Run rustfmt and keep it running on CI (#2023)

Thought we did this awhile back, but looks like we forgot to do so!

azure-pipelines.yml

@@ -5,6 +5,12 @@ trigger:
       - refs/tags/*
 
 jobs:
+  - job: test_formatting
+    displayName: "Run cargo fmt"
+    steps:
+      - template: ci/azure-install-rust.yml
+      - script: cargo fmt --all -- --check
+
   - job: test_wasm_bindgen
     displayName: "Run wasm-bindgen crate tests (unix)"
     steps:

crates/backend/src/codegen.rs

@@ -42,7 +42,8 @@ impl TryToTokens for ast::Program {
             DescribeImport {
                 kind: &i.kind,
                 unstable_api: i.unstable_api,
-            }.to_tokens(tokens);
+            }
+            .to_tokens(tokens);
 
             // If there is a js namespace, check that name isn't a type. If it is,
             // this import might be a method on that type.

crates/backend/src/util.rs

@@ -157,7 +157,6 @@ impl<T: Hash> fmt::Display for ShortHash<T> {
     }
 }
 
-
 /// Create syn attribute for `#[cfg(web_sys_unstable_apis)]` and a doc comment.
 pub fn unstable_api_attrs() -> proc_macro2::TokenStream {
     quote::quote!(

crates/cli-support/src/descriptors.rs

@@ -136,10 +136,11 @@ impl WasmBindgenDescriptorsSection {
                     let (id, import_id) =
                         module.add_import_func("__wbindgen_placeholder__", &import_name, ty);
                     module.funcs.get_mut(id).name = Some(import_name);
-                    self.closure_imports.insert(import_id, descriptor.clone().unwrap_closure());
+                    self.closure_imports
+                        .insert(import_id, descriptor.clone().unwrap_closure());
                     self.cached_closures.insert(descriptor, id);
                     id
-                },
+                }
             };
 
             let local = match &mut module.funcs.get_mut(func).kind {

crates/cli-support/src/js/mod.rs

@@ -216,10 +216,7 @@ impl<'a> Context<'a> {
                 js.push_str("const __exports = {};\n");
                 js.push_str("let wasm;\n");
                 init = self.gen_init(needs_manual_start, None)?;
-                footer.push_str(&format!(
-                    "{} = Object.assign(init, __exports);\n",
-                    global
-                ));
+                footer.push_str(&format!("{} = Object.assign(init, __exports);\n", global));
             }
 
             // With normal CommonJS node we need to defer requiring the wasm
@@ -319,7 +316,7 @@ impl<'a> Context<'a> {
         let mut imports = String::new();
 
         if self.config.omit_imports {
-            return Ok(imports)
+            return Ok(imports);
         }
 
         match &self.config.mode {
@@ -759,7 +756,10 @@ impl<'a> Context<'a> {
             return;
         }
         assert!(!self.config.anyref);
-        self.global(&format!("const heap = new Array({}).fill(undefined);", INITIAL_HEAP_OFFSET));
+        self.global(&format!(
+            "const heap = new Array({}).fill(undefined);",
+            INITIAL_HEAP_OFFSET
+        ));
         self.global(&format!("heap.push({});", INITIAL_HEAP_VALUES.join(", ")));
     }
 
@@ -2440,7 +2440,6 @@ impl<'a> Context<'a> {
                         dtor = dtor,
                         call = call,
                     ))
-
                 } else {
                     self.expose_make_closure()?;
 

crates/macro-support/src/parser.rs

@@ -187,7 +187,10 @@ impl Default for BindgenAttrs {
         // sanity check that we call `check_used` an appropriate number of
         // times.
         ATTRS.with(|state| state.parsed.set(state.parsed.get() + 1));
-        BindgenAttrs { attrs: Vec::new(), unstable_api_attr: None, }
+        BindgenAttrs {
+            attrs: Vec::new(),
+            unstable_api_attr: None,
+        }
     }
 }
 

crates/typescript-tests/src/simple_struct.rs

@@ -14,7 +14,9 @@ impl A {
 
     pub fn foo(&self) {}
 
-    pub fn ret_bool(&self) -> bool { true }
+    pub fn ret_bool(&self) -> bool {
+        true
+    }
     pub fn take_bool(&self, _: bool) {}
     pub fn take_many(&self, _: bool, _: f64, _: u32) {}
 }

crates/web-sys/build.rs

@@ -72,26 +72,27 @@ fn main() -> Result<()> {
     let source = read_source_from_path("webidls/enabled")?;
     let unstable_source = read_source_from_path("webidls/unstable")?;
 
-    let bindings = match wasm_bindgen_webidl::compile(&source.contents, &unstable_source.contents, allowed) {
-        Ok(bindings) => bindings,
-        Err(e) => {
-            if let Some(err) = e.downcast_ref::<wasm_bindgen_webidl::WebIDLParseError>() {
-                if let Some(pos) = source.resolve_offset(err.0) {
-                    let ctx = format!(
-                        "compiling WebIDL into wasm-bindgen bindings in file \
+    let bindings =
+        match wasm_bindgen_webidl::compile(&source.contents, &unstable_source.contents, allowed) {
+            Ok(bindings) => bindings,
+            Err(e) => {
+                if let Some(err) = e.downcast_ref::<wasm_bindgen_webidl::WebIDLParseError>() {
+                    if let Some(pos) = source.resolve_offset(err.0) {
+                        let ctx = format!(
+                            "compiling WebIDL into wasm-bindgen bindings in file \
                          \"{}\", line {} column {}",
-                        pos.filename,
-                        pos.line + 1,
-                        pos.col + 1
-                    );
-                    return Err(e.context(ctx));
-                } else {
-                    return Err(e.context("compiling WebIDL into wasm-bindgen bindings"));
+                            pos.filename,
+                            pos.line + 1,
+                            pos.col + 1
+                        );
+                        return Err(e.context(ctx));
+                    } else {
+                        return Err(e.context("compiling WebIDL into wasm-bindgen bindings"));
+                    }
                 }
+                return Err(e.context("compiling WebIDL into wasm-bindgen bindings"));
             }
-            return Err(e.context("compiling WebIDL into wasm-bindgen bindings"));
-        }
-    };
+        };
 
     let out_dir = env::var("OUT_DIR").context("reading OUT_DIR environment variable")?;
     let out_file_path = path::Path::new(&out_dir).join("bindings.rs");

crates/web-sys/tests/wasm/main.rs

@@ -5,10 +5,10 @@ use wasm_bindgen_test::*;
 wasm_bindgen_test_configure!(run_in_browser);
 
 pub mod anchor_element;
+pub mod blob;
 pub mod body_element;
 pub mod br_element;
 pub mod button_element;
-pub mod blob;
 pub mod console;
 pub mod div_element;
 pub mod element;

crates/web-sys/tests/wasm/whitelisted_immutable_slices.rs

@@ -10,8 +10,8 @@
 //!
 //! @see https://github.com/rustwasm/wasm-bindgen/issues/1005
 
+use wasm_bindgen::{JsCast, JsValue};
 use web_sys::{WebGl2RenderingContext, WebGlRenderingContext, WebSocket};
-use wasm_bindgen::{JsValue, JsCast};
 
 // Ensure that our whitelisted WebGlRenderingContext methods compile with immutable slices.
 fn test_webgl_rendering_context_immutable_slices() {
@@ -60,9 +60,9 @@ fn test_webgl_rendering_context_immutable_slices() {
 fn test_webgl2_rendering_context_immutable_slices() {
     let gl = JsValue::null().unchecked_into::<WebGl2RenderingContext>();
 
-   gl.tex_image_3d_with_opt_u8_array(0, 0, 0, 0, 0, 0, 0, 0, 0, Some(&[1]));
-   gl.tex_sub_image_3d_with_opt_u8_array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Some(&[1]));
-   gl.compressed_tex_image_3d_with_u8_array(0, 0, 0, 0, 0, 0, 0, &[1]);
+    gl.tex_image_3d_with_opt_u8_array(0, 0, 0, 0, 0, 0, 0, 0, 0, Some(&[1]));
+    gl.tex_sub_image_3d_with_opt_u8_array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Some(&[1]));
+    gl.compressed_tex_image_3d_with_u8_array(0, 0, 0, 0, 0, 0, 0, &[1]);
 }
 
 // Ensure that our whitelisted WebSocket methods compile with immutable slices.

crates/webidl-tests/build.rs

@@ -26,7 +26,8 @@ fn main() {
         } else {
             (idl, String::new())
         };
-        let mut generated_rust = wasm_bindgen_webidl::compile(&stable_source, &experimental_source, None).unwrap();
+        let mut generated_rust =
+            wasm_bindgen_webidl::compile(&stable_source, &experimental_source, None).unwrap();
 
         generated_rust.insert_str(
             0,

crates/webidl/src/first_pass.rs

@@ -20,7 +20,10 @@ use weedle::CallbackInterfaceDefinition;
 use weedle::{DictionaryDefinition, PartialDictionaryDefinition};
 
 use super::Result;
-use crate::{util::{self, camel_case_ident}, ApiStability};
+use crate::{
+    util::{self, camel_case_ident},
+    ApiStability,
+};
 
 /// Collection of constructs that may use partial.
 #[derive(Default)]
@@ -139,7 +142,11 @@ pub(crate) trait FirstPass<'src, Ctx> {
 }
 
 impl<'src> FirstPass<'src, ApiStability> for [weedle::Definition<'src>] {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         for def in self {
             def.first_pass(record, stability)?;
         }
@@ -149,7 +156,11 @@ impl<'src> FirstPass<'src, ApiStability> for [weedle::Definition<'src>] {
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::Definition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         use weedle::Definition::*;
 
         match self {
@@ -172,15 +183,16 @@ impl<'src> FirstPass<'src, ApiStability> for weedle::Definition<'src> {
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::DictionaryDefinition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         if util::is_chrome_only(&self.attributes) {
             return Ok(());
         }
 
-        let dictionary_data = record
-            .dictionaries
-            .entry(self.identifier.0)
-            .or_default();
+        let dictionary_data = record.dictionaries.entry(self.identifier.0).or_default();
 
         dictionary_data.definition = Some(self);
         dictionary_data.stability = stability;
@@ -207,7 +219,11 @@ impl<'src> FirstPass<'src, ()> for weedle::PartialDictionaryDefinition<'src> {
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::EnumDefinition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         if util::is_chrome_only(&self.attributes) {
             return Ok(());
         }
@@ -325,7 +341,11 @@ fn first_pass_operation<'src>(
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::InterfaceDefinition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         if util::is_chrome_only(&self.attributes) {
             return Ok(());
         }
@@ -410,7 +430,11 @@ fn process_interface_attribute<'src>(
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::PartialInterfaceDefinition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         if util::is_chrome_only(&self.attributes) {
             return Ok(());
         }
@@ -425,7 +449,7 @@ impl<'src> FirstPass<'src, ApiStability> for weedle::PartialInterfaceDefinition<
         for member in &self.members.body {
             member.first_pass(record, (self.identifier.0, stability))?;
         }
-        
+
         Ok(())
     }
 }
@@ -513,7 +537,9 @@ impl<'src> FirstPass<'src, &'src str> for weedle::interface::OperationInterfaceM
     }
 }
 
-impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::interface::AttributeInterfaceMember<'src> {
+impl<'src> FirstPass<'src, (&'src str, ApiStability)>
+    for weedle::interface::AttributeInterfaceMember<'src>
+{
     fn first_pass(
         &'src self,
         record: &mut FirstPassRecord<'src>,
@@ -530,14 +556,18 @@ impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::interface::Att
             .attributes
             .push(AttributeInterfaceData {
                 definition: self,
-                stability: ctx.1
+                stability: ctx.1,
             });
         Ok(())
     }
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::InterfaceMixinDefinition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         if util::is_chrome_only(&self.attributes) {
             return Ok(());
         }
@@ -558,7 +588,11 @@ impl<'src> FirstPass<'src, ApiStability> for weedle::InterfaceMixinDefinition<'s
 }
 
 impl<'src> FirstPass<'src, ApiStability> for weedle::PartialInterfaceMixinDefinition<'src> {
-    fn first_pass(&'src self, record: &mut FirstPassRecord<'src>, stability: ApiStability) -> Result<()> {
+    fn first_pass(
+        &'src self,
+        record: &mut FirstPassRecord<'src>,
+        stability: ApiStability,
+    ) -> Result<()> {
         if util::is_chrome_only(&self.attributes) {
             return Ok(());
         }
@@ -604,7 +638,9 @@ impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::mixin::MixinMe
     }
 }
 
-impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::mixin::OperationMixinMember<'src> {
+impl<'src> FirstPass<'src, (&'src str, ApiStability)>
+    for weedle::mixin::OperationMixinMember<'src>
+{
     fn first_pass(
         &'src self,
         record: &mut FirstPassRecord<'src>,
@@ -629,7 +665,9 @@ impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::mixin::Operati
     }
 }
 
-impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::mixin::AttributeMixinMember<'src> {
+impl<'src> FirstPass<'src, (&'src str, ApiStability)>
+    for weedle::mixin::AttributeMixinMember<'src>
+{
     fn first_pass(
         &'src self,
         record: &mut FirstPassRecord<'src>,
@@ -645,7 +683,7 @@ impl<'src> FirstPass<'src, (&'src str, ApiStability)> for weedle::mixin::Attribu
             .attributes
             .push(AttributeMixinData {
                 definition: self,
-                stability: ctx.1
+                stability: ctx.1,
             });
         Ok(())
     }

crates/webidl/src/lib.rs

@@ -97,7 +97,11 @@ fn parse_source(source: &str) -> Result<Vec<weedle::Definition>> {
 }
 
 /// Parse a string of WebIDL source text into a wasm-bindgen AST.
-fn parse(webidl_source: &str, unstable_source: &str, allowed_types: Option<&[&str]>) -> Result<Program> {
+fn parse(
+    webidl_source: &str,
+    unstable_source: &str,
+    allowed_types: Option<&[&str]>,
+) -> Result<Program> {
     let mut first_pass_record: FirstPassRecord = Default::default();
     first_pass_record.builtin_idents = builtin_idents();
     first_pass_record.immutable_slice_whitelist = immutable_slice_whitelist();
@@ -164,7 +168,11 @@ fn parse(webidl_source: &str, unstable_source: &str, allowed_types: Option<&[&st
 
 /// Compile the given WebIDL source text into Rust source text containing
 /// `wasm-bindgen` bindings to the things described in the WebIDL.
-pub fn compile(webidl_source: &str, experimental_source: &str, allowed_types: Option<&[&str]>) -> Result<String> {
+pub fn compile(
+    webidl_source: &str,
+    experimental_source: &str,
+    allowed_types: Option<&[&str]>,
+) -> Result<String> {
     let ast = parse(webidl_source, experimental_source, allowed_types)?;
     Ok(compile_ast(ast))
 }
@@ -785,7 +793,9 @@ impl<'src> FirstPassRecord<'src> {
             OperationId::IndexingDeleter => Some(format!("The indexing deleter\n\n")),
         };
         let attrs = data.definition_attributes;
-        for mut method in self.create_imports(attrs, kind, id, op_data, data.stability.is_unstable()) {
+        for mut method in
+            self.create_imports(attrs, kind, id, op_data, data.stability.is_unstable())
+        {
             let mut doc = doc.clone();
             self.append_required_features_doc(&method, &mut doc, &[]);
             method.doc_comment = doc;

examples/fetch/src/lib.rs

@@ -40,10 +40,7 @@ pub async fn run(repo: String) -> Result<JsValue, JsValue> {
 
     let url = format!("https://api.github.com/repos/{}/branches/master", repo);
 
-    let request = Request::new_with_str_and_init(
-        &url,
-        &opts,
-    )?;
+    let request = Request::new_with_str_and_init(&url, &opts)?;
 
     request
         .headers()