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Auto merge of #24142 - CYBAI:warn-module-script, r=jdm

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Show warning when module scripts are ignored

The first five commits are `cherry-pick`-ed from the module script PR.
I think it might be also good to have this PR first so that reviewers can focus on module script things on that PR!

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #24089
- [x] These changes do not require tests because it just ignored module scripts (or should we turn on module script tests in this PR and update those test expectation to TIMEOUT?)

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bors-servo 2019-09-06 07:36:26 -04:00 • committed by GitHub
commit 7a67261dce
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1 changed files with 166 additions and 109 deletions
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223
components/script/dom/htmlscriptelement.rs
View file

@ -125,35 +125,44 @@ static SCRIPT_JS_MIMES: StaticStringVec = &[
"text/x-javascript",
];
#[derive(Clone, Copy, JSTraceable, MallocSizeOf, PartialEq)]
pub enum ScriptType {
Classic,
Module,
}
#[derive(JSTraceable, MallocSizeOf)]
pub struct ClassicScript {
pub struct ScriptOrigin {
text: DOMString,
url: ServoUrl,
external: bool,
type_: ScriptType,
}
impl ClassicScript {
fn internal(text: DOMString, url: ServoUrl) -> ClassicScript {
ClassicScript {
impl ScriptOrigin {
fn internal(text: DOMString, url: ServoUrl, type_: ScriptType) -> ScriptOrigin {
ScriptOrigin {
text: text,
url: url,
external: false,
type_,
}
}
fn external(text: DOMString, url: ServoUrl) -> ClassicScript {
ClassicScript {
fn external(text: DOMString, url: ServoUrl, type_: ScriptType) -> ScriptOrigin {
ScriptOrigin {
text: text,
url: url,
external: true,
type_,
}
}
}
pub type ScriptResult = Result<ClassicScript, NetworkError>;
pub type ScriptResult = Result<ScriptOrigin, NetworkError>;
/// The context required for asynchronously loading an external script source.
struct ScriptContext {
struct ClassicContext {
/// The element that initiated the request.
elem: Trusted<HTMLScriptElement>,
/// The kind of external script.
@ -173,7 +182,7 @@ struct ScriptContext {
resource_timing: ResourceFetchTiming,
}
impl FetchResponseListener for ScriptContext {
impl FetchResponseListener for ClassicContext {
fn process_request_body(&mut self) {} // TODO(KiChjang): Perhaps add custom steps to perform fetch here?
fn process_request_eof(&mut self) {} // TODO(KiChjang): Perhaps add custom steps to perform fetch here?
@ -226,7 +235,11 @@ impl FetchResponseListener for ScriptContext {
// Step 7.
let (source_text, _, _) = encoding.decode(&self.data);
ClassicScript::external(DOMString::from(source_text), metadata.final_url)
ScriptOrigin::external(
DOMString::from(source_text),
metadata.final_url,
ScriptType::Classic,
)
});
// Step 9.
@ -260,7 +273,7 @@ impl FetchResponseListener for ScriptContext {
}
}
impl ResourceTimingListener for ScriptContext {
impl ResourceTimingListener for ClassicContext {
fn resource_timing_information(&self) -> (InitiatorType, ServoUrl) {
let initiator_type = InitiatorType::LocalName(
self.elem
@ -277,7 +290,7 @@ impl ResourceTimingListener for ScriptContext {
}
}
impl PreInvoke for ScriptContext {}
impl PreInvoke for ClassicContext {}
/// <https://html.spec.whatwg.org/multipage/#fetch-a-classic-script>
fn fetch_a_classic_script(
@ -313,7 +326,7 @@ fn fetch_a_classic_script(
// TODO: Step 3, Add custom steps to perform fetch
let context = Arc::new(Mutex::new(ScriptContext {
let context = Arc::new(Mutex::new(ClassicContext {
elem: Trusted::new(script),
kind: kind,
character_encoding: character_encoding,
@ -364,47 +377,49 @@ impl HTMLScriptElement {
self.non_blocking.set(true);
}
// Step 4.
// Step 4-5.
let text = self.Text();
if text.is_empty() && !element.has_attribute(&local_name!("src")) {
return;
}
// Step 5.
// Step 6.
if !self.upcast::<Node>().is_connected() {
return;
}
// Step 6.
if !self.is_javascript() {
return;
}
let script_type = if let Some(ty) = self.get_script_type() {
ty
} else {
// Step 7.
return;
};
// Step 8.
if was_parser_inserted {
self.parser_inserted.set(true);
self.non_blocking.set(false);
}
// Step 8.
// Step 9.
self.already_started.set(true);
// Step 9.
// Step 10.
let doc = document_from_node(self);
if self.parser_inserted.get() && &*self.parser_document != &*doc {
return;
}
// Step 10.
// Step 11.
if !doc.is_scripting_enabled() {
return;
}
// TODO: Step 11: nomodule content attribute
// TODO: Step 12: nomodule content attribute
// TODO(#4577): Step 12: CSP.
// TODO(#4577): Step 13: CSP.
// Step 13.
// Step 14.
let for_attribute = element.get_attribute(&ns!(), &local_name!("for"));
let event_attribute = element.get_attribute(&ns!(), &local_name!("event"));
match (for_attribute, event_attribute) {
@ -424,20 +439,20 @@ impl HTMLScriptElement {
(_, _) => (),
}
// Step 14.
// Step 15.
let encoding = element
.get_attribute(&ns!(), &local_name!("charset"))
.and_then(|charset| Encoding::for_label(charset.value().as_bytes()))
.unwrap_or_else(|| doc.encoding());
// Step 15.
// Step 16.
let cors_setting = cors_setting_for_element(element);
// TODO: Step 16: Module script credentials mode.
// TODO: Step 17: Module script credentials mode.
// TODO: Step 17: Nonce.
// TODO: Step 18: Nonce.
// Step 18: Integrity metadata.
// Step 19: Integrity metadata.
let im_attribute = element.get_attribute(&ns!(), &local_name!("integrity"));
let integrity_val = im_attribute.as_ref().map(|a| a.value());
let integrity_metadata = match integrity_val {
@ -445,26 +460,30 @@ impl HTMLScriptElement {
None => "",
};
// TODO: Step 19: parser state.
// TODO: Step 20: referrer policy
// TODO: Step 20: environment settings object.
// TODO: Step 21: parser state.
// TODO: Step 22: Fetch options
// TODO: Step 23: environment settings object.
let base_url = doc.base_url();
if let Some(src) = element.get_attribute(&ns!(), &local_name!("src")) {
// Step 21.
// Step 24.
// Step 21.1.
// Step 24.1.
let src = src.value();
// Step 21.2.
// Step 24.2.
if src.is_empty() {
self.queue_error_event();
return;
}
// Step 21.3: The "from an external file"" flag is stored in ClassicScript.
// Step 24.3: The "from an external file"" flag is stored in ScriptOrigin.
// Step 21.4-21.5.
// Step 24.4-24.5.
let url = match base_url.join(&src) {
Ok(url) => url,
Err(_) => {
@ -474,25 +493,27 @@ impl HTMLScriptElement {
},
};
// Preparation for step 23.
match script_type {
ScriptType::Classic => {
// Preparation for step 26.
let kind = if element.has_attribute(&local_name!("defer")) &&
was_parser_inserted &&
!r#async
{
// Step 23.a: classic, has src, has defer, was parser-inserted, is not async.
// Step 26.a: classic, has src, has defer, was parser-inserted, is not async.
ExternalScriptKind::Deferred
} else if was_parser_inserted && !r#async {
// Step 23.c: classic, has src, was parser-inserted, is not async.
// Step 26.c: classic, has src, was parser-inserted, is not async.
ExternalScriptKind::ParsingBlocking
} else if !r#async && !self.non_blocking.get() {
// Step 23.d: classic, has src, is not async, is not non-blocking.
// Step 26.d: classic, has src, is not async, is not non-blocking.
ExternalScriptKind::AsapInOrder
} else {
// Step 23.f: classic, has src.
// Step 26.f: classic, has src.
ExternalScriptKind::Asap
};
// Step 21.6.
// Step 24.6.
fetch_a_classic_script(
self,
kind,
@ -511,27 +532,50 @@ impl HTMLScriptElement {
ExternalScriptKind::AsapInOrder => doc.push_asap_in_order_script(self),
ExternalScriptKind::Asap => doc.add_asap_script(self),
}
},
ScriptType::Module => {
warn!(
"{} is a module script. It should be fixed after #23545 landed.",
url.clone()
);
},
}
} else {
// Step 22.
// Step 25.
assert!(!text.is_empty());
let result = Ok(ClassicScript::internal(text, base_url));
// Step 23.
// Step 25-1.
let result = Ok(ScriptOrigin::internal(
text.clone(),
base_url.clone(),
script_type.clone(),
));
// TODO: Step 25-2.
if let ScriptType::Module = script_type {
warn!(
"{} is a module script. It should be fixed after #23545 landed.",
base_url.clone()
);
return;
}
// Step 26.
if was_parser_inserted &&
doc.get_current_parser()
.map_or(false, |parser| parser.script_nesting_level() <= 1) &&
doc.get_script_blocking_stylesheets_count() > 0
{
// Step 23.h: classic, has no src, was parser-inserted, is blocked on stylesheet.
// Step 26.h: classic, has no src, was parser-inserted, is blocked on stylesheet.
doc.set_pending_parsing_blocking_script(self, Some(result));
} else {
// Step 23.i: otherwise.
// Step 26.i: otherwise.
self.execute(result);
}
}
}
fn unminify_js(&self, script: &mut ClassicScript) {
fn unminify_js(&self, script: &mut ScriptOrigin) {
if !self.parser_document.window().unminify_js() {
return;
}
@ -584,7 +628,7 @@ impl HTMLScriptElement {
}
/// <https://html.spec.whatwg.org/multipage/#execute-the-script-block>
pub fn execute(&self, result: Result<ClassicScript, NetworkError>) {
pub fn execute(&self, result: Result<ScriptOrigin, NetworkError>) {
// Step 1.
let doc = document_from_node(self);
if self.parser_inserted.get() && &*doc != &*self.parser_document {
@ -639,7 +683,7 @@ impl HTMLScriptElement {
}
// https://html.spec.whatwg.org/multipage/#run-a-classic-script
pub fn run_a_classic_script(&self, script: &ClassicScript) {
pub fn run_a_classic_script(&self, script: &ScriptOrigin) {
// TODO use a settings object rather than this element's document/window
// Step 2
let document = document_from_node(self);
@ -688,45 +732,58 @@ impl HTMLScriptElement {
);
}
pub fn is_javascript(&self) -> bool {
// https://html.spec.whatwg.org/multipage/#prepare-a-script Step 7.
pub fn get_script_type(&self) -> Option<ScriptType> {
let element = self.upcast::<Element>();
let type_attr = element.get_attribute(&ns!(), &local_name!("type"));
let is_js = match type_attr.as_ref().map(|s| s.value()) {
Some(ref s) if s.is_empty() => {
// type attr exists, but empty means js
debug!("script type empty, inferring js");
true
},
Some(s) => {
debug!("script type={}", &**s);
SCRIPT_JS_MIMES
.contains(&s.to_ascii_lowercase().trim_matches(HTML_SPACE_CHARACTERS))
},
None => {
debug!("no script type");
let language_attr = element.get_attribute(&ns!(), &local_name!("language"));
let is_js = match language_attr.as_ref().map(|s| s.value()) {
Some(ref s) if s.is_empty() => {
debug!("script language empty, inferring js");
true
let script_type = match (
type_attr.as_ref().map(|t| t.value()),
language_attr.as_ref().map(|l| l.value()),
) {
(Some(ref ty), _) if ty.is_empty() => {
debug!("script type empty, inferring js");
Some(ScriptType::Classic)
},
Some(s) => {
debug!("script language={}", &**s);
let mut language = format!("text/{}", &**s);
language.make_ascii_lowercase();
SCRIPT_JS_MIMES.contains(&&*language)
(None, Some(ref lang)) if lang.is_empty() => {
debug!("script type empty, inferring js");
Some(ScriptType::Classic)
},
None => {
debug!("no script type or language, inferring js");
true
(None, None) => {
debug!("script type empty, inferring js");
Some(ScriptType::Classic)
},
(None, Some(ref lang)) => {
debug!("script language={}", &***lang);
let language = format!("text/{}", &***lang);
if SCRIPT_JS_MIMES.contains(&language.to_ascii_lowercase().as_str()) {
Some(ScriptType::Classic)
} else {
None
}
},
(Some(ref ty), _) => {
debug!("script type={}", &***ty);
if &***ty == String::from("module") {
return Some(ScriptType::Module);
}
if SCRIPT_JS_MIMES
.contains(&ty.to_ascii_lowercase().trim_matches(HTML_SPACE_CHARACTERS))
{
Some(ScriptType::Classic)
} else {
None
}
},
};
// https://github.com/rust-lang/rust/issues/21114
is_js
},
};
// https://github.com/rust-lang/rust/issues/21114
is_js
script_type
}
pub fn set_parser_inserted(&self, parser_inserted: bool) {