 pub(crate) enum ImageFetchErr {
-    FetchErr(ureq::Error),
+    FetchErr(Box<ureq::Error>),
     ImageError(image::error::ImageError),
 }
-impl From<ureq::Error> for ImageFetchErr {
-    fn from(value: ureq::Error) -> Self {
+impl From<Box<ureq::Error>> for ImageFetchErr {
+    fn from(value: Box<ureq::Error>) -> Self {
         Self::FetchErr(value)
     }
 }